Raise clearer error on morphology parse errors

2 files changed, 12 insertions, 2 deletions

diff --git a/morphlib/morphologyfactory.py b/morphlib/morphologyfactory.py
index 925829e9..dd884865 100644
--- a/morphlib/morphologyfactory.py
+++ b/morphlib/morphologyfactory.py
@@ -49,8 +49,11 @@ class MorphologyFactory(object):
         except:
             text = self._autodetect_text(reponame, sha1, filename)
 
-        morphology = morphlib.morph2.Morphology(text)
-        
+        try:
+            morphology = morphlib.morph2.Morphology(text)
+        except ValueError as e:
+            raise morphlib.Error("Error parsing %s: %s" % (filename, e.message))
+
         method_name = '_check_and_tweak_%s' % morphology['kind']
         if hasattr(self, method_name):
             method = getattr(self, method_name)
diff --git a/morphlib/morphologyfactory_tests.py b/morphlib/morphologyfactory_tests.py
index cc45bb21..06cfc5c3 100644
--- a/morphlib/morphologyfactory_tests.py
+++ b/morphlib/morphologyfactory_tests.py
@@ -63,6 +63,9 @@ class FakeLocalRepo(object):
                 "system-kind": "%(system_kind)s",
                 "arch": "%(arch)s"
             }''',
+        'parse-error.morph': '''{
+                "name"
+            }''',
     }
 
     def __init__(self):
@@ -230,3 +233,7 @@ class MorphologyFactoryTests(unittest.TestCase):
         self.assertRaises(morphlib.Error, self.mf.get_morphology,
                           'reponame', 'sha1', 'system.morph')
 
+    def test_fails_on_parse_error(self):
+        self.assertRaises(morphlib.Error, self.mf.get_morphology,
+                          'reponame', 'sha1', 'parse-error.morph')
+