forked from svrjs/svrjs
77 lines
2.5 KiB
JavaScript
77 lines
2.5 KiB
JavaScript
const deepClone = require("../../src/utils/deepClone.js");
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describe("Deep cloning function", () => {
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test("should clone a simple object", () => {
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const original = { a: 1, b: 2 };
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const cloned = deepClone(original);
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expect(cloned).toEqual(original);
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expect(cloned).not.toBe(original);
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});
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test("should clone a nested object", () => {
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const original = { a: 1, b: { c: 2, d: { e: 3 } } };
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const cloned = deepClone(original);
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expect(cloned).toEqual(original);
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expect(cloned).not.toBe(original);
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expect(cloned.b).not.toBe(original.b);
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expect(cloned.b.d).not.toBe(original.b.d);
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});
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test("should clone an array", () => {
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const original = [1, 2, 3];
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const cloned = deepClone(original);
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expect(cloned).toEqual(original);
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expect(cloned).not.toBe(original);
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});
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test("should clone an array of objects", () => {
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const original = [{ a: 1 }, { b: 2 }];
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const cloned = deepClone(original);
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expect(cloned).toEqual(original);
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expect(cloned).not.toBe(original);
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expect(cloned[0]).not.toBe(original[0]);
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expect(cloned[1]).not.toBe(original[1]);
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});
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test("should clone an object with arrays", () => {
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const original = { a: [1, 2], b: { c: [3, 4] } };
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const cloned = deepClone(original);
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expect(cloned).toEqual(original);
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expect(cloned).not.toBe(original);
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expect(cloned.a).not.toBe(original.a);
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expect(cloned.b).not.toBe(original.b);
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expect(cloned.b.c).not.toBe(original.b.c);
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});
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test("should return the same value for non-objects", () => {
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expect(deepClone(null)).toBe(null);
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expect(deepClone(undefined)).toBe(undefined);
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expect(deepClone(42)).toBe(42);
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expect(deepClone("string")).toBe("string");
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expect(deepClone(true)).toBe(true);
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});
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test("should handle circular references", () => {
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const original = {};
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original.self = original;
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const cloned = deepClone(original);
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expect(cloned).not.toBe(original);
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expect(cloned.self).toBe(cloned);
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});
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test("should handle complex nested structures", () => {
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const original = {
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a: 1,
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b: [2, 3, { c: 4 }],
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d: { e: 5, f: [6, { g: 7 }] }
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};
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const cloned = deepClone(original);
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expect(cloned).toEqual(original);
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expect(cloned).not.toBe(original);
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expect(cloned.b).not.toBe(original.b);
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expect(cloned.b[2]).not.toBe(original.b[2]);
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expect(cloned.d).not.toBe(original.d);
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expect(cloned.d.f).not.toBe(original.d.f);
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expect(cloned.d.f[1]).not.toBe(original.d.f[1]);
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});
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});
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