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How to use test_extracting_zero_arg_method method in assertpy

Best Python code snippet using assertpy_python

test_extracting.py

...42def test_extracting_property():43    assert_that(people).extracting('first_name').contains('Fred', 'John')44def test_extracting_multiple_properties():45    assert_that(people).extracting('first_name', 'last_name', 'shoe_size').contains(('Fred', 'Smith', 12), ('John', 'Jones', 9.5))46def test_extracting_zero_arg_method():47    assert_that(people).extracting('full_name').contains('Fred Smith', 'John Jones')48def test_extracting_property_and_method():49    assert_that(people).extracting('first_name', 'full_name').contains(('Fred', 'Fred Smith'), ('John', 'John Jones'))50def test_extracting_dict():51    people_as_dicts = [{'first_name': p.first_name, 'last_name': p.last_name} for p in people]52    assert_that(people_as_dicts).extracting('first_name').contains('Fred', 'John')53    assert_that(people_as_dicts).extracting('last_name').contains('Smith', 'Jones')54def test_extracting_bad_val_failure():55    try:56        assert_that(123).extracting('bar')57        fail('should have raised error')58    except TypeError as ex:59        assert_that(str(ex)).is_equal_to('val is not iterable')60def test_extracting_bad_val_str_failure():...

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