test_schedule.py

"""Unit tests for schedule.py"""
import datetime
import functools
import mock
import unittest

# Silence "missing docstring", "method could be a function",
# "class already defined", and "too many public methods" messages:
# pylint: disable-msg=R0201,C0111,E0102,R0904,R0901

import schedule
from schedule import (
    every,
    repeat,
    ScheduleError,
    ScheduleValueError,
    IntervalError,
)


def make_mock_job(name=None):
    job = mock.Mock()
    job.__name__ = name or "job"
    return job


class mock_datetime(object):
    """
    Monkey-patch datetime for predictable results
    """

    def __init__(self, year, month, day, hour, minute, second=0):
        self.year = year
        self.month = month
        self.day = day
        self.hour = hour
        self.minute = minute
        self.second = second

    def __enter__(self):
        class MockDate(datetime.datetime):
            @classmethod
            def today(cls):
                return cls(self.year, self.month, self.day)

            @classmethod
            def now(cls):
                return cls(
                    self.year,
                    self.month,
                    self.day,
                    self.hour,
                    self.minute,
                    self.second,
                )

        self.original_datetime = datetime.datetime
        datetime.datetime = MockDate

        return MockDate(
            self.year, self.month, self.day, self.hour, self.minute, self.second
        )

    def __exit__(self, *args, **kwargs):
        datetime.datetime = self.original_datetime


class SchedulerTests(unittest.TestCase):
    def setUp(self):
        schedule.clear()

    def test_time_units(self):
        assert every().seconds.unit == "seconds"
        assert every().minutes.unit == "minutes"
        assert every().hours.unit == "hours"
        assert every().days.unit == "days"
        assert every().weeks.unit == "weeks"

        job_instance = schedule.Job(interval=2)
        # without a context manager, it incorrectly raises an error because
        # it is not callable
        with self.assertRaises(IntervalError):
            job_instance.minute
        with self.assertRaises(IntervalError):
            job_instance.hour
        with self.assertRaises(IntervalError):
            job_instance.day
        with self.assertRaises(IntervalError):
            job_instance.week
        with self.assertRaisesRegex(
            IntervalError,
            (
                r"Scheduling \.monday\(\) jobs is only allowed for weekly jobs\. "
                r"Using \.monday\(\) on a job scheduled to run every 2 or more "
                r"weeks is not supported\."
            ),
        ):
            job_instance.monday
        with self.assertRaisesRegex(
            IntervalError,
            (
                r"Scheduling \.tuesday\(\) jobs is only allowed for weekly jobs\. "
                r"Using \.tuesday\(\) on a job scheduled to run every 2 or more "
                r"weeks is not supported\."
            ),
        ):
            job_instance.tuesday
        with self.assertRaisesRegex(
            IntervalError,
            (
                r"Scheduling \.wednesday\(\) jobs is only allowed for weekly jobs\. "
                r"Using \.wednesday\(\) on a job scheduled to run every 2 or more "
                r"weeks is not supported\."
            ),
        ):
            job_instance.wednesday
        with self.assertRaisesRegex(
            IntervalError,
            (
                r"Scheduling \.thursday\(\) jobs is only allowed for weekly jobs\. "
                r"Using \.thursday\(\) on a job scheduled to run every 2 or more "
                r"weeks is not supported\."
            ),
        ):
            job_instance.thursday
        with self.assertRaisesRegex(
            IntervalError,
            (
                r"Scheduling \.friday\(\) jobs is only allowed for weekly jobs\. "
                r"Using \.friday\(\) on a job scheduled to run every 2 or more "
                r"weeks is not supported\."
            ),
        ):
            job_instance.friday
        with self.assertRaisesRegex(
            IntervalError,
            (
                r"Scheduling \.saturday\(\) jobs is only allowed for weekly jobs\. "
                r"Using \.saturday\(\) on a job scheduled to run every 2 or more "
                r"weeks is not supported\."
            ),
        ):
            job_instance.saturday
        with self.assertRaisesRegex(
            IntervalError,
            (
                r"Scheduling \.sunday\(\) jobs is only allowed for weekly jobs\. "
                r"Using \.sunday\(\) on a job scheduled to run every 2 or more "
                r"weeks is not supported\."
            ),
        ):
            job_instance.sunday

        # test an invalid unit
        job_instance.unit = "foo"
        self.assertRaises(ScheduleValueError, job_instance.at, "1:0:0")
        self.assertRaises(ScheduleValueError, job_instance._schedule_next_run)

