fix(tests): remove brittle and low value tests

Testing the internal relationship between exposed API
methods is brittle as we are in effect allowing modification of
said API methods, rendering the tests moot.

Also, refactoring the exposed API methods become harder when
there's an explicit bond between them.

Author: kasperlewau

test/uiMentionController.spec.js

@@ -100,19 +100,13 @@ describe('uiMentionController', () => {
         });
 
         it('returns the given value', () => {
-          expect(mentionParser('foo')).to.eq('foo');
+          expect(mentionParser('foo bar')).to.eq('@[foo bar:1]');
         });
 
         it('filters out non matching mentions', () => {
           mentionParser('foo bar');
           expect(ctrlInstance.mentions).to.eql(mentions.slice(0,1));
         });
-
-        it('calls the controller render method with the given value', () => {
-          let spy = sinon.spy(ctrlInstance, 'render');
-          mentionParser('foo bar');
-          expect(spy).to.have.been.calledOnce.and.calledWith('@[foo bar:1]');
-        });
       });
 
       context('ngModel.$formatters', () => {
@@ -161,12 +155,6 @@ describe('uiMentionController', () => {
           ngModel.$render();
           expect($element.val()).to.eq('');
         });
-
-        it('calls the controller render method', () => {
-          let spy = sinon.spy(ctrlInstance, 'render');
-          ngModel.$render();
-          expect(spy).to.have.been.calledOnce;
-        });
       });
     });
 
@@ -221,12 +209,6 @@ describe('uiMentionController', () => {
       it('returns an HTML formatted version of the given argument', () => {
         expect(ctrlInstance.highlight(choice)).to.eq('<span>x y</span>');
       });
-
-      it('calls the controller label method internally', () => {
-        let spy = sinon.spy(ctrlInstance, 'label');
-        ctrlInstance.highlight(choice);
-        expect(spy).to.have.been.calledOnce.and.calledWith(choice);
-      });
     });
 
     context.skip('.decode()', () => {
@@ -266,18 +248,6 @@ describe('uiMentionController', () => {
         expect(ctrlInstance.mentions[0]).to.eql({ first: 'foo', last: 'bar' });
       });
 
-      it('calls the controller cancel method internally', () => {
-        let spy = sinon.spy(ctrlInstance, 'cancel');
-        ctrlInstance.select({ first: 'foo', last: 'bar' });
-        expect(spy).to.have.been.calledOnce;
-      });
-
-      it('calls the ngModel.$render method internally', () => {
-        let spy = sinon.spy(ngModel, '$render');
-        ctrlInstance.select({ first: 'foo', last: 'bar' });
-        expect(spy).to.have.been.calledOnce;
-      });
-
       it('returns nothing', () => {
         expect(ctrlInstance.select({ first: 'foo', last: 'bar' })).to.eq(undefined);
       });