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@@ -3,58 +3,51 @@ import { describe, expect, it } from 'vitest';
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import { diff } from './diff';
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describe('diff function', () => {
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- it('should correctly find differences in flat objects', () => {
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- const oldObj = { a: 1, b: 2, c: 3 };
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- const newObj = { a: 1, b: 3, c: 3 };
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- expect(diff(oldObj, newObj)).toEqual({ b: 3 });
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- });
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-
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- it('should correctly handle nested objects', () => {
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- const oldObj = { a: { b: 1, c: 2 }, d: 3 };
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- const newObj = { a: { b: 1, c: 3 }, d: 3 };
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- expect(diff(oldObj, newObj)).toEqual({ a: { b: 1, c: 3 } });
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- });
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-
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- it('should correctly handle arrays`', () => {
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- const oldObj = { a: [1, 2, 3] };
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- const newObj = { a: [1, 2, 4] };
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- expect(diff(oldObj, newObj)).toEqual({ a: [1, 2, 4] });
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- });
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-
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- it('should correctly handle nested arrays', () => {
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- const oldObj = {
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- a: [
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- [1, 2],
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- [3, 4],
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- ],
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- };
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- const newObj = {
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- a: [
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- [1, 2],
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- [3, 5],
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- ],
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- };
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- expect(diff(oldObj, newObj)).toEqual({
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- a: [
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- [1, 2],
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- [3, 5],
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- ],
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- });
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- });
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-
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- it('should return null if objects are identical', () => {
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- const oldObj = { a: 1, b: 2, c: 3 };
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- const newObj = { a: 1, b: 2, c: 3 };
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- expect(diff(oldObj, newObj)).toBeNull();
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- });
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-
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- it('should return differences between two objects excluding ignored fields', () => {
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- const oldObj = { a: 1, b: 2, c: 3, d: 6 };
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- const newObj = { a: 2, b: 2, c: 4, d: 5 };
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- const ignoreFields: (keyof typeof newObj)[] = ['a', 'd'];
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-
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- const result = diff(oldObj, newObj, ignoreFields);
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-
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- expect(result).toEqual({ c: 4 });
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+ it('should return an empty object when comparing identical objects', () => {
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+ const obj1 = { a: 1, b: { c: 2 } };
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+ const obj2 = { a: 1, b: { c: 2 } };
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+ expect(diff(obj1, obj2)).toEqual(undefined);
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+ });
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+
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+ it('should detect simple changes in primitive values', () => {
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+ const obj1 = { a: 1, b: 2 };
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+ const obj2 = { a: 1, b: 3 };
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+ expect(diff(obj1, obj2)).toEqual({ b: 3 });
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+ });
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+
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+ it('should detect nested object changes', () => {
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+ const obj1 = { a: 1, b: { c: 2, d: 4 } };
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+ const obj2 = { a: 1, b: { c: 3, d: 4 } };
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+ expect(diff(obj1, obj2)).toEqual({ b: { c: 3 } });
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+ });
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+
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+ it('should handle array changes', () => {
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+ const obj1 = { a: [1, 2, 3], b: 2 };
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+ const obj2 = { a: [1, 2, 4], b: 2 };
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+ expect(diff(obj1, obj2)).toEqual({ a: [1, 2, 4] });
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+ });
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+
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+ it('should handle added keys', () => {
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+ const obj1 = { a: 1 };
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+ const obj2 = { a: 1, b: 2 };
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+ expect(diff(obj1, obj2)).toEqual({ b: 2 });
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+ });
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+
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+ it('should handle removed keys', () => {
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+ const obj1 = { a: 1, b: 2 };
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+ const obj2 = { a: 1 };
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+ expect(diff(obj1, obj2)).toEqual(undefined);
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+ });
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+
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+ it('should handle boolean value changes', () => {
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+ const obj1 = { a: true, b: false };
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+ const obj2 = { a: true, b: true };
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+ expect(diff(obj1, obj2)).toEqual({ b: true });
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+ });
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+
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+ it('should handle null and undefined values', () => {
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+ const obj1 = { a: null, b: undefined };
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+ const obj2: any = { a: 1, b: undefined };
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+ expect(diff(obj1, obj2)).toEqual({ a: 1 });
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});
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});
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