def test_json():
"""Test the JSON output capability of the error bundler."""
# Use the StringIO as an output buffer.
bundle = ErrorBundle() # No color since no output
bundle.set_tier(4)
bundle.set_tier(3)
bundle.error((), "error", "description")
bundle.warning((), "warning", "description")
bundle.notice((), "notice", "description")
results = json.loads(bundle.render_json())
eq_(len(results["messages"]), 3)
assert not results["success"]
eq_(results["ending_tier"], 4)
