Test suite fails with Flask-Script 0.6.7

[EdwardBetts]

This is what happens when I run the test suite.

$ python2.7 setup.py test
running test
running egg_info
writing requirements to src/Flask_Assets.egg-info/requires.txt
writing src/Flask_Assets.egg-info/PKG-INFO
writing top-level names to src/Flask_Assets.egg-info/top_level.txt
writing dependency_links to src/Flask_Assets.egg-info/dependency_links.txt
reading manifest file 'src/Flask_Assets.egg-info/SOURCES.txt'
reading manifest template 'MANIFEST.in'
no previously-included directories found matching 'docs/_build'
no previously-included directories found matching 'docs/_themes/.git'
warning: no previously-included files matching '*.pyc' found under directory 'example'
writing manifest file 'src/Flask_Assets.egg-info/SOURCES.txt'
running build_ext
tests.test_config.TestConfigAppBound.test_custom_values
Custom config values are relayed to the Flask config as.is. ... ok
tests.test_config.TestConfigAppBound.test_no_override
Ensure that the webassets defaults do not override existing ... ok
tests.test_config.TestConfigAppBound.test_set_config
Setting a value in the Flask config works. ... ok
tests.test_config.TestConfigAppBound.test_set_environment
Setting a config value on the environment works. ... ok
tests.test_config.TestConfigNoAppBound.test_global_defaults
We may set defaults even without an application, however. ... ok
tests.test_config.TestConfigNoAppBound.test_key_error
KeyError is raised if a config value doesn't exist. ... ok
tests.test_config.TestConfigNoAppBound.test_multiple_separate_apps
Each app has it's own separate configuration. ... ok
tests.test_config.TestConfigNoAppBound.test_no_app_available
Without an application bound, we can't do much. ... ok
tests.test_env.TestEnv.test_from_python_module
Python configuration module gets loaded ... ok
tests.test_env.TestEnv.test_from_yaml
YAML configuration gets loaded ... ok
tests.test_env.TestEnv.test_tag_available
Jinja tag has been made available. ... ok
tests.test_integration.TestBlueprints.test_blueprint_no_static_folder
Test dealing with a blueprint without a static folder. ... ok
tests.test_integration.TestBlueprints.test_blueprint_output
[Regression] Output can point to a blueprint's static ... ok
tests.test_integration.TestBlueprints.test_blueprint_urls
Urls to blueprint files are generated correctly. ... ok
tests.test_integration.TestBlueprints.test_cssrewrite
Make sure cssrewrite works with Blueprints. ... ok
tests.test_integration.TestBuild.test_build ... ok
tests.test_integration.TestBuild.test_with_cache_default_directory
[Regression] The cache directory is created in the Flask ... ok
tests.test_integration.TestUrlAndDirectory.test_config_values_not_set_by_default ... ok
tests.test_integration.TestUrlAndDirectory.test_custom_directory_and_url
Custom directory/url are configured - this will affect how ... ok
tests.test_integration.TestUrlAndDirectory.test_custom_load_path
A custom load_path is configured - this will affect how ... ok
tests.test_integration.TestUrlAndDirectory.test_directory_auto
Test how we resolve file references through the Flask static ... ok
tests.test_integration.TestUrlAndDirectory.test_existing_request_object_used
[Regression] Check for a bug where the url generation code of ... ok
tests.test_integration.TestUrlAndDirectory.test_glob
Make sure url generation works with globs. ... ok
tests.test_integration.TestUrlAndDirectory.test_url_auto
Test how urls are generated via the Flask static system ... ok
tests.test_integration.TestUrlAndDirectoryWithInitApp.test
Make sure the "url" and "directory" config values are ... ok
tests.test_integration.test_import ... ok
tests.test_script.TestScript.test_call ... ERROR
tests.test_script.TestScript.test_call_auto_env
Regression test: Passing the environment to the ManageAssets command ... ok
tests.test_script.TestScript.test_parse_templates
Test the --parse-templates option. ... ok

======================================================================
ERROR: tests.test_script.TestScript.test_call
----------------------------------------------------------------------
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/nose/case.py", line 197, in runTest
    self.test(*self.arg)
  File "/home/edward/src/deb_dist/flask-assets-0.11/tests/test_script.py", line 52, in test_call
    assert self.last_script_call == ['-h']
AttributeError: 'TestScript' object has no attribute 'last_script_call'
-------------------- >> begin captured stdout << ---------------------
usage: manage.py assets [-h]

Manage assets.

optional arguments:
  -h, --help  show this help message and exit

--------------------- >> end captured stdout << ----------------------

----------------------------------------------------------------------
Ran 29 tests in 0.201s

FAILED (errors=1)
$