bigbuffet-rw/app/soapbox/reducers/__tests__/notifications-test.js

import { Map as ImmutableMap, OrderedMap as ImmutableOrderedMap, fromJS } from 'immutable';
import { take } from 'lodash';

import intlMessages from 'soapbox/__fixtures__/intlMessages.json';
import notification from 'soapbox/__fixtures__/notification.json';
import notifications from 'soapbox/__fixtures__/notifications.json';
import relationship from 'soapbox/__fixtures__/relationship.json';
import { ACCOUNT_BLOCK_SUCCESS, ACCOUNT_MUTE_SUCCESS } from 'soapbox/actions/accounts';
import {
  MARKER_FETCH_SUCCESS,
  MARKER_SAVE_REQUEST,
  MARKER_SAVE_SUCCESS,
} from 'soapbox/actions/markers';
import {
  NOTIFICATIONS_EXPAND_SUCCESS,
  NOTIFICATIONS_EXPAND_REQUEST,
  NOTIFICATIONS_EXPAND_FAIL,
  NOTIFICATIONS_FILTER_SET,
  NOTIFICATIONS_SCROLL_TOP,
  NOTIFICATIONS_UPDATE,
  NOTIFICATIONS_UPDATE_QUEUE,
  NOTIFICATIONS_DEQUEUE,
  NOTIFICATIONS_CLEAR,
  NOTIFICATIONS_MARK_READ_REQUEST,
} from 'soapbox/actions/notifications';
import { TIMELINE_DELETE } from 'soapbox/actions/timelines';

import reducer from '../notifications';

describe('notifications reducer', () => {
  it('should return the initial state', () => {
    expect(reducer(undefined, {})).toEqual(ImmutableMap({
      items: ImmutableOrderedMap(),
      hasMore: true,
      top: false,
      unread: 0,
      isLoading: false,
      queuedNotifications: ImmutableOrderedMap(),
      totalQueuedNotificationsCount: 0,
      lastRead: -1,
    }));
  });

  describe('NOTIFICATIONS_EXPAND_SUCCESS', () => {
    it('imports the notifications', () => {
      const state = undefined;

      const action = {
        type: NOTIFICATIONS_EXPAND_SUCCESS,
        notifications: take(notifications, 3),
        next: null,
        skipLoading: true,
      };

      expect(reducer(state, action)).toEqual(ImmutableMap({
        items: ImmutableOrderedMap([
          ['10744', ImmutableMap({
            id: '10744',
            type: 'pleroma:emoji_reaction',
            account: '9vMAje101ngtjlMj7w',
            target: null,
            created_at: '2020-06-10T02:54:39.000Z',
            status: '9vvNxoo5EFbbnfdXQu',
            emoji: '😢',
            chat_message: undefined,
          })],
          ['10743', ImmutableMap({
            id: '10743',
            type: 'favourite',
            account: '9v5c6xSEgAi3Zu1Lv6',
            target: null,
            created_at: '2020-06-10T02:51:05.000Z',
            status: '9vvNxoo5EFbbnfdXQu',
            emoji: undefined,
            chat_message: undefined,
          })],
          ['10741', ImmutableMap({
            id: '10741',
            type: 'favourite',
            account: '9v5cKMOPGqPcgfcWp6',
            target: null,
            created_at: '2020-06-10T02:05:06.000Z',
            status: '9vvNxoo5EFbbnfdXQu',
            emoji: undefined,
            chat_message: undefined,
          })],
        ]),
        hasMore: false,
        top: false,
        unread: 0,
        isLoading: false,
        queuedNotifications: ImmutableOrderedMap(),
        totalQueuedNotificationsCount: 0,
        lastRead: -1,
      }));
    });

