accounts-frontend/packages/app/components/accounts/reducer.test.ts

import expect from 'app/test/unexpected';

import { updateToken } from './actions';
import {
  add,
  remove,
  activate,
  reset,
  ADD,
  REMOVE,
  ACTIVATE,
  UPDATE_TOKEN,
  RESET,
} from './actions/pure-actions';
import accounts, { Account } from './reducer';

const account: Account = {
  id: 1,
  username: 'username',
  email: 'email@test.com',
  token: 'foo',
} as Account;

describe('Accounts reducer', () => {
  let initial;

  beforeEach(() => {
    initial = accounts(undefined, {} as any);
  });

  it('should be empty', () =>
    expect(accounts(undefined, {} as any), 'to equal', {
      active: null,
      available: [],
    }));

  it('should return last state if unsupported action', () =>
    expect(accounts({ state: 'foo' } as any, {} as any), 'to equal', {
      state: 'foo',
    }));

  describe(ACTIVATE, () => {
    it('sets active account', () => {
      expect(accounts(initial, activate(account)), 'to satisfy', {
        active: account.id,
      });
    });
  });

  describe(ADD, () => {
    it('adds an account', () =>
      expect(accounts(initial, add(account)), 'to satisfy', {
        available: [account],
      }));

    it('should replace if account was added for the second time', () => {
      const outdatedAccount = {
        ...account,
        someShit: true,
      };

      const updatedAccount = {
        ...account,
        token: 'newToken',
      };

      expect(
        accounts(
          { ...initial, available: [outdatedAccount] },
          add(updatedAccount),
        ),
        'to satisfy',
        {
          available: [updatedAccount],
        },
      );
    });

    it('should sort accounts by username', () => {
      const newAccount = {
        ...account,
        id: 2,
        username: 'abc',
      };

      expect(
        accounts({ ...initial, available: [account] }, add(newAccount)),
        'to satisfy',
        {
          available: [newAccount, account],
        },
      );
    });

    it('throws, when account is invalid', () => {
      expect(
        () =>
          accounts(
            initial,
            // @ts-ignore
            add(),
          ),
        'to throw',
        'Invalid or empty payload passed for accounts.add',
      );
    });
  });

  describe(REMOVE, () => {
    it('should remove an account', () =>
      expect(
        accounts({ ...initial, available: [account] }, remove(account)),
        'to equal',
        initial,
      ));

    it('throws, when account is invalid', () => {
      expect(
        () =>
          accounts(
            initial,
            // @ts-ignore
            remove(),
          ),
        'to throw',
        'Invalid or empty payload passed for accounts.remove',
      );
    });
  });

  describe(RESET, () => {
    it('should reset accounts state', () =>
      expect(
        accounts({ ...initial, available: [account] }, reset()),
        'to equal',
        initial,
      ));
  });

  describe(UPDATE_TOKEN, () => {
    it('should update token', () => {
      const newToken = 'newToken';

      expect(
        accounts(
          { active: account.id, available: [account] },
          updateToken(newToken),
        ),
        'to satisfy',
        {
          active: account.id,
          available: [
            {
              ...account,
              token: newToken,
            },
          ],
        },
      );
    });
  });
});