Add .WithAdditionalAnnotations(Simplifier.Annotation) on code fix

analyzers/src/SonarAnalyzer.CSharp/Rules/BooleanLiteralUnnecessaryCodeFix.cs

@@ -20,6 +20,7 @@
 
 using Microsoft.CodeAnalysis.CodeFixes;
 using Microsoft.CodeAnalysis.Formatting;
+using Microsoft.CodeAnalysis.Simplification;
 
 namespace SonarAnalyzer.Rules.CSharp
 {
@@ -139,7 +140,7 @@ private static void RegisterBinaryExpressionRemoval(SonarCodeFixContext context,
                 Title,
                 c =>
                 {
-                    var newExpression = GetNegatedExpression(otherNode);
+                    var newExpression = GetNegatedExpression(otherNode).WithAdditionalAnnotations(Simplifier.Annotation);
                     var newRoot = root.ReplaceNode(binaryParent, newExpression
                         .WithAdditionalAnnotations(Formatter.Annotation));
 
@@ -171,7 +172,7 @@ private static void RegisterBinaryExpressionReplacement(SonarCodeFixContext cont
                 Title,
                 c =>
                 {
-                    var keepThisNode = FindNodeToKeep(binary);
+                    var keepThisNode = FindNodeToKeep(binary).WithAdditionalAnnotations(Simplifier.Annotation);
                     var newRoot = root.ReplaceNode(syntaxNode, keepThisNode
                         .WithAdditionalAnnotations(Formatter.Annotation));
                     return Task.FromResult(context.Document.WithSyntaxRoot(newRoot));

analyzers/tests/SonarAnalyzer.UnitTest/TestCases/BooleanLiteralUnnecessary.Fixed.cs

@@ -34,10 +34,8 @@ public BooleanLiteralUnnecessary(bool a, bool b, bool? c, Item item)
             var x = false;                  // Fixed
             x = true;              // Fixed
             x = true;                     // Fixed
-            x = (a)                // Fixed
-;                    // Fixed
-            x = (!a)                // Fixed
-;                    // Fixed
+            x = a;                    // Fixed
+            x = !a;                    // Fixed
 
             x = a;                // Fixed
             x = a;                  // Fixed