Stop batch comment actions showing on commit discussions

Closes https://gitlab.com/gitlab-org/gitlab-ee/issues/8052

app/assets/javascripts/notes/components/note_form.vue

@@ -204,7 +204,7 @@ js-autosize markdown-area js-vue-issue-note-form js-vue-textarea"
         class="note-form-actions clearfix"
       >
         <template
-          v-if="withBatchComments && noteId === ''"
+          v-if="showBatchCommentsActions"
         >
           <p
             v-if="discussion && discussion.id"

ee/app/assets/javascripts/batch_comments/mixins/note_form.js

@@ -6,6 +6,9 @@ export default {
       withBatchComments: state => state.batchComments && state.batchComments.withBatchComments,
     }),
     ...mapGetters('batchComments', ['hasDrafts']),
+    showBatchCommentsActions() {
+      return this.withBatchComments && this.noteId === '' && !this.discussion.for_commit;
+    },
   },
   methods: {
     shouldBeResolved(resolveStatus) {

ee/changelogs/unreleased/batch-comments-commit-comment.yml

+---
+title: Stops showing review actions on commit discussions in merge requests
+merge_request: 8007
+author:
+type: fixed

ee/spec/javascripts/notes/components/note_form_spec.js

+import Vue from 'vue';
+import { createStore } from '~/mr_notes/stores';
+import issueNoteForm from '~/notes/components/note_form.vue';
+import { noteableDataMock, discussionMock, notesDataMock } from 'spec/notes/mock_data';
+
+describe('issue_note_form component', () => {
+  let store;
+  let vm;
+  let props;
+
+  beforeEach(() => {
+    const Component = Vue.extend(issueNoteForm);
+
+    store = createStore();
+    store.dispatch('setNoteableData', noteableDataMock);
+    store.dispatch('setNotesData', notesDataMock);
+
+    props = {
+      isEditing: false,
+      noteBody: 'Magni suscipit eius consectetur enim et ex et commodi.',
+      discussion: { ...discussionMock, for_commit: false },
+    };
+
+    vm = new Component({
+      store,
+      propsData: props,
+    }).$mount();
+  });
+
+  afterEach(() => {
+    vm.$destroy();
+  });
+
+  describe('with batch comments', () => {
+    beforeEach(done => {
+      store
+        .dispatch('batchComments/enableBatchComments')
+        .then(vm.$nextTick)
+        .then(done)
+        .catch(done.fail);
+    });
+
+    it('hides actions for commits', done => {
+      vm.discussion.for_commit = true;
+
+      vm.$nextTick(() => {
+        expect(vm.$el.querySelector('.note-form-actions').textContent).not.toContain(
+          'Start a review',
+        );
+
+        done();
+      });
+    });
+  });
+});