test(c): skip tests is dependencies missing

Author: mbdevpl

test/test_c.py

@@ -6,9 +6,15 @@
 import timing
 import typed_astunparse
 
-from transpyle.general.code_reader import CodeReader
-from transpyle.c.parser import C99Parser
-from transpyle.c.ast_generalizer import CAstGeneralizer
+try:
+    from transpyle.c.ast_generalizer import CAstGeneralizer
+except ImportError:
+    pass
+try:
+    from transpyle.c.parser import C99Parser
+except ImportError:
+    pass
+from transpyle.general import AstGeneralizer, CodeReader, Parser
 
 from .common import basic_check_c_ast, basic_check_python_ast, execute_on_language_examples
 
@@ -17,6 +23,7 @@
 _TIME = timing.get_timing_group(__name__)
 
 
+@unittest.skipIf(Parser.find('C') is None, 'skipping due to missing C language support')
 class ParserTests(unittest.TestCase):
 
     @execute_on_language_examples('c11')
@@ -30,6 +37,7 @@ def test_parse_examples(self, input_path):
         _LOG.info('parsed "%s" in %fs', input_path, timer.elapsed)
 
 
+@unittest.skipIf(AstGeneralizer.find('C') is None, 'skipping due to missing C language support')
 class AstGeneralizerTests(unittest.TestCase):
 
     @execute_on_language_examples('c11')