redux-devtools/packages/redux-devtools-inspector-monitor-test-tab/test/assertions.spec.ts

import { assertion } from '../src/vanilla/mocha';
import { compare } from '../src/TestGenerator';

const computedStates = [
  { state: { o1: 0 } },
  { state: { o1: 0, o2: 1 } },
  { state: { o1: 0, o2: 'a' } },
  { state: { o1: [{ t: 1 }], o3: { t: 2 } } },
  { state: { o1: [{ t: 3 }], o3: { t: 2 } } },
  { state: [0, 1, 2, 3, 4] },
  { state: [0, 3] },
  { state: [0, 2, 3, 4] },
];

const runTest = (s1: { state: unknown } | undefined, s2: { state: unknown }) =>
  compare(s1, s2, ({ path, curState }) =>
    expect(
      `expect(store${path}).toEqual(${curState as number | string});`,
    ).toBe(assertion({ path, curState })),
  );

describe('Assertions', () => {
  it('should return initial state', () => {
    runTest(undefined, computedStates[0]);
  });

  it('should add element', () => {
    runTest(computedStates[0], computedStates[1]);
  });

  it('should remove element', () => {
    runTest(computedStates[1], computedStates[0]);
  });

  it('should change element', () => {
    runTest(computedStates[1], computedStates[2]);
  });

  it('should add, change and remove elements', () => {
    runTest(computedStates[2], computedStates[3]);
  });

  it('should change in array', () => {
    runTest(computedStates[3], computedStates[4]);
  });

  it('should remove elements in array', () => {
    runTest(computedStates[5], computedStates[6]);
  });

  it('should add elements in array', () => {
    runTest(computedStates[6], computedStates[5]);
  });

  it('should add and change elements in array', () => {
    runTest(computedStates[5], computedStates[7]);
  });
});