public void Compile_RunsCallback()
{
var content = "public class MyTestType {}";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
RoslynCompilationContext usedCompilation = null;
var mvcRazorHost = new Mock <IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns(string.Empty);
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost.Object,
GetOptions(callback: c => usedCompilation = c),
GetFileProviderAccessor(),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(
new TestFileInfo {
PhysicalPath = "SomePath"
},
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
Assert.NotNull(usedCompilation);
Assert.NotNull(usedCompilation.Compilation);
Assert.Equal(1, usedCompilation.Compilation.SyntaxTrees.Length);
}
/// <summary>
/// Initializes a new instance of <see cref="CompilerCacheEntry"/> for a file that was dynamically compiled.
/// </summary>
/// <param name="info">Metadata about the file that was compiled.</param>
/// <param name="compiledType">The compiled <see cref="Type"/>.</param>
public CompilerCacheEntry([NotNull] RelativeFileInfo info, [NotNull] Type compiledType)
{
CompiledType = compiledType;
RelativePath = info.RelativePath;
Length = info.FileInfo.Length;
LastModified = info.FileInfo.LastModified;
}
public void Compile_ReturnsUncachedCompilationResultWithCompiledContent()
{
// Arrange
var content = @"
public class MyTestType {}";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryExporter = GetLibraryExporter();
var compilerOptionsProvider = new Mock<ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = new Mock<IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns(string.Empty);
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryExporter,
compilerOptionsProvider.Object,
mvcRazorHost.Object,
GetOptions());
var relativeFileInfo = new RelativeFileInfo(new TestFileInfo { PhysicalPath = "SomePath" },
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
var uncachedResult = Assert.IsType<UncachedCompilationResult>(result);
Assert.Equal("MyTestType", result.CompiledType.Name);
Assert.Equal(content, uncachedResult.CompiledContent);
}
public void Compile_ReturnsSingleTypeThatStartsWithMainClassNamePrefix()
{
// Arrange
var content = @"
public class RazorPrefixType {}
public class NotRazorPrefixType {}";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = new Mock <IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns("RazorPrefix");
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost.Object,
GetOptions(),
GetFileProviderAccessor(),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(
new TestFileInfo {
PhysicalPath = "SomePath"
},
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.NotNull(result.CompiledType);
Assert.Equal("RazorPrefixType", result.CompiledType.Name);
}
/// <inheritdoc />
public CompilationResult Compile(RelativeFileInfo file)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
GeneratorResults results;
using (var inputStream = file.FileInfo.CreateReadStream())
{
_logger.RazorFileToCodeCompilationStart(file.RelativePath);
var startTimestamp = _logger.IsEnabled(LogLevel.Debug) ? Stopwatch.GetTimestamp() : 0;
results = GenerateCode(file.RelativePath, inputStream);
_logger.RazorFileToCodeCompilationEnd(file.RelativePath, startTimestamp);
}
if (!results.Success)
{
return(GetCompilationFailedResult(file, results.ParserErrors));
}
return(_compilationService.Compile(file, results.GeneratedCode));
}
public void Compile_ReturnsGeneratedCodePath_IfLinePragmaIsNotAvailable()
{
// Arrange
var fileContent = "file content";
var content = @"this should fail";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = Mock.Of <IMvcRazorHost>();
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost,
GetOptions(),
GetFileProviderAccessor(),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(
new TestFileInfo {
Content = fileContent
},
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType <CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal("Generated Code", compilationFailure.SourceFilePath);
Assert.Equal(content, compilationFailure.SourceFileContent);
}
public void CompileCalculatesRootRelativePath(string appPath, string viewPath)
{
// Arrange
var host = new Mock <IMvcRazorHost>();
host.Setup(h => h.GenerateCode(@"Views\index\home.cshtml", It.IsAny <Stream>()))
.Returns(GetGeneratorResult())
.Verifiable();
var fileInfo = new Mock <IFileInfo>();
fileInfo.Setup(f => f.PhysicalPath).Returns(viewPath);
fileInfo.Setup(f => f.CreateReadStream()).Returns(Stream.Null);
var relativeFileInfo = new RelativeFileInfo(fileInfo.Object, @"Views\index\home.cshtml");
var compiler = new Mock <ICompilationService>();
compiler.Setup(c => c.Compile(relativeFileInfo, It.IsAny <string>()))
.Returns(CompilationResult.Successful(typeof(RazorCompilationServiceTest)));
var razorService = new RazorCompilationService(compiler.Object, host.Object, GetOptions());
// Act
razorService.Compile(relativeFileInfo);
// Assert
host.Verify();
}
public void Compile_ReturnsCompilationResult()
{
// Arrange
var content = @"
public class MyTestType {}";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = new Mock<IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns(string.Empty);
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost.Object,
GetOptions(),
GetFileProviderAccessor(),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(
new TestFileInfo { PhysicalPath = "SomePath" },
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.Equal("MyTestType", result.CompiledType.Name);
}
public void CompileCalculatesRootRelativePath(string appPath, string viewPath)
{
// Arrange
var host = new Mock<IMvcRazorHost>();
host.Setup(h => h.GenerateCode(@"Views\index\home.cshtml", It.IsAny<Stream>()))
.Returns(GetGeneratorResult())
.Verifiable();
var fileInfo = new Mock<IFileInfo>();
fileInfo.Setup(f => f.PhysicalPath).Returns(viewPath);
fileInfo.Setup(f => f.CreateReadStream()).Returns(Stream.Null);
var relativeFileInfo = new RelativeFileInfo(fileInfo.Object, @"Views\index\home.cshtml");
var compiler = new Mock<ICompilationService>();
compiler.Setup(c => c.Compile(relativeFileInfo, It.IsAny<string>()))
.Returns(CompilationResult.Successful(typeof(RazorCompilationServiceTest)));
var razorService = new RazorCompilationService(compiler.Object, host.Object, GetOptions());
// Act
razorService.Compile(relativeFileInfo);
// Assert
host.Verify();
}
/// <inheritdoc />
public CompilationResult Compile(RelativeFileInfo file)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
GeneratorResults results;
using (var inputStream = file.FileInfo.CreateReadStream())
{
_logger.RazorFileToCodeCompilationStart(file.RelativePath);
var startTimestamp = _logger.IsEnabled(LogLevel.Debug) ? Stopwatch.GetTimestamp() : 0;
results = GenerateCode(file.RelativePath, inputStream);
_logger.RazorFileToCodeCompilationEnd(file.RelativePath, startTimestamp);
}
if (!results.Success)
{
return GetCompilationFailedResult(file, results.ParserErrors);
}
return _compilationService.Compile(file, results.GeneratedCode);
}
// Internal for unit testing
internal CompilationResult GetCompilationFailedResult(RelativeFileInfo file, IEnumerable <RazorError> errors)
{
// If a SourceLocation does not specify a file path, assume it is produced
// from parsing the current file.
var messageGroups = errors
.GroupBy(razorError =>
razorError.Location.FilePath ?? file.RelativePath,
StringComparer.Ordinal);
var failures = new List <CompilationFailure>();
foreach (var group in messageGroups)
{
var filePath = group.Key;
var fileContent = ReadFileContentsSafely(filePath);
var compilationFailure = new CompilationFailure(
filePath,
fileContent,
compiledContent: string.Empty,
messages: group.Select(parserError => CreateDiagnosticMessage(parserError, filePath)));
failures.Add(compilationFailure);
}
return(new CompilationResult(failures));
}
private CompilerCacheResult CreateCacheEntry(
string normalizedPath,
Func <RelativeFileInfo, CompilationResult> compile)
{
CompilerCacheResult cacheResult;
var fileInfo = _fileProvider.GetFileInfo(normalizedPath);
MemoryCacheEntryOptions cacheEntryOptions;
CompilerCacheResult cacheResultToCache;
if (!fileInfo.Exists)
{
cacheResultToCache = CompilerCacheResult.FileNotFound;
cacheResult = CompilerCacheResult.FileNotFound;
cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.AddExpirationToken(_fileProvider.Watch(normalizedPath));
}
else
{
var relativeFileInfo = new RelativeFileInfo(fileInfo, normalizedPath);
var compilationResult = compile(relativeFileInfo).EnsureSuccessful();
cacheEntryOptions = GetMemoryCacheEntryOptions(normalizedPath);
// By default the CompilationResult returned by IRoslynCompiler is an instance of
// UncachedCompilationResult. This type has the generated code as a string property and do not want
// to cache it. We'll instead cache the unwrapped result.
