index.test.ts
3.15 KB
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// 暂时未安装依赖，无法测试
// @ts-ignore
import { describe, expect, test } from 'vitest';
import { deepMerge } from '@/utils';
describe('deepMerge function', () => {
test('should correctly merge basic data types', () => {
const source = { a: 1, b: 2, c: null };
const target = {
a: 2,
b: undefined,
c: 3,
};
const expected = {
a: 2,
b: 2,
c: 3,
};
expect(deepMerge(source, target)).toStrictEqual(expected);
});
test('should return the same date if only 1 is passed', () => {
const foo = new Date();
const merged = deepMerge(foo, null);
const merged2 = deepMerge(undefined, foo);
expect(merged).toStrictEqual(foo);
expect(merged2).toStrictEqual(foo);
expect(merged).toStrictEqual(merged2);
});
test('should merge two objects recursively', () => {
const source = {
a: { b: { c: 1 }, d: [1, 2] },
e: [1, 2],
foo: { bar: 3 },
array: [
{
does: 'work',
too: [1, 2, 3],
},
],
r: { a: 1 },
};
const target = {
a: { b: { d: [3] } },
e: [3],
foo: { baz: 4 },
qu: 5,
array: [
{
does: 'work',
too: [4, 5, 6],
},
{
really: 'yes',
},
],
r: { a: 2 },
};
const expected = {
a: { b: { c: 1, d: [3] }, d: [1, 2] },
e: [3],
foo: {
bar: 3,
baz: 4,
},
array: [
{
does: 'work',
too: [4, 5, 6],
},
{
really: 'yes',
},
],
qu: 5,
r: { a: 2 },
};
expect(deepMerge(source, target)).toStrictEqual(expected);
});
test('should replace arrays by default', () => {
const source = {
a: { b: { d: [1, 2] } },
e: [1, 2],
};
const target = {
a: { b: { d: [3] } },
e: [3],
};
const expected = {
a: { b: { d: [3] } },
e: [3],
};
expect(deepMerge(source, target)).toStrictEqual(expected);
});
test("should union arrays using mergeArrays = 'union'", () => {
const source = {
a: { b: { d: [1, 2] } },
e: [1, 2],
};
const target = {
a: { b: { d: [2, 3] } },
e: [1, 3],
};
const expected = {
a: { b: { d: [1, 2, 3] } },
e: [1, 2, 3],
};
expect(deepMerge(source, target, 'union')).toStrictEqual(expected);
});
test("should intersect arrays using mergeArrays = 'intersection'", () => {
const source = {
a: { b: { d: [1, 2] } },
e: [1, 2],
};
const target = {
a: { b: { d: [2, 3] } },
e: [3],
};
const expected = {
a: { b: { d: [2] } },
e: [],
};
expect(deepMerge(source, target, 'intersection')).toStrictEqual(expected);
});
test("should concatenate arrays using mergeArrays = 'concat'", () => {
const source = {
a: { b: { d: [1, 2] } },
e: [1, 2],
};
const target = {
a: { b: { d: [2, 3] } },
e: [3],
};
const expected = {
a: { b: { d: [1, 2, 2, 3] } },
e: [1, 2, 3],
};
expect(deepMerge(source, target, 'concat')).toStrictEqual(expected);
});
});