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