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import subprocess
context = {}
def _save(name, value):
context[name] = value
def _get(name):
return context[name]
def assertEqual(a, b):
if a != b:
raise Exception(
'expected {!r} == {!r}, but was disappointed'.format(a, b))
def _run_echo(args):
cmd = '/bin/echo'
p = subprocess.Popen(
[cmd] + args, stdout=subprocess.PIPE, stderr=subprocess.PIPE,
text=True)
out, err = p.communicate()
context["stdout"] = out
context["stderr"] = err
context["exit_code"] = p.returncode
def run_echo_without_args():
_run_echo([])
def run_echo_with_args(args=None):
_run_echo(args.split())
def exit_code_is_zero(exit_code=None):
exit_code = int(exit_code)
assertEqual(_get("exit_code"), exit_code)
def stdout_is_a_newline():
assertEqual(_get('stdout'), '\n')
def stdout_is_text(text=None):
assertEqual(_get('stdout'), text + '\n')
def stderr_is_empty():
assertEqual(_get('stderr'), '')
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