how to expect if item is present in the list

How can I compare a String with a List of ng-repeat:

this.TenantList = element.all(by.repeater("tenant in tenantList"));

TenantList.getAttribute('aria-label').then(function(list) {
    //label contains 10 items and I want to see if this list contains 'Test'
    expect(list).toMatch('Test');
});