add tests

Author: a-tarasyuk

clang/test/FixIt/fixit-macro-expansion-recovery.cpp

@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -std=c++23 -fsyntax-only -verify %s
+// RUN: not %clang_cc1 -fdiagnostics-parseable-fixits -std=c++23 %s 2>&1 | FileCheck %s
+
+#define C(x) case x
+
+void t1(int a) {
+  switch (a) {
+    C(10) // expected-error {{expected ':' after 'case'}}
+  }
+}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-3]]:10-[[@LINE-3]]:10}:":"