void RunInternal(string dir, string fileToRoundtrip, Action <string> testAction)
{
if (!Directory.Exists(TestDir))
{
Assert.Ignore($"Assembly-roundtrip test ignored: test directory '{TestDir}' needs to be checked out separately." + Environment.NewLine +
$"git clone https://github.com/icsharpcode/ILSpy-tests \"{TestDir}\"");
}
string inputDir = Path.Combine(TestDir, dir);
string decompiledDir = inputDir + "-decompiled";
string outputDir = inputDir + "-output";
if (inputDir.EndsWith("TestCases"))
{
// make sure output dir names are unique so that we don't get trouble due to parallel test execution
decompiledDir += Path.GetFileNameWithoutExtension(fileToRoundtrip);
outputDir += Path.GetFileNameWithoutExtension(fileToRoundtrip);
}
ClearDirectory(decompiledDir);
ClearDirectory(outputDir);
string projectFile = null;
foreach (string file in Directory.EnumerateFiles(inputDir, "*", SearchOption.AllDirectories))
{
if (!file.StartsWith(inputDir + Path.DirectorySeparatorChar, StringComparison.OrdinalIgnoreCase))
{
Assert.Fail($"Unexpected file name: {file}");
}
string relFile = file.Substring(inputDir.Length + 1);
Directory.CreateDirectory(Path.Combine(outputDir, Path.GetDirectoryName(relFile)));
if (relFile.Equals(fileToRoundtrip, StringComparison.OrdinalIgnoreCase))
{
Console.WriteLine($"Decompiling {fileToRoundtrip}...");
Stopwatch w = Stopwatch.StartNew();
using (var fileStream = new FileStream(file, FileMode.Open, FileAccess.Read)) {
PEFile module = new PEFile(file, fileStream, PEStreamOptions.PrefetchEntireImage);
var resolver = new UniversalAssemblyResolver(file, false, module.Reader.DetectTargetFrameworkId(), PEStreamOptions.PrefetchMetadata);
resolver.AddSearchDirectory(inputDir);
resolver.RemoveSearchDirectory(".");
var decompiler = new TestProjectDecompiler(inputDir);
decompiler.AssemblyResolver = resolver;
// Let's limit the roundtrip tests to C# 7.3 for now; because 8.0 is still in preview
// and the generated project doesn't build as-is.
decompiler.Settings = new DecompilerSettings(LanguageVersion.CSharp7_3);
// use a fixed GUID so that we can diff the output between different ILSpy runs without spurious changes
decompiler.ProjectGuid = Guid.Parse("{127C83E4-4587-4CF9-ADCA-799875F3DFE6}");
decompiler.DecompileProject(module, decompiledDir);
Console.WriteLine($"Decompiled {fileToRoundtrip} in {w.Elapsed.TotalSeconds:f2}");
projectFile = Path.Combine(decompiledDir, module.Name + ".csproj");
}
}
else
{
File.Copy(file, Path.Combine(outputDir, relFile));
}
}
Assert.IsNotNull(projectFile, $"Could not find {fileToRoundtrip}");
Compile(projectFile, outputDir);
testAction(outputDir);
}
void RunInternal(string dir, string fileToRoundtrip, Action <string> testAction)
{
if (!Directory.Exists(TestDir))
{
Assert.Ignore($"Assembly-roundtrip test ignored: test directory '{TestDir}' needs to be checked out separately." + Environment.NewLine +
$"git clone https://github.com/icsharpcode/ILSpy-tests \"{TestDir}\"");
}
string inputDir = Path.Combine(TestDir, dir);
string decompiledDir = inputDir + "-decompiled";
string outputDir = inputDir + "-output";
if (inputDir.EndsWith("TestCases"))
{
// make sure output dir names are unique so that we don't get trouble due to parallel test execution
decompiledDir += Path.GetFileNameWithoutExtension(fileToRoundtrip);
outputDir += Path.GetFileNameWithoutExtension(fileToRoundtrip);
}
ClearDirectory(decompiledDir);
ClearDirectory(outputDir);
string projectFile = null;
foreach (string file in Directory.EnumerateFiles(inputDir, "*", SearchOption.AllDirectories))
{
if (!file.StartsWith(inputDir + Path.DirectorySeparatorChar, StringComparison.OrdinalIgnoreCase))
{
Assert.Fail($"Unexpected file name: {file}");
}
string relFile = file.Substring(inputDir.Length + 1);
Directory.CreateDirectory(Path.Combine(outputDir, Path.GetDirectoryName(relFile)));
if (relFile.Equals(fileToRoundtrip, StringComparison.OrdinalIgnoreCase))
{
Console.WriteLine($"Decompiling {fileToRoundtrip}...");
Stopwatch w = Stopwatch.StartNew();
DefaultAssemblyResolver resolver = new DefaultAssemblyResolver();
resolver.AddSearchDirectory(inputDir);
resolver.RemoveSearchDirectory(".");
var module = ModuleDefinition.ReadModule(file, new ReaderParameters {
AssemblyResolver = resolver,
InMemory = true
});
var decompiler = new TestProjectDecompiler(inputDir);
// use a fixed GUID so that we can diff the output between different ILSpy runs without spurious changes
decompiler.ProjectGuid = Guid.Parse("{127C83E4-4587-4CF9-ADCA-799875F3DFE6}");
decompiler.DecompileProject(module, decompiledDir);
Console.WriteLine($"Decompiled {fileToRoundtrip} in {w.Elapsed.TotalSeconds:f2}");
projectFile = Path.Combine(decompiledDir, module.Assembly.Name.Name + ".csproj");
}
else
{
File.Copy(file, Path.Combine(outputDir, relFile));
}
}
Assert.IsNotNull(projectFile, $"Could not find {fileToRoundtrip}");
Compile(projectFile, outputDir);
testAction(outputDir);
}
