Merge "Speed up SQL unit tests."

.gitignore

@@ -21,3 +21,4 @@ AUTHORS
 build/
 dist/
 etc/keystone.conf
+tests/test.db.pristine

keystone/common/sql/util.py

@@ -15,6 +15,7 @@
 # under the License.
 
 import os
+import shutil
 
 from keystone import config
 from keystone.common.sql import migration
@@ -24,9 +25,13 @@ CONF = config.CONF
 
 
 def setup_test_database():
-    # TODO(termie): be smart about this
     try:
-        os.unlink('test.db')
+        if os.path.exists('test.db'):
+            os.unlink('test.db')
+        if not os.path.exists('test.db.pristine'):
+            migration.db_sync()
+            shutil.copyfile('test.db', 'test.db.pristine')
+        else:
+            shutil.copyfile('test.db.pristine', 'test.db')
     except Exception:
         pass
-    migration.db_sync()

run_tests.py

@@ -66,6 +66,8 @@ from nose import config
 from nose import core
 from nose import result
 
+from keystone.common.sql import util
+
 
 class _AnsiColorizer(object):
     """
@@ -357,4 +359,7 @@ if __name__ == '__main__':
                             verbosity=c.verbosity,
                             config=c,
                             show_elapsed=show_elapsed)
+    if os.path.exists('tests/test.db.pristine'):
+        os.unlink('tests/test.db.pristine')
+
     sys.exit(not core.run(config=c, testRunner=runner, argv=argv))