test: no default

babel · Apr 16, 2020 · db965f6 · db965f6
1 parent f8233c4
commit db965f6
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/packages/babel-preset-env/test/normalize-options.spec.js b/packages/babel-preset-env/test/normalize-options.spec.js
@@ -203,6 +203,10 @@ describe("normalize-options", () => {
       expect(validateStringOption("test", "value", "default")).toBe("value");
     });
 
+    it("no default returns undefined", () => {
+      expect(validateStringOption("test", undefined)).toBe(undefined);
+    });
+
     it("array option is invalid", () => {
       expect(() => {
         validateStringOption("test", [], "default");