/// <summary>
/// Verifies that <paramref name="diagnosticsAndSources"/> produces the expected diagnostics.
/// </summary>
/// <param name="analyzer">The <see cref="DiagnosticAnalyzer"/> to check <paramref name="diagnosticsAndSources"/> with.</param>
/// <param name="diagnosticsAndSources">The code to analyze with <paramref name="analyzer"/>. Indicate error position with ↓ (alt + 25).</param>
/// <param name="allowCompilationErrors">Specify if compilation errors are accepted in the fixed code. This can be for example syntax errors. Default value is <see cref="AllowCompilationErrors.No"/>.</param>
/// <param name="suppressWarnings">A collection of <see cref="DiagnosticDescriptor.Id"/> to suppress when analyzing the code. Default is <see langword="null" /> meaning <see cref="SuppressedDiagnostics"/> are used.</param>
/// <param name="metadataReferences">A collection of <see cref="MetadataReference"/> to use when compiling. Default is <see langword="null" /> meaning <see cref="MetadataReferences"/> are used.</param>
/// <param name="compilationOptions">The <see cref="CSharpCompilationOptions"/>.</param>
public static void Diagnostics(
DiagnosticAnalyzer analyzer,
DiagnosticsAndSources diagnosticsAndSources,
AllowCompilationErrors allowCompilationErrors = AllowCompilationErrors.No,
IEnumerable <string>?suppressWarnings = null,
IEnumerable <MetadataReference>?metadataReferences = null,
CSharpCompilationOptions?compilationOptions = null)
{
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
var sln = CodeFactory.CreateSolution(
diagnosticsAndSources,
analyzer,
compilationOptions,
#pragma warning disable CS0618 // Suppress until removed. Will be replaced with Metadatareferences.FromAttributes()
suppressWarnings ?? SuppressedDiagnostics,
metadataReferences ?? MetadataReferences);
#pragma warning restore CS0618 // Suppress until removed. Will be replaced with Metadatareferences.FromAttributes()
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics, sln);
if (allowCompilationErrors == AllowCompilationErrors.No)
{
NoCompilerErrors(sln);
}
}
/// <summary>
/// Verifies that <paramref name="code"/> produces no diagnostics when analyzed with <paramref name="analyzer"/>.
/// </summary>
/// <param name="analyzer">The analyzer.</param>
/// <param name="code">
/// The code to create the solution from.
/// Can be a .cs, .csproj or .sln file.
/// </param>
public static void NoAnalyzerDiagnostics(DiagnosticAnalyzer analyzer, FileInfo code)
{
var sln = CodeFactory.CreateSolution(code, CodeFactory.DefaultCompilationOptions(analyzer, SuppressedDiagnostics), MetadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
NoDiagnostics(diagnostics);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="fix"/> supports fixing diagnostics reported by <paramref name="analyzer"/>.
/// 2. <paramref name="diagnosticsAndSources"/> produces diagnostics fixable by <paramref name="fix"/>.
/// 3. Applying <paramref name="fix"/> results in <paramref name="after"/>.
