def test_help_env_parser():
# test running the parser from the command line with system
# arguments and environment variables
sys.argv = ['', 'help']
stdout = sys.stdout # save stdout
sys.stdout = StringIO() # redirect stdout
# run the parser
enver.run(Env())
# check the output
output = sys.stdout.getvalue()
ok_('VAR_1: Variable 1 Help' in output)
ok_('VAR_2: Variable 2 Help' in output)
# reset sys.stdout
sys.stdout = stdout
def test_dump_env_parser():
# test running the parser from the command line with system
# arguments and environment variables
sys.argv = ['', 'dump']
stdout = sys.stdout # save stdout
sys.stdout = StringIO() # redirect stdout
# run the parser
enver.run(Env())
# no environment variables means nothing set
output = sys.stdout.getvalue()
ok_('VAR_1=__NOT SET__' in output)
ok_('VAR_2=__NOT SET__' in output)
# reset the output buffer
sys.stdout.truncate(0)
# set an environment variable
os.environ['VAR_2'] = '123'
try:
# run the parser
enver.run(Env())
# one of the environment variables is set
output = sys.stdout.getvalue()
ok_('VAR_1=__NOT SET__' in output)
ok_('VAR_2=123' in output)
finally:
# clean up the environment
del os.environ['VAR_2']
# reset sys.stdout
sys.stdout = stdout