        # test start day exists but unit is not 'weeks'
        job_instance.unit = "days"
        job_instance.start_day = 1
        self.assertRaises(ScheduleValueError, job_instance._schedule_next_run)

        # test weeks with an invalid start day
        job_instance.unit = "weeks"
        job_instance.start_day = "bar"
        self.assertRaises(ScheduleValueError, job_instance._schedule_next_run)

        # test a valid unit with invalid hours/minutes/seconds
        job_instance.unit = "days"
        self.assertRaises(ScheduleValueError, job_instance.at, "25:00:00")
        self.assertRaises(ScheduleValueError, job_instance.at, "00:61:00")
        self.assertRaises(ScheduleValueError, job_instance.at, "00:00:61")

        # test invalid time format
        self.assertRaises(ScheduleValueError, job_instance.at, "25:0:0")
        self.assertRaises(ScheduleValueError, job_instance.at, "0:61:0")
        self.assertRaises(ScheduleValueError, job_instance.at, "0:0:61")

        # test (very specific) seconds with unspecified start_day
        job_instance.unit = "seconds"
        job_instance.at_time = datetime.datetime.now()
        job_instance.start_day = None
        self.assertRaises(ScheduleValueError, job_instance._schedule_next_run)

        # test self.latest >= self.interval
        job_instance.latest = 1
        self.assertRaises(ScheduleError, job_instance._schedule_next_run)
        job_instance.latest = 3
        self.assertRaises(ScheduleError, job_instance._schedule_next_run)

    def test_singular_time_units_match_plural_units(self):
        assert every().second.unit == every().seconds.unit
        assert every().minute.unit == every().minutes.unit
        assert every().hour.unit == every().hours.unit
        assert every().day.unit == every().days.unit
        assert every().week.unit == every().weeks.unit

    def test_time_range(self):
        with mock_datetime(2014, 6, 28, 12, 0):
            mock_job = make_mock_job()

            # Choose a sample size large enough that it's unlikely the
            # same value will be chosen each time.
            minutes = set(
                [
                    every(5).to(30).minutes.do(mock_job).next_run.minute
                    for i in range(100)
                ]
            )

            assert len(minutes) > 1
            assert min(minutes) >= 5
            assert max(minutes) <= 30

    def test_time_range_repr(self):
        mock_job = make_mock_job()

        with mock_datetime(2014, 6, 28, 12, 0):
            job_repr = repr(every(5).to(30).minutes.do(mock_job))

        assert job_repr.startswith("Every 5 to 30 minutes do job()")

    def test_at_time(self):
        mock_job = make_mock_job()
        assert every().day.at("10:30").do(mock_job).next_run.hour == 10
        assert every().day.at("10:30").do(mock_job).next_run.minute == 30
        assert every().day.at("10:30:50").do(mock_job).next_run.second == 50

        self.assertRaises(ScheduleValueError, every().day.at, "2:30:000001")
        self.assertRaises(ScheduleValueError, every().day.at, "::2")
        self.assertRaises(ScheduleValueError, every().day.at, ".2")
        self.assertRaises(ScheduleValueError, every().day.at, "2")
        self.assertRaises(ScheduleValueError, every().day.at, ":2")
        self.assertRaises(ScheduleValueError, every().day.at, " 2:30:00")
        self.assertRaises(ScheduleValueError, every().do, lambda: 0)
        self.assertRaises(TypeError, every().day.at, 2)

        # without a context manager, it incorrectly raises an error because
        # it is not callable
        with self.assertRaises(IntervalError):
            every(interval=2).second
        with self.assertRaises(IntervalError):
            every(interval=2).minute
        with self.assertRaises(IntervalError):
            every(interval=2).hour
        with self.assertRaises(IntervalError):
            every(interval=2).day
        with self.assertRaises(IntervalError):
            every(interval=2).week
        with self.assertRaises(IntervalError):
            every(interval=2).monday
        with self.assertRaises(IntervalError):
            every(interval=2).tuesday
        with self.assertRaises(IntervalError):
            every(interval=2).wednesday
        with self.assertRaises(IntervalError):
            every(interval=2).thursday
        with self.assertRaises(IntervalError):
            every(interval=2).friday
        with self.assertRaises(IntervalError):
            every(interval=2).saturday
        with self.assertRaises(IntervalError):
            every(interval=2).sunday

