Configure a test Galaxy as needed for functional test cases.

./run_tests.sh is still good for launching one Galaxy for a bunch of different test cases - but now you can do really simple things like:

```
$ nosetests test/api/test_tours.py
```

In this scenario, the test case class will check if run_tests.sh has created a test driver to use and if it hasn't - one will be made just for the test case (like the new integration tests).

test/base/driver_util.py

@@ -80,6 +80,8 @@ def configure_environment():
     if "TOOL_SHED_TEST_FILE_DIR" not in os.environ:
         os.environ["TOOL_SHED_TEST_FILE_DIR"] = TOOL_SHED_TEST_DATA
 
+    os.environ["GALAXY_TEST_ENVIRONMENT_CONFIGURED"] = "1"
+
 
 def build_logger():
     """Build a logger for test driver script."""
@@ -688,7 +690,8 @@ def run_tool_test(self, tool_id, index=0):
 
 def drive_test(test_driver_class):
     """Instantiate driver class, run, and exit appropriately."""
-    sys.exit(test_driver_class().run())
+    test_driver = test_driver_class()
+    sys.exit(test_driver.run())
 
 
 __all__ = (

test/base/twilltestcase.py

@@ -21,6 +21,8 @@
 from galaxy.tools.verify.test_data import TestDataResolver
 from galaxy.web import security
 
+from .driver_util import GalaxyTestDriver
+
 # Force twill to log to a buffer -- FIXME: Should this go to stdout and be captured by nose?
 buffer = StringIO()
 twill.set_output( buffer )
@@ -59,6 +61,21 @@ def setUp( self ):
             except:
                 pass
 
+    @classmethod
+    def setUpClass(cls):
+        """Configure and start Galaxy for a test."""
+        cls._test_driver = None
+
+        if not os.environ.get("GALAXY_TEST_ENVIRONMENT_CONFIGURED"):
+            cls._test_driver = GalaxyTestDriver()
+            cls._test_driver.setup(config_object=cls)
+
+    @classmethod
+    def tearDownClass(cls):
+        """Shutdown Galaxy server and cleanup temp directory."""
+        if cls._test_driver:
+            cls._test_driver.tear_down()
+
     def get_filename( self, filename, shed_tool_id=None ):
         # For tool tests override get_filename to point at an installed tool if shed_tool_id is set.
         if shed_tool_id and getattr(self, "shed_tools_dict", None):