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// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
#nullable disable
using System;
using System.Collections.Generic;
using System.Collections.Immutable;
using System.Linq;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.CommentSelection;
using Microsoft.CodeAnalysis.Editor;
using Microsoft.CodeAnalysis.Editor.UnitTests;
using Microsoft.CodeAnalysis.Editor.UnitTests.Utilities;
using Microsoft.CodeAnalysis.Text;
using Microsoft.VisualStudio.Text;
using Microsoft.VisualStudio.Text.Editor;
using Roslyn.Test.Utilities;
using Roslyn.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.Test.Utilities.CommentSelection
{
public abstract class AbstractToggleCommentTestBase
{
internal abstract AbstractCommentSelectionBase<ValueTuple> GetToggleCommentCommandHandler(EditorTestWorkspace workspace);
internal abstract EditorTestWorkspace GetWorkspace(string markup, TestComposition composition);
protected void ToggleComment(string markup, string expected)
=> ToggleCommentMultiple(markup, [expected]);
protected void ToggleCommentMultiple(string markup, string[] expectedText)
{
using var workspace = GetWorkspace(markup, composition: EditorTestCompositions.EditorFeatures);
var doc = workspace.Documents.First();
SetupSelection(doc.GetTextView(), doc.SelectedSpans.Select(s => Span.FromBounds(s.Start, s.End)));
var commandHandler = GetToggleCommentCommandHandler(workspace);
var textView = doc.GetTextView();
var textBuffer = doc.GetTextBuffer();
for (var i = 0; i < expectedText.Length; i++)
{
commandHandler.ExecuteCommand(textView, textBuffer, ValueTuple.Create(), TestCommandExecutionContext.Create());
AssertCommentResult(doc.GetTextBuffer(), textView, expectedText[i]);
}
}
protected void ToggleCommentWithProjectionBuffer(string surfaceBufferMarkup, string subjectBufferMarkup, string entireExpectedMarkup)
{
using var workspace = GetWorkspace(subjectBufferMarkup, composition: EditorTestCompositions.EditorFeatures);
var document = workspace.CreateProjectionBufferDocument(surfaceBufferMarkup, workspace.Documents);
SetupSelection(document.GetTextView(), document.SelectedSpans.Select(s => Span.FromBounds(s.Start, s.End)));
var commandHandler = GetToggleCommentCommandHandler(workspace);
var textView = document.GetTextView();
var originalSubjectBuffer = GetBufferForContentType(ContentTypeNames.CSharpContentType, textView);
commandHandler.ExecuteCommand(textView, originalSubjectBuffer, ValueTuple.Create(), TestCommandExecutionContext.Create());
AssertCommentResult(textView.TextBuffer, textView, entireExpectedMarkup);
}
private static ITextBuffer GetBufferForContentType(string contentTypeName, ITextView textView)
=> textView.BufferGraph.GetTextBuffers(b => b.ContentType.IsOfType(contentTypeName)).Single();
private static void AssertCommentResult(ITextBuffer textBuffer, IWpfTextView textView, string expectedText)
{
MarkupTestFile.GetSpans(expectedText, out var actualExpectedText, out var expectedSpans);
Assert.Equal(actualExpectedText, textBuffer.CurrentSnapshot.GetText());
if (!expectedSpans.IsEmpty)
{
AssertEx.Equal(expectedSpans, textView.Selection.SelectedSpans.Select(snapshotSpan => TextSpan.FromBounds(snapshotSpan.Start, snapshotSpan.End)));
}
}
private static void SetupSelection(IWpfTextView textView, IEnumerable<Span> spans)
{
var snapshot = textView.TextSnapshot;
if (spans.Count() == 1)
{
textView.Selection.Select(new SnapshotSpan(snapshot, spans.Single()), isReversed: false);
textView.Caret.MoveTo(new SnapshotPoint(snapshot, spans.Single().End));
}
else if (spans.Count() > 1)
{
textView.Selection.Mode = TextSelectionMode.Box;
textView.Selection.Select(new VirtualSnapshotPoint(snapshot, spans.First().Start),
new VirtualSnapshotPoint(snapshot, spans.Last().End));
textView.Caret.MoveTo(new SnapshotPoint(snapshot, spans.Last().End));
}
}
}
}
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