test(@toss/utils): Add uniq Function Test Code (toss#315)

* test(@toss/utils): Add uniq Function Test Code

* fix(@toss/utils): Fix uniq Function Test Code

packages/common/utils/src/uniq.spec.ts

@@ -0,0 +1,34 @@
+import { uniq } from './uniq';
+
+describe('uniq', () => {
+  it('should return an array', () => {
+    const inputList = [1, 2, 3, 4, 5];
+    const uniqOutputList = uniq(inputList);
+
+    expect(Array.isArray(uniqOutputList)).toBeTruthy();
+  });
+
+  it('should return an empty array if an empty array is passed as an argument', () => {
+    expect(uniq([])).toEqual([]);
+  });
+
+  it('should remove duplicate values from a array', () => {
+    const inputList = [1, 2, 1, 3, 2, 4, 1, 5, 1];
+    const expectedList = [1, 2, 3, 4, 5];
+
+    const uniqOutputList = uniq(inputList);
+
+    expect(uniqOutputList).toEqual(expectedList);
+    expect(uniqOutputList.length).toBe(expectedList.length);
+  });
+
+  it('should return an array with the same values as the original array if there are no duplicates', () => {
+    const inputList = [1, 2, 3, 4, 5];
+    const expectedList = [1, 2, 3, 4, 5];
+
+    const uniqOutputList = uniq(inputList);
+
+    expect(uniqOutputList).toEqual(expectedList);
+    expect(uniqOutputList.length).toBe(expectedList.length);
+  });
+});