cacheResultToCache = new CompilerCacheResult(
CompilationResult.Successful(compilationResult.CompiledType));
cacheResult = new CompilerCacheResult(compilationResult);
}
_cache.Set(normalizedPath, cacheResultToCache, cacheEntryOptions);
return(cacheResult);
}
public void Compile_ReturnsCompilationFailureWithPathsFromLinePragmas()
{
// Arrange
var viewPath = "some-relative-path";
var fileContent = "test file content";
var content = $@"
#line 1 ""{viewPath}""
this should fail";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = Mock.Of<IMvcRazorHost>();
var fileProvider = new TestFileProvider();
var fileInfo = fileProvider.AddFile(viewPath, fileContent);
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost,
GetOptions(),
GetFileProviderAccessor(fileProvider),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(fileInfo, "some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType<CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal(relativeFileInfo.RelativePath, compilationFailure.SourceFilePath);
Assert.Equal(fileContent, compilationFailure.SourceFileContent);
}
public void Compile_ReturnsCompilationFailureWithPathsFromLinePragmas()
{
// Arrange
var viewPath = "some-relative-path";
var fileContent = "test file content";
var content = $@"
#line 1 ""{viewPath}""
this should fail";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = Mock.Of <IMvcRazorHost>();
var fileProvider = new TestFileProvider();
var fileInfo = fileProvider.AddFile(viewPath, fileContent);
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost,
GetOptions(),
GetFileProviderAccessor(fileProvider),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(fileInfo, "some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType <CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal(relativeFileInfo.RelativePath, compilationFailure.SourceFilePath);
Assert.Equal(fileContent, compilationFailure.SourceFileContent);
}
/// <inheritdoc />
public CompilationResult Compile([NotNull] RelativeFileInfo file)
{
GeneratorResults results;
using (var inputStream = file.FileInfo.CreateReadStream())
{
results = _razorHost.GenerateCode(file.RelativePath, inputStream);
}
if (!results.Success)
{
return(GetCompilationFailedResult(file, results.ParserErrors));
}
return(_compilationService.Compile(file, results.GeneratedCode));
}
public void Compile_DoesNotThrow_IfFileCannotBeRead()
{
// Arrange
var path = "some-relative-path";
var content = $@"
#line 1 ""{path}""
this should fail";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryManager = GetLibraryManager();
var compilerOptionsProvider = new Mock <ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = Mock.Of <IMvcRazorHost>();
var mockFileInfo = new Mock <IFileInfo>();
mockFileInfo.Setup(f => f.CreateReadStream())
.Throws(new Exception());
var fileProvider = new TestFileProvider();
fileProvider.AddFile(path, mockFileInfo.Object);
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryManager,
compilerOptionsProvider.Object,
mvcRazorHost,
GetOptions(fileProvider));
var relativeFileInfo = new RelativeFileInfo(mockFileInfo.Object, path);
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType <CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal(path, compilationFailure.SourceFilePath);
Assert.Null(compilationFailure.SourceFileContent);
}
public void Compile_UsesApplicationsCompilationSettings_ForParsingAndCompilation()
{
// Arrange
var content = @"
#if MY_CUSTOM_DEFINE
public class MyCustomDefinedClass {}
#else
public class MyNonCustomDefinedClass {}
#endif
";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryManager = GetLibraryManager();
var compilerOptionsProvider = new Mock <ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions {
Defines = new[] { "MY_CUSTOM_DEFINE" }
});
var mvcRazorHost = new Mock <IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns("My");
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryManager,
compilerOptionsProvider.Object,
mvcRazorHost.Object,
GetOptions());
var relativeFileInfo = new RelativeFileInfo(new TestFileInfo {
PhysicalPath = "SomePath"
},
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.NotNull(result.CompiledType);
Assert.Equal("MyCustomDefinedClass", result.CompiledType.Name);
}
public void GetOrAdd_IgnoresCachedValueIfFileIsIdentical_ButViewImportsWasAdedSinceTheCacheWasCreated()
{
// Arrange
var expectedType = typeof(RuntimeCompileDifferent);
var fileProvider = new TestFileProvider();
var collection = new ViewCollection();
var precompiledFile = collection.FileInfos[0];
precompiledFile.RelativePath = "Views\\home\\index.cshtml";
var cache = new CompilerCache(new[] { collection }, TestLoadContext, fileProvider);
var testFile = new TestFileInfo
{
Content = new PreCompile().Content,
LastModified = precompiledFile.LastModified,
PhysicalPath = precompiledFile.RelativePath
};
fileProvider.AddFile(precompiledFile.RelativePath, testFile);
var relativeFile = new RelativeFileInfo(testFile, testFile.PhysicalPath);
// Act 1
var result1 = cache.GetOrAdd(testFile.PhysicalPath,
compile: _ => { throw new Exception("should not be called"); });
// Assert 1
Assert.NotSame(CompilerCacheResult.FileNotFound, result1);
var actual1 = result1.CompilationResult;
Assert.NotNull(actual1);
Assert.Equal(typeof(PreCompile), actual1.CompiledType);
// Act 2
var globalTrigger = fileProvider.GetTrigger("Views\\_ViewImports.cshtml");
globalTrigger.IsExpired = true;
var result2 = cache.GetOrAdd(testFile.PhysicalPath,
compile: _ => CompilationResult.Successful(expectedType));
// Assert 2
Assert.NotSame(CompilerCacheResult.FileNotFound, result2);
var actual2 = result2.CompilationResult;
Assert.NotNull(actual2);
Assert.Equal(expectedType, actual2.CompiledType);
}
private GetOrAddResult OnCacheMiss(RelativeFileInfo file,
string normalizedPath,
Func <RelativeFileInfo, CompilationResult> compile)
{
var compilationResult = compile(file).EnsureSuccessful();
// Concurrent addition to MemoryCache with the same key result in safe race.
