def test_popen_stdin_bytes(pytester: Pytester) -> None:
proc = pytester.popen(
[sys.executable, "-c", "import sys; print(sys.stdin.read())"],
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
stdin=b"input\n2ndline",
)
stdout, stderr = proc.communicate()
assert stdout.decode("utf8").splitlines() == ["input", "2ndline"]
assert stderr == b""
assert proc.returncode == 0
def test_no_brokenpipeerror_message(pytester: Pytester) -> None:
"""Ensure that the broken pipe error message is supressed.
In some Python versions, it reaches sys.unraisablehook, in others
a BrokenPipeError exception is propagated, but either way it prints
to stderr on shutdown, so checking nothing is printed is enough.
"""
popen = pytester.popen((*pytester._getpytestargs(), "--help"))
popen.stdout.close()
ret = popen.wait()
assert popen.stderr.read() == b""
assert ret == 1