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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.
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.LanguageServer.Protocol;
using Roslyn.Test.Utilities;
using Roslyn.Utilities;
using Xunit;
using Xunit.Abstractions;
using LSP = Roslyn.LanguageServer.Protocol;
namespace Microsoft.CodeAnalysis.LanguageServer.UnitTests.OnAutoInsert
{
[Trait(Traits.Feature, Traits.Features.AutomaticCompletion)]
public class OnAutoInsertTests : AbstractLanguageServerProtocolTests
{
public OnAutoInsertTests(ITestOutputHelper testOutputHelper) : base(testOutputHelper)
{
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_CommentCharacter(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
///{|type:|}
void M()
{
}
}";
var expected =
@"class A
{
/// <summary>
/// $0
/// </summary>
void M()
{
}
}";
await VerifyMarkupAndExpected("/", markup, expected, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_CommentCharacter_WithComment(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
///{|type:|} This is an existing comment
void M()
{
}
}";
var expected =
@"class A
{
/// <summary>
/// $0This is an existing comment
/// </summary>
void M()
{
}
}";
await VerifyMarkupAndExpected("/", markup, expected, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_CommentCharacter_WithComment_NoSpace(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
///{|type:|}This is an existing comment
void M()
{
}
}";
var expected =
@"class A
{
/// <summary>
/// $0This is an existing comment
/// </summary>
void M()
{
}
}";
await VerifyMarkupAndExpected("/", markup, expected, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_CommentCharacter_VB(bool mutatingLspWorkspace)
{
var markup =
@"Class A
'''{|type:|}
Sub M()
End Sub
End Class";
var expected =
@"Class A
''' <summary>
''' $0
''' </summary>
Sub M()
End Sub
End Class";
await VerifyMarkupAndExpected("'", markup, expected, mutatingLspWorkspace, languageName: LanguageNames.VisualBasic);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_ParametersAndReturns(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
///{|type:|}
string M(int foo, bool bar)
{
}
}";
var expected =
@"class A
{
/// <summary>
/// $0
/// </summary>
/// <param name=""foo""></param>
/// <param name=""bar""></param>
/// <returns></returns>
string M(int foo, bool bar)
{
}
}";
await VerifyMarkupAndExpected("/", markup, expected, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_CommentCharacterInsideMethod_Ignored(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
void M()
{
///{|type:|}
}
}";
await VerifyNoResult("/", markup, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_VisualBasicCommentCharacter_Ignored(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
'''{|type:|}
void M()
{
}
}";
await VerifyNoResult("'", markup, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_EnterKey(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
/// <summary>
/// Foo
/// </summary>
{|type:|}
void M()
{
}
}";
var expected =
@"class A
{
/// <summary>
/// Foo
/// </summary>
/// $0
void M()
{
}
}";
await VerifyMarkupAndExpected("\n", markup, expected, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_EnterKey2(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
/// <summary>
/// Foo
{|type:|}
/// </summary>
void M()
{
}
}";
var expected =
@"class A
{
/// <summary>
/// Foo
/// $0
/// </summary>
void M()
{
}
}";
await VerifyMarkupAndExpected("\n", markup, expected, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_EnterKey3(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
///
{|type:|}
string M(int foo, bool bar)
{
}
}";
var expected =
@"class A
{
/// <summary>
/// $0
/// </summary>
/// <param name=""foo""></param>
/// <param name=""bar""></param>
/// <returns></returns>
string M(int foo, bool bar)
{
}
}";
await VerifyMarkupAndExpected("\n", markup, expected, mutatingLspWorkspace);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_BraceFormatting(bool mutatingLspWorkspace)
{
// The test starts with the closing brace already on a new line.
// In LSP, hitting enter will first trigger a didChange event for the new line character
// (bringing the server text to the form below) and then trigger OnAutoInsert
// for the new line character.
var markup =
@"class A
{
void M() {{|type:|}
}
}";
var expected =
@"class A
{
void M()
{
$0
}
}";
await VerifyMarkupAndExpected("\n", markup, expected, mutatingLspWorkspace, serverKind: WellKnownLspServerKinds.RazorLspServer);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_BraceFormattingWithTabs(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
void M() {{|type:|}
}
}";
// Use show whitespace when modifying the expected value.
// The method braces and caret location should be indented with tabs.
var expected =
@"class A
{
void M()
{
$0
}
}";
await VerifyMarkupAndExpected("\n", markup, expected, mutatingLspWorkspace, insertSpaces: false, tabSize: 4, serverKind: WellKnownLspServerKinds.RazorLspServer);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_BraceFormattingInsideMethod(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
void M()
{
if (true) {{|type:|}
}
}
}";
var expected =
@"class A
{
void M()
{
if (true)
{
$0
}
}
}";
await VerifyMarkupAndExpected("\n", markup, expected, mutatingLspWorkspace, serverKind: WellKnownLspServerKinds.RazorLspServer);
}
[Theory, CombinatorialData]
public async Task OnAutoInsert_BraceFormattingNoResultInInterpolation(bool mutatingLspWorkspace)
{
var markup =
@"class A
{
void M()
{
var s = $""Hello {{|type:|}
}
}";
await VerifyNoResult("\n", markup, mutatingLspWorkspace);
}
[Theory, CombinatorialData, WorkItem("https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1260219")]
public async Task OnAutoInsert_BraceFormattingDoesNotInsertExtraEmptyLines(bool mutatingLspWorkspace)
{
// The test starts with the closing brace already on a new line.
