expect(object).toHaveUndefined('memberName');

[JamieMason]

Use case is in ui-router state params for example, where you might want to assert that a state of a given name exists as part of the state's configuration, but that no default value has been assigned to it.

Current spec

it('should not set a default value for the dateFrom param', function() {
    expect($state.params).toHaveMember('dateFrom');
    expect($state.params.dateFrom).toBeUndefined();
});

Current output

Expected member "dateFrom" of Object({  }) to be member.
Expected undefined not to be undefined

Preferred spec

it('should not set a default value for the dateFrom param', function() {
    expect($state.params).toHaveUndefined('dateFrom');
});

Preferred output

Expected Object({  }) to have undefined member "dateFrom".

[PaulTondeur]

I would like to up-vote this request.

[jacobwardio]

PR at #69