    def test_until_time(self):
        mock_job = make_mock_job()
        # Check argument parsing
        with mock_datetime(2020, 1, 1, 10, 0, 0) as m:
            assert every().day.until(datetime.datetime(3000, 1, 1, 20, 30)).do(
                mock_job
            ).cancel_after == datetime.datetime(3000, 1, 1, 20, 30, 0)
            assert every().day.until(datetime.datetime(3000, 1, 1, 20, 30, 50)).do(
                mock_job
            ).cancel_after == datetime.datetime(3000, 1, 1, 20, 30, 50)
            assert every().day.until(datetime.time(12, 30)).do(
                mock_job
            ).cancel_after == m.replace(hour=12, minute=30, second=0, microsecond=0)
            assert every().day.until(datetime.time(12, 30, 50)).do(
                mock_job
            ).cancel_after == m.replace(hour=12, minute=30, second=50, microsecond=0)

            assert every().day.until(
                datetime.timedelta(days=40, hours=5, minutes=12, seconds=42)
            ).do(mock_job).cancel_after == datetime.datetime(2020, 2, 10, 15, 12, 42)

            assert every().day.until("10:30").do(mock_job).cancel_after == m.replace(
                hour=10, minute=30, second=0, microsecond=0
            )
            assert every().day.until("10:30:50").do(mock_job).cancel_after == m.replace(
                hour=10, minute=30, second=50, microsecond=0
            )
            assert every().day.until("3000-01-01 10:30").do(
                mock_job
            ).cancel_after == datetime.datetime(3000, 1, 1, 10, 30, 0)
            assert every().day.until("3000-01-01 10:30:50").do(
                mock_job
            ).cancel_after == datetime.datetime(3000, 1, 1, 10, 30, 50)
            assert every().day.until(datetime.datetime(3000, 1, 1, 10, 30, 50)).do(
                mock_job
            ).cancel_after == datetime.datetime(3000, 1, 1, 10, 30, 50)

        # Invalid argument types
        self.assertRaises(TypeError, every().day.until, 123)
        self.assertRaises(ScheduleValueError, every().day.until, "123")
        self.assertRaises(ScheduleValueError, every().day.until, "01-01-3000")

        # Using .until() with moments in the passed
        self.assertRaises(
            ScheduleValueError,
            every().day.until,
            datetime.datetime(2019, 12, 31, 23, 59),
        )
        self.assertRaises(
            ScheduleValueError, every().day.until, datetime.timedelta(minutes=-1)
        )
        self.assertRaises(ScheduleValueError, every().day.until, datetime.time(hour=5))

        # Unschedule job after next_run passes the deadline
        schedule.clear()
        with mock_datetime(2020, 1, 1, 11, 35, 10):
            mock_job.reset_mock()
            every(5).seconds.until(datetime.time(11, 35, 20)).do(mock_job)
            with mock_datetime(2020, 1, 1, 11, 35, 15):
                schedule.run_pending()
                assert mock_job.call_count == 1
                assert len(schedule.jobs) == 1
            with mock_datetime(2020, 1, 1, 11, 35, 20):
                schedule.run_all()
                assert mock_job.call_count == 2
                assert len(schedule.jobs) == 0

        # Unschedule job because current execution time has passed deadline
        schedule.clear()
        with mock_datetime(2020, 1, 1, 11, 35, 10):
            mock_job.reset_mock()
            every(5).seconds.until(datetime.time(11, 35, 20)).do(mock_job)
            with mock_datetime(2020, 1, 1, 11, 35, 50):
                schedule.run_pending()
                assert mock_job.call_count == 0
                assert len(schedule.jobs) == 0

    def test_weekday_at_todady(self):
        mock_job = make_mock_job()

