Add tests for additional edge cases

Author: sharwell

DocumentationAnalyzers/DocumentationAnalyzers.Test/PortabilityRules/DOC207UnitTests.cs

@@ -83,6 +83,40 @@ public async Task TestEmptyAndFullElementsValidatedAsync()
 class TestClass
 {
 }
+";
+
+            await Verify.VerifyAnalyzerAsync(testCode);
+        }
+
+        [Fact]
+        public async Task TestOtherAttributesIgnoredAsync()
+        {
+            var testCode = @"
+/// <summary>
+/// <see Langword=""not a keyword""/>
+/// <see x:langword=""not a keyword""/>
+/// <see name=""not a keyword""/>
+/// <see cref=""System.String""/>
+/// </summary>
+class TestClass
+{
+}
+";
+
+            await Verify.VerifyAnalyzerAsync(testCode);
+        }
+
+        [Fact]
+        public async Task TestOtherElementsIgnoredAsync()
+        {
+            var testCode = @"
+/// <summary>
+/// <p:see langword=""not a keyword""/>
+/// </summary>
+/// 
+class TestClass
+{
+}
 ";
 
             await Verify.VerifyAnalyzerAsync(testCode);

DocumentationAnalyzers/DocumentationAnalyzers/PortabilityRules/DOC207UseSeeLangwordCorrectly.cs

@@ -59,13 +59,9 @@ private static void HandleXmlNodeSyntax(SyntaxNodeAnalysisContext context)
             {
                 attributes = xmlEmptyElement.Attributes;
             }
-            else if (xmlNodeSyntax is XmlElementSyntax xmlElement)
-            {
-                attributes = xmlElement.StartTag.Attributes;
-            }
             else
             {
-                return;
+                attributes = ((XmlElementSyntax)xmlNodeSyntax).StartTag.Attributes;
             }
 
             foreach (var attribute in attributes)
@@ -80,12 +76,7 @@ private static void HandleXmlNodeSyntax(SyntaxNodeAnalysisContext context)
                     continue;
                 }
 
-                if (!(attribute is XmlTextAttributeSyntax xmlTextAttribute))
-                {
-                    continue;
-                }
-
-                var text = xmlTextAttribute.TextTokens;
+                var text = ((XmlTextAttributeSyntax)attribute).TextTokens;
                 string valueText;
                 if (text.Count == 1)
                 {