test.cases.js

    describe('friends button', function() {
        describe('when user is not friend for current user', function() {
            it('should show text ...');
            it('should ... on click');
        });
        describe('when user is friend of current user', function() {
            it('should show text ...');
            it('should ... on click');
        });
        describe('when user sent invite to current user', function() {
            it('should show text ...');
            it('should ... on click');
        });
        describe('when current user sent invite to current user', function() {
            it('should show text ...');
            it('should ... on click');
        });
    });