config: Add basic validate tests

mopidy/config/__init__.py

@@ -103,23 +103,8 @@ def validate(raw_config, schemas, extensions=None):
     for extension in extensions or []:
         sections_and_schemas.append(
             (extension.ext_name, extension.get_config_schema()))
-    return _validate(raw_config, sections_and_schemas)
 
-
-# TODO: replace validate() with this version of API.
-def _validate(raw_config, schemas):
-    # Get validated config
-    config = {}
-    errors = {}
-    for name, schema in schemas:
-        if name not in raw_config:
-            errors[name] = {name: 'section not found'}
-        try:
-            items = raw_config[name].items()
-            config[name] = schema.convert(items)
-        # TODO: convert to ConfigSchemaError
-        except exceptions.ConfigError as error:
-            errors[name] = error
+    config, errors = _validate(raw_config, sections_and_schemas)
 
     if errors:
         # TODO: raise error instead.
@@ -133,6 +118,24 @@ def _validate(raw_config, schemas):
     return config
 
 
+# TODO: replace validate() with this version of API.
+def _validate(raw_config, schemas):
+    # Get validated config
+    config = {}
+    errors = []
+    for name, schema in schemas:
+        try:
+            items = raw_config[name].items()
+            config[name] = schema.convert(items)
+        except KeyError:
+            errors.append('%s: section not found.' % name)
+        except exceptions.ConfigError as error:
+            for key in error:
+                errors.append('%s/%s: %s' % (name, key, error[key]))
+    # TODO: raise errors instead of return
+    return config, errors
+
+
 def parse_override(override):
     """Parse section/key=value override."""
     section, remainder = override.split('/', 1)

tests/config/config_test.py

@@ -1,6 +1,8 @@
 from __future__ import unicode_literals
 
-from mopidy import config
+import mock
+
+from mopidy import config, exceptions
 
 from tests import unittest, path_to_data_dir
 
@@ -49,6 +51,42 @@ class LoadConfigTest(unittest.TestCase):
         self.assertEqual(expected, result)
 
 
+class ValidateTest(unittest.TestCase):
+    def test_empty_config_no_schemas(self):
+        conf, errors = config._validate({}, [])
+        self.assertEqual({}, conf)
+        self.assertEqual([], errors)
+
+    def test_config_no_schemas(self):
+        raw_config = {'foo': {'bar': 'baz'}}
+        conf, errors = config._validate(raw_config, [])
+        self.assertEqual({}, conf)
+        self.assertEqual([], errors)
+
+    def test_empty_config_single_schema(self):
+        conf, errors = config._validate({}, [('foo', mock.Mock())])
+        self.assertEqual({}, conf)
+        self.assertEqual(['foo: section not found.'], errors)
+
+    def test_config_single_schema(self):
+        raw_config = {'foo': {'bar': 'baz'}}
+        schema = mock.Mock()
+        schema.convert.return_value = {'baz': 'bar'}
+        conf, errors = config._validate(raw_config, [('foo', schema)])
+        self.assertEqual({'foo': {'baz': 'bar'}}, conf)
+        self.assertEqual([], errors)
+
+    def test_config_single_schema_config_error(self):
+        raw_config = {'foo': {'bar': 'baz'}}
+        schema = mock.Mock()
+        schema.convert.side_effect = exceptions.ConfigError({'bar': 'bad'})
+        conf, errors = config._validate(raw_config, [('foo', schema)])
+        self.assertEqual(['foo/bar: bad'], errors)
+        self.assertEqual({}, conf)
+
+    # TODO: add more tests
+
+
 class ParseOverrideTest(unittest.TestCase):
     def test_valid_override(self):
         expected = ('section', 'key', 'value')