2025-07-16 22:29:28 +08:00
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"use strict";
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2021-06-18 02:42:39 +08:00
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const LazySet = require("../lib/util/LazySet");
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describe("LazySet", () => {
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it("addAll", () => {
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const a = new Set(["a"]);
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const sut = new LazySet(a);
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const empty = new LazySet([]);
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expect(sut.size).toBe(1);
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sut.addAll(empty);
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expect(sut._toDeepMerge).toStrictEqual([]);
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expect(sut.size).toBe(1);
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const b = new Set(["b"]);
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sut.addAll(b);
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expect(sut._toMerge).toContain(b);
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expect(sut.size).toBe(2);
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const c = new LazySet(["c"]);
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sut.addAll(c);
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expect(sut._toDeepMerge).toContain(c);
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expect(sut.size).toBe(3);
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expect(sut._toDeepMerge).toStrictEqual([]);
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});
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});
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