Refactor some reducers with Immutable.Record

app/soapbox/reducers/__tests__/admin-test.js

@@ -1,21 +1,11 @@
-import {
-  Map as ImmutableMap,
-  List as ImmutableList,
-  OrderedSet as ImmutableOrderedSet,
-} from 'immutable';
+import { Record as ImmutableRecord } from 'immutable';
 
 import reducer from '../admin';
 
 describe('admin reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableMap({
-      reports: ImmutableMap(),
-      openReports: ImmutableOrderedSet(),
-      users: ImmutableMap(),
-      latestUsers: ImmutableOrderedSet(),
-      awaitingApproval: ImmutableOrderedSet(),
-      configs: ImmutableList(),
-      needsReboot: false,
-    }));
+    const result = reducer(undefined, {});
+    expect(ImmutableRecord.isRecord(result)).toBe(true);
+    expect(result.needsReboot).toBe(false);
   });
 });

app/soapbox/reducers/__tests__/alerts-test.js

@@ -1,6 +1,11 @@
-import { List as ImmutableList } from 'immutable';
+import { Record as ImmutableRecord, List as ImmutableList } from 'immutable';
 
-import * as actions from 'soapbox/actions/alerts';
+import {
+  ALERT_SHOW,
+  ALERT_DISMISS,
+  ALERT_CLEAR,
+} from 'soapbox/actions/alerts';
+import { applyActions } from 'soapbox/test_helpers';
 
 import reducer from '../alerts';
 
@@ -9,66 +14,65 @@ describe('alerts reducer', () => {
     expect(reducer(undefined, {})).toEqual(ImmutableList());
   });
 
-  it('should handle ALERT_SHOW', () => {
-    const state = ImmutableList([]);
-    const action = {
-      type: actions.ALERT_SHOW,
-      title: 'alert_title',
-      message: 'this is an alert message',
-    };
-    expect(reducer(state, action).toJS()).toMatchObject([
-      {
+  describe('ALERT_SHOW', () => {
+    it('imports the alert', () => {
+      const action = {
+        type: ALERT_SHOW,
+        title: 'alert_title',
+        message: 'this is an alert message',
+      };
+
+      const expected = [{
         key: 0,
         message: 'this is an alert message',
         title: 'alert_title',
-      },
-    ]);
-  });
+      }];
 
-  // it('should handle ALERT_DISMISS', () => {
-  //   const state = ImmutableList([
-  //     {
-  //       key: 0,
-  //       message: 'message_1',
-  //       title: 'title_1',
-  //     },
-  //     {
-  //       key: 1,
-  //       message: 'message_2',
-  //       title: 'title_2',
-  //     },
-  //   ]);
-  //   const action = {
-  //     type: actions.ALERT_DISMISS,
-  //     alert: { key: 0 },
-  //   };
-  //   expect(reducer(state, action).toJS()).toMatchObject([
-  //     {
-  //       key: 1,
-  //       message: 'message_2',
-  //       title: 'title_2',
-  //     }
-  //   ]);
-  // });
-
-  it('should handle ALERT_CLEAR', () => {
-    const state = ImmutableList([
-      {
-        key: 0,
-        message: 'message_1',
-        title: 'title_1',
-      },
-      {
-        key: 1,
-        message: 'message_2',
-        title: 'title_2',
-      },
-    ]);
-    const action = {
-      type: actions.ALERT_CLEAR,
-    };
-    expect(reducer(state, action).toJS()).toMatchObject({
+      const result = reducer(undefined, action);
+      expect(ImmutableRecord.isRecord(result.get(0))).toBe(true);
+      expect(result.toJS()).toMatchObject(expected);
     });
   });
 
