54 lines
2.4 KiB
C#
54 lines
2.4 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Collections.Immutable;
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using System.Linq;
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using MapTo.Tests.Extensions;
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.CSharp;
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using Xunit;
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namespace MapTo.Tests.Infrastructure
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{
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internal static class CSharpGenerator
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{
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internal static (Compilation compilation, ImmutableArray<Diagnostic> diagnostics) GetOutputCompilation(string source, bool assertCompilation = false, IDictionary<string, string> analyzerConfigOptions = null)
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{
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var syntaxTree = CSharpSyntaxTree.ParseText(source);
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var references = AppDomain.CurrentDomain.GetAssemblies()
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.Where(a => !a.IsDynamic && !string.IsNullOrWhiteSpace(a.Location))
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.Select(a => MetadataReference.CreateFromFile(a.Location))
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.ToList();
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var compilation = CSharpCompilation.Create($"{typeof(CSharpGenerator).Assembly.GetName().Name}.Dynamic", new[] { syntaxTree }, references, new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));
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if (assertCompilation)
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{
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// NB: fail tests when the injected program isn't valid _before_ running generators
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compilation.GetDiagnostics().ShouldBeSuccessful();
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}
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var driver = CSharpGeneratorDriver.Create(
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new[] { new MapToGenerator() },
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optionsProvider: new TestAnalyzerConfigOptionsProvider(analyzerConfigOptions)
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);
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driver.RunGeneratorsAndUpdateCompilation(compilation, out var outputCompilation, out var generateDiagnostics);
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var diagnostics = outputCompilation.GetDiagnostics()
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.Where(d => d.Severity >= DiagnosticSeverity.Warning)
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.Select(c => $"{c.Severity}: {c.Location.GetLineSpan().StartLinePosition} - {c.GetMessage()} [in \"{c.Location.SourceTree?.FilePath}\"]").ToArray();
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if (diagnostics.Any())
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{
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Assert.False(diagnostics.Any(), $@"Failed:
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{string.Join(Environment.NewLine, diagnostics.Select(c => $"- {c}"))}
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Generated Sources:
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{string.Join(Environment.NewLine, outputCompilation.SyntaxTrees.Reverse().Select(s => $"----------------------------------------{Environment.NewLine}File Path: \"{s.FilePath}\"{Environment.NewLine}{s}"))}
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");
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}
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return (outputCompilation, generateDiagnostics);
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}
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}
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} |