// In LSP, hitting enter will first trigger a didChange event for the new line character
// (bringing the server text to the form below) and then trigger OnAutoInsert
// for the new line character.
var markup =
@"class A
{
void M()
{
{|type:|}
}
}";
await VerifyNoResult("\n", markup, mutatingLspWorkspace);
}
[Theory, CombinatorialData, WorkItem("https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1260219")]
public async Task OnAutoInsert_BraceFormattingDoesNotMoveCaretOnEnterInsideBraces(bool mutatingLspWorkspace)
{
// The test starts with the closing brace already on a new line.
// In LSP, hitting enter will first trigger a didChange event for the new line character
// (bringing the server text to the form below) and then trigger OnAutoInsert
// for the new line character.
var markup =
@"class A
{
void M()
{{|type:|}
}
}";
await VerifyNoResult("\n", markup, mutatingLspWorkspace);
}
private async Task VerifyMarkupAndExpected(
string characterTyped,
string markup,
string expected,
bool mutatingLspWorkspace,
bool insertSpaces = true,
int tabSize = 4,
string languageName = LanguageNames.CSharp,
WellKnownLspServerKinds serverKind = WellKnownLspServerKinds.AlwaysActiveVSLspServer)
{
Task<TestLspServer> testLspServerTask;
if (languageName == LanguageNames.CSharp)
{
testLspServerTask = CreateTestLspServerAsync(markup, mutatingLspWorkspace, new InitializationOptions { ClientCapabilities = CapabilitiesWithVSExtensions, ServerKind = serverKind });
}
else if (languageName == LanguageNames.VisualBasic)
{
testLspServerTask = CreateVisualBasicTestLspServerAsync(markup, mutatingLspWorkspace, new InitializationOptions { ClientCapabilities = CapabilitiesWithVSExtensions, ServerKind = serverKind });
}
else
{
throw ExceptionUtilities.UnexpectedValue(languageName);
}
await using var testLspServer = await testLspServerTask;
var locationTyped = testLspServer.GetLocations("type").Single();
var document = await testLspServer.GetDocumentAsync(locationTyped.Uri);
var documentText = await document.GetTextAsync();
var result = await RunOnAutoInsertAsync(testLspServer, characterTyped, locationTyped, insertSpaces, tabSize);
AssertEx.NotNull(result);
Assert.Equal(InsertTextFormat.Snippet, result.TextEditFormat);
var actualText = ApplyTextEdits([result.TextEdit], documentText);
Assert.Equal(expected, actualText);
}
private async Task VerifyNoResult(string characterTyped, string markup, bool mutatingLspWorkspace, bool insertSpaces = true, int tabSize = 4)
{
await using var testLspServer = await CreateTestLspServerAsync(markup, mutatingLspWorkspace);
var locationTyped = testLspServer.GetLocations("type").Single();
var documentText = await (await testLspServer.GetDocumentAsync(locationTyped.Uri)).GetTextAsync();
var result = await RunOnAutoInsertAsync(testLspServer, characterTyped, locationTyped, insertSpaces, tabSize);
Assert.Null(result);
}
private static async Task<LSP.VSInternalDocumentOnAutoInsertResponseItem?> RunOnAutoInsertAsync(
TestLspServer testLspServer,
string characterTyped,
LSP.Location locationTyped,
bool insertSpaces,
int tabSize)
{
return await testLspServer.ExecuteRequestAsync<LSP.VSInternalDocumentOnAutoInsertParams, LSP.VSInternalDocumentOnAutoInsertResponseItem?>(VSInternalMethods.OnAutoInsertName,
CreateDocumentOnAutoInsertParams(characterTyped, locationTyped, insertSpaces, tabSize), CancellationToken.None);
}
private static LSP.VSInternalDocumentOnAutoInsertParams CreateDocumentOnAutoInsertParams(
string characterTyped,
LSP.Location locationTyped,
bool insertSpaces,
int tabSize)
=> new LSP.VSInternalDocumentOnAutoInsertParams
{
Position = locationTyped.Range.Start,
Character = characterTyped,
TextDocument = CreateTextDocumentIdentifier(locationTyped.Uri),
Options = new LSP.FormattingOptions
{
InsertSpaces = insertSpaces,
TabSize = tabSize
}
};
}
}
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