    it('drops invalid notifications', () => {
      const action = {
        type: NOTIFICATIONS_EXPAND_SUCCESS,
        notifications: [
          { id: '1', type: 'mention', status: null, account: { id: '10' } },
          { id: '2', type: 'reblog', status: null, account: { id: '9' } },
          { id: '3', type: 'favourite', status: null, account: { id: '8' } },
          { id: '4', type: 'mention', status: { id: 'a' }, account: { id: '7' } },
          { id: '5', type: 'reblog', status: { id: 'b' }, account: null },
        ],
        next: null,
        skipLoading: true,
      };

      const expected = ImmutableOrderedMap([
        ['4', fromJS({
          id: '4',
          type: 'mention',
          account: '7',
          target: null,
          created_at: undefined,
          status: 'a',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]);

      expect(reducer(undefined, action).get('items')).toEqual(expected);
    });
  });

  it('should handle NOTIFICATIONS_EXPAND_REQUEST', () => {
    const state = ImmutableMap({
      isLoading: false,
    });
    const action = {
      type: NOTIFICATIONS_EXPAND_REQUEST,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      isLoading: true,
    }));
  });

  it('should handle NOTIFICATIONS_EXPAND_FAIL', () => {
    const state = ImmutableMap({
      isLoading: true,
    });
    const action = {
      type: NOTIFICATIONS_EXPAND_FAIL,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      isLoading: false,
    }));
  });

  it('should handle NOTIFICATIONS_FILTER_SET', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap([
        ['10744', ImmutableMap({
          id: '10744',
          type: 'pleroma:emoji_reaction',
          account: '9vMAje101ngtjlMj7w',
          target: null,
          created_at: '2020-06-10T02:54:39.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: '😢',
          chat_message: undefined,
        })],
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10741', ImmutableMap({
          id: '10741',
          type: 'favourite',
          account: '9v5cKMOPGqPcgfcWp6',
          target: null,
          created_at: '2020-06-10T02:05:06.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]),
      hasMore: false,
      top: false,
      unread: 1,
      isLoading: false,
      queuedNotifications: ImmutableOrderedMap(),
      totalQueuedNotificationsCount: 0,
      lastRead: -1,
    });
    const action = {
      type: NOTIFICATIONS_FILTER_SET,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap(),
      hasMore: true,
      top: false,
      unread: 1,
      isLoading: false,
      queuedNotifications: ImmutableOrderedMap(),
      totalQueuedNotificationsCount: 0,
      lastRead: -1,
    }));
  });

  it('should handle NOTIFICATIONS_SCROLL_TOP by changing unread to 0 when top = true', () => {
    const state = ImmutableMap({
      unread: 1,
    });
    const action = {
      type: NOTIFICATIONS_SCROLL_TOP,
      top: true,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      unread: 0,
      top: true,
    }));
  });

  it('should handle NOTIFICATIONS_SCROLL_TOP by not changing unread val when top = false', () => {
    const state = ImmutableMap({
      unread: 3,
    });
    const action = {
      type: NOTIFICATIONS_SCROLL_TOP,
      top: false,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      unread: 3,
      top: false,
    }));
  });

  it('should handle NOTIFICATIONS_UPDATE, when top = false, increment unread', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap(),
      top: false,
      unread: 1,
    });
    const action = {
      type: NOTIFICATIONS_UPDATE,
      notification: notification,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap([
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]),
      top: false,
      unread: 2,
    }));
  });

  it('should handle NOTIFICATIONS_UPDATE_QUEUE', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap(),
      queuedNotifications: ImmutableOrderedMap(),
      totalQueuedNotificationsCount: 0,
    });
    const action = {
      type: NOTIFICATIONS_UPDATE_QUEUE,
      notification: notification,
      intlMessages: intlMessages,
      intlLocale: 'en',
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap(),
      queuedNotifications: ImmutableOrderedMap([[notification.id, {
        notification: notification,
        intlMessages: intlMessages,
        intlLocale: 'en',
      }]]),
      totalQueuedNotificationsCount: 1,
    }));
  });

