1 files changed, 97 insertions, 0 deletions
diff --git a/spec/frontend/pages/shared/wikis/components/wiki_content_spec.js b/spec/frontend/pages/shared/wikis/components/wiki_content_spec.js
new file mode 100644
index 00000000000..365bb878485
--- /dev/null
+++ b/spec/frontend/pages/shared/wikis/components/wiki_content_spec.js
@@ -0,0 +1,97 @@
+import { GlSkeletonLoader, GlAlert } from '@gitlab/ui';
+import { nextTick } from 'vue';
+import { shallowMount } from '@vue/test-utils';
+import MockAdapter from 'axios-mock-adapter';
+import WikiContent from '~/pages/shared/wikis/components/wiki_content.vue';
+import { renderGFM } from '~/pages/shared/wikis/render_gfm_facade';
+import axios from '~/lib/utils/axios_utils';
+import httpStatus from '~/lib/utils/http_status';
+import waitForPromises from 'helpers/wait_for_promises';
+
+jest.mock('~/pages/shared/wikis/render_gfm_facade');
+
+describe('pages/shared/wikis/components/wiki_content', () => {
+  const PATH = '/test';
+  let wrapper;
+  let mock;
+
+  function buildWrapper(propsData = {}) {
+    wrapper = shallowMount(WikiContent, {
+      propsData: { getWikiContentUrl: PATH, ...propsData },
+      stubs: {
+        GlSkeletonLoader,
+        GlAlert,
+      },
+    });
+  }
+
+  beforeEach(() => {
+    mock = new MockAdapter(axios);
+  });
+
+  afterEach(() => {
+    wrapper.destroy();
+    wrapper = null;
+  });
+
+  const findGlAlert = () => wrapper.findComponent(GlAlert);
+  const findGlSkeletonLoader = () => wrapper.findComponent(GlSkeletonLoader);
+  const findContent = () => wrapper.find('[data-testid="wiki_page_content"]');
+
+  describe('when loading content', () => {
+    beforeEach(() => {
+      buildWrapper();
+    });
+
+    it('renders skeleton loader', () => {
+      expect(findGlSkeletonLoader().exists()).toBe(true);
+    });
+
+    it('does not render content container or error alert', () => {
+      expect(findGlAlert().exists()).toBe(false);
+      expect(findContent().exists()).toBe(false);
+    });
+  });
+
+  describe('when content loads successfully', () => {
+    const content = 'content';
+
+    beforeEach(() => {
+      mock.onGet(PATH, { params: { render_html: true } }).replyOnce(httpStatus.OK, { content });
+      buildWrapper();
+      return waitForPromises();
+    });
+
+    it('renders content container', () => {
+      expect(findContent().text()).toBe(content);
+    });
+
+    it('does not render skeleton loader or error alert', () => {
+      expect(findGlAlert().exists()).toBe(false);
+      expect(findGlSkeletonLoader().exists()).toBe(false);
+    });
+
+    it('calls renderGFM after nextTick', async () => {
+      await nextTick();
+
+      expect(renderGFM).toHaveBeenCalledWith(wrapper.element);
+    });
+  });
+
+  describe('when loading content fails', () => {
+    beforeEach(() => {
+      mock.onGet(PATH).replyOnce(httpStatus.INTERNAL_SERVER_ERROR, '');
+      buildWrapper();
+      return waitForPromises();
+    });
+
+    it('renders error alert', () => {
+      expect(findGlAlert().exists()).toBe(true);
+    });
+
+    it('does not render skeleton loader or content container', () => {
+      expect(findContent().exists()).toBe(false);
+      expect(findGlSkeletonLoader().exists()).toBe(false);
+    });
+  });
+});