bun.sh/test/regression/issue/24045.test.ts

import assert from "assert/strict";
import { expect, test } from "bun:test";

test("assert.deepStrictEqual() should compare Number wrapper object values - issue #24045", () => {
  // Different values should throw
  expect(() => {
    assert.deepStrictEqual(new Number(1), new Number(2));
  }).toThrow("Expected values to be strictly deep-equal");

  // Same values should not throw
  expect(() => {
    assert.deepStrictEqual(new Number(1), new Number(1));
  }).not.toThrow();

  // Edge cases
  // 0 and -0 should be different in strict mode
  expect(() => {
    assert.deepStrictEqual(new Number(0), new Number(-0));
  }).toThrow("Expected values to be strictly deep-equal");

  // NaN should equal NaN
  expect(() => {
    assert.deepStrictEqual(new Number(NaN), new Number(NaN));
  }).not.toThrow();

  expect(() => {
    assert.deepStrictEqual(new Number(Infinity), new Number(-Infinity));
  }).toThrow("Expected values to be strictly deep-equal");
});

test("assert.deepStrictEqual() should compare Boolean wrapper object values - issue #24045", () => {
  // Different values should throw
  expect(() => {
    assert.deepStrictEqual(new Boolean(true), new Boolean(false));
  }).toThrow("Expected values to be strictly deep-equal");

  // Same values should not throw
  expect(() => {
    assert.deepStrictEqual(new Boolean(true), new Boolean(true));
  }).not.toThrow();

  expect(() => {
    assert.deepStrictEqual(new Boolean(false), new Boolean(false));
  }).not.toThrow();
});

test("assert.deepStrictEqual() should not compare Number wrapper with primitive", () => {
  // Wrapper objects should not equal primitives in strict mode
  expect(() => {
    assert.deepStrictEqual(new Number(1), 1);
  }).toThrow("Expected values to be strictly deep-equal");

  expect(() => {
    assert.deepStrictEqual(1, new Number(1));
  }).toThrow("Expected values to be strictly deep-equal");
});

test("assert.deepStrictEqual() should not compare Boolean wrapper with primitive", () => {
  // Wrapper objects should not equal primitives in strict mode
  expect(() => {
    assert.deepStrictEqual(new Boolean(true), true);
  }).toThrow("Expected values to be strictly deep-equal");

  expect(() => {
    assert.deepStrictEqual(false, new Boolean(false));
  }).toThrow("Expected values to be strictly deep-equal");
});

test("assert.deepStrictEqual() should not compare Number and Boolean wrappers", () => {
  // Different wrapper types should not be equal even with truthy/falsy values
  expect(() => {
    assert.deepStrictEqual(new Number(1), new Boolean(true));
  }).toThrow("Expected values to be strictly deep-equal");

  expect(() => {
    assert.deepStrictEqual(new Number(0), new Boolean(false));
  }).toThrow("Expected values to be strictly deep-equal");
});

test("assert.deepStrictEqual() should check own properties on wrapper objects", () => {
  // Same internal value but different own properties should not be equal
  const num1 = new Number(42);
  const num2 = new Number(42);
  (num1 as any).customProp = "hello";

  expect(() => {
    assert.deepStrictEqual(num1, num2);
  }).toThrow("Expected values to be strictly deep-equal");

  // Same internal value and same own properties should be equal
  (num2 as any).customProp = "hello";
  expect(() => {
    assert.deepStrictEqual(num1, num2);
  }).not.toThrow();

  // Different own property values should not be equal
  const bool1 = new Boolean(true);
  const bool2 = new Boolean(true);
  (bool1 as any).foo = 1;
  (bool2 as any).foo = 2;

  expect(() => {
    assert.deepStrictEqual(bool1, bool2);
  }).toThrow("Expected values to be strictly deep-equal");
});