1 files changed, 33 insertions, 0 deletions
diff --git a/spec/frontend/repository/utils/readme_spec.js b/spec/frontend/repository/utils/readme_spec.js
new file mode 100644
index 00000000000..6b7876c8947
--- /dev/null
+++ b/spec/frontend/repository/utils/readme_spec.js
@@ -0,0 +1,33 @@
+import { readmeFile } from '~/repository/utils/readme';
+
+describe('readmeFile', () => {
+  describe('markdown files', () => {
+    it('returns markdown file', () => {
+      expect(readmeFile([{ name: 'README' }, { name: 'README.md' }])).toEqual({
+        name: 'README.md',
+      });
+
+      expect(readmeFile([{ name: 'README' }, { name: 'index.md' }])).toEqual({
+        name: 'index.md',
+      });
+    });
+  });
+
+  describe('plain files', () => {
+    it('returns plain file', () => {
+      expect(readmeFile([{ name: 'README' }, { name: 'TEST.md' }])).toEqual({
+        name: 'README',
+      });
+
+      expect(readmeFile([{ name: 'readme' }, { name: 'TEST.md' }])).toEqual({
+        name: 'readme',
+      });
+    });
+  });
+
+  describe('non-previewable file', () => {
+    it('returns undefined', () => {
+      expect(readmeFile([{ name: 'index.js' }, { name: 'TEST.md' }])).toBe(undefined);
+    });
+  });
+});