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| 1 | +// Copyright (c) Tunnel Vision Laboratories, LLC. All Rights Reserved. |
| 2 | +// Licensed under the Apache License, Version 2.0. See LICENSE in the project root for license information. |
| 3 | + |
| 4 | +namespace StyleCop.Analyzers.Test.ReadabilityRules |
| 5 | +{ |
| 6 | + using System.Collections.Generic; |
| 7 | + using System.Threading; |
| 8 | + using System.Threading.Tasks; |
| 9 | + using Microsoft.CodeAnalysis.Diagnostics; |
| 10 | + using StyleCop.Analyzers.ReadabilityRules; |
| 11 | + using TestHelper; |
| 12 | + using Xunit; |
| 13 | + |
| 14 | + public class SA1117UnitTests : DiagnosticVerifier |
| 15 | + { |
| 16 | + public static IEnumerable<object[]> GetTestDeclarations(string delimiter) |
| 17 | + { |
| 18 | + yield return new object[] { $"public Foo(int a, int b,{delimiter} string s) {{ }}" }; |
| 19 | + yield return new object[] { $"public object Bar(int a, int b,{delimiter} string s) => null;" }; |
| 20 | + yield return new object[] { $"public object this[int a, int b,{delimiter} string s] => null;" }; |
| 21 | + yield return new object[] { $"public delegate void Bar(int a, int b,{delimiter} string s);" }; |
| 22 | + } |
| 23 | + |
| 24 | + public static IEnumerable<object[]> GetTestConstructorInitializers(string delimiter) |
| 25 | + { |
| 26 | + yield return new object[] { $"this(42, 43, {delimiter} \"hello\")" }; |
| 27 | + yield return new object[] { $"base(42, 43, {delimiter} \"hello\")" }; |
| 28 | + } |
| 29 | + |
| 30 | + public static IEnumerable<object[]> GetTestExpressions(string delimiter) |
| 31 | + { |
| 32 | + yield return new object[] { $"Bar(1, 2, {delimiter} 2)", 13 }; |
| 33 | + yield return new object[] { $"System.Action<int, int, int> func = (int x, int y, {delimiter} int z) => Bar(x, y, z)", 41 }; |
| 34 | + yield return new object[] { $"System.Action<int, int, int> func = delegate(int x, int y, {delimiter} int z) {{ Bar(x, y, z); }}", 49 }; |
| 35 | + yield return new object[] { $"new System.DateTime(2015, 9, {delimiter} 14)", 20 }; |
| 36 | + yield return new object[] { $"var arr = new string[2, 2, {delimiter} 2];", 30 }; |
| 37 | + yield return new object[] { $"char cc = (new char[3, 3, 3])[2, 2,{delimiter} 2];", 36 }; |
| 38 | + yield return new object[] { $"char? c = (new char[3, 3, 3])?[2, 2,{delimiter} 2];", 37 }; |
| 39 | + yield return new object[] { $"long ll = this[2, 2,{delimiter} 2];", 24 }; |
| 40 | + } |
| 41 | + |
| 42 | + public static IEnumerable<object[]> ValidTestExpressions() |
| 43 | + { |
| 44 | + yield return new object[] { $"System.Action func = () => Bar(0, 2, 3)", 0 }; |
| 45 | + yield return new object[] { $"System.Action<int> func = x => Bar(x, 2, 3)", 0 }; |
| 46 | + yield return new object[] { $"System.Action func = delegate {{ Bar(0, 0, 0); }}", 0 }; |
| 47 | + yield return new object[] { "var weird = new int[10][,,,];", 0 }; |
| 48 | + } |
| 49 | + |
| 50 | + public static IEnumerable<object[]> ValidTestDeclarations() |
| 51 | + { |
| 52 | + yield return new object[] |
| 53 | + { |
| 54 | + $@"public Foo( |