  it('should handle NOTIFICATIONS_DEQUEUE', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap(),
      queuedNotifications: take(notifications, 1),
      totalQueuedNotificationsCount: 1,
    });
    const action = {
      type: NOTIFICATIONS_DEQUEUE,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap(),
      queuedNotifications: ImmutableOrderedMap(),
      totalQueuedNotificationsCount: 0,
    }));
  });

  it('should handle NOTIFICATIONS_EXPAND_SUCCESS with non-empty items and next set true', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap([
        ['10734', ImmutableMap({
          id: '10734',
          type: 'pleroma:emoji_reaction',
          account: '9vMAje101ngtjlMj7w',
          target: null,
          created_at: '2020-06-10T02:54:39.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: '😢',
          chat_message: undefined,
        })],
      ]),
      unread: 1,
      hasMore: true,
      isLoading: false,
    });
    const action = {
      type: NOTIFICATIONS_EXPAND_SUCCESS,
      notifications: take(notifications, 3),
      next: true,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap([
        ['10744', ImmutableMap({
          id: '10744',
          type: 'pleroma:emoji_reaction',
          account: '9vMAje101ngtjlMj7w',
          target: null,
          created_at: '2020-06-10T02:54:39.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: '😢',
          chat_message: undefined,
        })],
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10741', ImmutableMap({
          id: '10741',
          type: 'favourite',
          account: '9v5cKMOPGqPcgfcWp6',
          target: null,
          created_at: '2020-06-10T02:05:06.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10734', ImmutableMap({
          id: '10734',
          type: 'pleroma:emoji_reaction',
          account: '9vMAje101ngtjlMj7w',
          target: null,
          created_at: '2020-06-10T02:54:39.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: '😢',
          chat_message: undefined,
        })],
      ]),
      unread: 1,
      hasMore: true,
      isLoading: false,
    }));
  });

  it('should handle NOTIFICATIONS_EXPAND_SUCCESS with empty items and next set true', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap(),
      unread: 1,
      hasMore: true,
      isLoading: false,
    });
    const action = {
      type: NOTIFICATIONS_EXPAND_SUCCESS,
      notifications: take(notifications, 3),
      next: true,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap([
        ['10744', ImmutableMap({
          id: '10744',
          type: 'pleroma:emoji_reaction',
          account: '9vMAje101ngtjlMj7w',
          target: null,
          created_at: '2020-06-10T02:54:39.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: '😢',
          chat_message: undefined,
        })],
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10741', ImmutableMap({
          id: '10741',
          type: 'favourite',
          account: '9v5cKMOPGqPcgfcWp6',
          target: null,
          created_at: '2020-06-10T02:05:06.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]),
      unread: 1,
      hasMore: true,
      isLoading: false,
    }));
  });

  it('should handle ACCOUNT_BLOCK_SUCCESS', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap([
        ['10744', ImmutableMap({
          id: '10744',
          type: 'pleroma:emoji_reaction',
          account: '9vMAje101ngtjlMj7w',
          target: null,
          created_at: '2020-06-10T02:54:39.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: '😢',
          chat_message: undefined,
        })],
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10741', ImmutableMap({
          id: '10741',
          type: 'favourite',
          account: '9v5cKMOPGqPcgfcWp6',
          target: null,
          created_at: '2020-06-10T02:05:06.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]),
    });
    const action = {
      type: ACCOUNT_BLOCK_SUCCESS,
      relationship: relationship,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap([
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10741', ImmutableMap({
          id: '10741',
          type: 'favourite',
          account: '9v5cKMOPGqPcgfcWp6',
          target: null,
          created_at: '2020-06-10T02:05:06.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]),
    }));
  });

