...
----------------------------------------------------------------------
Ran 3 tests in 0.051s

OK
[<EqualAssertion stdout == 'v=None\n'>, <EqualAssertion status == 0>]
[(1, 0, 'Env binding in readonly/declare disallowed'),
 (2, 2, 'FOO=foo readonly v=$(tests/printenv.py FOO)'),
 (3, 2, 'echo "v=$v"'),
 (6, 1, ('OK', 'bash/dash/mksh', 'stdout', 'v=None\n')),
 (7, 1, ('OK', 'bash/dash/mksh', 'status', '0')),
 (8, 1, (None, None, 'status', '2')),
 (8, 3, None)]
{'bash': {'qualifier': 'OK', 'status': '0', 'stdout': 'v=None\n'},
 'code': 'FOO=foo readonly v=$(tests/printenv.py FOO)\necho "v=$v"\n',
 'dash': {'qualifier': 'OK', 'status': '0', 'stdout': 'v=None\n'},
 'desc': 'Env binding in readonly/declare disallowed',
 'line_num': 1,
 'mksh': {'qualifier': 'OK', 'status': '0', 'stdout': 'v=None\n'},
 'status': '2'}
case	line	bash	osh	
  0	  1	FAIL	pass	Env binding in readonly/declare disallowed