| 55 | + int a, int b, string s) {{ }}" |
| 56 | + }; |
| 57 | + yield return new object[] |
| 58 | + { |
| 59 | + $@"public Foo( |
| 60 | + int a, |
| 61 | + int b, |
| 62 | + string s) {{ }}" |
| 63 | + }; |
| 64 | + } |
| 65 | + |
| 66 | + [Theory] |
| 67 | + [MemberData(nameof(GetTestDeclarations), "")] |
| 68 | + [MemberData(nameof(ValidTestDeclarations))] |
| 69 | + public async Task TestValidDeclarationAsync(string declaration) |
| 70 | + { |
| 71 | + var testCode = $@" |
| 72 | +class Foo |
| 73 | +{{ |
| 74 | + {declaration} |
| 75 | +}}"; |
| 76 | + await this.VerifyCSharpDiagnosticAsync(testCode, EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false); |
| 77 | + } |
| 78 | + |
| 79 | + [Theory] |
| 80 | + [MemberData(nameof(GetTestDeclarations), "\r\n")] |
| 81 | + public async Task TestInvalidDeclarationAsync(string declaration) |
| 82 | + { |
| 83 | + var testCode = $@" |
| 84 | +class Foo |
| 85 | +{{ |
| 86 | + {declaration} |
| 87 | +}}"; |
| 88 | + |
| 89 | + DiagnosticResult expected = this.CSharpDiagnostic().WithLocation(5, 2); |
| 90 | + await this.VerifyCSharpDiagnosticAsync(testCode, expected, CancellationToken.None).ConfigureAwait(false); |
| 91 | + } |
| 92 | + |
| 93 | + [Theory] |
| 94 | + [MemberData(nameof(GetTestConstructorInitializers), "")] |
| 95 | + public async Task TestValidConstructorInitializerAsync(string initializer) |
| 96 | + { |
| 97 | + var testCode = $@" |
| 98 | +class Base |
| 99 | +{{ |
| 100 | + public Base(int a, int b, string s) |
| 101 | + {{ |
| 102 | + }} |
| 103 | +}} |
| 104 | +
|
| 105 | +class Derived : Base |
| 106 | +{{ |
| 107 | + public Derived() |
| 108 | + : {initializer} |
| 109 | + {{ |
| 110 | + }} |
| 111 | +
|
| 112 | + public Derived(int i, int j, string z) |
| 113 | + : base(i, j, z) |
| 114 | + {{ |
| 115 | + }} |
| 116 | +}}"; |
| 117 | + |
| 118 | + await this.VerifyCSharpDiagnosticAsync(testCode, EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false); |
| 119 | + } |
| 120 | + |
| 121 | + [Theory] |
| 122 | + [MemberData(nameof(GetTestConstructorInitializers), "\r\n")] |
| 123 | + public async Task TestInvalidConstructorInitializerAsync(string initializer) |
| 124 | + { |
| 125 | + var testCode = $@" |
| 126 | +class Base |
| 127 | +{{ |
| 128 | + public Base(int a, int b, string s) |
| 129 | + {{ |
| 130 | + }} |
| 131 | +}} |
| 132 | +
|
| 133 | +class Derived : Base |
| 134 | +{{ |
| 135 | + public Derived() |
| 136 | + : {initializer} |
| 137 | + {{ |
| 138 | + }} |
| 139 | +
|
| 140 | + public Derived(int i, int j, string z) |
| 141 | + : base(i, j, z) |
| 142 | + {{ |
| 143 | + }} |
| 144 | +}}"; |
| 145 | + |
| 146 | + DiagnosticResult expected = this.CSharpDiagnostic().WithLocation(13, 2); |
| 147 | + await this.VerifyCSharpDiagnosticAsync(testCode, expected, CancellationToken.None).ConfigureAwait(false); |
| 148 | + } |
| 149 | + |
| 150 | + [Theory] |
| 151 | + [MemberData(nameof(GetTestExpressions), "")] |
| 152 | + [MemberData(nameof(ValidTestExpressions))] |
| 153 | + public async Task TestValidExpressionAsync(string expression, int column) |