/// </summary>
/// <param name="analyzer">The <see cref="DiagnosticAnalyzer"/> to check <paramref name="diagnosticsAndSources"/> with.</param>
/// <param name="fix">The <see cref="CodeFixProvider"/> to apply on the <see cref="Diagnostic"/> reported.</param>
/// <param name="diagnosticsAndSources">The code to analyze with <paramref name="analyzer"/>. Indicate error position with ↓ (alt + 25).</param>
/// <param name="after">The expected code produced by applying <paramref name="fix"/>.</param>
/// <param name="fixTitle">The expected title of the fix. Must be provided if more than one code action is registered.</param>
/// <param name="allowCompilationErrors">Specify if compilation errors are accepted in the fixed code. This can be for example syntax errors. Default value is <see cref="AllowCompilationErrors.No"/>.</param>
/// <param name="suppressWarnings">A collection of <see cref="DiagnosticDescriptor.Id"/> to suppress when analyzing the code. Default is <see langword="null" /> meaning <see cref="SuppressedDiagnostics"/> are used.</param>
/// <param name="metadataReferences">A collection of <see cref="MetadataReference"/> to use when compiling. Default is <see langword="null" /> meaning <see cref="MetadataReferences"/> are used.</param>
/// <param name="compilationOptions">The <see cref="CSharpCompilationOptions"/>.</param>
public static void CodeFix(
DiagnosticAnalyzer analyzer,
CodeFixProvider fix,
DiagnosticsAndSources diagnosticsAndSources,
IReadOnlyList <string> after,
string?fixTitle = null,
AllowCompilationErrors allowCompilationErrors = AllowCompilationErrors.No,
IEnumerable <string>?suppressWarnings = null,
IEnumerable <MetadataReference>?metadataReferences = null,
CSharpCompilationOptions?compilationOptions = null)
{
VerifyCodeFixSupportsAnalyzer(analyzer, fix);
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
var sln = CodeFactory.CreateSolution(
diagnosticsAndSources: diagnosticsAndSources,
analyzer: analyzer,
compilationOptions: compilationOptions,
#pragma warning disable CS0618 // Suppress until removed. Will be replaced with Metadatareferences.FromAttributes()
suppressWarnings ?? SuppressedDiagnostics,
metadataReferences ?? MetadataReferences);
#pragma warning restore CS0618 // Suppress until removed. Will be replaced with Metadatareferences.FromAttributes()
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics, sln);
VerifyFix(sln, diagnostics, analyzer, fix, after, fixTitle, allowCompilationErrors);
}
/// <summary>
/// Verifies that <paramref name="code"/> produces no diagnostics when analyzed with <paramref name="analyzer"/>.
/// </summary>
/// <param name="analyzer">The analyzer.</param>
/// <param name="code">The code to analyze.</param>
/// <param name="compilationOptions">The <see cref="CSharpCompilationOptions"/> to use.</param>
/// <param name="metadataReferences">The metadata references to use when compiling.</param>
public static void NoAnalyzerDiagnostics(DiagnosticAnalyzer analyzer, IReadOnlyList <string> code, CSharpCompilationOptions compilationOptions, IEnumerable <MetadataReference> metadataReferences)
{
var sln = CodeFactory.CreateSolution(code, compilationOptions, metadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
NoDiagnostics(diagnostics);
}
/// <summary>
/// Verifies that <paramref name="code"/> produces no diagnostics when analyzed with <paramref name="analyzer"/>.
/// </summary>
/// <param name="analyzer">The <see cref="DiagnosticAnalyzer"/> to check <paramref name="code"/> with.</param>
/// <param name="code">
/// The code to create the solution from.
/// Can be a .cs, .csproj or .sln file.
/// </param>
public static void NoAnalyzerDiagnostics(DiagnosticAnalyzer analyzer, FileInfo code)
{
#pragma warning disable CS0618 // Suppress until removed. Will be replaced with Metadatareferences.FromAttributes()
var sln = CodeFactory.CreateSolution(code, CodeFactory.DefaultCompilationOptions(analyzer, SuppressedDiagnostics), MetadataReferences);
#pragma warning restore CS0618 // Suppress until removed. Will be replaced with Metadatareferences.FromAttributes()
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
NoDiagnostics(diagnostics);
}
/// <summary>
/// Verifies that <paramref name="code"/> produces no diagnostics when analyzed with <paramref name="analyzer"/>.