var compilerCacheEntry = new CompilerCacheEntry(file, compilationResult.CompiledType);
var cacheEntry = _cache.Set <CompilerCacheEntry>(
normalizedPath,
compilerCacheEntry,
GetMemoryCacheEntryOptions(compilerCacheEntry.RelativePath));
return(new GetOrAddResult
{
CompilationResult = compilationResult,
CompilerCacheEntry = cacheEntry
});
}
public void Compile_ReturnsFailedResultIfParseFails()
{
// Arrange
var errorSink = new ErrorSink();
errorSink.OnError(new RazorError("some message", 1, 1, 1, 1));
var generatorResult = new GeneratorResults(
new Block(new BlockBuilder {
Type = BlockType.Comment
}),
Enumerable.Empty <TagHelperDescriptor>(),
errorSink,
new CodeGeneratorResult("", new LineMapping[0]),
new ChunkTree());
var host = new Mock <IMvcRazorHost>();
host.Setup(h => h.GenerateCode(It.IsAny <string>(), It.IsAny <Stream>()))
.Returns(generatorResult)
.Verifiable();
var fileInfo = new Mock <IFileInfo>();
fileInfo.Setup(f => f.CreateReadStream())
.Returns(Stream.Null);
var compiler = new Mock <ICompilationService>(MockBehavior.Strict);
var relativeFileInfo = new RelativeFileInfo(fileInfo.Object, @"Views\index\home.cshtml");
var razorService = new RazorCompilationService(compiler.Object, host.Object, GetOptions());
// Act
var result = razorService.Compile(relativeFileInfo);
// Assert
Assert.NotNull(result.CompilationFailures);
Assert.Collection(result.CompilationFailures,
failure =>
{
var message = Assert.Single(failure.Messages);
Assert.Equal("some message", message.Message);
});
host.Verify();
}
/// <inheritdoc />
public CompilationResult Compile(RelativeFileInfo file)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
GeneratorResults results;
using (var inputStream = file.FileInfo.CreateReadStream())
{
results = GenerateCode(file.RelativePath, inputStream);
}
if (!results.Success)
{
return GetCompilationFailedResult(file, results.ParserErrors);
}
return _compilationService.Compile(file, results.GeneratedCode);
}
public void Compile_ReturnsCompilationFailureWithPathsFromLinePragmas()
{
// Arrange
var viewPath = "some-relative-path";
var fileContent = "test file content";
var content = $@"
#line 1 ""{viewPath}""
this should fail";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryManager = GetLibraryManager();
var compilerOptionsProvider = new Mock <ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = Mock.Of <IMvcRazorHost>();
var fileProvider = new TestFileProvider();
var fileInfo = fileProvider.AddFile(viewPath, fileContent);
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryManager,
compilerOptionsProvider.Object,
mvcRazorHost,
GetOptions(fileProvider));
var relativeFileInfo = new RelativeFileInfo(fileInfo, "some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType <CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal(relativeFileInfo.RelativePath, compilationFailure.SourceFilePath);
Assert.Equal(fileContent, compilationFailure.SourceFileContent);
}
public void Compile_UsesApplicationsCompilationSettings_ForParsingAndCompilation()
{
// Arrange
var content = @"
#if MY_CUSTOM_DEFINE
public class MyCustomDefinedClass {}
#else
public class MyNonCustomDefinedClass {}
#endif
";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = new Mock <IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns("My");
var options = GetOptions();
options.Value.ParseOptions = options.Value.ParseOptions.WithPreprocessorSymbols("MY_CUSTOM_DEFINE");
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost.Object,
options,
GetFileProviderAccessor(),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(
new TestFileInfo {
PhysicalPath = "SomePath"
},
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.NotNull(result.CompiledType);
Assert.Equal("MyCustomDefinedClass", result.CompiledType.Name);
}
/// <inheritdoc />
public CompilationResult Compile(RelativeFileInfo file)
{
if (file == null)
{
throw new ArgumentNullException(nameof(file));
}
GeneratorResults results;
using (var inputStream = file.FileInfo.CreateReadStream())
{
results = GenerateCode(file.RelativePath, inputStream);
}
if (!results.Success)
{
return(GetCompilationFailedResult(file, results.ParserErrors));
}
return(_compilationService.Compile(file, results.GeneratedCode));
}
public void Compile_DoesNotThrow_IfFileCannotBeRead()
{
// Arrange
var path = "some-relative-path";
var content = $@"
#line 1 ""{path}""
this should fail";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = Mock.Of <IMvcRazorHost>();
var mockFileInfo = new Mock <IFileInfo>();
mockFileInfo.Setup(f => f.CreateReadStream())
.Throws(new Exception());
var fileProvider = new TestFileProvider();
fileProvider.AddFile(path, mockFileInfo.Object);
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost,
GetOptions(),
GetFileProviderAccessor(fileProvider),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(mockFileInfo.Object, path);
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType <CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal(path, compilationFailure.SourceFilePath);
Assert.Null(compilationFailure.SourceFileContent);
}
public void Compile_ReturnsSingleTypeThatStartsWithMainClassNamePrefix()
{
// Arrange
var content = @"
public class RazorPrefixType {}
public class NotRazorPrefixType {}";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryManager = GetLibraryManager();
var compilerOptionsProvider = new Mock <ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = new Mock <IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns("RazorPrefix");
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryManager,
compilerOptionsProvider.Object,
mvcRazorHost.Object,
GetOptions());
var relativeFileInfo = new RelativeFileInfo(new TestFileInfo {
PhysicalPath = "SomePath"
},
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.NotNull(result.CompiledType);
Assert.Equal("RazorPrefixType", result.CompiledType.Name);
}
public void Compile_ReturnsUncachedCompilationResultWithCompiledContent()
{
// Arrange
var content = @"
public class MyTestType {}";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryManager = GetLibraryManager();
var compilerOptionsProvider = new Mock <ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = new Mock <IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns(string.Empty);
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryManager,
compilerOptionsProvider.Object,
mvcRazorHost.Object,
GetOptions());
var relativeFileInfo = new RelativeFileInfo(new TestFileInfo {
PhysicalPath = "SomePath"
},
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
var uncachedResult = Assert.IsType <UncachedCompilationResult>(result);
Assert.Equal("MyTestType", result.CompiledType.Name);
Assert.Equal(content, uncachedResult.CompiledContent);
}
public void Compile_ReturnsGeneratedCodePath_IfLinePragmaIsNotAvailable()
{
// Arrange
var fileContent = "file content";
var content = @"this should fail";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryManager = GetLibraryManager();
var compilerOptionsProvider = new Mock <ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = Mock.Of <IMvcRazorHost>();
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryManager,
compilerOptionsProvider.Object,
mvcRazorHost,
GetOptions());
var relativeFileInfo = new RelativeFileInfo(new TestFileInfo {
Content = fileContent
},
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType <CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal("Generated Code", compilationFailure.SourceFilePath);
Assert.Equal(content, compilationFailure.SourceFileContent);
}
public void Compile_ReturnsCompilationFailureWithPathsFromLinePragmas()
{
// Arrange
var viewPath = "some-relative-path";
var fileContent = "test file content";
var content = $@"
#line 1 ""{viewPath}""
this should fail";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryExporter = GetLibraryExporter();
var compilerOptionsProvider = new Mock<ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = Mock.Of<IMvcRazorHost>();
var fileProvider = new TestFileProvider();
var fileInfo = fileProvider.AddFile(viewPath, fileContent);
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryExporter,
compilerOptionsProvider.Object,
mvcRazorHost,
GetOptions(fileProvider));
var relativeFileInfo = new RelativeFileInfo(fileInfo, "some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType<CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal(relativeFileInfo.RelativePath, compilationFailure.SourceFilePath);
Assert.Equal(fileContent, compilationFailure.SourceFileContent);
}
/// <inheritdoc />
public CompilerCacheResult GetOrAdd(
[NotNull] string relativePath,
[NotNull] Func <RelativeFileInfo, CompilationResult> compile)
{
var normalizedPath = NormalizePath(relativePath);
CompilerCacheResult cacheResult;
if (!_cache.TryGetValue(normalizedPath, out cacheResult))
{
var fileInfo = _fileProvider.GetFileInfo(relativePath);
MemoryCacheEntryOptions cacheEntryOptions;
CompilerCacheResult cacheResultToCache;
if (!fileInfo.Exists)
{
cacheResultToCache = CompilerCacheResult.FileNotFound;
cacheResult = CompilerCacheResult.FileNotFound;
cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.AddExpirationTrigger(_fileProvider.Watch(relativePath));
}
else
{
var relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
var compilationResult = compile(relativeFileInfo).EnsureSuccessful();
cacheEntryOptions = GetMemoryCacheEntryOptions(relativePath);
// By default the CompilationResult returned by IRoslynCompiler is an instance of
// UncachedCompilationResult. This type has the generated code as a string property and do not want
// to cache it. We'll instead cache the unwrapped result.
