[tests] add unit tests for .spec parsers

molecule/settings.py

@@ -146,7 +146,11 @@ class SpecPreprocessor:
                 if split_line:
                     expander = self.__builtin_expanders.get(split_line[0])
                     if expander is not None:
-                        line = expander(line)
+                        try:
+                            line = expander(line)
+                        except RuntimeError as err:
+                            raise SpecPreprocessor.PreprocessorError(
+                                "invalid preprocessor line: %s" % (err,))
                 lines += line
 
         return lines

tests/run

@@ -7,11 +7,11 @@ import unittest
 sys.path.insert(0,'.')
 sys.path.insert(0,'..')
 
-from tests import version, utils
+from tests import version, utils, specs, parsers
 rc = 0
 
 # Add to the list the module to test
-mods = [version, utils]
+mods = [version, utils, specs, parsers]
 
 tests = []
 for mod in mods:

tests/specs.py

@@ -18,6 +18,8 @@ class SpecsTest(unittest.TestCase):
         sys.stdout.write("%s ran\n" % (self,))
         sys.stdout.flush()
 
+    
+
 if __name__ == '__main__':
     unittest.main()
     raise SystemExit(0)

tests/utils.py

@@ -5,6 +5,7 @@ sys.path.insert(0,'.')
 sys.path.insert(0,'..')
 import unittest
 import tempfile
+
 from molecule.compat import get_stringtype
 from molecule.utils import md5sum, copy_dir, get_random_number, \
     remove_path_sandbox, remove_path, mkdtemp, empty_dir, \

tests/version.py

@@ -3,6 +3,7 @@ import sys
 sys.path.insert(0,'.')
 sys.path.insert(0,'..')
 import unittest
+
 from molecule.compat import get_stringtype
 
 class VersionTest(unittest.TestCase):