function it_should_change_the_case_of_the_values_for_an_array() { $this::array_change_value_case(['Foo' => 'Ädam', 'bar' => 'Böb', 'foobar' => 'fOo'])->shouldBeEqualTo(['Foo' => 'ädam', 'bar' => 'böb', 'foobar' => 'foo']); }