cacheResultToCache = new CompilerCacheResult(
CompilationResult.Successful(compilationResult.CompiledType));
cacheResult = new CompilerCacheResult(compilationResult);
}
_cache.Set(normalizedPath, cacheResultToCache, cacheEntryOptions);
}
return(cacheResult);
}
public void Compile_ReturnsResultFromCompilationServiceIfParseSucceeds()
{
// Arrange
var code = "compiled-content";
var generatorResult = new GeneratorResults(
new Block(new BlockBuilder {
Type = BlockType.Comment
}),
Enumerable.Empty <TagHelperDescriptor>(),
new ErrorSink(),
new CodeGeneratorResult(code, new LineMapping[0]),
new ChunkTree());
var host = new Mock <IMvcRazorHost>();
host.Setup(h => h.GenerateCode(It.IsAny <string>(), It.IsAny <Stream>()))
.Returns(generatorResult);
var fileInfo = new Mock <IFileInfo>();
fileInfo.Setup(f => f.CreateReadStream())
.Returns(Stream.Null);
var relativeFileInfo = new RelativeFileInfo(fileInfo.Object, @"Views\index\home.cshtml");
var compilationResult = CompilationResult.Successful(typeof(object));
var compiler = new Mock <ICompilationService>();
compiler.Setup(c => c.Compile(relativeFileInfo, code))
.Returns(compilationResult)
.Verifiable();
var razorService = new RazorCompilationService(compiler.Object, host.Object, GetOptions());
// Act
var result = razorService.Compile(relativeFileInfo);
// Assert
Assert.Same(compilationResult, result);
compiler.Verify();
}
/// <inheritdoc />
public CompilerCacheResult GetOrAdd(
[NotNull] string relativePath,
[NotNull] Func<RelativeFileInfo, CompilationResult> compile)
{
var normalizedPath = NormalizePath(relativePath);
CompilerCacheResult cacheResult;
if (!_cache.TryGetValue(normalizedPath, out cacheResult))
{
var fileInfo = _fileProvider.GetFileInfo(relativePath);
MemoryCacheEntryOptions cacheEntryOptions;
CompilerCacheResult cacheResultToCache;
if (!fileInfo.Exists)
{
cacheResultToCache = CompilerCacheResult.FileNotFound;
cacheResult = CompilerCacheResult.FileNotFound;
cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.AddExpirationTrigger(_fileProvider.Watch(relativePath));
}
else
{
var relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
var compilationResult = compile(relativeFileInfo).EnsureSuccessful();
cacheEntryOptions = GetMemoryCacheEntryOptions(relativePath);
// By default the CompilationResult returned by IRoslynCompiler is an instance of
// UncachedCompilationResult. This type has the generated code as a string property and do not want
// to cache it. We'll instead cache the unwrapped result.
cacheResultToCache = new CompilerCacheResult(
CompilationResult.Successful(compilationResult.CompiledType));
cacheResult = new CompilerCacheResult(compilationResult);
}
_cache.Set(normalizedPath, cacheResultToCache, cacheEntryOptions);
}
return cacheResult;
}
// Internal for unit testing
internal CompilationResult GetCompilationFailedResult(RelativeFileInfo file, IEnumerable<RazorError> errors)
{
// If a SourceLocation does not specify a file path, assume it is produced
// from parsing the current file.
var messageGroups = errors
.GroupBy(razorError =>
razorError.Location.FilePath ?? file.RelativePath,
StringComparer.Ordinal);
var failures = new List<CompilationFailure>();
foreach (var group in messageGroups)
{
var filePath = group.Key;
var fileContent = ReadFileContentsSafely(filePath);
var compilationFailure = new CompilationFailure(
filePath,
fileContent,
group.Select(parserError => CreateDiagnosticMessage(parserError, filePath)));
failures.Add(compilationFailure);
}
return CompilationResult.Failed(failures);
}
public void Compile_ReturnsFailedResultIfParseFails()
{
// Arrange
var errorSink = new ErrorSink();
errorSink.OnError(new RazorError("some message", 1, 1, 1, 1));
var generatorResult = new GeneratorResults(
new Block(new BlockBuilder { Type = BlockType.Comment }),
Enumerable.Empty<TagHelperDescriptor>(),
errorSink,
new CodeGeneratorResult("", new LineMapping[0]),
new ChunkTree());
var host = new Mock<IMvcRazorHost>();
host.Setup(h => h.GenerateCode(It.IsAny<string>(), It.IsAny<Stream>()))
.Returns(generatorResult)
.Verifiable();
var fileInfo = new Mock<IFileInfo>();
fileInfo.Setup(f => f.CreateReadStream())
.Returns(Stream.Null);
var compiler = new Mock<ICompilationService>(MockBehavior.Strict);
var relativeFileInfo = new RelativeFileInfo(fileInfo.Object, @"Views\index\home.cshtml");
var razorService = new RazorCompilationService(compiler.Object, host.Object, GetOptions());
// Act
var result = razorService.Compile(relativeFileInfo);
// Assert
Assert.NotNull(result.CompilationFailures);
Assert.Collection(result.CompilationFailures,
failure =>
{
var message = Assert.Single(failure.Messages);
Assert.Equal("some message", message.Message);
});
host.Verify();
}
/// <inheritdoc />
public CompilationResult Compile(RelativeFileInfo fileInfo, string compilationContent)
{
if (fileInfo == null)
{
throw new ArgumentNullException(nameof(fileInfo));
}
if (compilationContent == null)
{
throw new ArgumentNullException(nameof(compilationContent));
}
var assemblyName = Path.GetRandomFileName();
var compilationSettings = _compilerOptionsProvider.GetCompilationSettings(_environment);
var syntaxTree = SyntaxTreeGenerator.Generate(
compilationContent,
assemblyName,
compilationSettings);
var references = _applicationReferences.Value;
var compilationOptions = compilationSettings
.CompilationOptions
.WithOutputKind(OutputKind.DynamicallyLinkedLibrary);
var compilation = CSharpCompilation.Create(
assemblyName,
options: compilationOptions,
syntaxTrees: new[] { syntaxTree },
references: references);
compilation = Rewrite(compilation);
using (var ms = new MemoryStream())
{
using (var pdb = new MemoryStream())
{
EmitResult result;
if (_supportsPdbGeneration.Value)
{
result = compilation.Emit(ms, pdbStream: pdb);
}
else
{
result = compilation.Emit(ms);
}
if (!result.Success)
{
return GetCompilationFailedResult(
fileInfo.RelativePath,
compilationContent,
assemblyName,
result.Diagnostics);
}
Assembly assembly;
ms.Seek(0, SeekOrigin.Begin);
if (_supportsPdbGeneration.Value)
{
pdb.Seek(0, SeekOrigin.Begin);
assembly = LoadStream(ms, pdb);
}
else
{
assembly = LoadStream(ms, assemblySymbols: null);
}
var type = assembly.GetExportedTypes()
.First(t => t.Name.StartsWith(_classPrefix, StringComparison.Ordinal));
return UncachedCompilationResult.Successful(type, compilationContent);
}
}
}
private GetOrAddResult OnCacheMiss(RelativeFileInfo file,
string normalizedPath,
Func<RelativeFileInfo, CompilationResult> compile)
{
var compilationResult = compile(file).EnsureSuccessful();
// Concurrent addition to MemoryCache with the same key result in safe race.
