assertObjectNotEquals()

[lstrojny]

assertObjectEquals is great for VOs and it would be lovely to have the opposite available as well, assertObjectNotEquals. Sure, it’s trivial to polyfill but still it would be lovely if PHPUnit could offer it out of the box.

public static function assertObjectNotEquals(object $expected, object $actual, string $method = 'equals', string $message = ''): void
{
    self::assertThat(
        $actual,
        self::logicalNot(self::objectEquals($expected, $method)),
        $message,
    );
}

[sebastianbergmann]

Back when assertObjectEquals() was implemented, I wrote in #4467

An inverse of assertObjectEquals() does not make sense to us and will not be implemented.

I wrote the above because I was not convinced that could be inversed as easily as you propose. Of course, I am happy to be proven wrong. :)

Quoting again from #4467:

• A method with name $method must exist on the $actual object
• The method must accept exactly one argument
• The respective parameter must have a declared type
• The $expected object must be compatible with this declared type
• The method must have a declared bool return type

If any of the aforementioned assumptions is not fulfilled or if $actual->$method($expected) returns false then the assertion fails.

An exception is raised if any of the assumptions is not met.

Given the above, do you still think that "just" using self::logicalNot(self::objectEquals($expected, $method)) instead of self::objectEquals($expected, $method) is good enough to achieve what you desire?

[lstrojny]

Sure, that’s fine. The preconditions stay the same and error if unmet and if the equals method returns false, an assertion failure is recorded.

[lstrojny]

Thanks!