  it('should handle ACCOUNT_MUTE_SUCCESS', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap([
        ['10744', ImmutableMap({
          id: '10744',
          type: 'pleroma:emoji_reaction',
          account: '9vMAje101ngtjlMj7w',
          target: null,
          created_at: '2020-06-10T02:54:39.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: '😢',
          chat_message: undefined,
        })],
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10741', ImmutableMap({
          id: '10741',
          type: 'favourite',
          account: '9v5cKMOPGqPcgfcWp6',
          target: null,
          created_at: '2020-06-10T02:05:06.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]),
    });
    const action = {
      type: ACCOUNT_MUTE_SUCCESS,
      relationship: relationship,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap([
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10741', ImmutableMap({
          id: '10741',
          type: 'favourite',
          account: '9v5cKMOPGqPcgfcWp6',
          target: null,
          created_at: '2020-06-10T02:05:06.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]),
    }));
  });

  it('should handle NOTIFICATIONS_CLEAR', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap(),
      hasMore: true,
    });
    const action = {
      type: NOTIFICATIONS_CLEAR,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap(),
      hasMore: false,
    }));
  });

  it('should handle NOTIFICATIONS_MARK_READ_REQUEST', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap(),
    });
    const action = {
      type: NOTIFICATIONS_MARK_READ_REQUEST,
      lastRead: 35098814,
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap(),
      lastRead: 35098814,
    }));
  });

  it('should handle TIMELINE_DELETE', () => {
    const state = ImmutableMap({
      items: ImmutableOrderedMap([
        ['10744', ImmutableMap({
          id: '10744',
          type: 'pleroma:emoji_reaction',
          account: '9vMAje101ngtjlMj7w',
          target: null,
          created_at: '2020-06-10T02:54:39.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: '😢',
          chat_message: undefined,
        })],
        ['10743', ImmutableMap({
          id: '10743',
          type: 'favourite',
          account: '9v5c6xSEgAi3Zu1Lv6',
          target: null,
          created_at: '2020-06-10T02:51:05.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
        ['10741', ImmutableMap({
          id: '10741',
          type: 'favourite',
          account: '9v5cKMOPGqPcgfcWp6',
          target: null,
          created_at: '2020-06-10T02:05:06.000Z',
          status: '9vvNxoo5EFbbnfdXQu',
          emoji: undefined,
          chat_message: undefined,
        })],
      ]),
    });
    const action = {
      type: TIMELINE_DELETE,
      id: '9vvNxoo5EFbbnfdXQu',
    };
    expect(reducer(state, action)).toEqual(ImmutableMap({
      items: ImmutableOrderedMap(),
    }));
  });

  // Disable for now
  // https://gitlab.com/soapbox-pub/soapbox-fe/-/issues/432
  //
  // it('should handle TIMELINE_DISCONNECT', () => {
  //   const state = ImmutableMap({
  //     items: ImmutableOrderedSet([
  //       ImmutableMap({
  //         id: '10744',
  //         type: 'pleroma:emoji_reaction',
  //         account: '9vMAje101ngtjlMj7w',
  //         created_at: '2020-06-10T02:54:39.000Z',
  //         status: '9vvNxoo5EFbbnfdXQu',
  //         emoji: '😢',
  //         chat_message: undefined,
  //       }),
  //       ImmutableMap({
  //         id: '10743',
  //         type: 'favourite',
  //         account: '9v5c6xSEgAi3Zu1Lv6',
  //         created_at: '2020-06-10T02:51:05.000Z',
  //         status: '9vvNxoo5EFbbnfdXQu',
  //         emoji: undefined,
  //         chat_message: undefined,
  //       }),
  //       ImmutableMap({
  //         id: '10741',
  //         type: 'favourite',
  //         account: '9v5cKMOPGqPcgfcWp6',
  //         created_at: '2020-06-10T02:05:06.000Z',
  //         status: '9vvNxoo5EFbbnfdXQu',
  //         emoji: undefined,
  //         chat_message: undefined,
  //       }),
  //     ]),
  //   });
  //   const action = {
  //     type: TIMELINE_DISCONNECT,
  //     timeline: 'home',
  //   };
  //   expect(reducer(state, action)).toEqual(ImmutableMap({
  //     items: ImmutableOrderedSet([
  //       null,
  //       ImmutableMap({
  //         id: '10744',
  //         type: 'pleroma:emoji_reaction',
  //         account: '9vMAje101ngtjlMj7w',
  //         created_at: '2020-06-10T02:54:39.000Z',
  //         status: '9vvNxoo5EFbbnfdXQu',
  //         emoji: '😢',
  //         chat_message: undefined,
  //       }),
  //       ImmutableMap({
  //         id: '10743',
  //         type: 'favourite',
  //         account: '9v5c6xSEgAi3Zu1Lv6',
  //         created_at: '2020-06-10T02:51:05.000Z',
  //         status: '9vvNxoo5EFbbnfdXQu',
  //         emoji: undefined,
  //         chat_message: undefined,
  //       }),
  //       ImmutableMap({
  //         id: '10741',
  //         type: 'favourite',
  //         account: '9v5cKMOPGqPcgfcWp6',
  //         created_at: '2020-06-10T02:05:06.000Z',
  //         status: '9vvNxoo5EFbbnfdXQu',
  //         emoji: undefined,
  //         chat_message: undefined,
  //       }),
  //     ]),
  //   }));
  // });

