1 files changed, 110 insertions, 0 deletions
diff --git a/spec/frontend/avatar_helper_spec.js b/spec/frontend/avatar_helper_spec.js
new file mode 100644
index 00000000000..c4da7189751
--- /dev/null
+++ b/spec/frontend/avatar_helper_spec.js
@@ -0,0 +1,110 @@
+import { TEST_HOST } from 'spec/test_constants';
+import { getFirstCharacterCapitalized } from '~/lib/utils/text_utility';
+import {
+  DEFAULT_SIZE_CLASS,
+  IDENTICON_BG_COUNT,
+  renderAvatar,
+  renderIdenticon,
+  getIdenticonBackgroundClass,
+  getIdenticonTitle,
+} from '~/helpers/avatar_helper';
+
+function matchAll(str) {
+  return new RegExp(`^${str}$`);
+}
+
+describe('avatar_helper', () => {
+  describe('getIdenticonBackgroundClass', () => {
+    it('returns identicon bg class from id that is a number', () => {
+      expect(getIdenticonBackgroundClass(1)).toEqual('bg2');
+    });
+
+    it('returns identicon bg class from id that is a string', () => {
+      expect(getIdenticonBackgroundClass('1')).toEqual('bg2');
+    });
+
+    it('returns identicon bg class from id that is a GraphQL string id', () => {
+      expect(getIdenticonBackgroundClass('gid://gitlab/Project/1')).toEqual('bg2');
+    });
+
+    it('returns identicon bg class from unparsable string', () => {
+      expect(getIdenticonBackgroundClass('gid://gitlab/')).toEqual('bg1');
+    });
+
+    it(`wraps around if id is bigger than ${IDENTICON_BG_COUNT}`, () => {
+      expect(getIdenticonBackgroundClass(IDENTICON_BG_COUNT + 4)).toEqual('bg5');
+      expect(getIdenticonBackgroundClass(IDENTICON_BG_COUNT * 5 + 6)).toEqual('bg7');
+    });
+  });
+
+  describe('getIdenticonTitle', () => {
+    it('returns identicon title from name', () => {
+      expect(getIdenticonTitle('Lorem')).toEqual('L');
+      expect(getIdenticonTitle('dolar-sit-amit')).toEqual('D');
+      expect(getIdenticonTitle('%-with-special-chars')).toEqual('%');
+    });
+
+    it('returns space if name is falsey', () => {
+      expect(getIdenticonTitle('')).toEqual(' ');
+      expect(getIdenticonTitle(null)).toEqual(' ');
+    });
+  });
+
+  describe('renderIdenticon', () => {
+    it('renders with the first letter as title and bg based on id', () => {
+      const entity = {
+        id: IDENTICON_BG_COUNT + 3,
+        name: 'Xavior',
+      };
+      const options = {
+        sizeClass: 's32',
+      };
+
+      const result = renderIdenticon(entity, options);
+
+      expect(result).toHaveClass(`identicon ${options.sizeClass} bg4`);
+      expect(result).toHaveText(matchAll(getFirstCharacterCapitalized(entity.name)));
+    });
+
+    it('renders with defaults, if no options are given', () => {
+      const entity = {
+        id: 1,
+        name: 'tanuki',
+      };
+
+      const result = renderIdenticon(entity);
+
+      expect(result).toHaveClass(`identicon ${DEFAULT_SIZE_CLASS} bg2`);
+      expect(result).toHaveText(matchAll(getFirstCharacterCapitalized(entity.name)));
+    });
+  });
+
+  describe('renderAvatar', () => {
+    it('renders an image with the avatarUrl', () => {
+      const avatarUrl = `${TEST_HOST}/not-real-assets/test.png`;
+
+      const result = renderAvatar({
+        avatar_url: avatarUrl,
+      });
+
+      expect(result).toBeMatchedBy('img');
+      expect(result).toHaveAttr('src', avatarUrl);
+      expect(result).toHaveClass(DEFAULT_SIZE_CLASS);
+    });
+
+    it('renders an identicon if no avatarUrl', () => {
+      const entity = {
+        id: 1,
+        name: 'walrus',
+      };
+      const options = {
+        sizeClass: 's16',
+      };
+
+      const result = renderAvatar(entity, options);
+
+      expect(result).toHaveClass(`identicon ${options.sizeClass} bg2`);
+      expect(result).toHaveText(matchAll(getFirstCharacterCapitalized(entity.name)));
+    });
+  });
+});