        # This date is a wednesday
        with mock_datetime(2020, 11, 25, 22, 38, 5):
            job = every().wednesday.at("22:38:10").do(mock_job)
            assert job.next_run.hour == 22
            assert job.next_run.minute == 38
            assert job.next_run.second == 10
            assert job.next_run.year == 2020
            assert job.next_run.month == 11
            assert job.next_run.day == 25

            job = every().wednesday.at("22:39").do(mock_job)
            assert job.next_run.hour == 22
            assert job.next_run.minute == 39
            assert job.next_run.second == 00
            assert job.next_run.year == 2020
            assert job.next_run.month == 11
            assert job.next_run.day == 25

    def test_at_time_hour(self):
        with mock_datetime(2010, 1, 6, 12, 20):
            mock_job = make_mock_job()
            assert every().hour.at(":30").do(mock_job).next_run.hour == 12
            assert every().hour.at(":30").do(mock_job).next_run.minute == 30
            assert every().hour.at(":30").do(mock_job).next_run.second == 0
            assert every().hour.at(":10").do(mock_job).next_run.hour == 13
            assert every().hour.at(":10").do(mock_job).next_run.minute == 10
            assert every().hour.at(":10").do(mock_job).next_run.second == 0
            assert every().hour.at(":00").do(mock_job).next_run.hour == 13
            assert every().hour.at(":00").do(mock_job).next_run.minute == 0
            assert every().hour.at(":00").do(mock_job).next_run.second == 0

            self.assertRaises(ScheduleValueError, every().hour.at, "2:30:00")
            self.assertRaises(ScheduleValueError, every().hour.at, "::2")
            self.assertRaises(ScheduleValueError, every().hour.at, ".2")
            self.assertRaises(ScheduleValueError, every().hour.at, "2")
            self.assertRaises(ScheduleValueError, every().hour.at, " 2:30")
            self.assertRaises(ScheduleValueError, every().hour.at, "61:00")
            self.assertRaises(ScheduleValueError, every().hour.at, "00:61")
            self.assertRaises(ScheduleValueError, every().hour.at, "01:61")
            self.assertRaises(TypeError, every().hour.at, 2)

            # test the 'MM:SS' format
            assert every().hour.at("30:05").do(mock_job).next_run.hour == 12
            assert every().hour.at("30:05").do(mock_job).next_run.minute == 30
            assert every().hour.at("30:05").do(mock_job).next_run.second == 5
            assert every().hour.at("10:25").do(mock_job).next_run.hour == 13
            assert every().hour.at("10:25").do(mock_job).next_run.minute == 10
            assert every().hour.at("10:25").do(mock_job).next_run.second == 25
            assert every().hour.at("00:40").do(mock_job).next_run.hour == 13
            assert every().hour.at("00:40").do(mock_job).next_run.minute == 0
            assert every().hour.at("00:40").do(mock_job).next_run.second == 40

    def test_at_time_minute(self):
        with mock_datetime(2010, 1, 6, 12, 20, 30):
            mock_job = make_mock_job()
            assert every().minute.at(":40").do(mock_job).next_run.hour == 12
            assert every().minute.at(":40").do(mock_job).next_run.minute == 20
            assert every().minute.at(":40").do(mock_job).next_run.second == 40
            assert every().minute.at(":10").do(mock_job).next_run.hour == 12
            assert every().minute.at(":10").do(mock_job).next_run.minute == 21
            assert every().minute.at(":10").do(mock_job).next_run.second == 10

            self.assertRaises(ScheduleValueError, every().minute.at, "::2")
            self.assertRaises(ScheduleValueError, every().minute.at, ".2")
            self.assertRaises(ScheduleValueError, every().minute.at, "2")
            self.assertRaises(ScheduleValueError, every().minute.at, "2:30:00")
            self.assertRaises(ScheduleValueError, every().minute.at, "2:30")
            self.assertRaises(ScheduleValueError, every().minute.at, " :30")
            self.assertRaises(TypeError, every().minute.at, 2)

    def test_next_run_time(self):
        with mock_datetime(2010, 1, 6, 12, 15):
            mock_job = make_mock_job()
            assert schedule.next_run() is None
            assert every().minute.do(mock_job).next_run.minute == 16
            assert every(5).minutes.do(mock_job).next_run.minute == 20
            assert every().hour.do(mock_job).next_run.hour == 13
            assert every().day.do(mock_job).next_run.day == 7
            assert every().day.at("09:00").do(mock_job).next_run.day == 7
            assert every().day.at("12:30").do(mock_job).next_run.day == 6
            assert every().week.do(mock_job).next_run.day == 13
            assert every().monday.do(mock_job).next_run.day == 11
            assert every().tuesday.do(mock_job).next_run.day == 12
            assert every().wednesday.do(mock_job).next_run.day == 13
            assert every().thursday.do(mock_job).next_run.day == 7
            assert every().friday.do(mock_job).next_run.day == 8
            assert every().saturday.do(mock_job).next_run.day == 9
            assert every().sunday.do(mock_job).next_run.day == 10
            assert (
                every().minute.until(datetime.time(12, 17)).do(mock_job).next_run.minute
                == 16
            )

    def test_next_run_time_day_end(self):
        mock_job = make_mock_job()
        # At day 1, schedule job to run at daily 23:30
        with mock_datetime(2010, 12, 1, 23, 0, 0):
            job = every().day.at("23:30").do(mock_job)
            # first occurrence same day
            assert job.next_run.day == 1
            assert job.next_run.hour == 23

