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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.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeRefactorings;
using Microsoft.CodeAnalysis.CodeStyle;
using Microsoft.CodeAnalysis.CSharp.CodeStyle;
using Microsoft.CodeAnalysis.CSharp.UseExpressionBody;
using Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.CodeRefactorings;
using Microsoft.CodeAnalysis.Editor.UnitTests.CodeActions;
using Microsoft.CodeAnalysis.Test.Utilities;
using Roslyn.Test.Utilities;
using Xunit;
namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.UseExpressionBody;
[Trait(Traits.Feature, Traits.Features.CodeActionsUseExpressionBody)]
public class UseExpressionBodyForIndexersRefactoringTests : AbstractCSharpCodeActionTest_NoEditor
{
protected override CodeRefactoringProvider CreateCodeRefactoringProvider(TestWorkspace workspace, TestParameters parameters)
=> new UseExpressionBodyCodeRefactoringProvider();
private OptionsCollection UseExpressionBody
=> this.Option(CSharpCodeStyleOptions.PreferExpressionBodiedIndexers, CSharpCodeStyleOptions.WhenPossibleWithSilentEnforcement);
private OptionsCollection UseExpressionBodyDisabledDiagnostic
=> this.Option(CSharpCodeStyleOptions.PreferExpressionBodiedIndexers, new CodeStyleOption2<ExpressionBodyPreference>(ExpressionBodyPreference.WhenPossible, NotificationOption2.None));
private OptionsCollection UseBlockBody
=> this.Option(CSharpCodeStyleOptions.PreferExpressionBodiedIndexers, CSharpCodeStyleOptions.NeverWithSilentEnforcement);
private OptionsCollection UseBlockBodyDisabledDiagnostic
=> this.Option(CSharpCodeStyleOptions.PreferExpressionBodiedIndexers, new CodeStyleOption2<ExpressionBodyPreference>(ExpressionBodyPreference.Never, NotificationOption2.None));
[Fact]
public async Task TestNotOfferedIfUserPrefersExpressionBodiesAndInBlockBody()
{
await TestMissingAsync(
@"class C
{
int this[int i]
{
get
{
[||]return Bar();
}
}
}", parameters: new TestParameters(options: UseExpressionBody));
}
[Fact]
public async Task TestOfferedIfUserPrefersExpressionBodiesWithoutDiagnosticAndInBlockBody()
{
await TestInRegularAndScript1Async(
@"class C
{
int this[int i]
{
get
{
[||]return Bar();
}
}
}",
@"class C
{
int this[int i] => Bar();
}", parameters: new TestParameters(options: UseExpressionBodyDisabledDiagnostic));
}
[Fact]
public async Task TestOfferedIfUserPrefersBlockBodiesAndInBlockBody()
{
await TestInRegularAndScript1Async(
@"class C
{
int this[int i]
{
get
{
[||]return Bar();
}
}
}",
@"class C
{
int this[int i] => Bar();
}", parameters: new TestParameters(options: UseBlockBody));
}
[Fact]
public async Task TestNotOfferedInLambda()
{
await TestMissingAsync(
@"class C
{
Action Goo[int i]
{
get
{
return () => { [||] };
}
}
}", parameters: new TestParameters(options: UseBlockBody));
}
[Fact]
public async Task TestNotOfferedIfUserPrefersBlockBodiesAndInExpressionBody()
{
await TestMissingAsync(
@"class C
{
int this[int i] => [||]Bar();
}", parameters: new TestParameters(options: UseBlockBody));
}
[Fact]
public async Task TestOfferedIfUserPrefersBlockBodiesWithoutDiagnosticAndInExpressionBody()
{
await TestInRegularAndScript1Async(
@"class C
{
int this[int i] => [||]Bar();
}",
@"class C
{
int this[int i]
{
get
{
return Bar();
}
}
}", parameters: new TestParameters(options: UseBlockBodyDisabledDiagnostic));
}
[Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20363")]
public async Task TestOfferedIfUserPrefersExpressionBodiesAndInExpressionBody()
{
await TestInRegularAndScript1Async(
@"class C
{
int this[int i] => [||]Bar();
}",
@"class C
{
int this[int i]
{
get
{
return Bar();
}
}
}", parameters: new TestParameters(options: UseExpressionBody));
}
}
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