add support for nunit attachments (#1192)

.gitignore

@@ -18,3 +18,4 @@ src/Verify.Tests/Tests.TextNegative.verified.tmp
 *.cache
 src/Verify.Tests/NewLineTests.StringWithDifferingNewline.verified.txt
 src/Verify.MSTest.Tests/Tests.AutoVerifyHasAttachment.verified.txt
+src/Verify.NUnit.Tests/Tests.AutoVerifyHasAttachment.verified.txt

src/Directory.Build.props

@@ -2,7 +2,7 @@
 <Project>
   <PropertyGroup>
     <NoWarn>CS1591;CS0649;xUnit1026;xUnit1013;CS1573;VerifyTestsProjectDir;VerifySetParameters</NoWarn>
-    <Version>24.0.0</Version>
+    <Version>24.1.0</Version>
     <ImplicitUsings>enable</ImplicitUsings>
     <LangVersion>preview</LangVersion>
     <AssemblyVersion>1.0.0</AssemblyVersion>

src/Verify.NUnit.Tests/Tests.cs

@@ -88,4 +88,80 @@ public class Tests
         VerifyZip(pathToArchive);
 
     #endregion
+
+    static List<TestAttachment> GetAttachments() =>
+        TestExecutionContext.CurrentContext.CurrentResult.TestAttachments.ToList();
+
+    [Test]
+    public void ChangeHasAttachment()
+    {
+        var settings = new VerifySettings();
+        settings.DisableDiff();
+        ThrowsAsync<VerifyException>(
+            () => Verify("Bar", settings));
+        var list = GetAttachments();
+        AreEqual(1, list.Count);
+        var file = Path.GetFileName(list[0].FilePath);
+        AreEqual($"Tests.ChangeHasAttachment.{Namer.TargetFrameworkNameAndVersion}.received.txt", file);
+    }
+
+    [Test]
+    public async Task AutoVerifyHasAttachment()
+    {
+        var path = CurrentFile.Relative("Tests.AutoVerifyHasAttachment.verified.txt");
+        var fullPath = Path.GetFullPath(path);
+        File.Delete(fullPath);
+        File.WriteAllText(fullPath,"Foo");
+        var settings = new VerifySettings();
+        settings.DisableDiff();
+        settings.AutoVerify();
+        await Verify("Bar", settings);
+        var list = GetAttachments();
+        AreEqual(1, list.Count);
+        var file = Path.GetFileName(list[0].FilePath);
+        AreEqual($"Tests.AutoVerifyHasAttachment.{Namer.TargetFrameworkNameAndVersion}.received.txt", file);
+    }
+
+    [Test]
+    public void NewHasAttachment()
+    {
+        var settings = new VerifySettings();
+        settings.DisableDiff();
+        ThrowsAsync<VerifyException>(
+            () => Verify("Bar", settings));
+        var list = GetAttachments();
+        AreEqual(1, list.Count);
+        var file = Path.GetFileName(list[0].FilePath);
+        AreEqual($"Tests.NewHasAttachment.{Namer.TargetFrameworkNameAndVersion}.received.txt", file);
+    }
+
+    [Test]
+    public void MultipleChangedHasAttachment()
+    {
+        var settings = new VerifySettings();
+        settings.DisableDiff();
+        ThrowsAsync<VerifyException>(
+            () => Verify("Bar", [new Target("txt", "Value")], settings));
+        var list = GetAttachments();
+        AreEqual(2, list.Count);
+        var file0 = Path.GetFileName(list[0].FilePath);
+        var file1 = Path.GetFileName(list[1].FilePath);
+        AreEqual($"Tests.MultipleChangedHasAttachment.{Namer.TargetFrameworkNameAndVersion}#00.received.txt", file0);
+        AreEqual($"Tests.MultipleChangedHasAttachment.{Namer.TargetFrameworkNameAndVersion}#01.received.txt", file1);
+    }
+
+    [Test]
+    public void MultipleNewHasAttachment()
+    {
+        var settings = new VerifySettings();
+        settings.DisableDiff();
+        ThrowsAsync<VerifyException>(
+            () => Verify("Bar",[new Target("txt", "Value")], settings));
+        var list = GetAttachments();
+        AreEqual(2, list.Count);
+        var file0 = Path.GetFileName(list[0].FilePath);
+        var file1 = Path.GetFileName(list[1].FilePath);
+        AreEqual($"Tests.MultipleNewHasAttachment.{Namer.TargetFrameworkNameAndVersion}#00.received.txt", file0);
+        AreEqual($"Tests.MultipleNewHasAttachment.{Namer.TargetFrameworkNameAndVersion}#01.received.txt", file1);
+    }
 }

src/Verify.NUnit/Verifier.cs

@@ -2,6 +2,18 @@
 
 public static partial class Verifier
 {
+    static Task AddFile(FilePair path)
+    {
+        TestContext.AddTestAttachment(path.ReceivedPath);
+        return Task.CompletedTask;
+    }
+
+    static Verifier()
+    {
+        VerifierSettings.OnFirstVerify((pair, _, _) => AddFile(pair));
+        VerifierSettings.OnVerifyMismatch((pair, _, _) => AddFile(pair));
+    }
+
     static InnerVerifier BuildVerifier(string sourceFile, VerifySettings settings, bool useUniqueDirectory)
     {
         Guard.AgainstBadSourceFile(sourceFile);