        # Running the job 01:00 on day 2, afterwards the job should be
        # scheduled at 23:30 the same day. This simulates a job that started
        # on day 1 at 23:30 and took 1,5 hours to finish
        with mock_datetime(2010, 12, 2, 1, 0, 0):
            job.run()
            assert job.next_run.day == 2
            assert job.next_run.hour == 23

        # Run the job at 23:30 on day 2, afterwards the job should be
        # scheduled at 23:30 the next day
        with mock_datetime(2010, 12, 2, 23, 30, 0):
            job.run()
            assert job.next_run.day == 3
            assert job.next_run.hour == 23

    def test_next_run_time_hour_end(self):
        mock_job = make_mock_job()
        with mock_datetime(2010, 10, 10, 12, 0, 0):
            job = every().hour.at(":10").do(mock_job)
            assert job.next_run.hour == 12
            assert job.next_run.minute == 10

        with mock_datetime(2010, 10, 10, 13, 0, 0):
            job.run()
            assert job.next_run.hour == 13
            assert job.next_run.minute == 10

        with mock_datetime(2010, 10, 10, 13, 15, 0):
            job.run()
            assert job.next_run.hour == 14
            assert job.next_run.minute == 10

    def test_next_run_time_minute_end(self):
        mock_job = make_mock_job()
        with mock_datetime(2010, 10, 10, 10, 10, 0):
            job = every().minute.at(":15").do(mock_job)
            assert job.next_run.minute == 10
            assert job.next_run.second == 15

        with mock_datetime(2010, 10, 10, 10, 10, 59):
            job.run()
            assert job.next_run.minute == 11
            assert job.next_run.second == 15

        with mock_datetime(2010, 10, 10, 10, 12, 14):
            job.run()
            assert job.next_run.minute == 12
            assert job.next_run.second == 15

        with mock_datetime(2010, 10, 10, 10, 12, 16):
            job.run()
            assert job.next_run.minute == 13
            assert job.next_run.second == 15

    def test_run_all(self):
        mock_job = make_mock_job()
        every().minute.do(mock_job)
        every().hour.do(mock_job)
        every().day.at("11:00").do(mock_job)
        schedule.run_all()
        assert mock_job.call_count == 3

    def test_run_all_with_decorator(self):
        mock_job = make_mock_job()

        @repeat(every().minute)
        def job1():
            mock_job()

        @repeat(every().hour)
        def job2():
            mock_job()

        @repeat(every().day.at("11:00"))
        def job3():
            mock_job()

        schedule.run_all()
        assert mock_job.call_count == 3

    def test_run_all_with_decorator_args(self):
        mock_job = make_mock_job()

        @repeat(every().minute, 1, 2, "three", foo=23, bar={})
        def job(*args, **kwargs):
            mock_job(*args, **kwargs)

        schedule.run_all()
        mock_job.assert_called_once_with(1, 2, "three", foo=23, bar={})

    def test_run_all_with_decorator_defaultargs(self):
        mock_job = make_mock_job()

        @repeat(every().minute)
        def job(nothing=None):
            mock_job(nothing)

        schedule.run_all()
        mock_job.assert_called_once_with(None)

    def test_job_func_args_are_passed_on(self):
        mock_job = make_mock_job()
        every().second.do(mock_job, 1, 2, "three", foo=23, bar={})
        schedule.run_all()
        mock_job.assert_called_once_with(1, 2, "three", foo=23, bar={})

    def test_to_string(self):
        def job_fun():
            pass

        s = str(every().minute.do(job_fun, "foo", bar=23))
        assert s == (
            "Job(interval=1, unit=minutes, do=job_fun, "
            "args=('foo',), kwargs={'bar': 23})"
        )
        assert "job_fun" in s
        assert "foo" in s
        assert "{'bar': 23}" in s

    def test_to_repr(self):
        def job_fun():
            pass

        s = repr(every().minute.do(job_fun, "foo", bar=23))
        assert s.startswith(
            "Every 1 minute do job_fun('foo', bar=23) (last run: [never], next run: "
        )
        assert "job_fun" in s
        assert "foo" in s
        assert "bar=23" in s

