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Revert "Remove the 'intent' subsystem from roslyn (#79179)" #79198

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Original file line number Diff line number Diff line change
@@ -0,0 +1,273 @@
// 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.Threading.Tasks;
using Microsoft.CodeAnalysis.CodeStyle;
using Microsoft.CodeAnalysis.Editor.UnitTests.CodeActions;
using Microsoft.CodeAnalysis.Features.Intents;
using Microsoft.CodeAnalysis.Test.Utilities;
using Xunit;

namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Intents;

[UseExportProvider]
public sealed class AddConstructorParameterIntentTests : IntentTestsBase
{
[Fact]
public async Task AddConstructorParameterWithField()
{
var initialText =
"""
class C
{
private readonly int _someInt;{|priorSelection:|}

public C()
{
}
}
""";

var currentText =
"""
class C
{
private readonly int _someInt;

public C(int som)
{
}
}
""";
var expectedText =
"""
class C
{
private readonly int _someInt;

public C(int someInt)
{
_someInt = someInt;
}
}
""";

await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
}

[Fact]
public async Task AddConstructorParameterWithProperty()
{
var initialText =
"""
class C
{
public int SomeInt { get; }{|priorSelection:|}

public C()
{
}
}
""";
var currentText =
"""
class C
{
public int SomeInt { get; }

public C(int som)
{
}
}
""";
var expectedText =
"""
class C
{
public int SomeInt { get; }

public C(int someInt)
{
SomeInt = someInt;
}
}
""";

await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
}

[Fact]
public async Task AddMultipleConstructorParameters()
{
var initialText =
"""
class C
{
{|priorSelection:private readonly int _someInt;
private readonly string _someString;|}

public C()
{
}
}
""";
var currentText =
"""
class C
{
{|priorSelection:private readonly int _someInt;
private readonly string _someString;|}

public C(int som)
{
}
}
""";
var expectedText =
"""
class C
{
private readonly int _someInt;
private readonly string _someString;

public C(int someInt, string someString)
{
_someInt = someInt;
_someString = someString;
}
}
""";

await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
}

[Fact]
public async Task AddConstructorParameterOnlyAddsSelected()
{
var initialText =
"""
class C
{
private readonly int _someInt;{|priorSelection:|}
private readonly string _someString;

public C()
{
}
}
""";
var currentText =
"""
class C
{
private readonly int _someInt;{|priorSelection:|}
private readonly string _someString;

public C(int som)
{
}
}
""";
var expectedText =
"""
class C
{
private readonly int _someInt;
private readonly string _someString;

public C(int someInt)
{
_someInt = someInt;
}
}
""";

await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
}

[Fact]
public async Task AddConstructorParameterUsesCodeStyleOption()
{
var initialText =
"""
class C
{
private readonly int _someInt;{|priorSelection:|}

public C()
{
}
}
""";
var currentText =
"""
class C
{
private readonly int _someInt;{|priorSelection:|}

public C(int som)
{
}
}
""";
var expectedText =
"""
class C
{
private readonly int _someInt;

public C(int someInt)
{
this._someInt = someInt;
}
}
""";
await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText,
options: new OptionsCollection(LanguageNames.CSharp)
{
{ CodeStyleOptions2.QualifyFieldAccess, true }
}).ConfigureAwait(false);
}

[Fact]
public async Task AddConstructorParameterUsesExistingAccessibility()
{
var initialText =
"""
class C
{
private readonly int _someInt;{|priorSelection:|}

protected C()
{
}
}
""";
var currentText =
"""
class C
{
private readonly int _someInt;{|priorSelection:|}

protected C(int som)
{
}
}
""";
var expectedText =
"""
class C
{
private readonly int _someInt;

protected C(int someInt)
{
_someInt = someInt;
}
}
""";

await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
}
}
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