Add unit tests to improve coverage in SA1000 (KeywordsMustBeSpacedCorrectly)

Author: sharwell

StyleCop.Analyzers/StyleCop.Analyzers.Test/SpacingRules/SA1000UnitTests.cs

@@ -6,6 +6,7 @@ namespace StyleCop.Analyzers.Test.SpacingRules
     using System.Collections.Generic;
     using System.Threading;
     using System.Threading.Tasks;
+    using Microsoft.CodeAnalysis;
     using Microsoft.CodeAnalysis.CodeFixes;
     using Microsoft.CodeAnalysis.Diagnostics;
     using StyleCop.Analyzers.SpacingRules;
@@ -836,6 +837,65 @@ public async Task TestGotoCaseStatementAsync()
             await this.TestKeywordStatementAsync(statementWithoutSpace, expected, statementWithSpace).ConfigureAwait(false);
         }
 
+        [Fact]
+        public async Task TestMissingSelectTokenAsync()
+        {
+            string testCode = @"
+class ClassName
+{
+    void MethodName()
+    {
+        var result = from x in new int[0];
+    }
+}
+";
+
+            DiagnosticResult[] expected =
+            {
+                new DiagnosticResult
+                {
+                    Id = "CS0742",
+                    Severity = DiagnosticSeverity.Error,
+                    Message = "A query body must end with a select clause or a group clause",
+                    Locations = new[] { new DiagnosticResultLocation("Test0.cs", 6, 42) }
+                }
+            };
+
+            await this.VerifyCSharpDiagnosticAsync(testCode, expected, CancellationToken.None).ConfigureAwait(false);
+        }
+
+        [Fact]
+        public async Task TestTrailingCommentAsync()
+        {
+            string testCode = @"
+class ClassName
+{
+    void MethodName()
+    {
+        if/*comment*/ (true)
+        {
+        }
+    }
+}
+";
+            string fixedCode = @"
+class ClassName
+{
+    void MethodName()
+    {
+        if /*comment*/ (true)
+        {
+        }
+    }
+}
+";
+
+            DiagnosticResult expected = this.CSharpDiagnostic().WithArguments("if", string.Empty, "followed").WithLocation(6, 9);
+            await this.VerifyCSharpDiagnosticAsync(testCode, expected, CancellationToken.None).ConfigureAwait(false);
+            await this.VerifyCSharpDiagnosticAsync(fixedCode, EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false);
+            await this.VerifyCSharpFixAsync(testCode, fixedCode, cancellationToken: CancellationToken.None).ConfigureAwait(false);
+        }
+
         protected override IEnumerable<DiagnosticAnalyzer> GetCSharpDiagnosticAnalyzers()
         {
             yield return new SA1000KeywordsMustBeSpacedCorrectly();