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71 lines
1.8 KiB
Python
71 lines
1.8 KiB
Python
"""
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Utility tests.
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"""
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#
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# Fimfarchive, preserves stories from Fimfiction.
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# Copyright (C) 2015 Joakim Soderlund
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from fimfarchive.utils import Empty
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class TestEmpty:
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"""
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Empty tests.
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"""
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def test_empty_class_is_not_none(self):
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"""
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Tests `Empty` class is different from `None`.
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"""
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assert Empty is not None
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assert Empty != None # noqa
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def test_empty_class_evaluates_to_false(self):
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"""
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Tests `Empty` class evaluates to `False`.
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"""
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assert not Empty
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def test_empty_class_is_empty(self):
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"""
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Tests `Empty` class can be identified.
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"""
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assert Empty is Empty
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assert Empty == Empty
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def test_empty_instance_evaluates_to_false(self):
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"""
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Tests `Empty` instance evaulates to `False`
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"""
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assert not Empty()
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def test_empty_instance_is_unique(self):
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"""
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Tests `Empty` instances are unique.
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"""
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empty = Empty()
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assert isinstance(empty, Empty)
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assert empty is not Empty
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assert empty != Empty
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assert empty is not Empty()
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assert empty != Empty()
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assert empty is empty
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assert empty == empty
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