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32 lines
1.0 KiB
Python
32 lines
1.0 KiB
Python
"""Tests for pylint."""
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import contextlib
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from pylint.testutils.unittest_linter import UnittestLinter
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@contextlib.contextmanager
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def assert_no_messages(linter: UnittestLinter):
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"""Assert that no messages are added by the given method."""
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with assert_adds_messages(linter):
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yield
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@contextlib.contextmanager
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def assert_adds_messages(linter: UnittestLinter, *messages):
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"""Assert that exactly the given method adds the given messages.
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The list of messages must exactly match *all* the messages added by the
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method. Additionally, we check to see whether the args in each message can
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actually be substituted into the message string.
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"""
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yield
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got = linter.release_messages()
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no_msg = "No message."
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expected = "\n".join(repr(m) for m in messages) or no_msg
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got_str = "\n".join(repr(m) for m in got) or no_msg
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msg = (
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"Expected messages did not match actual.\n"
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f"\nExpected:\n{expected}\n\nGot:\n{got_str}\n"
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)
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assert got == list(messages), msg
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