        # test repr when at_time is not None
        s2 = repr(every().day.at("00:00").do(job_fun, "foo", bar=23))
        assert s2.startswith(
            (
                "Every 1 day at 00:00:00 do job_fun('foo', "
                "bar=23) (last run: [never], next run: "
            )
        )

    def test_to_string_lambda_job_func(self):
        assert len(str(every().minute.do(lambda: 1))) > 1
        assert len(str(every().day.at("10:30").do(lambda: 1))) > 1

    def test_repr_functools_partial_job_func(self):
        def job_fun(arg):
            pass

        job_fun = functools.partial(job_fun, "foo")
        job_repr = repr(every().minute.do(job_fun, bar=True, somekey=23))
        assert "functools.partial" in job_repr
        assert "bar=True" in job_repr
        assert "somekey=23" in job_repr

    def test_to_string_functools_partial_job_func(self):
        def job_fun(arg):
            pass

        job_fun = functools.partial(job_fun, "foo")
        job_str = str(every().minute.do(job_fun, bar=True, somekey=23))
        assert "functools.partial" in job_str
        assert "bar=True" in job_str
        assert "somekey=23" in job_str

    def test_run_pending(self):
        """Check that run_pending() runs pending jobs.
        We do this by overriding datetime.datetime with mock objects
        that represent increasing system times.

        Please note that it is *intended behavior that run_pending() does not
        run missed jobs*. For example, if you've registered a job that
        should run every minute and you only call run_pending() in one hour
        increments then your job won't be run 60 times in between but
        only once.
        """
        mock_job = make_mock_job()

        with mock_datetime(2010, 1, 6, 12, 15):
            every().minute.do(mock_job)
            every().hour.do(mock_job)
            every().day.do(mock_job)
            every().sunday.do(mock_job)
            schedule.run_pending()
            assert mock_job.call_count == 0

        with mock_datetime(2010, 1, 6, 12, 16):
            schedule.run_pending()
            assert mock_job.call_count == 1

        with mock_datetime(2010, 1, 6, 13, 16):
            mock_job.reset_mock()
            schedule.run_pending()
            assert mock_job.call_count == 2

        with mock_datetime(2010, 1, 7, 13, 16):
            mock_job.reset_mock()
            schedule.run_pending()
            assert mock_job.call_count == 3

        with mock_datetime(2010, 1, 10, 13, 16):
            mock_job.reset_mock()
            schedule.run_pending()
            assert mock_job.call_count == 4

    def test_run_every_weekday_at_specific_time_today(self):
        mock_job = make_mock_job()
        with mock_datetime(2010, 1, 6, 13, 16):
            every().wednesday.at("14:12").do(mock_job)
            schedule.run_pending()
            assert mock_job.call_count == 0

        with mock_datetime(2010, 1, 6, 14, 16):
            schedule.run_pending()
            assert mock_job.call_count == 1

    def test_run_every_weekday_at_specific_time_past_today(self):
        mock_job = make_mock_job()
        with mock_datetime(2010, 1, 6, 13, 16):
            every().wednesday.at("13:15").do(mock_job)
            schedule.run_pending()
            assert mock_job.call_count == 0

        with mock_datetime(2010, 1, 13, 13, 14):
            schedule.run_pending()
            assert mock_job.call_count == 0

        with mock_datetime(2010, 1, 13, 13, 16):
            schedule.run_pending()
            assert mock_job.call_count == 1

    def test_run_every_n_days_at_specific_time(self):
        mock_job = make_mock_job()
        with mock_datetime(2010, 1, 6, 11, 29):
            every(2).days.at("11:30").do(mock_job)
            schedule.run_pending()
            assert mock_job.call_count == 0

        with mock_datetime(2010, 1, 6, 11, 31):
            schedule.run_pending()
            assert mock_job.call_count == 0

        with mock_datetime(2010, 1, 7, 11, 31):
            schedule.run_pending()
            assert mock_job.call_count == 0

        with mock_datetime(2010, 1, 8, 11, 29):
            schedule.run_pending()
            assert mock_job.call_count == 0

        with mock_datetime(2010, 1, 8, 11, 31):
            schedule.run_pending()
            assert mock_job.call_count == 1

