clean up component tests

spec/javascripts/projects/gke_cluster_dropdowns/components/gke_machine_type_dropdown_spec.js

@@ -84,10 +84,10 @@ describe('GkeMachineTypeDropdown', () => {
       expect(vm.$el.querySelector('input').value).toBe('');
       vm.$store.commit(SET_MACHINE_TYPES, gapiMachineTypesResponseMock.items);
 
-      vm.$nextTick(() => {
+      return vm.$nextTick().then(() => {
         vm.$el.querySelector('.dropdown-content button').click();
 
-        vm.$nextTick(() => {
+        return vm.$nextTick().then(() => {
           expect(vm.$el.querySelector('input').value).toBe(selectedMachineTypeMock);
           done();
         });

spec/javascripts/projects/gke_cluster_dropdowns/components/gke_project_id_dropdown_spec.js

@@ -43,51 +43,44 @@ describe('GkeProjectIdDropdown', () => {
     });
 
     it('returns default toggle text', done => {
-      vm.$nextTick(() => {
-        vm.$nextTick(() => {
+      return vm.$nextTick().then(() => {
         vm.setItem(emptyProjectMock);
 
         expect(vm.toggleText).toBe(LABELS.DEFAULT);
         done();
       });
     });
-    });
 
     it('returns project name if project selected', done => {
-      vm.$nextTick(() => {
-        vm.$nextTick(() => {
+      return vm.$nextTick().then(() => {
         expect(vm.toggleText).toBe(selectedProjectMock.name);
         done();
       });
     });
-    });
 
     it('returns empty toggle text', done => {
-      vm.$nextTick(() => {
+      return vm.$nextTick().then(() => {
         vm.$store.commit(SET_PROJECTS, []);
         vm.setItem(emptyProjectMock);
 
-        vm.$nextTick(() => {
         expect(vm.toggleText).toBe(LABELS.EMPTY);
         done();
       });
     });
   });
-  });
 
   describe('selectItem', () => {
     it('reflects new value when dropdown item is clicked', done => {
       expect(vm.$el.querySelector('input').value).toBe('');
 
-      vm.$nextTick(() => {
-        vm.$nextTick(() => {
+      return vm.$nextTick().then(() => {
         vm.$el.querySelector('.dropdown-content button').click();
-          vm.$nextTick(() => {
+
+        return vm.$nextTick().then(() => {
           expect(vm.$el.querySelector('input').value).toBe(selectedProjectMock.projectId);
           done();
         });
       });
     });
   });
-  });
 });

spec/javascripts/projects/gke_cluster_dropdowns/components/gke_zone_dropdown_spec.js

@@ -66,10 +66,10 @@ describe('GkeZoneDropdown', () => {
       expect(vm.$el.querySelector('input').value).toBe('');
       vm.$store.commit(SET_ZONES, gapiZonesResponseMock.items);
 
-      vm.$nextTick(() => {
+      return vm.$nextTick().then(() => {
         vm.$el.querySelector('.dropdown-content button').click();
 
-        vm.$nextTick(() => {
+        return vm.$nextTick().then(() => {
           expect(vm.$el.querySelector('input').value).toBe(selectedZoneMock);
           done();
         });