Handle Promise rejections in mr_widget_pipeline_spec.js

spec/javascripts/vue_mr_widget/components/mr_widget_pipeline_spec.js

@@ -86,12 +86,15 @@ describe('MRWidgetPipeline', () => {
       });
 
       it('should render message with spinner', (done) => {
-        Vue.nextTick(() => {
+        Vue.nextTick()
+          .then(() => {
             expect(el.querySelector('.pipeline-id')).toBe(null);
             expect(el.innerText.trim()).toBe('Waiting for pipeline...');
             expect(el.querySelectorAll('i.fa.fa-spinner.fa-spin').length).toBe(1);
             done();
-        });
+          })
+          .then(done)
+          .catch(done.fail);
       });
     });
 
@@ -112,39 +115,47 @@ describe('MRWidgetPipeline', () => {
     it('should list single stage', (done) => {
       pipeline.details.stages.splice(0, 1);
 
-      Vue.nextTick(() => {
+      Vue.nextTick()
+        .then(() => {
           expect(el.querySelectorAll('.stage-container button').length).toEqual(1);
           expect(el.innerText).toContain('with stage');
-        done();
-      });
+        })
+        .then(done)
+        .catch(done.fail);
     });
 
     it('should not have stages when there is no stage', (done) => {
       vm.mr.pipeline.details.stages = [];
 
-      Vue.nextTick(() => {
+      Vue.nextTick()
+        .then(() => {
           expect(el.querySelectorAll('.stage-container button').length).toEqual(0);
-        done();
-      });
+        })
+        .then(done)
+        .catch(done.fail);
     });
 
     it('should not have coverage text when pipeline has no coverage info', (done) => {
       vm.mr.pipeline.coverage = null;
 
-      Vue.nextTick(() => {
+      Vue.nextTick()
+        .then(() => {
           expect(el.querySelector('.js-mr-coverage')).toEqual(null);
-        done();
-      });
+        })
+        .then(done)
+        .catch(done.fail);
     });
 
     it('should show CI error when there is a CI error', (done) => {
       vm.mr.ciStatus = null;
 
-      Vue.nextTick(() => {
+      Vue.nextTick()
+        .then(() => {
           expect(el.querySelectorAll('.js-ci-error').length).toEqual(1);
           expect(el.innerText).toContain('Could not connect to the CI server');
-        done();
-      });
+        })
+        .then(done)
+        .catch(done.fail);
     });
   });
 });