| 154 | + { |
| 155 | + var testCode = $@" |
| 156 | +class Foo |
| 157 | +{{ |
| 158 | + public void Bar(int i, int j, int k) |
| 159 | + {{ |
| 160 | + }} |
| 161 | +
|
| 162 | + public void Baz() |
| 163 | + {{ |
| 164 | + {expression}; |
| 165 | + }} |
| 166 | +
|
| 167 | + public long this[int a, int b, int s] => a + b + s; |
| 168 | +}}"; |
| 169 | + |
| 170 | + await this.VerifyCSharpDiagnosticAsync(testCode, EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false); |
| 171 | + } |
| 172 | + |
| 173 | + [Theory] |
| 174 | + [MemberData(nameof(GetTestExpressions), "\r\n")] |
| 175 | + public async Task TestInvalidExpressionAsync(string expression, int column) |
| 176 | + { |
| 177 | + var testCode = $@" |
| 178 | +class Foo |
| 179 | +{{ |
| 180 | + public void Bar(int i, int j, int k) |
| 181 | + {{ |
| 182 | + }} |
| 183 | +
|
| 184 | + public void Baz() |
| 185 | + {{ |
| 186 | + {expression}; |
| 187 | + }} |
| 188 | +
|
| 189 | + public long this[int a, int b, int s] => a + b + s; |
| 190 | +}}"; |
| 191 | + |
| 192 | + DiagnosticResult expected = this.CSharpDiagnostic().WithLocation(11, 2); |
| 193 | + await this.VerifyCSharpDiagnosticAsync(testCode, expected, CancellationToken.None).ConfigureAwait(false); |
| 194 | + } |
| 195 | + |
| 196 | + [Fact] |
| 197 | + public async Task TestValidAttributeAsync() |
| 198 | + { |
| 199 | + var testCode = @" |
| 200 | +[System.AttributeUsage(System.AttributeTargets.Class)] |
| 201 | +public class MyAttribute : System.Attribute |
| 202 | +{ |
| 203 | + public MyAttribute(int a, int b, int c) |
| 204 | + { |
| 205 | + } |
| 206 | +} |
| 207 | +
|
| 208 | +[MyAttribute(1, 2, 3)] |
| 209 | +class Foo |
| 210 | +{ |
| 211 | +} |
| 212 | +
|
| 213 | +// This is a regression test for https://github.com/DotNetAnalyzers/StyleCopAnalyzers/issues/1211 |
| 214 | +[System.Obsolete] |
| 215 | +class ObsoleteType |
| 216 | +{ |
| 217 | +}"; |
| 218 | + |
| 219 | + await this.VerifyCSharpDiagnosticAsync(testCode, EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false); |
| 220 | + } |
| 221 | + |
| 222 | + [Fact] |
| 223 | + public async Task TestInvalidAttributeAsync() |
| 224 | + { |
| 225 | + var testCode = @" |
| 226 | +[System.AttributeUsage(System.AttributeTargets.Class)] |
| 227 | +public class MyAttribute : System.Attribute |
| 228 | +{ |
| 229 | + public MyAttribute(int a, int b, int c) |
| 230 | + { |
| 231 | + } |
| 232 | +} |
| 233 | +
|
| 234 | +[MyAttribute( |
| 235 | + 1, |
| 236 | + 2, 3)] |
| 237 | +class Foo |
| 238 | +{ |
| 239 | +}"; |
| 240 | + |
| 241 | + DiagnosticResult expected = this.CSharpDiagnostic().WithLocation(12, 8); |
| 242 | + await this.VerifyCSharpDiagnosticAsync(testCode, expected, CancellationToken.None).ConfigureAwait(false); |
| 243 | + } |
| 244 | + |
| 245 | + /// <inheritdoc/> |
| 246 | + protected override IEnumerable<DiagnosticAnalyzer> GetCSharpDiagnosticAnalyzers() |
| 247 | + { |
| 248 | + yield return new SA1117ParametersMustBeOnSameLineOrSeparateLines(); |
| 249 | + } |
| 250 | + } |
| 251 | +} |
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