forked from mirrors/gecko-dev
34 lines
1 KiB
Python
34 lines
1 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at http://mozilla.org/MPL/2.0/.
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import os
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import inspect
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def expect(path, actual):
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"""
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Assert that the content of the file at `path` contains `actual`.
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If the environment variable `UPDATE_EXPECT` is set, the path content is updated to `actual`.
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This allows to update the file contents easily.
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"""
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callerframerecord = inspect.stack()[1]
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frame = callerframerecord[0]
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info = inspect.getframeinfo(frame)
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msg = f"""
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Unexpected content in {path} (at {info.filename}:{info.lineno})
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If the code generation was changed,
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run the test suite again with `UPDATE_EXPECT=1` set to update the test files.
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""".strip()
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if "UPDATE_EXPECT" in os.environ:
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with open(path, "w") as file:
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file.write(actual)
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expected = None
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with open(path, "r") as file:
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expected = file.read()
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assert actual == expected, msg
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