var compilerCacheEntry = new CompilerCacheEntry(file, compilationResult.CompiledType);
var cacheEntry = _cache.Set<CompilerCacheEntry>(
normalizedPath,
compilerCacheEntry,
GetMemoryCacheEntryOptions(compilerCacheEntry.RelativePath));
return new GetOrAddResult
{
CompilationResult = compilationResult,
CompilerCacheEntry = cacheEntry
};
}
public void Compile_DoesNotThrow_IfFileCannotBeRead()
{
// Arrange
var path = "some-relative-path";
var content = $@"
#line 1 ""{path}""
this should fail";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = Mock.Of<IMvcRazorHost>();
var mockFileInfo = new Mock<IFileInfo>();
mockFileInfo.Setup(f => f.CreateReadStream())
.Throws(new Exception());
var fileProvider = new TestFileProvider();
fileProvider.AddFile(path, mockFileInfo.Object);
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost,
GetOptions(),
GetFileProviderAccessor(fileProvider),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(mockFileInfo.Object, path);
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType<CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal(path, compilationFailure.SourceFilePath);
Assert.Null(compilationFailure.SourceFileContent);
}
public void GetCompilationFailedResult_ReturnsCompilationResult_WithGroupedMessages()
{
// Arrange
var viewPath = @"views/index.razor";
var viewImportsPath = @"views/global.import.cshtml";
var host = Mock.Of <IMvcRazorHost>();
var fileProvider = new TestFileProvider();
var file = fileProvider.AddFile(viewPath, "View Content");
fileProvider.AddFile(viewImportsPath, "Global Import Content");
var relativeFileInfo = new RelativeFileInfo(file, viewPath);
var razorService = new RazorCompilationService(
Mock.Of <ICompilationService>(),
Mock.Of <IMvcRazorHost>(),
GetOptions(fileProvider));
var errors = new[]
{
new RazorError("message-1", new SourceLocation(1, 2, 17), length: 1),
new RazorError("message-2", new SourceLocation(viewPath, 1, 4, 6), 7),
new RazorError {
Message = "message-3"
},
new RazorError("message-4", new SourceLocation(viewImportsPath, 1, 3, 8), 4),
};
// Act
var result = razorService.GetCompilationFailedResult(relativeFileInfo, errors);
// Assert
Assert.NotNull(result.CompilationFailures);
Assert.Collection(result.CompilationFailures,
failure =>
{
Assert.Equal(viewPath, failure.SourceFilePath);
Assert.Equal("View Content", failure.SourceFileContent);
Assert.Collection(failure.Messages,
message =>
{
Assert.Equal(errors[0].Message, message.Message);
Assert.Equal(viewPath, message.SourceFilePath);
Assert.Equal(3, message.StartLine);
Assert.Equal(17, message.StartColumn);
Assert.Equal(3, message.EndLine);
Assert.Equal(18, message.EndColumn);
},
message =>
{
Assert.Equal(errors[1].Message, message.Message);
Assert.Equal(viewPath, message.SourceFilePath);
Assert.Equal(5, message.StartLine);
Assert.Equal(6, message.StartColumn);
Assert.Equal(5, message.EndLine);
Assert.Equal(13, message.EndColumn);
},
message =>
{
Assert.Equal(errors[2].Message, message.Message);
Assert.Equal(viewPath, message.SourceFilePath);
Assert.Equal(0, message.StartLine);
Assert.Equal(-1, message.StartColumn);
Assert.Equal(0, message.EndLine);
Assert.Equal(-2, message.EndColumn);
});
},
failure =>
{
Assert.Equal(viewImportsPath, failure.SourceFilePath);
Assert.Equal("Global Import Content", failure.SourceFileContent);
Assert.Collection(failure.Messages,
message =>
{
Assert.Equal(errors[3].Message, message.Message);
Assert.Equal(viewImportsPath, message.SourceFilePath);
Assert.Equal(4, message.StartLine);
Assert.Equal(8, message.StartColumn);
Assert.Equal(4, message.EndLine);
Assert.Equal(12, message.EndColumn);
});
});
}
public void Compile_RunsCallback()
{
var content = "public class MyTestType {}";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
RoslynCompilationContext usedCompilation = null;
var mvcRazorHost = new Mock<IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns(string.Empty);
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost.Object,
GetOptions(callback: c => usedCompilation = c),
GetFileProviderAccessor(),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(
new TestFileInfo { PhysicalPath = "SomePath" },
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
Assert.NotNull(usedCompilation);
Assert.NotNull(usedCompilation.Compilation);
Assert.Equal(1, usedCompilation.Compilation.SyntaxTrees.Length);
}
private CompilationResult ThrowsIfCalled(RelativeFileInfo file)
{
throw new Exception("Shouldn't be called");
}
public void Compile_DoesNotThrow_IfFileCannotBeRead()
{
// Arrange
var path = "some-relative-path";
var content = $@"
#line 1 ""{path}""
this should fail";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryExporter = GetLibraryExporter();
var compilerOptionsProvider = new Mock<ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = Mock.Of<IMvcRazorHost>();
var mockFileInfo = new Mock<IFileInfo>();
mockFileInfo.Setup(f => f.CreateReadStream())
.Throws(new Exception());
var fileProvider = new TestFileProvider();
fileProvider.AddFile(path, mockFileInfo.Object);
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryExporter,
compilerOptionsProvider.Object,
mvcRazorHost,
GetOptions(fileProvider));
var relativeFileInfo = new RelativeFileInfo(mockFileInfo.Object, path);
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType<CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal(path, compilationFailure.SourceFilePath);
Assert.Null(compilationFailure.SourceFileContent);
}
public void Compile_UsesApplicationsCompilationSettings_ForParsingAndCompilation()
{
// Arrange
var content = @"
#if MY_CUSTOM_DEFINE
public class MyCustomDefinedClass {}
#else
public class MyNonCustomDefinedClass {}
#endif
";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryExporter = GetLibraryExporter();
var compilerOptionsProvider = new Mock<ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions { Defines = new[] { "MY_CUSTOM_DEFINE" } });
var mvcRazorHost = new Mock<IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns("My");
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryExporter,
compilerOptionsProvider.Object,
mvcRazorHost.Object,
GetOptions());
var relativeFileInfo = new RelativeFileInfo(new TestFileInfo { PhysicalPath = "SomePath" },
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.NotNull(result.CompiledType);
Assert.Equal("MyCustomDefinedClass", result.CompiledType.Name);
}
public void Compile_ReturnsSingleTypeThatStartsWithMainClassNamePrefix()
{
// Arrange
var content = @"
public class RazorPrefixType {}
public class NotRazorPrefixType {}";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryExporter = GetLibraryExporter();
