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diff --git a/spec/frontend/repository/components/blob_content_viewer_spec.js b/spec/frontend/repository/components/blob_content_viewer_spec.js
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+++ b/spec/frontend/repository/components/blob_content_viewer_spec.js
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+import { GlLoadingIcon } from '@gitlab/ui';
+import { shallowMount } from '@vue/test-utils';
+import BlobContent from '~/blob/components/blob_content.vue';
+import BlobHeader from '~/blob/components/blob_header.vue';
+import BlobContentViewer from '~/repository/components/blob_content_viewer.vue';
+
+let wrapper;
+const mockData = {
+  name: 'some_file.js',
+  size: 123,
+  rawBlob: 'raw content',
+  type: 'text',
+  fileType: 'text',
+  tooLarge: false,
+  path: 'some_file.js',
+  editBlobPath: 'some_file.js/edit',
+  ideEditPath: 'some_file.js/ide/edit',
+  storedExternally: false,
+  rawPath: 'some_file.js',
+  externalStorageUrl: 'some_file.js',
+  replacePath: 'some_file.js/replace',
+  deletePath: 'some_file.js/delete',
+  canLock: true,
+  isLocked: false,
+  lockLink: 'some_file.js/lock',
+  canModifyBlob: true,
+  forkPath: 'some_file.js/fork',
+  simpleViewer: {},
+  richViewer: {},
+};
+
+function factory(path, loading = false) {
+  wrapper = shallowMount(BlobContentViewer, {
+    propsData: {
+      path,
+    },
+    mocks: {
+      $apollo: {
+        queries: {
+          blobInfo: {
+            loading,
+          },
+        },
+      },
+    },
+  });
+
+  wrapper.setData({ blobInfo: mockData });
+}
+
+describe('Blob content viewer component', () => {
+  const findLoadingIcon = () => wrapper.find(GlLoadingIcon);
+  const findBlobHeader = () => wrapper.find(BlobHeader);
+  const findBlobContent = () => wrapper.find(BlobContent);
+
+  afterEach(() => {
+    wrapper.destroy();
+  });
+
+  beforeEach(() => {
+    factory('some_file.js');
+  });
+
+  it('renders a GlLoadingIcon component', () => {
+    factory('some_file.js', true);
+
+    expect(findLoadingIcon().exists()).toBe(true);
+  });
+
+  it('renders a BlobHeader component', () => {
+    expect(findBlobHeader().exists()).toBe(true);
+  });
+
+  it('renders a BlobContent component', () => {
+    expect(findBlobContent().exists()).toBe(true);
+
+    expect(findBlobContent().props('loading')).toEqual(false);
+    expect(findBlobContent().props('content')).toEqual('raw content');
+    expect(findBlobContent().props('isRawContent')).toBe(true);
+    expect(findBlobContent().props('activeViewer')).toEqual({
+      fileType: 'text',
+      tooLarge: false,
+      type: 'text',
+    });
+  });
+});