def test_get_link_header_for_resource(self):
        response = self.get_response('/tracks/1', 200)
        assert 'Link' in response.headers
        assert '</MediaType/1>; rel="related"' in response.headers['Link'] 
        assert self.get_response('/Album/1', 200).data is not None
Set ivy to use an http proxy.
dataset/ETHPy150Open jeffknupp/sandman/tests/test_sandman.py/TestSandmanBasicVerbs.test_get_link_header_for_resource--crossover with--dataset/ETHPy150Open pantsbuild/pants/src/python/pants/ivy/ivy_subsystem.py/IvySubsystem.http_proxy