toBeStudlyCase() ->and('AbcDef')->toBeStudlyCase() ->and('abc-def')->not->toBeStudlyCase()->not->toBeStudlyCase() ->and('abc')->not->toBeStudlyCase(); }); test('failures', function (): void { expect('abc')->toBeStudlyCase(); })->throws(ExpectationFailedException::class); test('failures with custom message', function (): void { expect('abc')->toBeStudlyCase('oh no!'); })->throws(ExpectationFailedException::class, 'oh no!'); test('not failures', function (): void { expect('AbcDef')->not->toBeStudlyCase(); })->throws(ExpectationFailedException::class);