var compilerOptionsProvider = new Mock<ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = new Mock<IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns("RazorPrefix");
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryExporter,
compilerOptionsProvider.Object,
mvcRazorHost.Object,
GetOptions());
var relativeFileInfo = new RelativeFileInfo(new TestFileInfo { PhysicalPath = "SomePath" },
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.NotNull(result.CompiledType);
Assert.Equal("RazorPrefixType", result.CompiledType.Name);
}
public void Compile_ReturnsGeneratedCodePath_IfLinePragmaIsNotAvailable()
{
// Arrange
var fileContent = "file content";
var content = @"this should fail";
var applicationEnvironment = GetApplicationEnvironment();
var accessor = GetLoadContextAccessor();
var libraryExporter = GetLibraryExporter();
var compilerOptionsProvider = new Mock<ICompilerOptionsProvider>();
compilerOptionsProvider.Setup(p => p.GetCompilerOptions(applicationEnvironment.ApplicationName,
applicationEnvironment.RuntimeFramework,
applicationEnvironment.Configuration))
.Returns(new CompilerOptions());
var mvcRazorHost = Mock.Of<IMvcRazorHost>();
var compilationService = new RoslynCompilationService(applicationEnvironment,
accessor,
libraryExporter,
compilerOptionsProvider.Object,
mvcRazorHost,
GetOptions());
var relativeFileInfo = new RelativeFileInfo(new TestFileInfo { Content = fileContent },
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType<CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal("Generated Code", compilationFailure.SourceFilePath);
Assert.Equal(content, compilationFailure.SourceFileContent);
}
/// <inheritdoc />
public CompilationResult Compile([NotNull] RelativeFileInfo fileInfo, [NotNull] string compilationContent)
{
var assemblyName = Path.GetRandomFileName();
var compilationSettings = _compilerOptionsProvider.GetCompilationSettings(_environment);
var syntaxTree = SyntaxTreeGenerator.Generate(compilationContent,
assemblyName,
compilationSettings);
var references = _applicationReferences.Value;
var compilationOptions = compilationSettings.CompilationOptions
.WithOutputKind(OutputKind.DynamicallyLinkedLibrary);
var compilation = CSharpCompilation.Create(assemblyName,
options: compilationOptions,
syntaxTrees: new[] { syntaxTree },
references: references);
using (var ms = new MemoryStream())
{
using (var pdb = new MemoryStream())
{
EmitResult result;
if (_supportsPdbGeneration.Value)
{
result = compilation.Emit(ms, pdbStream: pdb);
}
else
{
result = compilation.Emit(ms);
}
if (!result.Success)
{
return(GetCompilationFailedResult(
fileInfo.RelativePath,
compilationContent,
assemblyName,
result.Diagnostics));
}
Assembly assembly;
ms.Seek(0, SeekOrigin.Begin);
if (_supportsPdbGeneration.Value)
{
pdb.Seek(0, SeekOrigin.Begin);
assembly = _loader.LoadStream(ms, pdb);
}
else
{
assembly = _loader.LoadStream(ms, assemblySymbols: null);
}
var type = assembly.GetExportedTypes()
.First(t => t.Name.StartsWith(_classPrefix, StringComparison.Ordinal));
return(UncachedCompilationResult.Successful(type, compilationContent));
}
}
}
private GetOrAddResult GetOrAddCore(string relativePath,
Func <RelativeFileInfo, CompilationResult> compile)
{
var normalizedPath = NormalizePath(relativePath);
var cacheEntry = _cache.Get <CompilerCacheEntry>(normalizedPath);
if (cacheEntry == null)
{
var fileInfo = _fileProvider.GetFileInfo(relativePath);
if (!fileInfo.Exists)
{
return(null);
}
var relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
return(OnCacheMiss(relativeFileInfo, normalizedPath, compile));
}
else if (cacheEntry.IsPreCompiled && !cacheEntry.IsValidatedPreCompiled)
{
// For precompiled views, the first time the entry is read, we need to ensure that no changes were made
// either to the file associated with this entry, or any _ViewImports associated with it between the time
// the View was precompiled and the time EnsureInitialized was called. For later iterations, we can
// rely on expiration triggers ensuring the validity of the entry.
var fileInfo = _fileProvider.GetFileInfo(relativePath);
if (!fileInfo.Exists)
{
return(null);
}
var relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
if (cacheEntry.Length != fileInfo.Length)
{
// Recompile if the file lengths differ
return(OnCacheMiss(relativeFileInfo, normalizedPath, compile));
}
if (AssociatedGlobalFilesChanged(cacheEntry, compile))
{
// Recompile if _ViewImports have changed since the entry was created.
return(OnCacheMiss(relativeFileInfo, normalizedPath, compile));
}
if (cacheEntry.LastModified == fileInfo.LastModified)
{
// Assigning to IsValidatedPreCompiled is an atomic operation and will result in a safe race
// if it is being concurrently updated and read.
cacheEntry.IsValidatedPreCompiled = true;
return(new GetOrAddResult
{
CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType),
CompilerCacheEntry = cacheEntry
});
}
// Timestamp doesn't match but it might be because of deployment, compare the hash.
if (cacheEntry.IsPreCompiled &&
string.Equals(cacheEntry.Hash,
RazorFileHash.GetHash(fileInfo, cacheEntry.HashAlgorithmVersion),
StringComparison.Ordinal))
{
// Cache hit, but we need to update the entry.
// Assigning to LastModified and IsValidatedPreCompiled are atomic operations and will result in safe race
// if the entry is being concurrently read or updated.
cacheEntry.LastModified = fileInfo.LastModified;
cacheEntry.IsValidatedPreCompiled = true;
return(new GetOrAddResult
{
CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType),
CompilerCacheEntry = cacheEntry
});
}
// it's not a match, recompile
return(OnCacheMiss(relativeFileInfo, normalizedPath, compile));
}
return(new GetOrAddResult
{
CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType),
CompilerCacheEntry = cacheEntry
});
}
private CompilerCacheResult CreateCacheEntry(
string normalizedPath,
Func<RelativeFileInfo, CompilationResult> compile)
{
CompilerCacheResult cacheResult;
var fileInfo = _fileProvider.GetFileInfo(normalizedPath);
MemoryCacheEntryOptions cacheEntryOptions;
CompilerCacheResult cacheResultToCache;
if (!fileInfo.Exists)
{
cacheResultToCache = CompilerCacheResult.FileNotFound;
cacheResult = CompilerCacheResult.FileNotFound;
cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.AddExpirationToken(_fileProvider.Watch(normalizedPath));
}
else
{
var relativeFileInfo = new RelativeFileInfo(fileInfo, normalizedPath);
var compilationResult = compile(relativeFileInfo).EnsureSuccessful();
cacheEntryOptions = GetMemoryCacheEntryOptions(normalizedPath);
// By default the CompilationResult returned by IRoslynCompiler is an instance of
// UncachedCompilationResult. This type has the generated code as a string property and do not want
// to cache it. We'll instead cache the unwrapped result.
