Tests

Author: davidwengier

src/Razor/test/Microsoft.VisualStudio.LanguageServices.Razor.Test/Cohost/Formatting/HtmlFormattingPassTest.cs

@@ -0,0 +1,79 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+
+using System.Linq;
+using System.Runtime.CompilerServices;
+using System.Runtime.Serialization;
+using System.Text.Json;
+using System.Threading.Tasks;
+using Microsoft.AspNetCore.Razor;
+using Microsoft.AspNetCore.Razor.Language;
+using Microsoft.AspNetCore.Razor.Test.Common;
+using Microsoft.CodeAnalysis.ExternalAccess.Razor.Features;
+using Microsoft.CodeAnalysis.Razor.DocumentMapping;
+using Microsoft.CodeAnalysis.Razor.Formatting;
+using Microsoft.CodeAnalysis.Razor.Protocol;
+using Microsoft.CodeAnalysis.Remote.Razor.DocumentMapping;
+using Microsoft.CodeAnalysis.Remote.Razor.ProjectSystem;
+using Microsoft.CodeAnalysis.Text;
+using Microsoft.VisualStudio.Razor.LanguageClient.Cohost;
+using Microsoft.VisualStudio.Razor.LanguageClient.Cohost.Formatting;
+using Xunit;
+using Xunit.Abstractions;
+
+namespace Microsoft.VisualStudio.LanguageServices.Razor.Test.Cohost.Formatting;
+
+/// <summary>
+/// Not tests of the formatting log, but tests that use formatting logs sent in
+/// by users reporting issues.
+/// </summary>
+[Collection(HtmlFormattingCollection.Name)]
+public class HtmlFormattingPassTest(FormattingTestContext context, HtmlFormattingFixture fixture, ITestOutputHelper testOutput)
+    : FormattingTestBase(context, fixture.Service, testOutput), IClassFixture<FormattingTestContext>
+{
+    [Theory]
+    [WorkItem("https://github.com/dotnet/razor/issues/11846")]
+    [InlineData("", "")]
+    [InlineData("$", "")]
+    [InlineData("", "u8")]
+    [InlineData("$", "u8")]
+    [InlineData("@", "")]
+    [InlineData("@$", "")]
+    [InlineData(@"""""""", @"""""""")]
+    [InlineData(@"$""""""", @"""""""")]
+    [InlineData(@"""""""\r\n", @"\r\n""""""")]
+    [InlineData(@"$""""""\r\n", @"\r\n""""""")]
+    [InlineData(@"""""""", @"""""""u8")]
+    [InlineData(@"$""""""", @"""""""u8")]
+    [InlineData(@"""""""\r\n", @"\r\n""""""u8")]
+    [InlineData(@"$""""""\r\n", @"\r\n""""""u8")]
+    public async Task RemoveEditThatSplitsStringLiteral(string prefix, string suffix)
+    {
+        var document = CreateProjectAndRazorDocument($"""
+            @({prefix}"this is a line that is 46 characters long"{suffix})
+            """);
+        var change = new TextChange(new TextSpan(24, 0), "\r\n");
+        var edits = await GetHtmlFormattingEditsAsync(document, change);
+        Assert.Empty(edits);
+    }
+
+    private async Task<System.Collections.Immutable.ImmutableArray<TextChange>> GetHtmlFormattingEditsAsync(CodeAnalysis.TextDocument document, TextChange change)
+    {
+        var documentMappingService = OOPExportProvider.GetExportedValue<IDocumentMappingService>();
+        var pass = new HtmlFormattingPass(documentMappingService);
+
+        var snapshotManager = OOPExportProvider.GetExportedValue<RemoteSnapshotManager>();
+        var snapshot = snapshotManager.GetSnapshot(document);
+
+        var loggerFactory = new TestFormattingLoggerFactory(TestOutputHelper);
+        var logger = loggerFactory.CreateLogger(document.FilePath.AssumeNotNull(), "Html");
+        var codeDocument = await snapshot.GetGeneratedOutputAsync(DisposalToken);
+        var context = FormattingContext.Create(snapshot,
+            codeDocument,
+            new RazorFormattingOptions(),
+            logger);
+
+        var edits = await pass.GetTestAccessor().FilterIncomingChangesAsync(context, [change], DisposalToken);
+        return edits;
+    }
+}