adding test case for irrelevant size

Author: Thiago Santos

test/test.queue-performance.js

@@ -30,4 +30,29 @@ describe('queue performance', () => {
     console.log(`Queue time: ${totalQueue[0] + totalQueue[1] / 1e9}`);
     expect(totalArray[0] + totalArray[1] / 1e9 > (totalQueue[0] + totalQueue[1] / 1e9) * 100).to.be.true;
   });
+
+  it('the time difference between array.shift and queue.shift should be irrelevant for small lengths', () => {
+    const array = [];
+    const queue = new Queue();
+    for (let i = 1; i < 10000; i++) {
+      array.push(i);
+      queue.push(i);
+    }
+
+
+    const startQueue = process.hrtime();
+    while (queue.length > 0) {
+      queue.shift();
+    }
+    const totalQueue = process.hrtime(startQueue);
+    const startArray = process.hrtime();
+    while (array.length > 0) {
+      array.shift();
+    }
+    const totalArray = process.hrtime(startArray);
+
+    console.log(`Array time: ${totalArray[0] + totalArray[1] / 1e9}`);
+    console.log(`Queue time: ${totalQueue[0] + totalQueue[1] / 1e9}`);
+    expect(totalArray[0] + totalArray[1] / 1e9 - (totalQueue[0] + totalQueue[1] / 1e9) < 0.001).to.be.true;
+  });
 })