cacheResultToCache = new CompilerCacheResult(
CompilationResult.Successful(compilationResult.CompiledType));
cacheResult = new CompilerCacheResult(compilationResult);
}
_cache.Set(normalizedPath, cacheResultToCache, cacheEntryOptions);
return cacheResult;
}
/// <inheritdoc />
public CompilationResult Compile(RelativeFileInfo fileInfo, string compilationContent)
{
if (fileInfo == null)
{
throw new ArgumentNullException(nameof(fileInfo));
}
if (compilationContent == null)
{
throw new ArgumentNullException(nameof(compilationContent));
}
_logger.GeneratedCodeToAssemblyCompilationStart(fileInfo.RelativePath);
var startTimestamp = _logger.IsEnabled(LogLevel.Debug) ? Stopwatch.GetTimestamp() : 0;
var assemblyName = Path.GetRandomFileName();
var syntaxTree = SyntaxTreeGenerator.Generate(
compilationContent,
assemblyName,
_parseOptions);
var references = _applicationReferences.Value;
var compilation = CSharpCompilation.Create(
assemblyName,
options: _compilationOptions,
syntaxTrees: new[] { syntaxTree },
references: references);
compilation = Rewrite(compilation);
var compilationContext = new RoslynCompilationContext(compilation);
_compilationCallback(compilationContext);
compilation = compilationContext.Compilation;
using (var ms = new MemoryStream())
{
using (var pdb = new MemoryStream())
{
EmitResult result;
if (_supportsPdbGeneration.Value)
{
result = compilation.Emit(ms, pdbStream: pdb);
}
else
{
result = compilation.Emit(ms);
}
if (!result.Success)
{
return(GetCompilationFailedResult(
fileInfo.RelativePath,
compilationContent,
assemblyName,
result.Diagnostics));
}
Assembly assembly;
ms.Seek(0, SeekOrigin.Begin);
if (_supportsPdbGeneration.Value)
{
pdb.Seek(0, SeekOrigin.Begin);
assembly = LoadStream(ms, pdb);
}
else
{
assembly = LoadStream(ms, assemblySymbols: null);
}
var type = assembly.GetExportedTypes()
.First(t => t.Name.StartsWith(_classPrefix, StringComparison.Ordinal));
_logger.GeneratedCodeToAssemblyCompilationEnd(fileInfo.RelativePath, startTimestamp);
return(new CompilationResult(type));
}
}
}
/// <inheritdoc />
public CompilationResult Compile(RelativeFileInfo fileInfo, string compilationContent)
{
if (fileInfo == null)
{
throw new ArgumentNullException(nameof(fileInfo));
}
if (compilationContent == null)
{
throw new ArgumentNullException(nameof(compilationContent));
}
_logger.GeneratedCodeToAssemblyCompilationStart(fileInfo.RelativePath);
var startTimestamp = _logger.IsEnabled(LogLevel.Debug) ? Stopwatch.GetTimestamp() : 0;
var assemblyName = Path.GetRandomFileName();
var syntaxTree = SyntaxTreeGenerator.Generate(
compilationContent,
assemblyName,
_parseOptions);
var references = _applicationReferences.Value;
var compilation = CSharpCompilation.Create(
assemblyName,
options: _compilationOptions,
syntaxTrees: new[] { syntaxTree },
references: references);
compilation = Rewrite(compilation);
var compilationContext = new RoslynCompilationContext(compilation);
_compilationCallback(compilationContext);
compilation = compilationContext.Compilation;
using (var ms = new MemoryStream())
{
using (var pdb = new MemoryStream())
{
EmitResult result;
if (_supportsPdbGeneration.Value)
{
result = compilation.Emit(ms, pdbStream: pdb);
}
else
{
result = compilation.Emit(ms);
}
if (!result.Success)
{
return GetCompilationFailedResult(
fileInfo.RelativePath,
compilationContent,
assemblyName,
result.Diagnostics);
}
Assembly assembly;
ms.Seek(0, SeekOrigin.Begin);
if (_supportsPdbGeneration.Value)
{
pdb.Seek(0, SeekOrigin.Begin);
assembly = LoadStream(ms, pdb);
}
else
{
assembly = LoadStream(ms, assemblySymbols: null);
}
var type = assembly.GetExportedTypes()
.First(t => t.Name.StartsWith(_classPrefix, StringComparison.Ordinal));
_logger.GeneratedCodeToAssemblyCompilationEnd(fileInfo.RelativePath, startTimestamp);
return new CompilationResult(type);
}
}
}
public void Compile_ReturnsGeneratedCodePath_IfLinePragmaIsNotAvailable()
{
// Arrange
var fileContent = "file content";
var content = @"this should fail";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = Mock.Of<IMvcRazorHost>();
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost,
GetOptions(),
GetFileProviderAccessor(),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(
new TestFileInfo { Content = fileContent },
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.IsType<CompilationResult>(result);
Assert.Null(result.CompiledType);
var compilationFailure = Assert.Single(result.CompilationFailures);
Assert.Equal("Generated Code", compilationFailure.SourceFilePath);
Assert.Equal(content, compilationFailure.SourceFileContent);
}
private Task <CompilerCacheResult> CreateCacheEntry(
string normalizedPath,
Func <RelativeFileInfo, CompilationResult> compile)
{
TaskCompletionSource <CompilerCacheResult> compilationTaskSource = null;
MemoryCacheEntryOptions cacheEntryOptions = null;
IFileInfo fileInfo = null;
Task <CompilerCacheResult> cacheEntry;
// Safe races cannot be allowed when compiling Razor pages. To ensure only one compilation request succeeds
// per file, we'll lock the creation of a cache entry. Creating the cache entry should be very quick. The
// actual work for compiling files happens outside the critical section.
lock (_cacheLock)
{
if (_cache.TryGetValue(normalizedPath, out cacheEntry))
{
return(cacheEntry);
}
fileInfo = _fileProvider.GetFileInfo(normalizedPath);
if (!fileInfo.Exists)
{
var expirationToken = _fileProvider.Watch(normalizedPath);
cacheEntry = Task.FromResult(new CompilerCacheResult(new[] { expirationToken }));
cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.AddExpirationToken(expirationToken);
}
else
{
cacheEntryOptions = GetMemoryCacheEntryOptions(normalizedPath);
// A file exists and needs to be compiled.
compilationTaskSource = new TaskCompletionSource <CompilerCacheResult>();
cacheEntry = compilationTaskSource.Task;
}
cacheEntry = _cache.Set <Task <CompilerCacheResult> >(normalizedPath, cacheEntry, cacheEntryOptions);
}
if (compilationTaskSource != null)
{
// Indicates that the file was found and needs to be compiled.
Debug.Assert(fileInfo != null && fileInfo.Exists);
Debug.Assert(cacheEntryOptions != null);
var relativeFileInfo = new RelativeFileInfo(fileInfo, normalizedPath);
try
{
var compilationResult = compile(relativeFileInfo);
compilationResult.EnsureSuccessful();
compilationTaskSource.SetResult(
new CompilerCacheResult(compilationResult, cacheEntryOptions.ExpirationTokens));
}
catch (Exception ex)
{
compilationTaskSource.SetException(ex);
}
}
return(cacheEntry);
}
private CompilationResult ThrowsIfCalled(RelativeFileInfo file)
{
throw new Exception("Shouldn't be called");
}
private Task<CompilerCacheResult> CreateCacheEntry(
string normalizedPath,
Func<RelativeFileInfo, CompilationResult> compile)
{
TaskCompletionSource<CompilerCacheResult> compilationTaskSource = null;
MemoryCacheEntryOptions cacheEntryOptions = null;
IFileInfo fileInfo = null;
Task<CompilerCacheResult> cacheEntry;
// Safe races cannot be allowed when compiling Razor pages. To ensure only one compilation request succeeds
// per file, we'll lock the creation of a cache entry. Creating the cache entry should be very quick. The
// actual work for compiling files happens outside the critical section.
lock (_cacheLock)
{
if (_cache.TryGetValue(normalizedPath, out cacheEntry))
{
return cacheEntry;
}
fileInfo = _fileProvider.GetFileInfo(normalizedPath);
if (!fileInfo.Exists)
{
var expirationToken = _fileProvider.Watch(normalizedPath);
cacheEntry = Task.FromResult(new CompilerCacheResult(new[] { expirationToken }));
cacheEntryOptions = new MemoryCacheEntryOptions();
cacheEntryOptions.AddExpirationToken(expirationToken);
}
else
{
cacheEntryOptions = GetMemoryCacheEntryOptions(normalizedPath);
// A file exists and needs to be compiled.
compilationTaskSource = new TaskCompletionSource<CompilerCacheResult>();
cacheEntry = compilationTaskSource.Task;
}
cacheEntry = _cache.Set<Task<CompilerCacheResult>>(normalizedPath, cacheEntry, cacheEntryOptions);
}
if (compilationTaskSource != null)
{
// Indicates that the file was found and needs to be compiled.
