Add conditional

src/EditorFeatures/CSharpTest/UsePatternCombinators/CSharpUsePatternCombinatorsDiagnosticAnalyzerTests.cs

@@ -41,6 +41,7 @@ class C
     void Argument3() => Test(_ => EXPRESSION);
     void For() { for (; EXPRESSION; ); }
     void Local() { var local = EXPRESSION; }
+    void Conditional() { _ = EXPRESSION ? true : false; }
     void Assignment() { _ = EXPRESSION; }
     void Do() { do ; while (EXPRESSION); }
     void While() { while (EXPRESSION) ; }

src/Features/CSharp/Portable/UsePatternCombinators/CSharpUsePatternCombinatorsDiagnosticAnalyzer.cs

@@ -30,6 +30,7 @@ public CSharpUsePatternCombinatorsDiagnosticAnalyzer()
         protected override void InitializeWorker(AnalysisContext context)
             => context.RegisterSyntaxNodeAction(AnalyzeNode,
                 SyntaxKind.SwitchExpressionArm,
+                SyntaxKind.ConditionalExpression,
                 SyntaxKind.ForStatement,
                 SyntaxKind.EqualsValueClause,
                 SyntaxKind.IfStatement,
@@ -38,8 +39,8 @@ protected override void InitializeWorker(AnalysisContext context)
                 SyntaxKind.DoStatement,
                 SyntaxKind.ReturnStatement,
                 SyntaxKind.YieldReturnStatement,
-                SyntaxKind.SimpleAssignmentExpression,
                 SyntaxKind.ArrowExpressionClause,
+                SyntaxKind.SimpleAssignmentExpression,
                 SyntaxKind.SimpleLambdaExpression,
                 SyntaxKind.ParenthesizedLambdaExpression,
                 SyntaxKind.Argument);
@@ -48,6 +49,7 @@ protected override void InitializeWorker(AnalysisContext context)
             => node switch
             {
                 SwitchExpressionArmSyntax n => n.Expression,
+                ConditionalExpressionSyntax n => n.Condition,
                 ForStatementSyntax n => n.Condition,
                 EqualsValueClauseSyntax n => n.Value,
                 IfStatementSyntax n => n.Condition,