        with mock_datetime(2010, 1, 10, 11, 31):
            schedule.run_pending()
            assert mock_job.call_count == 2

    def test_next_run_property(self):
        original_datetime = datetime.datetime
        with mock_datetime(2010, 1, 6, 13, 16):
            hourly_job = make_mock_job("hourly")
            daily_job = make_mock_job("daily")
            every().day.do(daily_job)
            every().hour.do(hourly_job)
            assert len(schedule.jobs) == 2
            # Make sure the hourly job is first
            assert schedule.next_run() == original_datetime(2010, 1, 6, 14, 16)

    def test_idle_seconds(self):
        assert schedule.next_run() is None
        assert schedule.idle_seconds() is None

        mock_job = make_mock_job()
        with mock_datetime(2020, 12, 9, 21, 46):
            job = every().hour.do(mock_job)
            assert schedule.idle_seconds() == 60 * 60
            schedule.cancel_job(job)
            assert schedule.next_run() is None
            assert schedule.idle_seconds() is None

    def test_cancel_job(self):
        def stop_job():
            return schedule.CancelJob

        mock_job = make_mock_job()

        every().second.do(stop_job)
        mj = every().second.do(mock_job)
        assert len(schedule.jobs) == 2

        schedule.run_all()
        assert len(schedule.jobs) == 1
        assert schedule.jobs[0] == mj

        schedule.cancel_job("Not a job")
        assert len(schedule.jobs) == 1
        schedule.default_scheduler.cancel_job("Not a job")
        assert len(schedule.jobs) == 1

        schedule.cancel_job(mj)
        assert len(schedule.jobs) == 0

    def test_cancel_jobs(self):
        def stop_job():
            return schedule.CancelJob

        every().second.do(stop_job)
        every().second.do(stop_job)
        every().second.do(stop_job)
        assert len(schedule.jobs) == 3

        schedule.run_all()
        assert len(schedule.jobs) == 0

    def test_tag_type_enforcement(self):
        job1 = every().second.do(make_mock_job(name="job1"))
        self.assertRaises(TypeError, job1.tag, {})
        self.assertRaises(TypeError, job1.tag, 1, "a", [])
        job1.tag(0, "a", True)
        assert len(job1.tags) == 3

    def test_get_by_tag(self):
        every().second.do(make_mock_job()).tag("job1", "tag1")
        every().second.do(make_mock_job()).tag("job2", "tag2", "tag4")
        every().second.do(make_mock_job()).tag("job3", "tag3", "tag4")

        # Test None input yields all 3
        jobs = schedule.get_jobs()
        assert len(jobs) == 3
        assert {"job1", "job2", "job3"}.issubset(
            {*jobs[0].tags, *jobs[1].tags, *jobs[2].tags}
        )

        # Test each 1:1 tag:job
        jobs = schedule.get_jobs("tag1")
        assert len(jobs) == 1
        assert "job1" in jobs[0].tags

        # Test multiple jobs found.
        jobs = schedule.get_jobs("tag4")
        assert len(jobs) == 2
        assert "job1" not in {*jobs[0].tags, *jobs[1].tags}

        # Test no tag.
        jobs = schedule.get_jobs("tag5")
        assert len(jobs) == 0
        schedule.clear()
        assert len(schedule.jobs) == 0

    def test_clear_by_tag(self):
        every().second.do(make_mock_job(name="job1")).tag("tag1")
        every().second.do(make_mock_job(name="job2")).tag("tag1", "tag2")
        every().second.do(make_mock_job(name="job3")).tag(
            "tag3", "tag3", "tag3", "tag2"
        )
        assert len(schedule.jobs) == 3
        schedule.run_all()
        assert len(schedule.jobs) == 3
        schedule.clear("tag3")
        assert len(schedule.jobs) == 2
        schedule.clear("tag1")
        assert len(schedule.jobs) == 0
        every().second.do(make_mock_job(name="job1"))
        every().second.do(make_mock_job(name="job2"))
        every().second.do(make_mock_job(name="job3"))
        schedule.clear()
        assert len(schedule.jobs) == 0

    def test_misconfigured_job_wont_break_scheduler(self):
        """
        Ensure an interrupted job definition chain won't break
        the scheduler instance permanently.
        """
        scheduler = schedule.Scheduler()
        scheduler.every()
        scheduler.every(10).seconds
        scheduler.run_pending()