import { describe, it, expect } from "vitest";
import { deepEquals } from "../../src/utils/deep-equals";

describe("deepEquals", () => {
    it("should return true for identical primitive values", () => {
        expect(deepEquals(1, 1)).toBe(true);
        expect(deepEquals("test", "test")).toBe(true);
        expect(deepEquals(true, true)).toBe(true);
    });

    it("should return false for different primitive values", () => {
        expect(deepEquals(1, 2)).toBe(false);
        expect(deepEquals("test", "other")).toBe(false);
        expect(deepEquals(true, false)).toBe(false);
    });

    it("should return true for identical objects", () => {
        const obj1 = { a: 1, b: { c: 2 } };
        const obj2 = { a: 1, b: { c: 2 } };
        expect(deepEquals(obj1, obj2)).toBe(true);
    });

    it("should return false for different objects", () => {
        const obj1 = { a: 1, b: { c: 2 } };
        const obj2 = { a: 1, b: { c: 3 } };
        expect(deepEquals(obj1, obj2)).toBe(false);
    });

    it("should return true for identical arrays", () => {
        const arr1 = [1, 2, [3, 4]];
        const arr2 = [1, 2, [3, 4]];
        expect(deepEquals(arr1, arr2)).toBe(true);
    });

    it("should return false for different arrays", () => {
        const arr1 = [1, 2, [3, 4]];
        const arr2 = [1, 2, [3, 5]];
        expect(deepEquals(arr1, arr2)).toBe(false);
    });

    it("should return false for objects and arrays compared", () => {
        expect(deepEquals({ a: 1 }, [1])).toBe(false);
    });

    it("should return true for null compared to null", () => {
        expect(deepEquals(null, null)).toBe(true);
    });

    it("should return false for null compared to an object", () => {
        expect(deepEquals(null, {})).toBe(false);
    });

    it("should return false for undefined compared to null", () => {
        expect(deepEquals(undefined, null)).toBe(false);
    });

    it("should return true for deeply nested identical structures", () => {
        const obj1 = { a: [1, { b: 2, c: [3, 4] }] };
        const obj2 = { a: [1, { b: 2, c: [3, 4] }] };
        expect(deepEquals(obj1, obj2)).toBe(true);
    });

    it("should return false for deeply nested different structures", () => {
        const obj1 = { a: [1, { b: 2, c: [3, 4] }] };
        const obj2 = { a: [1, { b: 2, c: [3, 5] }] };
        expect(deepEquals(obj1, obj2)).toBe(false);
    });
});