Chapter 8: verify

Chapter08/testing-with-jest/test/test.js

@@ -1,10 +1,8 @@
-let uppercase = require("./../uppercase");
+const uppercase = require("./../uppercase");
 
 describe("uppercase", () => {
   test("uppercase hello returns HELLO", () => {
-    uppercase = jest.fn(() => "HELLO");
-    const result = uppercase("hello");
-    expect(uppercase).toHaveBeenCalledWith("hello");
-    expect(result).toBe("HELLO");
+    expect(uppercase("hello")).toBe("HELLO");
   });
+
 });