src/Features/CSharpTest/UseExpressionBodyForLambda/UseExpressionBodyForLambdasRefactoringTests.cs - main - githubmirror/roslyn

src/Features/CSharpTest/UseExpressionBodyForLambda/UseExpressionBodyForLambdasRefactoringTests.cs
212 строк6 KB
Cyrus Najmabadi
Renames
23 июл 2025, 10:53
23 июл 2025, 10:53a167ea9
// 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.CSharp.CodeStyle;
using Microsoft.CodeAnalysis.CSharp.UseExpressionBodyForLambda;
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 sealed class UseExpressionBodyForLambdasRefactoringTests : AbstractCSharpCodeActionTest_NoEditor
{
    protected override CodeRefactoringProvider CreateCodeRefactoringProvider(TestWorkspace workspace, TestParameters parameters)
        => new UseExpressionBodyForLambdaCodeRefactoringProvider();

    private OptionsCollection UseExpressionBody
        => this.Option(CSharpCodeStyleOptions.PreferExpressionBodiedLambdas, CSharpCodeStyleOptions.WhenPossibleWithSuggestionEnforcement);

    private OptionsCollection UseExpressionBodyDisabledDiagnostic
        => this.Option(CSharpCodeStyleOptions.PreferExpressionBodiedLambdas, CSharpCodeStyleOptions.WhenPossibleWithSilentEnforcement);

    private OptionsCollection UseBlockBody
        => this.Option(CSharpCodeStyleOptions.PreferExpressionBodiedLambdas, CSharpCodeStyleOptions.NeverWithSuggestionEnforcement);

    private OptionsCollection UseBlockBodyDisabledDiagnostic
        => this.Option(CSharpCodeStyleOptions.PreferExpressionBodiedLambdas, CSharpCodeStyleOptions.NeverWithSilentEnforcement);

    [Fact]
    public Task TestNotOfferedIfUserPrefersExpressionBodiesAndInBlockBody()
        => TestMissingAsync(
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x [|=>|]
                    {
                        return x.ToString();
                    }
                }
            }
            """, parameters: new TestParameters(options: UseExpressionBody));

    [Fact]
    public Task TestOfferedIfUserPrefersExpressionBodiesWithoutDiagnosticAndInBlockBody()
        => TestInRegularAndScriptAsync(
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x [||]=>
                    {
                        return x.ToString();
                    };
                }
            }
            """,
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x => x.ToString();
                }
            }
            """, parameters: new TestParameters(options: UseExpressionBodyDisabledDiagnostic));

    [Fact]
    public Task TestOfferedIfUserPrefersBlockBodiesAndInBlockBody()
        => TestInRegularAndScriptAsync(
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x [||]=>
                    {
                        return x.ToString();
                    };
                }
            }
            """,
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x => x.ToString();
                }
            }
            """, parameters: new TestParameters(options: UseBlockBody));

    [Fact]
    public Task TestNotOfferedInMethod()
        => TestMissingAsync(
            """
            class C
            {
                int [|Goo|]()
                {
                    return 1;
                }
            }
            """, parameters: new TestParameters(options: UseBlockBody));

    [Fact]
    public Task TestNotOfferedIfUserPrefersBlockBodiesAndInExpressionBody()
        => TestMissingAsync(
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x [||]=> x.ToString();
                }
            }
            """, parameters: new TestParameters(options: UseBlockBody));

    [Fact]
    public Task TestOfferedIfUserPrefersBlockBodiesWithoutDiagnosticAndInExpressionBody()
        => TestInRegularAndScriptAsync(
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x [||]=> x.ToString();
                }
            }
            """,
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x =>
                    {
                        return x.ToString();
                    };
                }
            }
            """, parameters: new TestParameters(options: UseBlockBodyDisabledDiagnostic));

    [Fact]
    public Task TestOfferedIfUserPrefersExpressionBodiesAndInExpressionBody()
        => TestInRegularAndScriptAsync(
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x [||]=> x.ToString();
                }
            }
            """,
            """
            using System;

            class C
            {
                void Goo()
                {
                    Func<int, string> f = x =>
                    {
                        return x.ToString();
                    };
                }
            }
            """, parameters: new TestParameters(options: UseExpressionBody));

    [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/74137")]
    public Task TestNotWithPreprocessorDirectives()
        => TestMissingAsync(
            """
            app.UseSwaggerUI(c [||]=>
            {
            #if DEBUG
                c.SwaggerEndpoint("/swagger/v1/swagger.json", "API V1");
            #else
                c.SwaggerEndpoint("/api/swagger/v1/swagger.json", "API V1");
            #endif
            });
            """, parameters: new TestParameters(options: UseExpressionBodyDisabledDiagnostic));
}