[issue38763] mock with side effect : assert_called_once returns None while call_count returns 1

[Troulet-lambert Odile]

New submission from Troulet-lambert Odile <piscvau at yahoo.fr>:

Using a mock with side_effect, I would expect that assert_called_once returns True if the mock has been called.
Yet it returns None while call_count== 1 returns True.

If this is not a bug, I would welcome some explanation in the documentation.

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components: Tests
files: bugmock.tar
messages: 356341
nosy: piscvau
priority: normal
severity: normal
status: open
type: behavior
versions: Python 3.7
Added file: https://bugs.python.org/file48706/bugmock.tar

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<https://bugs.python.org/issue38763>
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