/// </summary>
/// <param name="analyzer">The analyzer.</param>
/// <param name="descriptor">The expected diagnostic.</param>
/// <param name="code">The code to analyze.</param>
public static void NoAnalyzerDiagnostics(DiagnosticAnalyzer analyzer, DiagnosticDescriptor descriptor, IReadOnlyList <string> code)
{
VerifyAnalyzerSupportsDiagnostic(analyzer, descriptor);
var sln = CodeFactory.CreateSolution(code, CodeFactory.DefaultCompilationOptions(analyzer, descriptor, SuppressedDiagnostics), MetadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
NoDiagnostics(diagnostics);
}
/// <summary>
/// Verifies that <paramref name="diagnosticsAndSources"/> produces the expected diagnostics.
/// </summary>
/// <param name="analyzer">The analyzer to apply.</param>
/// <param name="diagnosticsAndSources">The code to analyze.</param>
public static void Diagnostics(DiagnosticAnalyzer analyzer, DiagnosticsAndSources diagnosticsAndSources)
{
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
var sln = CodeFactory.CreateSolution(diagnosticsAndSources, analyzer, SuppressedDiagnostics, MetadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
}
/// <summary>
/// Verifies that <paramref name="code"/> produces no diagnostics when analyzed with <paramref name="analyzer"/>.
/// </summary>
/// <param name="analyzer">The <see cref="DiagnosticAnalyzer"/> to check <paramref name="code"/> with.</param>
/// <param name="descriptor">The <see cref="ExpectedDiagnostic"/> with information about the expected <see cref="Diagnostic"/>. If <paramref name="analyzer"/> supports more than one <see cref="DiagnosticDescriptor.Id"/> this must be provided.</param>
/// <param name="code">The code to analyze using <paramref name="analyzer"/>. Analyzing the code is expected to produce no errors or warnings.</param>
public static void NoAnalyzerDiagnostics(DiagnosticAnalyzer analyzer, DiagnosticDescriptor descriptor, IReadOnlyList <string> code)
{
VerifyAnalyzerSupportsDiagnostic(analyzer, descriptor);
#pragma warning disable CS0618 // Suppress until removed. Will be replaced with Metadatareferences.FromAttributes()
var sln = CodeFactory.CreateSolution(code, CodeFactory.DefaultCompilationOptions(analyzer, descriptor, SuppressedDiagnostics), MetadataReferences);
#pragma warning restore CS0618 // Suppress until removed. Will be replaced with Metadatareferences.FromAttributes()
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
NoDiagnostics(diagnostics);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="diagnosticsAndSources"/> produces the expected diagnostics
/// 2. The code fix does not change the code.
/// </summary>
/// <param name="analyzer">The type of the analyzer.</param>
/// <param name="codeFix">The type of the code fix.</param>
/// <param name="diagnosticsAndSources">The code to analyze.</param>
/// <param name="suppressedDiagnostics">Ids of diagnostics to suppress.</param>
/// <param name="metadataReferences">Collection of <see cref="MetadataReference"/> to use when compiling.</param>
public static void NoFix(DiagnosticAnalyzer analyzer, CodeFixProvider codeFix, DiagnosticsAndSources diagnosticsAndSources, IEnumerable <string> suppressedDiagnostics, IEnumerable <MetadataReference> metadataReferences)
{
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
VerifyCodeFixSupportsAnalyzer(analyzer, codeFix);
var sln = CodeFactory.CreateSolution(diagnosticsAndSources, analyzer, suppressedDiagnostics, metadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
VerifyNoFix(sln, diagnostics, codeFix);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="solution"/> produces the expected diagnostics
/// 2. The code fix fixes the code.
