trezor-wallet/src/reducers/utils/__tests__/index.test.js

import * as utils from '../index';

describe('reducers utils', () => {
    it('observer changes should BE THE SAME - return false', () => {
        expect(utils.observeChanges({}, {})).toBe(false);

        expect(utils.observeChanges([], [])).toBe(false);

        expect(utils.observeChanges([1, 1, 1], [1, 1, 1])).toBe(false);

        expect(utils.observeChanges('a', 'a')).toBe(false);

        expect(utils.observeChanges({ one: 1 }, { one: 1 })).toBe(false);

        expect(utils.observeChanges({ one: { two: 1 } }, { one: { two: 1 } })).toBe(false);

        expect(utils.observeChanges({ one: { two: [1, 2, 3] } }, { one: { two: [1, 2, 3] } })).toBe(
            false
        );

        expect(
            utils.observeChanges(
                { one: { two: [1, { three: 1 }, 3] } },
                { one: { two: [1, { three: 1 }, 3] } }
            )
        ).toBe(false);

        expect(
            utils.observeChanges(
                { one: { two: [1, { three: 1 }, { four: 3, five: { six: 3 } }] } },
                { one: { two: [1, { three: 1 }, { four: 3, five: { six: 3 } }] } }
            )
        ).toBe(false);
    });

    it('observer should NOT be the same - return true', () => {
        expect(utils.observeChanges(null, {})).toBe(true);

        expect(utils.observeChanges({ one: 1 }, {})).toBe(true);

        expect(utils.observeChanges({ one: 1, three: 3 }, { one: 1, two: 2 })).toBe(true);

        expect(utils.observeChanges([{}, {}], [])).toBe(true);

        expect(utils.observeChanges([1, 1, 1], [1, 1])).toBe(true);

        expect(utils.observeChanges('a', 'b')).toBe(true);

        expect(utils.observeChanges(['a'], ['b'])).toBe(true);

        expect(utils.observeChanges(1, '1')).toBe(true);

        expect(utils.observeChanges({ one: 1 }, { one: 2 })).toBe(true);

        expect(utils.observeChanges({ one: { two: 1 } }, { one: { two: 2 } })).toBe(true);

        expect(utils.observeChanges({ one: { two: [1, 2, 3] } }, { one: { two: [1, 1, 3] } })).toBe(
            true
        );

        expect(
            utils.observeChanges(
                { one: { two: [1, { three: 1 }, 3] } },
                { one: { two: [1, { three: 2 }, 3] } }
            )
        ).toBe(true);

        expect(
            utils.observeChanges(
                { one: { two: [1, { three: 1 }, { four: 3, five: { six: 3 } }] } },
                { one: { two: [1, { three: 1 }, { four: 3, five: { six: 1 } }] } }
            )
        ).toBe(true);

        expect(
            utils.observeChanges(
                { one: { two: [1, { three: 1 }, { four: 3, five: { sixxx: 3 } }] } },
                { one: { two: [1, { three: 1 }, { four: 3, five: { six: 1 } }] } }
            )
        ).toBe(true);
    });

    it('observeChanges test filter', () => {
        expect(
            utils.observeChanges(
                { one: { two: 2, three: 3 } },
                { one: { two: 2, three: 4 } },
                { one: ['two'] }
            )
        ).toBe(false);

        expect(
            utils.observeChanges(
                { one: { two: 2, three: 3 } },
                { one: { two: 1, three: 3 } },
                { one: ['two'] }
            )
        ).toBe(true);
    });
});