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Fix CA1027 fires for simple aliases #7120

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Jan 2, 2024
Merged

Fix CA1027 fires for simple aliases #7120

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4 changes: 2 additions & 2 deletions ...lyzers/Core/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/EnumWithFlagsAttribute.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright (c) Microsoft. All Rights Reserved. Licensed under the MIT license. See License.txt in the project root for license information.
// Copyright (c) Microsoft. All Rights Reserved. Licensed under the MIT license. See License.txt in the project root for license information.

using System.Collections.Generic;
using System.Collections.Immutable;
Expand Down Expand Up @@ -124,7 +124,7 @@ private static bool IsContiguous(IList<ulong> list)

bool first = true;
ulong previous = 0;
foreach (ulong element in list.OrderBy(t => t))
foreach (ulong element in list.Distinct().OrderBy(t => t))
{
if (first)
{
Expand Down
43 changes: 42 additions & 1 deletion ...tTests/Microsoft.CodeQuality.Analyzers/ApiDesignGuidelines/EnumWithFlagsAttributeTests.cs
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
// Copyright (c) Microsoft. All Rights Reserved. Licensed under the MIT license. See License.txt in the project root for license information.
// Copyright (c) Microsoft. All Rights Reserved. Licensed under the MIT license. See License.txt in the project root for license information.

using System.Globalization;
using System.Threading.Tasks;
Expand Down Expand Up @@ -566,6 +566,47 @@ End Enum
GetCA2217BasicResultAt(22, 13, "LabelsClass", "2"));
}

[Fact, WorkItem(6982, "https://github.com/dotnet/roslyn-analyzers/issues/6982")]
public async Task CSharp_EnumWithFlagsAttributes_MembersShareValueAsync()
{
var code = @"{0}
public enum MembersShareValueEnumClass
{{
One,
Tow,
Three,
Two = Tow
}}
";
// Verify no CA1027: Mark enums with FlagsAttribute
string codeWithoutFlags = GetCSharpCode_EnumWithFlagsAttributes(code, hasFlags: false);
await VerifyCS.VerifyAnalyzerAsync(codeWithoutFlags);

// Verify no CA2217: Do not mark enums with FlagsAttribute
string codeWithFlags = GetCSharpCode_EnumWithFlagsAttributes(code, hasFlags: true);
await VerifyCS.VerifyAnalyzerAsync(codeWithFlags);
}

[Fact, WorkItem(6982, "https://github.com/dotnet/roslyn-analyzers/issues/6982")]
public async Task VisualBasic_EnumWithFlagsAttributes_MembersShareValueAsync()
{
string code = @"{0}
Public Enum MembersShareValueEnumClass
One
Tow
Three
Two = Tow
End Enum
";
// Verify no CA1027: Mark enums with FlagsAttribute
string codeWithoutFlags = GetBasicCode_EnumWithFlagsAttributes(code, hasFlags: false);
await VerifyVB.VerifyAnalyzerAsync(codeWithoutFlags);

// Verify no CA2217: Do not mark enums with FlagsAttribute
string codeWithFlags = GetBasicCode_EnumWithFlagsAttributes(code, hasFlags: true);
await VerifyVB.VerifyAnalyzerAsync(codeWithFlags);
}

private static DiagnosticResult GetCA1027CSharpResultAt(int line, int column, string enumTypeName)
#pragma warning disable RS0030 // Do not use banned APIs
=> VerifyCS.Diagnostic(EnumWithFlagsAttributeAnalyzer.Rule1027)
Expand Down