import signal
import subprocess
import sys
import time

from testutils import assert_raises

is_unix = not sys.platform.startswith("win")
if is_unix:

    def echo(text):
        return ["echo", text]

    def sleep(secs):
        return ["sleep", str(secs)]
else:

    def echo(text):
        return ["cmd", "/C", f"echo {text}"]

    def sleep(secs):
        # TODO: make work in a non-unixy environment (something with timeout.exe?)
        return ["powershell", "/C", "sleep", str(secs)]


p = subprocess.Popen(echo("test"))

time.sleep(0.1)

assert p.returncode is None

assert p.poll() == 0
assert p.returncode == 0

p = subprocess.Popen(sleep(2))

assert p.poll() is None

with assert_raises(subprocess.TimeoutExpired):
    assert p.wait(1)

p.wait()

assert p.returncode == 0

p = subprocess.Popen(echo("test"), stdout=subprocess.PIPE)
p.wait()


assert p.stdout.read().strip() == b"test"

p = subprocess.Popen(sleep(2))
p.terminate()
p.wait()
if is_unix:
    assert p.returncode == -signal.SIGTERM
else:
    assert p.returncode == 1

p = subprocess.Popen(sleep(2))
p.kill()
p.wait()
if is_unix:
    assert p.returncode == -signal.SIGKILL
else:
    assert p.returncode == 1

p = subprocess.Popen(echo("test"), stdout=subprocess.PIPE)
(stdout, stderr) = p.communicate()
assert stdout.strip() == b"test"

p = subprocess.Popen(sleep(5), stdout=subprocess.PIPE)
with assert_raises(subprocess.TimeoutExpired):
    p.communicate(timeout=1)