Disable SA1126 (PrefixCallsCorrectly)

Fixes DotNetAnalyzers#59

StyleCop.Analyzers/StyleCop.Analyzers.Test/ReadabilityRules/SA1126UnitTests.cs

@@ -0,0 +1,40 @@
+namespace StyleCop.Analyzers.Test.ReadabilityRules
+{
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Threading;
+    using System.Threading.Tasks;
+    using Microsoft.CodeAnalysis;
+    using Microsoft.CodeAnalysis.Diagnostics;
+    using StyleCop.Analyzers.ReadabilityRules;
+    using TestHelper;
+    using Xunit;
+
+    /// <summary>
+    /// This class contains unit tests for <see cref="SA1126PrefixCallsCorrectly"/>.
+    /// </summary>
+    public class SA1126UnitTests : DiagnosticVerifier
+    {
+        [Fact]
+        public async Task TestEmptySourceAsync()
+        {
+            var testCode = string.Empty;
+            await this.VerifyCSharpDiagnosticAsync(testCode, EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false);
+        }
+
+        [Fact]
+        public void TestDisabledByDefaultAndNotConfigurable()
+        {
+            var analyzer = this.GetCSharpDiagnosticAnalyzers().Single();
+            Assert.Equal(1, analyzer.SupportedDiagnostics.Length);
+            Assert.False(analyzer.SupportedDiagnostics[0].IsEnabledByDefault);
+            Assert.Contains(WellKnownDiagnosticTags.NotConfigurable, analyzer.SupportedDiagnostics[0].CustomTags);
+        }
+
+        /// <inheritdoc/>
+        protected override IEnumerable<DiagnosticAnalyzer> GetCSharpDiagnosticAnalyzers()
+        {
+            yield return new SA1126PrefixCallsCorrectly();
+        }
+    }
+}

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

@@ -273,6 +273,7 @@
     <Compile Include="ReadabilityRules\SA1123UnitTests.cs" />
     <Compile Include="ReadabilityRules\SA1124UnitTests.cs" />
     <Compile Include="ReadabilityRules\SA1125UnitTests.cs" />
+    <Compile Include="ReadabilityRules\SA1126UnitTests.cs" />
     <Compile Include="SpacingRules\NumberSignSpacingTestBase.cs" />
     <Compile Include="SpacingRules\SA1000UnitTests.cs" />
     <Compile Include="SpacingRules\SA1001UnitTests.cs" />

StyleCop.Analyzers/StyleCop.Analyzers/ReadabilityRules/SA1126PrefixCallsCorrectly.cs

@@ -9,6 +9,8 @@
     /// prefix to indicate the intended method call, within a C# code file.
     /// </summary>
     /// <remarks>
+    /// <para>This diagnostic is not implemented in StyleCopAnalyzers.</para>
+    ///
     /// <para>A violation of this rule occurs whenever the code contains a call to a member which is not prefixed
     /// correctly.</para>
     ///
@@ -28,7 +30,7 @@ public class SA1126PrefixCallsCorrectly : DiagnosticAnalyzer
         private static readonly string HelpLink = "http://www.stylecop.com/docs/SA1126.html";
 
         private static readonly DiagnosticDescriptor Descriptor =
-            new DiagnosticDescriptor(DiagnosticId, Title, MessageFormat, AnalyzerCategory.ReadabilityRules, DiagnosticSeverity.Warning, AnalyzerConstants.DisabledNoTests, Description, HelpLink);
+            new DiagnosticDescriptor(DiagnosticId, Title, MessageFormat, AnalyzerCategory.ReadabilityRules, DiagnosticSeverity.Warning, AnalyzerConstants.DisabledByDefault, Description, HelpLink, WellKnownDiagnosticTags.NotConfigurable);
 
         private static readonly ImmutableArray<DiagnosticDescriptor> SupportedDiagnosticsValue =
             ImmutableArray.Create(Descriptor);
@@ -45,7 +47,7 @@ public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics
         /// <inheritdoc/>
         public override void Initialize(AnalysisContext context)
         {
-            // TODO: Implement analysis
+            // This diagnostic is not implemented (by design) in StyleCopAnalyzers.
         }
     }
 }