TEST: Support reference testing for clang-AST

run_tests.py

@@ -17,6 +17,8 @@ def is_included(backend):
              and (specific_backends is None or backend in specific_backends) \
              and (excluded_backends is None or backend not in excluded_backends)
     show_verbose = "" if not verbose else "-v"
+    clang_ast = is_included("clang_ast")
+    parse_all_comments = is_included("parse_all_comments")
     ast = is_included("ast")
     asr = is_included("asr")
     asr_json = is_included("asr_json")
@@ -43,6 +45,19 @@ def is_included(backend):
     else:
         log.debug(f"{color(style.bold)} START TEST: {color(style.reset)} {filename}")
 
+    if clang_ast:
+        if parse_all_comments:
+            cmd = "lc --show-clang-ast --parse-all-comments {infile} -o {outfile}"
+        else:
+            cmd = "lc --show-clang-ast {infile} -o {outfile}"
+
+        run_test(
+            filename,
+            "clang_ast",
+            "lc --show-clang-ast --parse-all-comments {infile} -o {outfile}",
+            filename,
+            update_reference, extra_args)
+
     if ast:
         run_test(
             filename,