[clang-tidy] add test with carets

Author: vbvictor

clang-tools-extra/test/clang-tidy/infrastructure/quiet-flag.cpp

@@ -1,14 +1,26 @@
-// RUN: clang-tidy -checks=-*,readability-magic-numbers %s -- 2>&1 | FileCheck %s --check-prefix=CHECK-NORMAL
-// RUN: clang-tidy -checks=-*,readability-magic-numbers -quiet %s -- 2>&1 | FileCheck %s --check-prefix=CHECK-QUIET
+// This test ensures that the --quiet flag only suppresses the "X warnings generated" 
+// message while keeping all diagnostic information including caret indicators (^).
 
-// Normal mode should show warning count
-// CHECK-NORMAL: 1 warning generated
-// CHECK-NORMAL: warning: 42 is a magic number
+// RUN: clang-tidy -checks=-*,readability-magic-numbers,clang-diagnostic-sign-compare %s -- \
+// RUN:   -Wsign-compare 2>&1 | FileCheck %s --check-prefix=CHECK-NORMAL
+// RUN: clang-tidy -checks=-*,readability-magic-numbers,clang-diagnostic-sign-compare -quiet %s -- \
+// RUN:   -Wsign-compare 2>&1 | FileCheck %s --check-prefix=CHECK-QUIET
+
+// CHECK-NORMAL: 2 warnings generated
+// CHECK-NORMAL-DAG: warning: 42 is a magic number
+// CHECK-NORMAL-DAG: {{[ ]*\^}}
+// CHECK-NORMAL-DAG: warning: comparison of integers of different signs
+// CHECK-NORMAL-DAG: {{[ ]*~ \^ ~}}
 
-// Quiet mode should suppress warning count but show diagnostic
-// CHECK-QUIET: warning: 42 is a magic number
 // CHECK-QUIET-NOT: {{[0-9]+}} warning{{s?}} generated
+// CHECK-QUIET-DAG: warning: 42 is a magic number
+// CHECK-QUIET-DAG: {{[ ]*\^}}
+// CHECK-QUIET-DAG: warning: comparison of integers of different signs
+// CHECK-QUIET-DAG: {{[ ]*~ \^ ~}}
 
 int main() {
-  int x = 42; // This will trigger readability-magic-numbers
+  const int CONST_VAL = 10;
+  int x = 42; // trigger 'readability-magic-numbers' with caret: ^
+  unsigned int y = CONST_VAL;
+  return x < y; // trigger 'clang-diagnostic-sign-compare' with caret: ^
 }