Added limit on wrong password

tests/CircularQueue.test.ts

@@ -0,0 +1,38 @@
+import CircularQueue from '../src/utils/CircularQueue'
+
+function createTest(size: number, initWith: number) {
+    const testQueue = new CircularQueue<string>(size)
+    for (let index = 0; index < initWith; index++) {
+        testQueue.push('val:' + (index + 1))
+    }
+
+    return testQueue
+}
+
+test('Large Circular Queue', () => {
+    for (let index = 5; index < 20; index++) {
+        expect(createTest(4, index).peek()) //
+            .toBe('val:' + (index - 3))
+    }
+})
+
+test('Basic Circular Queue', () => {
+    expect(createTest(2, 10).peek()) //
+        .toBe('val:9')
+
+})
+
+test('Basic Circular Queue', () => {
+    expect(createTest(2, 1).peek()) //
+        .toBe(undefined)
+})
+
+test('Basic Circular Queue', () => {
+    expect(createTest(2, 2).peek()) //
+        .toBe('val:1')
+})
+
+test('Basic Circular Queue', () => {
+    expect(createTest(2, 3).peek()) //
+        .toBe('val:2')
+})