Refactor infra git libs and testing.

infra/libs/git2/test/config_ref_test.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-from infra.services.gnumbd.support import config_ref, git
-from infra.services.gnumbd.test import git_test
+from infra.libs.git2 import config_ref
 
-class TestConfigRef(git_test.TestBasis):
+from infra.libs.git2.test import git2_test
+
+META_REF = 'refs/metaconfig'
+
+class ExampleRef(config_ref.ConfigRef):
+  CONVERT = {
+    'interval': lambda self, val: float(val),
+    'pending_tag_prefix': lambda self, val: str(val),
+    'pending_ref_prefix': lambda self, val: str(val),
+    'enabled_refglobs': lambda self, val: map(str, list(val)),
+  }
+  DEFAULTS = {
+    'interval': 5.0,
+    'pending_tag_prefix': 'refs/pending-tags',
+    'pending_ref_prefix': 'refs/pending',
+    'enabled_refglobs': [],
+  }
+  REF = META_REF
+
+
+class TestConfigRef(git2_test.TestBasis):
   def writeConfig(self, config_data):
-    ref = 'refs/metaconfig'
     def inner():
       g = self.repo.git
-      if g('rev-parse', ref).stdout.strip() != ref:
-        g('checkout', ref)
+      if g('rev-parse', META_REF).stdout.strip() != META_REF:
+        g('checkout', META_REF)
       else:
         g('checkout', '--orphan', 'config')
       g('rm', '-rf', '.')
       with open('config.json', 'w') as f:
         f.write(config_data)
       g('add', 'config.json')
       self.repo.git_commit('a bad config file')
-      g('update-ref', ref, 'HEAD')
+      g('update-ref', META_REF, 'HEAD')
     self.repo.run(inner)
 
   def testNonExist(self):
     r = self.mkRepo()
-    c = config_ref.ConfigRef(git.Ref(r, 'refs/metaconfig'))
+    c = ExampleRef(r)
     self.assertEqual(c.current, c.DEFAULTS)
     self.assertEqual(c['interval'], c.DEFAULTS['interval'])
 
   def testExistsBad(self):
     self.writeConfig("not valid config")
     r = self.mkRepo()
-    c = config_ref.ConfigRef(git.Ref(r, 'refs/metaconfig'))
+    c = ExampleRef(r)
     c.evaluate()
     self.assertEqual(c.current, c.DEFAULTS)
 
     self.writeConfig("[]")
     self.capture_stdio(r.run, 'fetch')
     c.evaluate()
     self.assertEqual(c.current, c.DEFAULTS)
 
   def testExistsGood(self):
     self.writeConfig('{"interval": 100}')
     r = self.mkRepo()
-    c = config_ref.ConfigRef(git.Ref(r, 'refs/metaconfig'))
+    c = ExampleRef(r)
     self.assertAlmostEqual(c['interval'], 100.0)
 
     self.writeConfig('{"interval": "cat"}')
     self.capture_stdio(r.run, 'fetch')
     c.evaluate()
     self.assertAlmostEqual(c['interval'], 100.0)