Add IssuableBody component

Adds IssuableBody component to use with
Issuable Show app.

app/assets/javascripts/issuable_show/components/issuable_body.vue

+<script>
+import { GlLink } from '@gitlab/ui';
+
+import TimeAgoTooltip from '~/vue_shared/components/time_ago_tooltip.vue';
+
+import IssuableTitle from './issuable_title.vue';
+import IssuableDescription from './issuable_description.vue';
+import IssuableEditForm from './issuable_edit_form.vue';
+
+export default {
+  components: {
+    GlLink,
+    TimeAgoTooltip,
+    IssuableTitle,
+    IssuableDescription,
+    IssuableEditForm,
+  },
+  props: {
+    issuable: {
+      type: Object,
+      required: true,
+    },
+    statusBadgeClass: {
+      type: String,
+      required: true,
+    },
+    statusIcon: {
+      type: String,
+      required: true,
+    },
+    enableEdit: {
+      type: Boolean,
+      required: true,
+    },
+    enableAutocomplete: {
+      type: Boolean,
+      required: true,
+    },
+    editFormVisible: {
+      type: Boolean,
+      required: true,
+    },
+    descriptionPreviewPath: {
+      type: String,
+      required: true,
+    },
+    descriptionHelpPath: {
+      type: String,
+      required: true,
+    },
+  },
+  computed: {
+    isUpdated() {
+      return Boolean(this.issuable.updatedAt);
+    },
+    updatedBy() {
+      return this.issuable.updatedBy;
+    },
+  },
+};
+</script>
+
+<template>
+  <div class="issue-details issuable-details">
+    <div class="detail-page-description content-block">
+      <issuable-edit-form
+        v-if="editFormVisible"
+        :issuable="issuable"
+        :enable-autocomplete="enableAutocomplete"
+        :description-preview-path="descriptionPreviewPath"
+        :description-help-path="descriptionHelpPath"
+      >
+        <template #edit-form-actions="issuableMeta">
+          <slot name="edit-form-actions" v-bind="issuableMeta"></slot>
+        </template>
+      </issuable-edit-form>
+      <template v-else>
+        <issuable-title
+          :issuable="issuable"
+          :status-badge-class="statusBadgeClass"
+          :status-icon="statusIcon"
+          :enable-edit="enableEdit"
+          @edit-issuable="$emit('edit-issuable', $event)"
+        >
+          <template #status-badge>
+            <slot name="status-badge"></slot>
+          </template>
+        </issuable-title>
+        <issuable-description v-if="issuable.descriptionHtml" :issuable="issuable" />
+        <small v-if="isUpdated" class="edited-text gl-font-sm!">
+          {{ __('Edited') }}
+          <time-ago-tooltip :time="issuable.updatedAt" tooltip-placement="bottom" />
+          <span v-if="updatedBy">
+            {{ __('by') }}
+            <gl-link :href="updatedBy.webUrl" class="author-link gl-font-sm!">
+              <span>{{ updatedBy.name }}</span>
+            </gl-link>
+          </span>
+        </small>
+      </template>
+    </div>
+  </div>
+</template>

locale/gitlab.pot

@@ -9533,6 +9533,9 @@ msgstr ""
 msgid "Edit your most recent comment in a thread (from an empty textarea)"
 msgstr ""
 
+msgid "Edited"
+msgstr ""
+
 msgid "Edited %{timeago}"
 msgstr ""
 

