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Add tests for DiscardDesignationSyntaxWrapper
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‎StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp7/Lightup/DiscardDesignationSyntaxWrapperTests.cs‎

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// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
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// Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
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namespace StyleCop.Analyzers.Test.CSharp7.Lightup
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{
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using System;
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.CSharp;
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using StyleCop.Analyzers.Helpers;
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using StyleCop.Analyzers.Lightup;
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using Xunit;
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public class DiscardDesignationSyntaxWrapperTests
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{
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[Fact]
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public void TestNull()
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{
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var syntaxNode = default(SyntaxNode);
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var discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)syntaxNode;
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Assert.Null(discardDesignationSyntax.SyntaxNode);
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Assert.Throws<NullReferenceException>(() => discardDesignationSyntax.UnderscoreToken);
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}
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[Fact]
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public void TestUnderscoreToken()
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{
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var syntaxNode = SyntaxFactory.DiscardDesignation();
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Assert.True(syntaxNode.IsKind(SyntaxKind.DiscardDesignation));
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Assert.True(syntaxNode.IsKind(SyntaxKindEx.DiscardDesignation));
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var discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)syntaxNode;
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Assert.Same(syntaxNode, discardDesignationSyntax.SyntaxNode);
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Assert.Equal(syntaxNode.UnderscoreToken, discardDesignationSyntax.UnderscoreToken);
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discardDesignationSyntax = discardDesignationSyntax.WithUnderscoreToken(SpacingExtensions.WithoutTrivia(SyntaxFactory.Token(SyntaxKind.UnderscoreToken)));
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Assert.NotNull(discardDesignationSyntax.SyntaxNode);
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Assert.NotSame(syntaxNode, discardDesignationSyntax.SyntaxNode);
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Assert.NotEqual(syntaxNode.UnderscoreToken, discardDesignationSyntax.UnderscoreToken);
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}
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[Fact]
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public void TestIsInstance()
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{
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Assert.False(DiscardDesignationSyntaxWrapper.IsInstance(null));
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Assert.False(DiscardDesignationSyntaxWrapper.IsInstance(SyntaxFactory.LiteralExpression(SyntaxKind.NullLiteralExpression)));
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var syntaxNode = SyntaxFactory.DiscardDesignation();
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Assert.True(DiscardDesignationSyntaxWrapper.IsInstance(syntaxNode));
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}
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[Fact]
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public void TestConversionsNull()
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{
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var syntaxNode = default(SyntaxNode);
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var discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)syntaxNode;
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VariableDesignationSyntaxWrapper variableDesignationSyntax = discardDesignationSyntax;
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Assert.Null(variableDesignationSyntax.SyntaxNode);
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discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)variableDesignationSyntax;
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Assert.Null(discardDesignationSyntax.SyntaxNode);
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SyntaxNode syntax = discardDesignationSyntax;
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Assert.Null(syntax);
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}
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[Fact]
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public void TestConversions()
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{
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var syntaxNode = SyntaxFactory.DiscardDesignation();
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var discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)syntaxNode;
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VariableDesignationSyntaxWrapper variableDesignationSyntax = discardDesignationSyntax;
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Assert.Same(syntaxNode, variableDesignationSyntax.SyntaxNode);
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discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)variableDesignationSyntax;
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Assert.Same(syntaxNode, discardDesignationSyntax.SyntaxNode);
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SyntaxNode syntax = discardDesignationSyntax;
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Assert.Same(syntaxNode, syntax);
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}
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[Fact]
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public void TestInvalidConversion()
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{
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var syntaxNode = SyntaxFactory.LiteralExpression(SyntaxKind.NullLiteralExpression);
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Assert.Throws<InvalidCastException>(() => (DiscardDesignationSyntaxWrapper)syntaxNode);
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}
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}
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}

‎StyleCop.Analyzers/StyleCop.Analyzers.Test.CSharp7/StyleCop.Analyzers.Test.CSharp7.csproj‎

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<Compile Include="Lightup\ConstructorDeclarationSyntaxExtensionsTests.cs" />
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<Compile Include="Lightup\DeclarationPatternSyntaxWrapperTests.cs" />
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<Compile Include="Lightup\DestructorDeclarationSyntaxExtensionsTests.cs" />
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<Compile Include="Lightup\DiscardDesignationSyntaxWrapperTests.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>

‎StyleCop.Analyzers/StyleCop.Analyzers.Test/Lightup/DiscardDesignationSyntaxWrapperTests.cs‎

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// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved.
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// Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information.
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namespace StyleCop.Analyzers.Test.Lightup
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{
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using System;
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using Microsoft.CodeAnalysis;
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using Microsoft.CodeAnalysis.CSharp;
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using StyleCop.Analyzers.Lightup;
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using Xunit;
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public class DiscardDesignationSyntaxWrapperTests
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{
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[Fact]
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public void TestNull()
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{
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var syntaxNode = default(SyntaxNode);
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var discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)syntaxNode;
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Assert.Null(discardDesignationSyntax.SyntaxNode);
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Assert.Throws<NullReferenceException>(() => discardDesignationSyntax.UnderscoreToken);
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}
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[Fact]
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public void TestIsInstance()
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{
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Assert.False(DiscardDesignationSyntaxWrapper.IsInstance(null));
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Assert.False(DiscardDesignationSyntaxWrapper.IsInstance(SyntaxFactory.LiteralExpression(SyntaxKind.NullLiteralExpression)));
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}
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[Fact]
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public void TestConversionsNull()
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{
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var syntaxNode = default(SyntaxNode);
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var discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)syntaxNode;
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VariableDesignationSyntaxWrapper variableDesignationSyntax = discardDesignationSyntax;
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Assert.Null(variableDesignationSyntax.SyntaxNode);
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discardDesignationSyntax = (DiscardDesignationSyntaxWrapper)variableDesignationSyntax;
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Assert.Null(discardDesignationSyntax.SyntaxNode);
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SyntaxNode syntax = discardDesignationSyntax;
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Assert.Null(syntax);
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}
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[Fact]
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public void TestInvalidConversion()
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{
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var syntaxNode = SyntaxFactory.LiteralExpression(SyntaxKind.NullLiteralExpression);
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Assert.Throws<InvalidCastException>(() => (DiscardDesignationSyntaxWrapper)syntaxNode);
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}
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}
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}

‎StyleCop.Analyzers/StyleCop.Analyzers.Test/StyleCop.Analyzers.Test.csproj‎

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<Compile Include="Lightup\ConstructorDeclarationSyntaxExtensionsTests.cs" />
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<Compile Include="Lightup\DeclarationPatternSyntaxWrapperTests.cs" />
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<Compile Include="Lightup\DestructorDeclarationSyntaxExtensionsTests.cs" />
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<Compile Include="Lightup\DiscardDesignationSyntaxWrapperTests.cs" />
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<Compile Include="LinqHelpers\SyntaxTriviaListEnumerableTests.cs" />
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<Compile Include="MaintainabilityRules\DebugMessagesUnitTestsBase.cs" />
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<Compile Include="MaintainabilityRules\FileMayOnlyContainTestBase.cs" />

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