Add tests for the non-generic ValueTask return type

Author: sharwell

AsyncUsageAnalyzers/AsyncUsageAnalyzers.Test/Naming/AvoidAsyncSuffixUnitTests.cs

@@ -346,6 +346,21 @@ public async Task TestReturnValueTaskAsync()
             string testCode = @"
 using System.Threading.Tasks;
 class ClassName
+{
+    ValueTask FirstMethod() { return default(ValueTask); }
+    ValueTask SecondMethodAsync() { return default(ValueTask); }
+}
+";
+
+            await this.VerifyCSharpDiagnosticAsync(testCode, EmptyDiagnosticResults, CancellationToken.None).ConfigureAwait(false);
+        }
+
+        [Fact]
+        public async Task TestReturnGenericValueTaskAsync()
+        {
+            string testCode = @"
+using System.Threading.Tasks;
+class ClassName
 {
     ValueTask<int> FirstMethod() { return new ValueTask<int>(3); }
     ValueTask<int> SecondMethodAsync() { return new ValueTask<int>(3); }

AsyncUsageAnalyzers/AsyncUsageAnalyzers.Test/Naming/UseAsyncSuffixUnitTests.cs

@@ -346,6 +346,32 @@ class ClassName
             await this.VerifyCSharpFixAsync(testCode, fixedCode, cancellationToken: CancellationToken.None).ConfigureAwait(false);
         }
 
+        [Fact]
+        public async Task TestReturnValueTaskAsync()
+        {
+            string testCode = @"
+using System.Threading.Tasks;
+class ClassName
+{
+    ValueTask FirstMethod() { return default(ValueTask); }
+    ValueTask SecondMethodAsync() { return default(ValueTask); }
+}
+";
+            string fixedCode = @"
+using System.Threading.Tasks;
+class ClassName
+{
+    ValueTask FirstMethodAsync() { return default(ValueTask); }
+    ValueTask SecondMethodAsync() { return default(ValueTask); }
+}
+";
+
+            DiagnosticResult expected = this.CSharpDiagnostic().WithArguments("FirstMethod").WithLocation(5, 15);
+            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);
+        }
+
         [Fact]
         public async Task TestReturnGenericValueTaskAsync()
         {