spec/frontend/issuable_show/components/issuable_body_spec.js

+import { shallowMount } from '@vue/test-utils';
+
+import IssuableBody from '~/issuable_show/components/issuable_body.vue';
+
+import IssuableTitle from '~/issuable_show/components/issuable_title.vue';
+import IssuableDescription from '~/issuable_show/components/issuable_description.vue';
+import IssuableEditForm from '~/issuable_show/components/issuable_edit_form.vue';
+import TimeAgoTooltip from '~/vue_shared/components/time_ago_tooltip.vue';
+
+import { mockIssuableShowProps, mockIssuable } from '../mock_data';
+
+jest.mock('~/autosave');
+
+const issuableBodyProps = {
+  ...mockIssuableShowProps,
+  issuable: mockIssuable,
+};
+
+const createComponent = (propsData = issuableBodyProps) =>
+  shallowMount(IssuableBody, {
+    propsData,
+    stubs: {
+      IssuableTitle,
+      IssuableDescription,
+      IssuableEditForm,
+      TimeAgoTooltip,
+    },
+    slots: {
+      'status-badge': 'Open',
+      'edit-form-actions': `
+        <button class="js-save">Save changes</button>
+        <button class="js-cancel">Cancel</button>
+      `,
+    },
+  });
+
+describe('IssuableBody', () => {
+  let wrapper;
+
+  beforeEach(() => {
+    wrapper = createComponent();
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  describe('computed', () => {
+    describe('isUpdated', () => {
+      it.each`
+        updatedAt                 | returnValue
+        ${mockIssuable.updatedAt} | ${true}
+        ${null}                   | ${false}
+        ${''}                     | ${false}
+      `(
+        'returns $returnValue when value of `updateAt` prop is `$updatedAt`',
+        async ({ updatedAt, returnValue }) => {
+          wrapper.setProps({
+            issuable: {
+              ...mockIssuable,
+              updatedAt,
+            },
+          });
+
+          await wrapper.vm.$nextTick();
+
+          expect(wrapper.vm.isUpdated).toBe(returnValue);
+        },
+      );
+    });
+
+    describe('updatedBy', () => {
+      it('returns value of `issuable.updatedBy`', () => {
+        expect(wrapper.vm.updatedBy).toBe(mockIssuable.updatedBy);
+      });
+    });
+  });
+
+  describe('template', () => {
+    it('renders issuable-title component', () => {
+      const titleEl = wrapper.find(IssuableTitle);
+
+      expect(titleEl.exists()).toBe(true);
+      expect(titleEl.props()).toMatchObject({
+        issuable: issuableBodyProps.issuable,
+        statusBadgeClass: issuableBodyProps.statusBadgeClass,
+        statusIcon: issuableBodyProps.statusIcon,
+        enableEdit: issuableBodyProps.enableEdit,
+      });
+    });
+
+    it('renders issuable-description component', () => {
+      const descriptionEl = wrapper.find(IssuableDescription);
+
+      expect(descriptionEl.exists()).toBe(true);
+      expect(descriptionEl.props('issuable')).toEqual(issuableBodyProps.issuable);
+    });
+
+    it('renders issuable edit info', () => {
+      const editedEl = wrapper.find('small');
+      const sanitizedText = editedEl
+        .text()
+        .replace(/\n/g, ' ')
+        .replace(/\s+/g, ' ');
+
+      expect(sanitizedText).toContain('Edited');
+      expect(sanitizedText).toContain('ago');
+      expect(sanitizedText).toContain(`by ${mockIssuable.updatedBy.name}`);
+    });
+
+    it('renders issuable-edit-form when `editFormVisible` prop is true', async () => {
+      wrapper.setProps({
+        editFormVisible: true,
+      });
+
+      await wrapper.vm.$nextTick();
+
+      const editFormEl = wrapper.find(IssuableEditForm);
+      expect(editFormEl.exists()).toBe(true);
+      expect(editFormEl.props()).toMatchObject({
+        issuable: issuableBodyProps.issuable,
+        enableAutocomplete: issuableBodyProps.enableAutocomplete,
+        descriptionPreviewPath: issuableBodyProps.descriptionPreviewPath,
+        descriptionHelpPath: issuableBodyProps.descriptionHelpPath,
+      });
+      expect(editFormEl.find('button.js-save').exists()).toBe(true);
+      expect(editFormEl.find('button.js-cancel').exists()).toBe(true);
+    });
+
+    describe('events', () => {
+      it('component emits `edit-issuable` event bubbled via issuable-title', () => {
+        const issuableTitle = wrapper.find(IssuableTitle);
+
+        issuableTitle.vm.$emit('edit-issuable');
+
+        expect(wrapper.emitted('edit-issuable')).toBeTruthy();
+      });
+    });
+  });
+});

spec/frontend/issuable_show/mock_data.js

@@ -11,6 +11,7 @@ export const mockIssuable = {
   state: 'opened',
   blocked: false,
   confidential: false,
+  updatedBy: issuable.author,
   currentUserTodos: {
     nodes: [
       {