diff --git a/src/editors/data/services/cms/urls.test.js b/src/editors/data/services/cms/urls.test.js
new file mode 100644
index 000000000..5e3e20b46
--- /dev/null
+++ b/src/editors/data/services/cms/urls.test.js
@@ -0,0 +1,37 @@
+import {
+  unit,
+  block,
+  blockAncestor,
+} from './urls';
+
+describe('cms url methods', () => {
+  const studioEndpointUrl = 'urLgoeStOstudiO';
+  const blockId = 'blOckIDTeST123';
+  describe('unit', () => {
+    const unitUrl = {
+      data: {
+        ancestors: [
+          {
+            id: 'unItUrlTEST',
+          },
+        ],
+      },
+    };
+    it('returns url with studioEndpointUrl and unitUrl', () => {
+      expect(unit({ studioEndpointUrl, unitUrl }))
+        .toEqual(`${studioEndpointUrl}/container/${unitUrl.data.ancestors[0].id}`);
+    });
+  });
+  describe('block', () => {
+    it('returns url with studioEndpointUrl and blockId', () => {
+      expect(block({ studioEndpointUrl, blockId }))
+        .toEqual(`${studioEndpointUrl}/xblock/${blockId}`);
+    });
+  });
+  describe('blockAncestor', () => {
+    it('returns url with studioEndpointUrl, blockId and ancestor query', () => {
+      expect(blockAncestor({ studioEndpointUrl, blockId }))
+        .toEqual(`${block({ studioEndpointUrl, blockId })}?fields=ancestorInfo`);
+    });
+  });
+});
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