sphinx/tests/test_errors.py

from sphinx.errors import ExtensionError


def test_extension_error_repr():
    exc = ExtensionError("foo")
    assert repr(exc) == "ExtensionError('foo')"


def test_extension_error_with_orig_exc_repr():
    exc = ExtensionError("foo", Exception("bar"))
    assert repr(exc) == "ExtensionError('foo', Exception('bar'))"