Add test for Disable clang-diagnostic-error checker #4325

Test if clang-diagnostic-error checker is disabled in cli.

analyzer/tests/functional/analyze/test_analyze.py

@@ -563,7 +563,7 @@ def test_relative_include_paths(self):
 
     def test_tidyargs_saargs(self):
         """
-        Test tidyargs and saargs config files
+        Test tidyargs and saargs config files & Clang Tidy config
         """
         build_json = os.path.join(self.test_workspace, "build_extra_args.json")
         report_dir = os.path.join(self.test_workspace, "reports_extra_args")
@@ -1316,6 +1316,22 @@ def test_invalid_compilation_database(self):
 
         self.assertEqual(process.returncode, 1)
 
+    def test_disable_error_checker_tidy(self):
+        """Make sure clang-diagnostic-error checker is disabled (PR #4325)"""
+        cmd = [self._codechecker_cmd, "check", "-l", self.__get_build_json(),
+               '--enable', 'clang-diagnostic-error']
+
+        process = subprocess.Popen(
+            cmd,
+            stdout=subprocess.PIPE,
+            stderr=subprocess.PIPE,
+            cwd=self.test_dir,
+            encoding="utf-8",
+            errors="ignore")
+        out, _ = process.communicate()
+
+        self.assertNotIn("error", out)
+
     def test_compilation_db_relative_file_path(self):
         """
         Test relative path in compilation database.