  describe('MARKER_FETCH_SUCCESS', () => {
    it('sets lastRead', () => {
      const action = {
        type: MARKER_FETCH_SUCCESS,
        timeline: ['notifications'],
        marker: {
          notifications: {
            last_read_id: '1234',
          },
        },
      };

      expect(reducer(undefined, action).get('lastRead')).toEqual('1234');
    });

    it('updates the unread count', () => {
      const action = {
        type: MARKER_FETCH_SUCCESS,
        timeline: ['notifications'],
        marker: {
          notifications: {
            last_read_id: '5678',
          },
        },
      };

      const state = ImmutableMap({
        items: ImmutableOrderedMap({
          '9012': ImmutableMap({ id: '9012' }),
          '5678': ImmutableMap({ id: '5678' }),
          '1234': ImmutableMap({ id: '1234' }),
        }),
        unread: 3,
      });

      expect(reducer(state, action).get('unread')).toEqual(1);
    });
  });

  describe('MARKER_SAVE_REQUEST', () => {
    it('sets lastRead', () => {
      const action = {
        type: MARKER_SAVE_REQUEST,
        timeline: ['notifications'],
        marker: {
          notifications: {
            last_read_id: '1234',
          },
        },
      };

      expect(reducer(undefined, action).get('lastRead')).toEqual('1234');
    });

    it('updates the unread count', () => {
      const action = {
        type: MARKER_SAVE_REQUEST,
        timeline: ['notifications'],
        marker: {
          notifications: {
            last_read_id: '5678',
          },
        },
      };

      const state = ImmutableMap({
        items: ImmutableOrderedMap({
          '9012': ImmutableMap({ id: '9012' }),
          '5678': ImmutableMap({ id: '5678' }),
          '1234': ImmutableMap({ id: '1234' }),
        }),
        unread: 3,
      });

      expect(reducer(state, action).get('unread')).toEqual(1);
    });
  });

  describe('MARKER_SAVE_SUCCESS', () => {
    it('sets lastRead', () => {
      const action = {
        type: MARKER_SAVE_SUCCESS,
        timeline: ['notifications'],
        marker: {
          notifications: {
            last_read_id: '5678',
          },
        },
      };

      expect(reducer(undefined, action).get('lastRead')).toEqual('5678');
    });

    it('updates the unread count', () => {
      const action = {
        type: MARKER_SAVE_SUCCESS,
        timeline: ['notifications'],
        marker: {
          notifications: {
            last_read_id: '9012',
          },
        },
      };

      const state = ImmutableMap({
        items: ImmutableOrderedMap({
          '9012': ImmutableMap({ id: '9012' }),
          '5678': ImmutableMap({ id: '5678' }),
          '1234': ImmutableMap({ id: '1234' }),
        }),
        unread: 3,
      });

      expect(reducer(state, action).get('unread')).toEqual(0);
    });
  });
});