Change default disabled merge request widget message to "Merge is not allowed yet"

Fix https://gitlab.com/gitlab-org/gitlab-ce/issues/39188

app/assets/javascripts/vue_merge_request_widget/components/states/mr_widget_ready_to_merge.js

@@ -290,6 +290,7 @@ export default {
                 <input
                   id="remove-source-branch-input"
                   v-model="removeSourceBranch"
+                  class="js-remove-source-branch-checkbox"
                   :disabled="isRemoveSourceBranchButtonDisabled"
                   type="checkbox"/> Remove source branch
               </label>
@@ -315,8 +316,8 @@ export default {
               </button>
             </template>
             <template v-else>
-              <span class="bold">
-                The pipeline for this merge request has not succeeded yet
+              <span class="bold js-resolve-mr-widget-items-message">
+                You can only merge once the items above are resolved
               </span>
             </template>
           </div>

changelogs/unreleased/39188-change-default-disabled-merge-message.yml

+---
+title: Update default disabled merge request widget message to reflect a general failure
+merge_request: 14960
+author:
+type: changed

spec/javascripts/vue_mr_widget/components/states/mr_widget_ready_to_merge_spec.js

@@ -43,6 +43,10 @@ describe('MRWidgetReadyToMerge', () => {
     vm = createComponent();
   });
 
+  afterEach(() => {
+    vm.$destroy();
+  });
+
   describe('props', () => {
     it('should have props', () => {
       const { mr, service } = readyToMergeComponent.props;
@@ -495,6 +499,48 @@ describe('MRWidgetReadyToMerge', () => {
     });
   });
 
+  describe('Merge controls', () => {
+    describe('when allowed to merge', () => {
+      beforeEach(() => {
+        vm = createComponent({
+          mr: { isMergeAllowed: true },
+        });
+      });
+
+      it('shows remove source branch checkbox', () => {
+        expect(vm.$el.querySelector('.js-remove-source-branch-checkbox')).toBeDefined();
+      });
+
+      it('shows modify commit message button', () => {
+        expect(vm.$el.querySelector('.js-modify-commit-message-button')).toBeDefined();
+      });
+
+      it('does not show message about needing to resolve items', () => {
+        expect(vm.$el.querySelector('.js-resolve-mr-widget-items-message')).toBeNull();
+      });
+    });
+
+    describe('when not allowed to merge', () => {
+      beforeEach(() => {
+        vm = createComponent({
+          mr: { isMergeAllowed: false },
+        });
+      });
+
+      it('does not show remove source branch checkbox', () => {
+        expect(vm.$el.querySelector('.js-remove-source-branch-checkbox')).toBeNull();
+      });
+
+      it('does not show  modify commit message button', () => {
+        expect(vm.$el.querySelector('.js-modify-commit-message-button')).toBeNull();
+      });
+
+      it('shows message to resolve all items before being allowed to merge', () => {
+        expect(vm.$el.querySelector('.js-resolve-mr-widget-items-message')).toBeDefined();
+      });
+    });
+  });
+
   describe('Commit message area', () => {
     it('when using merge commits, should show "Modify commit message" button', () => {
       const customVm = createComponent({