def test_simple_resume_suspend(self, tmpfile):
with saved_fd(1):
cap = capture.FDCapture(1)
cap.start()
data = tobytes("hello")
os.write(1, data)
sys.stdout.write("whatever")
s = cap.snap()
assert s == "hellowhatever"
cap.suspend()
os.write(1, tobytes("world"))
sys.stdout.write("qlwkej")
assert not cap.snap()
cap.resume()
os.write(1, tobytes("but now"))
sys.stdout.write(" yes\n")
s = cap.snap()
assert s == "but now yes\n"
cap.suspend()
cap.done()
pytest.raises(AttributeError, cap.suspend)
def test_stdin(self, tmpfile):
cap = capture.FDCapture(0)
cap.start()
x = os.read(0, 100).strip()
cap.done()
assert x == tobytes('')
def test_simple_fail_second_start(self, tmpfile):
fd = tmpfile.fileno()
cap = capture.FDCapture(fd)
cap.done()
pytest.raises(ValueError, cap.start)
def test_stdin(self):
cap = capture.FDCapture(0)
cap.start()
x = os.read(0, 100).strip()
cap.done()
assert x == b""
def StdCaptureFD(out: bool = True, err: bool = True, in_: bool = True) -> MultiCapture:
return capture.MultiCapture(
in_=capture.FDCapture(0) if in_ else None,
out=capture.FDCapture(1) if out else None,
err=capture.FDCapture(2) if err else None,
)