Debug.Assert(fileInfo != null && fileInfo.Exists);
Debug.Assert(cacheEntryOptions != null);
var relativeFileInfo = new RelativeFileInfo(fileInfo, normalizedPath);
try
{
var compilationResult = compile(relativeFileInfo);
compilationResult.EnsureSuccessful();
compilationTaskSource.SetResult(
new CompilerCacheResult(compilationResult, cacheEntryOptions.ExpirationTokens));
}
catch (Exception ex)
{
compilationTaskSource.SetException(ex);
}
}
return cacheEntry;
}
public void Compile_UsesApplicationsCompilationSettings_ForParsingAndCompilation()
{
// Arrange
var content = @"
#if MY_CUSTOM_DEFINE
public class MyCustomDefinedClass {}
#else
public class MyNonCustomDefinedClass {}
#endif
";
var applicationEnvironment = PlatformServices.Default.Application;
var libraryExporter = CompilationServices.Default.LibraryExporter;
var mvcRazorHost = new Mock<IMvcRazorHost>();
mvcRazorHost.SetupGet(m => m.MainClassNamePrefix)
.Returns("My");
var options = GetOptions();
options.Value.ParseOptions = options.Value.ParseOptions.WithPreprocessorSymbols("MY_CUSTOM_DEFINE");
var compilationService = new RoslynCompilationService(
applicationEnvironment,
libraryExporter,
mvcRazorHost.Object,
options,
GetFileProviderAccessor(),
NullLoggerFactory.Instance);
var relativeFileInfo = new RelativeFileInfo(
new TestFileInfo { PhysicalPath = "SomePath" },
"some-relative-path");
// Act
var result = compilationService.Compile(relativeFileInfo, content);
// Assert
Assert.NotNull(result.CompiledType);
Assert.Equal("MyCustomDefinedClass", result.CompiledType.Name);
}
private GetOrAddResult GetOrAddCore(string relativePath,
Func<RelativeFileInfo, CompilationResult> compile)
{
var normalizedPath = NormalizePath(relativePath);
var cacheEntry = _cache.Get<CompilerCacheEntry>(normalizedPath);
if (cacheEntry == null)
{
var fileInfo = _fileProvider.GetFileInfo(relativePath);
if (!fileInfo.Exists)
{
return null;
}
var relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
return OnCacheMiss(relativeFileInfo, normalizedPath, compile);
}
else if (cacheEntry.IsPreCompiled && !cacheEntry.IsValidatedPreCompiled)
{
// For precompiled views, the first time the entry is read, we need to ensure that no changes were made
// either to the file associated with this entry, or any _ViewImports associated with it between the time
// the View was precompiled and the time EnsureInitialized was called. For later iterations, we can
// rely on expiration triggers ensuring the validity of the entry.
var fileInfo = _fileProvider.GetFileInfo(relativePath);
if (!fileInfo.Exists)
{
return null;
}
var relativeFileInfo = new RelativeFileInfo(fileInfo, relativePath);
if (cacheEntry.Length != fileInfo.Length)
{
// Recompile if the file lengths differ
return OnCacheMiss(relativeFileInfo, normalizedPath, compile);
}
if (AssociatedGlobalFilesChanged(cacheEntry, compile))
{
// Recompile if _ViewImports have changed since the entry was created.
return OnCacheMiss(relativeFileInfo, normalizedPath, compile);
}
if (cacheEntry.LastModified == fileInfo.LastModified)
{
// Assigning to IsValidatedPreCompiled is an atomic operation and will result in a safe race
// if it is being concurrently updated and read.
cacheEntry.IsValidatedPreCompiled = true;
return new GetOrAddResult
{
CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType),
CompilerCacheEntry = cacheEntry
};
}
// Timestamp doesn't match but it might be because of deployment, compare the hash.
if (cacheEntry.IsPreCompiled &&
string.Equals(cacheEntry.Hash,
RazorFileHash.GetHash(fileInfo, cacheEntry.HashAlgorithmVersion),
StringComparison.Ordinal))
{
// Cache hit, but we need to update the entry.
// Assigning to LastModified and IsValidatedPreCompiled are atomic operations and will result in safe race
// if the entry is being concurrently read or updated.
cacheEntry.LastModified = fileInfo.LastModified;
cacheEntry.IsValidatedPreCompiled = true;
return new GetOrAddResult
{
CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType),
CompilerCacheEntry = cacheEntry
};
}
// it's not a match, recompile
return OnCacheMiss(relativeFileInfo, normalizedPath, compile);
}
return new GetOrAddResult
{
CompilationResult = CompilationResult.Successful(cacheEntry.CompiledType),
CompilerCacheEntry = cacheEntry
};
}
public void GetCompilationFailedResult_ReturnsCompilationResult_WithGroupedMessages()
{
// Arrange
var viewPath = @"views/index.razor";
var viewImportsPath = @"views/global.import.cshtml";
var host = Mock.Of<IMvcRazorHost>();
var fileProvider = new TestFileProvider();
var file = fileProvider.AddFile(viewPath, "View Content");
fileProvider.AddFile(viewImportsPath, "Global Import Content");
var relativeFileInfo = new RelativeFileInfo(file, viewPath);
var razorService = new RazorCompilationService(
Mock.Of<ICompilationService>(),
Mock.Of<IMvcRazorHost>(),
GetOptions(fileProvider));
var errors = new[]
{
new RazorError("message-1", new SourceLocation(1, 2, 17)),
new RazorError("message-2", new SourceLocation(viewPath, 1, 4, 6), 7),
new RazorError { Message = "message-3" },
new RazorError("message-4", new SourceLocation(viewImportsPath, 1, 3, 8), 4),
};
// Act
var result = razorService.GetCompilationFailedResult(relativeFileInfo, errors);
// Assert
Assert.NotNull(result.CompilationFailures);
Assert.Collection(result.CompilationFailures,
failure =>
{
Assert.Equal(viewPath, failure.SourceFilePath);
Assert.Equal("View Content", failure.SourceFileContent);
Assert.Collection(failure.Messages,
message =>
{
Assert.Equal(errors[0].Message, message.Message);
Assert.Equal(viewPath, message.SourceFilePath);
Assert.Equal(3, message.StartLine);
Assert.Equal(17, message.StartColumn);
Assert.Equal(3, message.EndLine);
Assert.Equal(18, message.EndColumn);
},
message =>
{
Assert.Equal(errors[1].Message, message.Message);
Assert.Equal(viewPath, message.SourceFilePath);
Assert.Equal(5, message.StartLine);
Assert.Equal(6, message.StartColumn);
Assert.Equal(5, message.EndLine);
Assert.Equal(13, message.EndColumn);
},
message =>
{
Assert.Equal(errors[2].Message, message.Message);
Assert.Equal(viewPath, message.SourceFilePath);
Assert.Equal(0, message.StartLine);
Assert.Equal(-1, message.StartColumn);
Assert.Equal(0, message.EndLine);
Assert.Equal(0, message.EndColumn);
});
},
failure =>
{
Assert.Equal(viewImportsPath, failure.SourceFilePath);
Assert.Equal("Global Import Content", failure.SourceFileContent);
Assert.Collection(failure.Messages,
message =>
{
Assert.Equal(errors[3].Message, message.Message);
Assert.Equal(viewImportsPath, message.SourceFilePath);
Assert.Equal(4, message.StartLine);
Assert.Equal(8, message.StartColumn);
Assert.Equal(4, message.EndLine);
Assert.Equal(12, message.EndColumn);
});
});
}
public void Compile_ReturnsResultFromCompilationServiceIfParseSucceeds()
{
// Arrange
var code = "compiled-content";
var generatorResult = new GeneratorResults(
new Block(new BlockBuilder { Type = BlockType.Comment }),
Enumerable.Empty<TagHelperDescriptor>(),
new ErrorSink(),
new CodeGeneratorResult(code, new LineMapping[0]),
new ChunkTree());
var host = new Mock<IMvcRazorHost>();
host.Setup(h => h.GenerateCode(It.IsAny<string>(), It.IsAny<Stream>()))
.Returns(generatorResult);
var fileInfo = new Mock<IFileInfo>();
fileInfo.Setup(f => f.CreateReadStream())
.Returns(Stream.Null);
var relativeFileInfo = new RelativeFileInfo(fileInfo.Object, @"Views\index\home.cshtml");
var compilationResult = CompilationResult.Successful(typeof(object));
var compiler = new Mock<ICompilationService>();
compiler.Setup(c => c.Compile(relativeFileInfo, code))
.Returns(compilationResult)
.Verifiable();
var razorService = new RazorCompilationService(compiler.Object, host.Object, GetOptions());
// Act
var result = razorService.Compile(relativeFileInfo);
// Assert
Assert.Same(compilationResult, result);
compiler.Verify();
}