Improved assertion messages for integration tests.
Improved assertion messages for integration tests.

Plus fixes for botched previous commit.

jmchilton/lwr,natefoo/pulsar,galaxyproject/pulsar,ssorgatem/pulsar,galaxyproject/pulsar,jmchilton/pulsar,jmchilton/pulsar,jmchilton/lwr,ssorgatem/pulsar,natefoo/pulsar