[include-cleaner] testing display warnings of deprecated commands

Author: hulxv

clang-tools-extra/include-cleaner/test/tool.cpp

@@ -58,3 +58,20 @@ int x = foo();
 //        RUN: FileCheck --match-full-lines --check-prefix=EDIT3 %s < %t.cpp
 //      EDIT3: #include "foo.h"
 //  EDIT3-NOT: {{^}}#include "foobar.h"{{$}}
+
+//       RUN: clang-include-cleaner -insert=false -print=changes %s -- -I%S/Inputs/ 2>&1 | \
+//       RUN: FileCheck --check-prefix=DEPRECATED-INSERT %s
+// DEPRECATED-INSERT: [WARNING] -insert is deprecated in favor of `-disable-insert`
+// DEPRECATED-INSERT: The old flag was confusing since it suggested that inserts
+// DEPRECATED-INSERT: were disabled by default, when they were actually enabled
+
+//       RUN: clang-include-cleaner -remove=false -print=changes %s -- -I%S/Inputs/ 2>&1 | \
+//       RUN: FileCheck --check-prefix=DEPRECATED-REMOVE %s
+// DEPRECATED-REMOVE: [WARNING] -remove is deprecated in favor of `-disable-remove`
+// DEPRECATED-REMOVE: The old flag was confusing since it suggested that removes
+// DEPRECATED-REMOVE: were disabled by default, when they were actually enabled
+
+//       RUN: clang-include-cleaner -insert=false -remove=false -print=changes %s -- -I%S/Inputs/ 2>&1 | \
+//       RUN: FileCheck --check-prefix=DEPRECATED-BOTH %s
+// DEPRECATED-BOTH: [WARNING] -insert is deprecated in favor of `-disable-insert`
+// DEPRECATED-BOTH: [WARNING] -remove is deprecated in favor of `-disable-remove`