test: no default

babel · May 24, 2020 · 3604bae · 3604bae
1 parent 8c56e76
commit 3604bae
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");