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import sys |
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sys.path.append('..') |
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from hamcrest.core.base_matcher import BaseMatcher |
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from hamcrest.core.helpers.hasmethod import hasmethod |
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from hamcrest import * |
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import unittest |
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import datetime |
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class IsGivenDayOfWeek(BaseMatcher): |
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"""Matches dates that fall on a given day of the week.""" |
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def __init__(self, day): |
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self.day = day # Monday is 0, Sunday is 6 |
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def _matches(self, item): |
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"""Test whether item matches.""" |
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if not hasmethod(item, 'weekday'): |
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return False |
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return item.weekday() == self.day |
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def describe_to(self, description): |
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"""Describe the matcher.""" |
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day_as_string = ['Monday', 'Tuesday', 'Wednesday', 'Thursday', |
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'Friday', 'Saturday', 'Sunday'] |
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description.append_text('calendar date falling on ') \ |
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.append_text(day_as_string[self.day]) |
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def on_a_saturday(): |
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"""Factory function to generate Saturday matcher.""" |
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return IsGivenDayOfWeek(5) |
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class SampleTest(unittest.TestCase): |
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def testDateIsOnASaturday(self): |
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"""Example of successful match.""" |
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d = datetime.date(2008, 04, 26) |
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assert_that(d, is_(on_a_saturday())) |
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def testFailsWithMismatchedDate(self): |
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"""Example of what happens with date that doesn't match.""" |
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d = datetime.date(2008, 04, 06) |
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assert_that(d, is_(on_a_saturday())) |
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def testFailsWithNonDate(self): |
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"""Example of what happens with object that isn't a date.""" |
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d = 'oops' |
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assert_that(d, is_(on_a_saturday())) |
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if __name__ == '__main__': |
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unittest.main() |
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hamcrest /
PyHamcrest
