
PASS response.headers.get('content-length') expects 0 
PASS response.headers.get('content-length') expects 0, 0 
FAIL response.headers.get('double-trouble') expects ,  assert_equals: expected (string) ", " but got (object) null
PASS response.headers.get('foo-test') expects 1, 2, 3 
PASS response.headers.get('heya') expects , , 1, , , 2 
PASS response.headers.get('www-authenticate') expects 1, 2, 3, 4