#!/usr/bin/env python

import os
import signal

import mozprocess
import mozunit
import proctest

here = os.path.dirname(os.path.abspath(__file__))


def kill(proc):
    is_win = os.name == "nt"
    if is_win:
        proc.send_signal(signal.CTRL_BREAK_EVENT)
    else:
        os.killpg(proc.pid, signal.SIGKILL)
    proc.wait()


class ProcTestSimpleRunAndWait(proctest.ProcTest):
    """Class to test mozprocess.run_and_wait"""

    def test_normal_finish(self):
        """Process is started, runs to completion while we wait for it"""

        p = mozprocess.run_and_wait(
            [self.python, self.proclaunch, "process_normal_finish.ini"], cwd=here
        )
        self.assertEqual(p.returncode, 0)

    def test_outputhandler(self):
        """Output handler receives output generated by process"""
        found = False

        def olh(p, line):
            nonlocal found
            self.assertEqual(line, "XYZ\n")
            found = True

        p = mozprocess.run_and_wait(
            [self.python, "-c", "print('XYZ')"], cwd=here, output_line_handler=olh
        )
        self.assertTrue(found)
        self.assertEqual(p.returncode, 0)

    def test_wait(self):
        """Process is started runs to completion while we wait indefinitely"""

        p = mozprocess.run_and_wait(
            [self.python, self.proclaunch, "process_waittimeout_10s.ini"], cwd=here
        )
        self.assertEqual(p.returncode, 0)

    def test_timeout(self):
        """Process is started, runs but we time out waiting on it
        to complete
        """
        timed_out = False

        def th(p):
            nonlocal timed_out
            timed_out = True
            kill(p)

        mozprocess.run_and_wait(
            [self.python, self.proclaunch, "process_waittimeout.ini"],
            cwd=here,
            timeout=10,
            timeout_handler=th,
        )
        self.assertTrue(timed_out)

    def test_waitnotimeout(self):
        """Process is started, runs to completion before our wait times out"""
        p = mozprocess.run_and_wait(
            [self.python, self.proclaunch, "process_waittimeout_10s.ini"],
            cwd=here,
            timeout=30,
        )
        self.assertEqual(p.returncode, 0)

    def test_outputtimeout(self):
        """Process produces output, but output stalls and exceeds output timeout"""

        pgm = """
import time

for i in range(10):
    print(i)
    time.sleep(1)
time.sleep(10)
print("survived sleep!")
        """
        found = False
        found9 = False
        timed_out = False

        def olh(p, line):
            nonlocal found
            nonlocal found9
            if "9" in line:
                found9 = True
            if "survived" in line:
                found = True

        def oth(p):
            nonlocal timed_out
            timed_out = True
            kill(p)

        mozprocess.run_and_wait(
            [self.python, "-u", "-c", pgm],
            cwd=here,
            output_timeout=5,
            output_timeout_handler=oth,
            output_line_handler=olh,
        )
        self.assertFalse(found)
        self.assertTrue(found9)
        self.assertTrue(timed_out)


if __name__ == "__main__":
    mozunit.main()