mirror of https://github.com/webpack/webpack.git
55 lines
1.0 KiB
JavaScript
55 lines
1.0 KiB
JavaScript
|
const Queue = require("../lib/util/Queue");
|
||
|
|
|
||
|
|
describe("Queue", () => {
|
||
|
|
it("constructor", () => {
|
||
|
|
const q = new Queue(["item1", "item2", "item3"]);
|
||
|
|
|
||
|
|
q.enqueue("item1");
|
||
|
|
|
||
|
|
expect(q.dequeue()).toBe("item1");
|
||
|
|
expect(q.dequeue()).toBe("item2");
|
||
|
|
expect(q.dequeue()).toBe("item3");
|
||
|
|
expect(q.dequeue()).toBeUndefined();
|
||
|
|
|
||
|
|
q.enqueue("item2");
|
||
|
|
q.enqueue("item3");
|
||
|
|
|
||
|
|
expect(q.dequeue()).toBe("item2");
|
||
|
|
expect(q.dequeue()).toBe("item3");
|
||
|
|
expect(q.dequeue()).toBeUndefined();
|
||
|
|
});
|
||
|
|
|
||
|
|
it("enqueue and dequeue", () => {
|
||
|
|
const q = new Queue();
|
||
|
|
|
||
|
|
q.enqueue("item1");
|
||
|
|
|
||
|
|
expect(q.dequeue()).toBe("item1");
|
||
|
|
expect(q.dequeue()).toBeUndefined();
|
||
|
|
|
||
|
|
q.enqueue("item2");
|
||
|
|
q.enqueue("item3");
|
||
|
|
|
||
|
|
expect(q.dequeue()).toBe("item2");
|
||
|
|
expect(q.dequeue()).toBe("item3");
|
||
|
|
expect(q.dequeue()).toBeUndefined();
|
||
|
|
});
|
||
|
|
|
||
|
|
it("length", () => {
|
||
|
|
const q = new Queue();
|
||
|
|
|
||
|
|
q.enqueue("item1");
|
||
|
|
q.enqueue("item2");
|
||
|
|
|
||
|
|
expect(q.length).toBe(2);
|
||
|
|
|
||
|
|
q.dequeue();
|
||
|
|
|
||
|
|
expect(q.length).toBe(1);
|
||
|
|
|
||
|
|
q.dequeue();
|
||
|
|
|
||
|
|
expect(q.length).toBe(0);
|
||
|
|
});
|
||
|
|
});
|