/// </summary>
/// <param name="analyzer">The analyzer to run on the code..</param>
/// <param name="fix">The code fix to apply.</param>
/// <param name="expectedDiagnostic">The expected diagnostic.</param>
/// <param name="solution">The code with error positions indicated.</param>
/// <param name="fixedCode">The expected code produced by the code fix.</param>
/// <param name="fixTitle">The title of the fix to apply if more than one.</param>
/// <param name="allowCompilationErrors">If compilation errors are accepted in the fixed code.</param>
public static void CodeFix(DiagnosticAnalyzer analyzer, CodeFixProvider fix, ExpectedDiagnostic expectedDiagnostic, Solution solution, string fixedCode, string fixTitle = null, AllowCompilationErrors allowCompilationErrors = AllowCompilationErrors.No)
{
VerifyAnalyzerSupportsDiagnostic(analyzer, expectedDiagnostic);
VerifyCodeFixSupportsAnalyzer(analyzer, fix);
var diagnostics = Analyze.GetDiagnostics(analyzer, solution);
var diagnosticsAndSources = DiagnosticsAndSources.Create(expectedDiagnostic, solution.Projects.SelectMany(x => x.Documents).Select(x => CodeReader.GetCode(x, null)).ToArray());
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
VerifyFix(solution, diagnostics, analyzer, fix, fixedCode, fixTitle, allowCompilationErrors);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="diagnosticsAndSources"/> produces the expected diagnostics
/// 2. The code fix fixes the code.
/// </summary>
/// <param name="analyzer">The analyzer to run on the code..</param>
/// <param name="fix">The <see cref="CodeFixProvider"/> to apply.</param>
/// <param name="diagnosticsAndSources">The code to analyze.</param>
/// <param name="fixedCode">The expected code produced by the code fix.</param>
/// <param name="suppressedDiagnostics">Ids of diagnostics to suppress.</param>
/// <param name="metadataReferences">Collection of <see cref="MetadataReference"/> to use when compiling.</param>
/// <param name="fixTitle">The title of the fix to apply if more than one.</param>
/// <param name="allowCompilationErrors">If compilation errors are accepted in the fixed code.</param>
public static void CodeFix(DiagnosticAnalyzer analyzer, CodeFixProvider fix, DiagnosticsAndSources diagnosticsAndSources, string fixedCode, IEnumerable <string> suppressedDiagnostics, IEnumerable <MetadataReference> metadataReferences, string fixTitle = null, AllowCompilationErrors allowCompilationErrors = AllowCompilationErrors.No)
{
VerifyCodeFixSupportsAnalyzer(analyzer, fix);
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
var sln = CodeFactory.CreateSolution(diagnosticsAndSources, analyzer, suppressedDiagnostics, metadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
VerifyFix(sln, diagnostics, analyzer, fix, fixedCode, fixTitle, allowCompilationErrors);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="codeWithErrorsIndicated"/> produces the expected diagnostics
/// 2. The code fix fixes the code.
/// </summary>
/// <param name="analyzer">The analyzer to run on the code..</param>
/// <param name="codeFix">The code fix to apply.</param>
/// <param name="codeWithErrorsIndicated">The code with error positions indicated.</param>
/// <param name="fixedCode">The expected code produced by the code fix.</param>
/// <param name="fixTitle">The title of the fix to apply if more than one.</param>
/// <param name="suppressedDiagnostics">The diagnostics to suppress when compiling.</param>
/// <param name="metadataReferences">The meta data metadataReferences to add to the compilation.</param>
/// <param name="allowCompilationErrors">If compilation errors are accepted in the fixed code.</param>
/// <param name="scope">The scope to apply fixes for.</param>
public static void FixAllByScope(DiagnosticAnalyzer analyzer, CodeFixProvider codeFix, IReadOnlyList <string> codeWithErrorsIndicated, IReadOnlyList <string> fixedCode, string fixTitle, IEnumerable <string> suppressedDiagnostics, IEnumerable <MetadataReference> metadataReferences, AllowCompilationErrors allowCompilationErrors, FixAllScope scope)
{
var diagnosticsAndSources = DiagnosticsAndSources.CreateFromCodeWithErrorsIndicated(analyzer, codeWithErrorsIndicated);
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
VerifyCodeFixSupportsAnalyzer(analyzer, codeFix);
var sln = CodeFactory.CreateSolution(diagnosticsAndSources, analyzer, suppressedDiagnostics, metadataReferences);
var diagnostics = Analyze.GetDiagnostics(sln, analyzer);
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
FixAllByScope(analyzer, codeFix, sln, fixedCode, fixTitle, allowCompilationErrors, scope);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="codeWithErrorsIndicated"/> produces the expected diagnostics
/// 2. The code fix does not change the code.
