reducer-tester/dest/index.test.js

reducer tester

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var _1 = __importDefault(require("."));
var noop = function () { };
var reducer = function (state, action) {
    if (state === void 0) { state = {}; }
    if (action.payload) {
        return { result: action.payload };
    }
    return state;
};
var itSpy;
var state = {};
beforeEach(function () {
    // @ts-ignore
    itSpy = jest.spyOn(global, 'it').mockImplementation(noop);
});
afterEach(function () {
    itSpy.mockRestore();
});
test('throws an invariant if tests is not Array', function () {
    expect(function () {
        // @ts-ignore
        _1.default({ reducer: reducer, state: state, tests: null });
    }).toThrowErrorMatchingSnapshot();
});
test('throws an invariant if type property is not exist', function () {
    expect(function () {
        // @ts-ignore
        _1.default({ reducer: reducer, state: state, tests: [{ typo: 'typo' }] });
    }).toThrowErrorMatchingSnapshot();
});
test('throws an invariant if state property is not exist', function () {
    expect(function () {
        // @ts-ignore
        _1.default({ reducer: reducer, tests: [] });
    }).toThrowErrorMatchingSnapshot();
});
test('can provide an object for tests', function () {
    var title = 'reducer-test';
    _1.default({
        reducer: reducer,
        state: state,
        tests: [{ type: title, payload: 'payload' }],
    });
    expect(itSpy).toHaveBeenCalledTimes(2);
    expect(itSpy).toHaveBeenCalledWith(title, expect.any(Function));
    expect(itSpy).toHaveBeenCalledWith('handle initial state', expect.any(Function));
});
test('can provide empty array for tests', function () {
    _1.default({ tests: [], reducer: reducer, state: state });
    expect(itSpy).toHaveBeenCalledTimes(1);
});
test('can provide initialTest', function () {
    _1.default({
        reducer: reducer,
        state: state,
        tests: [{ type: 'test' }],
        initialTest: true,
    });
    expect(itSpy).toHaveBeenCalledTimes(2);
    expect(itSpy).toHaveBeenCalledWith('handle initial state', expect.any(Function));
});
test('not handle initial state with initialTest =  false', function () {
    _1.default({
        reducer: reducer,
        state: state,
        tests: [{ type: 'test' }],
        initialTest: false,
    });
    expect(itSpy).toHaveBeenCalledTimes(1);
});
test('can provide titlePrefix', function () {
    var title = 'reducer';
    _1.default({
        reducer: reducer,
        state: state,
        titlePrefix: 'handle ',
        tests: [{ type: title, payload: 'payload' }],
    });
    expect(itSpy).toHaveBeenCalledTimes(2);
    expect(itSpy).toHaveBeenCalledWith('handle reducer', expect.any(Function));
});
// haha... jest work :)
_1.default({
    reducer: reducer,
    state: state,
    tests: [{ type: 'work', payload: 'payload' }],
});
_1.default({
    reducer: reducer,
    state: state,
    titlePrefix: 'handle ',
    tests: [{ type: 'work', payload: 'payload' }],
});
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