fixed the test in dedupe

Author: d-odumosu

Sprint-1/implement/dedupe.test.js

@@ -33,11 +33,12 @@ const testCaseNoDuplicates = [
     expected: [2, 3, 4, 5, 6, 7],
   },
 ];
-const result = dedupe(input);
 
 testCaseNoDuplicates.forEach(({ input, expected }) => {
   test("given an array with no duplicates, return a copy of the array", () => {
-    expect(dedupe(input)).toEqual(expected);
+    const result = dedupe(input);
+
+    expect(result).toEqual(expected);
     expect(result).not.toBe(input);
   });
 });