docs: mstest support for ThrowsException/Async

Author: Meir017

docs/MsTestAnalyzer.md

@@ -633,7 +633,7 @@ Action action = ThrowException;
 // old assertion:
 Assert.ThrowsException<ArgumentException>(action); /* fail message: Assert.ThrowsException failed. Threw exception InvalidOperationException, but exception ArgumentException was expected. 
 Exception Message: Operation is not valid due to the current state of the object.
-Stack Trace:    at FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs.MsTestAnalyzerTests.<AssertThrowsException_Failure_OldAssertion>g__ThrowException|73_0() in D:\Repos\fluentassertions\fluentassertions.analyzers\src\FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs\MsTestAnalyzerTests.cs:line 883
+Stack Trace:    at FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs.MsTestAnalyzerTests.<AssertThrowsException_Failure_OldAssertion>g__ThrowException|73_0() in /Users/runner/work/fluentassertions.analyzers/src/FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs/MsTestAnalyzerTests.cs:line 883
    at Microsoft.VisualStudio.TestTools.UnitTesting.Assert.ThrowsException[T](Action action, String message, Object[] parameters) */
 
 // new assertion:
@@ -663,7 +663,7 @@ Func<Task> action = ThrowExceptionAsync;
 // old assertion:
 await Assert.ThrowsExceptionAsync<ArgumentException>(action); /* fail message: Assert.ThrowsException failed. Threw exception InvalidOperationException, but exception ArgumentException was expected. 
 Exception Message: Operation is not valid due to the current state of the object.
-Stack Trace:    at FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs.MsTestAnalyzerTests.<AssertThrowsExceptionAsync_Failure_OldAssertion>g__ThrowExceptionAsync|76_0() in D:\Repos\fluentassertions\fluentassertions.analyzers\src\FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs\MsTestAnalyzerTests.cs:line 919
+Stack Trace:    at FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs.MsTestAnalyzerTests.<AssertThrowsExceptionAsync_Failure_OldAssertion>g__ThrowExceptionAsync|76_0() in /Users/runner/work/fluentassertions.analyzers/src/FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs/MsTestAnalyzerTests.cs:line 919
    at Microsoft.VisualStudio.TestTools.UnitTesting.Assert.ThrowsExceptionAsync[T](Func`1 action, String message, Object[] parameters) */
 
 // new assertion:

src/FluentAssertions.Analyzers.FluentAssertionAnalyzerDocsGenerator/DocsGenerator.cs

@@ -129,7 +129,7 @@ public async Task Execute()
                     var bodyLines = testWithFailureNewAssertion.Body.ToFullString().Split(Environment.NewLine)[2..^2];
                     var paddingToRemove = bodyLines[0].IndexOf(bodyLines[0].TrimStart());
 
-                    var oldAssertions = testWithFailureOldAssertions.Select((x, i) => x.Body.Statements.OfType<ExpressionStatementSyntax>().Single(x => x.Span.CompareTo(oldAssertionComment[i].Span) > 0).ToString().TrimStart() + " /* fail message: " + exceptionMessageLinesOldAssertions[i] + " */");
+                    var oldAssertions = testWithFailureOldAssertions.Select((x, i) => x.Body.Statements.OfType<ExpressionStatementSyntax>().Single(x => x.Span.CompareTo(oldAssertionComment[i].Span) > 0).ToString().TrimStart() + " /* fail message: " + FluentAssertionAnalyzerDocsUtils.ReplaceStackTrace(exceptionMessageLinesOldAssertions[i]) + " */");
                     var newAssertion = testWithFailureNewAssertion.Body.Statements.OfType<ExpressionStatementSyntax>().Single(x => x.Span.CompareTo(newAssertionComment.Span) > 0).ToString().TrimStart() + " /* fail message: " + exceptionMessageLinesNewAssertion + " */";
 
                     var arrange = bodyLines.TakeWhile(x => !string.IsNullOrEmpty(x))

src/FluentAssertions.Analyzers.FluentAssertionAnalyzerDocsGenerator/FluentAssertionAnalyzerDocsUtils.cs

@@ -1,4 +1,5 @@
-using System.IO;
+using System;
+using System.IO;
 using System.Threading.Tasks;
 using Microsoft.Build.Locator;
 using Microsoft.CodeAnalysis;
@@ -8,14 +9,30 @@ namespace FluentAssertions.Analyzers.FluentAssertionAnalyzerDocsGenerator;
 
 public static class FluentAssertionAnalyzerDocsUtils
 {
+    private static readonly string _fluentAssertionsAnalyzersDocs = "FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs";
+    private static readonly string _fluentAssertionsAnalyzersDocsDirectory = Path.Combine("..", _fluentAssertionsAnalyzersDocs);
+    private static readonly string _fluentAssertionsAnalyzersProjectPath = Path.Combine(_fluentAssertionsAnalyzersDocsDirectory, _fluentAssertionsAnalyzersDocs + ".csproj");
+    private static readonly char _unixDirectorySeparator = '/';
+
     public static async Task<Compilation> GetFluentAssertionAnalyzerDocsCompilation()
     {
         MSBuildLocator.RegisterDefaults();
 
         using var workspace = MSBuildWorkspace.Create();
 
-        var project = await workspace.OpenProjectAsync(Path.Combine("..", "FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs", "FluentAssertions.Analyzers.FluentAssertionAnalyzerDocs.csproj"));
+        var project = await workspace.OpenProjectAsync(_fluentAssertionsAnalyzersProjectPath);
 
         return await project.GetCompilationAsync();
     }
+
+    public static string ReplaceStackTrace(string messageIncludingStacktrace)
+    {
+        var currentFullPath = Path.GetFullPath(_fluentAssertionsAnalyzersDocsDirectory) + Path.DirectorySeparatorChar;
+        var repoRootIndex = currentFullPath.LastIndexOf(Path.DirectorySeparatorChar + "fluentassertions.analyzers" + Path.DirectorySeparatorChar, StringComparison.Ordinal);
+        var unixFullPath = currentFullPath
+            .Replace(currentFullPath.Substring(0, repoRootIndex), "/Users/runner/work")
+            .Replace(Path.DirectorySeparatorChar, _unixDirectorySeparator);
+
+        return messageIncludingStacktrace.Replace(currentFullPath, unixFullPath);
+    }
 }