/// </summary>
/// <param name="codeFix">The type of the code fix.</param>
/// <param name="codeWithErrorsIndicated">The code to analyze.</param>
/// <param name="compilationOptions">The <see cref="CSharpCompilationOptions"/> to use.</param>
/// <param name="metadataReferences">The meta data references to use when compiling.</param>
public static void NoFix(CodeFixProvider codeFix, IReadOnlyList <string> codeWithErrorsIndicated, CSharpCompilationOptions compilationOptions, IEnumerable <MetadataReference> metadataReferences)
{
var diagnosticsAndSources = DiagnosticsAndSources.CreateFromCodeWithErrorsIndicated(new PlaceholderAnalyzer("None"), codeWithErrorsIndicated);
var sln = CodeFactory.CreateSolution(diagnosticsAndSources.Code, compilationOptions, metadataReferences);
var diagnostics = Analyze.GetDiagnostics(sln);
if (diagnostics.SelectMany(x => x).All(d => !codeFix.FixableDiagnosticIds.Contains(d.Id)))
{
throw new InvalidOperationException("Analyzing the code did not produce any diagnostics fixable by the code fix.");
}
VerifyNoFix(sln, diagnostics, codeFix);
}
/// <summary>
/// Verifies that <paramref name="codeWithErrorsIndicated"/> produces the expected diagnostics.
/// </summary>
/// <param name="analyzer">The analyzer to apply.</param>
/// <param name="codeWithErrorsIndicated">The code with error positions indicated.</param>
/// <param name="compilationOptions">The <see cref="CSharpCompilationOptions"/> to use.</param>
/// <param name="metadataReferences">The meta data metadataReferences to use when compiling.</param>
public static void Diagnostics(DiagnosticAnalyzer analyzer, IReadOnlyList <string> codeWithErrorsIndicated, CSharpCompilationOptions compilationOptions = null, IEnumerable <MetadataReference> metadataReferences = null)
{
var diagnosticsAndSources = DiagnosticsAndSources.CreateFromCodeWithErrorsIndicated(analyzer, codeWithErrorsIndicated);
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
var sln = CodeFactory.CreateSolution(
diagnosticsAndSources.Code,
compilationOptions ?? CodeFactory.DefaultCompilationOptions(analyzer, SuppressedDiagnostics),
metadataReferences ?? MetadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="codeWithErrorsIndicated"/> produces the expected diagnostics
/// 2. The code fix fixes the code.
/// </summary>
/// <param name="analyzer">The analyzer to run on the code..</param>
/// <param name="fix">The <see cref="CodeFixProvider"/> to apply.</param>
/// <param name="codeWithErrorsIndicated">The code to analyze.</param>
/// <param name="fixedCode">The expected code produced by the code fix.</param>
/// <param name="compilationOptions">The compilation options.</param>
/// <param name="metadataReferences">Collection of <see cref="MetadataReference"/> to use when compiling.</param>
/// <param name="fixTitle">The title of the fix to apply if more than one.</param>
/// <param name="allowCompilationErrors">If compilation errors are accepted in the fixed code.</param>
public static void CodeFix(DiagnosticAnalyzer analyzer, CodeFixProvider fix, IReadOnlyList <string> codeWithErrorsIndicated, string fixedCode, CSharpCompilationOptions compilationOptions = null, IEnumerable <MetadataReference> metadataReferences = null, string fixTitle = null, AllowCompilationErrors allowCompilationErrors = AllowCompilationErrors.No)
{
VerifyCodeFixSupportsAnalyzer(analyzer, fix);
var diagnosticsAndSources = DiagnosticsAndSources.CreateFromCodeWithErrorsIndicated(analyzer, codeWithErrorsIndicated);
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
var sln = CodeFactory.CreateSolution(
diagnosticsAndSources.Code,
compilationOptions ?? CodeFactory.DefaultCompilationOptions(analyzer, SuppressedDiagnostics),
metadataReferences ?? MetadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
VerifyFix(sln, diagnostics, analyzer, fix, fixedCode, fixTitle, allowCompilationErrors);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="codeWithErrorsIndicated"/> produces the expected diagnostics
/// 2. The code fix fixes the code.
