diff --git a/packages/cli/tests/unit/utils.tests.ts b/packages/cli/tests/unit/utils.tests.ts
index d607137ad7..55408d9b77 100644
--- a/packages/cli/tests/unit/utils.tests.ts
+++ b/packages/cli/tests/unit/utils.tests.ts
@@ -13,6 +13,7 @@ import activate from "../../src/activate";
 import AzureAccountManager from "../../src/commonlib/azureLogin";
 import { UserSettings } from "../../src/userSetttings";
 import {
+  editDistance,
   flattenNodes,
   getColorizedString,
   getSettingsVersion,
@@ -416,3 +417,28 @@ describe("activate", async () => {
     }
   });
 });
+
+describe("editDistance", async () => {
+  it("happy", async () => {
+    {
+      const d = editDistance("a", "b");
+      expect(d).equals(1);
+    }
+    {
+      const d = editDistance("abc", "abd");
+      expect(d).equals(1);
+    }
+    {
+      const d = editDistance("abc", "aabbc");
+      expect(d).equals(2);
+    }
+    {
+      const d = editDistance("", "abc");
+      expect(d).equals(3);
+    }
+    {
+      const d = editDistance("abc", "");
+      expect(d).equals(3);
+    }
+  });
+});