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How to use pytest_assertrepr_compare method in Pytest

Best Python code snippet using pytest

__init__.py

Source:__init__.py

...96          to protect later % formatting.97        The result can be formatted by util.format_explanation() for98        pretty printing.99        """100        hook_result = item.ihook.pytest_assertrepr_compare(101            config=item.config, op=op, left=left, right=right102        )103        for new_expl in hook_result:104            if new_expl:105                new_expl = truncate.truncate_if_required(new_expl, item)106                new_expl = [line.replace("\n", "\\n") for line in new_expl]107                res = six.text_type("\n~").join(new_expl)108                if item.config.getvalue("assertmode") == "rewrite":109                    res = res.replace("%", "%%")110                return res111    util._reprcompare = callbinrepr112def pytest_runtest_teardown(item):113    util._reprcompare = None114def pytest_sessionfinish(session):...

test_plugin.py

Source:test_plugin.py

...46        }),47        'urls': int48    })49    _ = expected == TEST_DATA50    msgs = pytest_assertrepr_compare('==', expected, TEST_DATA)51    assert S(Unordered([52        "failed due to validation error(s):",53        "- info.platform: not a valid value (actual: 'unix')",54        "- info.description: length of value must be at most 10 (actual: 'lorem ipsum lorem ipsum')",55        "- info.downloads: expected list (actual: {'last_month': 0})",56        "- info.classifiers: expected dict (actual: ['Development Status :: 6 - Mature', 'Intended Audience :: Developers'])",57        "- urls: expected int (actual: [{}, {}])",58        Any(59            "- releases: extra keys not allowed (actual: {'3.0.7': [], '3.1.3': []})",60            "- releases: extra keys not allowed (actual: {'3.1.3': [], '3.0.7': []})",61        ),62    ])) == msgs63    # TODO: How to assert the actual output?64    # assert expected == resp.json()65    # from _pytest.capture import capfd66    # out, err = capfd.readouterr()67    # assert out == \68    #     "assert failed due to validation error(s):\n"69    #     "- info.platform: not a valid value\n"70    #     "- info.description: length of value must be at most 10\n"71    #     "- info.downloads: expected list\n"72    #     "- info.classifiers: expected dict\n"73    #     "- urls: expected int\n"74    #     "- releases: extra keys not allowed"75    # ]76def test_unordered():77    actual = ["foobar", "barbaz", "baz"]78    expected = S(Unordered(["foo", "bar", "baz"]))79    _ = expected == actual80    msgs = pytest_assertrepr_compare('==', expected, actual)81    assert S(Unordered([82        "failed due to validation error(s):",83        "- Element #0 (foobar) is not valid against any validator",84        "- Element #1 (barbaz) is not valid against any validator",85    ])) == msgs86def test_list_error_reporting():87    # OK: List of objects88    sch = S({'foo': [int]})89    data = {'foo': ['a', 'b']}90    assert (sch == data) is False91    assert len(sch.error.errors) == 292    assert sch.error.errors[0].path == ['foo', 0]93    assert sch.error.errors[1].path == ['foo', 1]94    msgs = pytest_assertrepr_compare('==', sch, data)95    assert msgs == [96        "failed due to validation error(s):",97        "- foo.0: expected int (actual: 'a')",98        "- foo.1: expected int (actual: 'b')"99    ]100    sch = S({'foo': [{'id': int}]})101    data = {'foo': [{'id': 'bar'}, {'id': 'bar2'}]}102    assert (sch == data) is False103    assert len(sch.error.errors) == 1  # XXX: Until https://github.com/alecthomas/voluptuous/pull/330 gets merged104    assert sch.error.errors[0].path == ['foo', 0, 'id']105    msgs = pytest_assertrepr_compare('==', sch, data)106    assert msgs == [107        "failed due to validation error(s):",108        "- foo.0.id: expected int (actual: 'bar')"...

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Pytest Fixtures: Check out how to implement pytest fixtures for your end-to-end testing needs.
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