/// </summary>
/// <typeparam name="TAnalyzer">The type of the analyzer.</typeparam>
/// <typeparam name="TCodeFix">The type of the code fix.</typeparam>
/// <param name="codeWithErrorsIndicated">The code with error positions indicated.</param>
/// <param name="fixedCode">The expected code produced by the code fix.</param>
/// <param name="fixTitle">The title of the fix to apply if more than one.</param>
/// <param name="allowCompilationErrors">If compilation errors are accepted in the fixed code.</param>
public static void FixAllOneByOne <TAnalyzer, TCodeFix>(string codeWithErrorsIndicated, string fixedCode, string fixTitle = null, AllowCompilationErrors allowCompilationErrors = AllowCompilationErrors.No)
where TAnalyzer : DiagnosticAnalyzer, new()
where TCodeFix : CodeFixProvider, new()
{
var analyzer = new TAnalyzer();
var diagnosticsAndSources = DiagnosticsAndSources.CreateFromCodeWithErrorsIndicated(analyzer, codeWithErrorsIndicated);
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
var codeFix = new TCodeFix();
VerifyCodeFixSupportsAnalyzer(analyzer, codeFix);
var sln = CodeFactory.CreateSolution(diagnosticsAndSources, analyzer, SuppressedDiagnostics, MetadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
FixAllOneByOne(analyzer, codeFix, sln, new[] { fixedCode }, fixTitle, allowCompilationErrors);
}
/// <summary>
/// Verifies that
/// 1. <paramref name="diagnosticsAndSources"/> produces the expected diagnostics
/// 2. The code fix fixes the code.
/// </summary>
/// <param name="analyzer">The analyzer to run on the code..</param>
/// <param name="codeFix">The code fix to apply.</param>
/// <param name="diagnosticsAndSources">The code and expected diagnostics.</param>
/// <param name="fixedCode">The expected code produced by the code fix.</param>
/// <param name="suppressedDiagnostics">The diagnostics to suppress when compiling.</param>
/// <param name="metadataReferences">The meta data metadataReferences to add to the compilation.</param>
/// <param name="fixTitle">The title of the fix to apply if more than one.</param>
/// <param name="allowCompilationErrors">If compilation errors are accepted in the fixed code.</param>
public static void FixAll(DiagnosticAnalyzer analyzer, CodeFixProvider codeFix, DiagnosticsAndSources diagnosticsAndSources, IReadOnlyList <string> fixedCode, IEnumerable <string> suppressedDiagnostics, IEnumerable <MetadataReference> metadataReferences, string fixTitle, AllowCompilationErrors allowCompilationErrors)
{
VerifyAnalyzerSupportsDiagnostics(analyzer, diagnosticsAndSources.ExpectedDiagnostics);
VerifyCodeFixSupportsAnalyzer(analyzer, codeFix);
var sln = CodeFactory.CreateSolution(diagnosticsAndSources, analyzer, suppressedDiagnostics, metadataReferences);
var diagnostics = Analyze.GetDiagnostics(analyzer, sln);
VerifyDiagnostics(diagnosticsAndSources, diagnostics);
FixAllOneByOne(analyzer, codeFix, sln, fixedCode, fixTitle, allowCompilationErrors);
var fixAllProvider = codeFix.GetFixAllProvider();
if (fixAllProvider != null)
{
foreach (var scope in fixAllProvider.GetSupportedFixAllScopes())
{
FixAllByScope(analyzer, codeFix, sln, fixedCode, fixTitle, allowCompilationErrors, scope);
}
}
}
/// <summary>
/// Check the solution for compiler errors and warnings.
/// </summary>
public static void NoCompilerErrors(Solution solution, IReadOnlyList <string> allowedIds, AllowedDiagnostics allowedDiagnostics)
{
var diagnostics = Analyze.GetDiagnostics(solution);
NoCompilerErrors(diagnostics, allowedIds, allowedDiagnostics);
}
private static void VerifyDiagnostics(DiagnosticsAndSources diagnosticsAndSources, IReadOnlyList <ImmutableArray <Diagnostic> > diagnostics, Solution solution, string?expectedMessage = null)
{
if (diagnosticsAndSources.ExpectedDiagnostics.Count == 0)
{
throw new AssertException("Expected code to have at least one error position indicated with '↓'");
}
var allDiagnostics = diagnostics.SelectMany(x => x).ToArray();
if (allDiagnostics.Length == 0)
{
allDiagnostics = Analyze.GetDiagnostics(solution).SelectMany(x => x).ToArray();
}
if (Equals())
{
if (expectedMessage != null)
{
foreach (var actual in allDiagnostics)
{
var actualMessage = actual.GetMessage(CultureInfo.InvariantCulture);
TextAssert.AreEqual(expectedMessage, actualMessage, $"Expected and actual diagnostic message for the diagnostic {actual} does not match");
}
}
return;
}
var error = StringBuilderPool.Borrow();
if (allDiagnostics.Length == 1 &&
diagnosticsAndSources.ExpectedDiagnostics.Count == 1 &&
diagnosticsAndSources.ExpectedDiagnostics[0].Id == allDiagnostics[0].Id)
{
if (diagnosticsAndSources.ExpectedDiagnostics[0].PositionMatches(allDiagnostics[0]) &&
!diagnosticsAndSources.ExpectedDiagnostics[0].MessageMatches(allDiagnostics[0]))
{
CodeAssert.AreEqual(diagnosticsAndSources.ExpectedDiagnostics[0].Message !, allDiagnostics[0].GetMessage(CultureInfo.InvariantCulture), "Expected and actual messages do not match.");
}
}
error.AppendLine("Expected and actual diagnostics do not match.")
.AppendLine("Expected:");
foreach (var expected in diagnosticsAndSources.ExpectedDiagnostics.OrderBy(x => x.Span.StartLinePosition))
{
error.AppendLine(expected.ToString(diagnosticsAndSources.Code, " "));
}
if (allDiagnostics.Length == 0)
{
error.AppendLine("Actual: <no diagnostics>");
}
else
{
error.AppendLine("Actual:");
foreach (var diagnostic in allDiagnostics.OrderBy(x => x.Location.SourceSpan.Start))
{
error.AppendLine(diagnostic.ToErrorString(" "));
}
}
throw new AssertException(error.Return());
bool Equals()
{
foreach (var diagnostic in allDiagnostics)
{
if (diagnosticsAndSources.ExpectedDiagnostics.Any(e => e.Matches(diagnostic)))
{
continue;
}
return(false);
}
foreach (var expected in diagnosticsAndSources.ExpectedDiagnostics)
{
if (allDiagnostics.Any(a => expected.Matches(a)))
{
continue;
}
return(false);
}
return(true);
}
}
/// <summary>
/// Verifies that <paramref name="solution"/> produces no diagnostics when analyzed with <paramref name="analyzer"/>.
/// </summary>
/// <param name="analyzer">The analyzer.</param>
/// <param name="solution">The <see cref="Solution"/> for which no errors or warnings are expected.</param>
public static void NoAnalyzerDiagnostics(DiagnosticAnalyzer analyzer, Solution solution)
{
var diagnostics = Analyze.GetDiagnostics(analyzer, solution);
NoDiagnostics(diagnostics);
}