+  describe('ALERT_CLEAR', () => {
+    it('deletes the alerts', () => {
+      const actions = [{
+        type: ALERT_SHOW,
+        title: 'Oops!',
+        message: 'Server is down',
+      }, {
+        type: ALERT_SHOW,
+        title: 'Uh-oh!',
+        message: 'Shit done fucked up',
+      }, {
+        type: ALERT_CLEAR,
+      }];
+
+      const result = applyActions(undefined, actions, reducer);
+      expect(result.isEmpty()).toBe(true);
+    });
+  });
+
+  describe('ALERT_DISMISS', () => {
+    it('deletes an individual alert', () => {
+      const actions = [{
+        type: ALERT_SHOW,
+        title: 'Oops!',
+        message: 'Server is down',
+      }, {
+        type: ALERT_SHOW,
+        title: 'Uh-oh!',
+        message: 'Shit done fucked up',
+      }, {
+        type: ALERT_DISMISS,
+        alert: {
+          key: 0,
+        },
+      }];
+
+      const result = applyActions(undefined, actions, reducer);
+      expect(result.size).toEqual(1);
+      expect(result.get(0).key).toEqual(1);
+    });
+  });
 });

app/soapbox/reducers/__tests__/meta-test.js

@@ -1,9 +1,11 @@
-import { Map as ImmutableMap } from 'immutable';
+import { Record as ImmutableRecord } from 'immutable';
 
 import reducer from '../meta';
 
 describe('meta reducer', () => {
   it('should return the initial state', () => {
-    expect(reducer(undefined, {})).toEqual(ImmutableMap());
+    const result = reducer(undefined, {});
+    expect(ImmutableRecord.isRecord(result)).toBe(true);
+    expect(result.instance_fetch_failed).toBe(false);
   });
 });

app/soapbox/reducers/admin.js

@@ -2,6 +2,7 @@ import {
   Map as ImmutableMap,
   List as ImmutableList,
   Set as ImmutableSet,
+  Record as ImmutableRecord,
   OrderedSet as ImmutableOrderedSet,
   fromJS,
   is,
@@ -20,7 +21,7 @@ import {
   ADMIN_USERS_APPROVE_SUCCESS,
 } from '../actions/admin';
 
-const initialState = ImmutableMap({
+const ReducerRecord = ImmutableRecord({
   reports: ImmutableMap(),
   openReports: ImmutableOrderedSet(),
   users: ImmutableMap(),
@@ -126,7 +127,7 @@ function handleReportDiffs(state, reports) {
   });
 }
 
-export default function admin(state = initialState, action) {
+export default function admin(state = ReducerRecord(), action) {
   switch(action.type) {
   case ADMIN_CONFIG_FETCH_SUCCESS:
   case ADMIN_CONFIG_UPDATE_SUCCESS:

app/soapbox/reducers/admin_log.js

@@ -1,12 +1,13 @@
 import {
   Map as ImmutableMap,
+  Record as ImmutableRecord,
   OrderedSet as ImmutableOrderedSet,
   fromJS,
 } from 'immutable';
 
 import { ADMIN_LOG_FETCH_SUCCESS } from 'soapbox/actions/admin';
 
-const initialState = ImmutableMap({
+const ReducerRecord = ImmutableRecord({
   items: ImmutableMap(),
   index: ImmutableOrderedSet(),
   total: 0,
@@ -34,7 +35,7 @@ const importItems = (state, items, total) => {
   });
 };
 
-export default function admin_log(state = initialState, action) {
+export default function admin_log(state = ReducerRecord(), action) {
   switch(action.type) {
   case ADMIN_LOG_FETCH_SUCCESS:
     return importItems(state, action.items, action.total);

app/soapbox/reducers/alerts.js

@@ -1,4 +1,4 @@
-import { Map as ImmutableMap, List as ImmutableList } from 'immutable';
+import { Record as ImmutableRecord, List as ImmutableList } from 'immutable';
 
 import {
   ALERT_SHOW,
@@ -6,21 +6,38 @@ import {
   ALERT_CLEAR,
 } from '../actions/alerts';
 
-const initialState = ImmutableList([]);
+const AlertRecord = ImmutableRecord({
+  key: 0,
+  title: '',
+  message: '',
+  severity: 'info',
+  actionLabel: '',
+  actionLink: '',
+});
+
+const initialState = ImmutableList();
+
+// Get next key based on last alert
+const getNextKey = state => state.size > 0 ? state.last().get('key') + 1 : 0;
+
+// Import the alert
+const importAlert = (state, alert) => {
+  const key = getNextKey(state);
+  const record = AlertRecord({ ...alert, key });
+  return state.push(record);
+};
+
+// Delete an alert by its key
+const deleteAlert = (state, alert) => {
+  return state.filterNot(item => item.key === alert.key);
+};
 
 export default function alerts(state = initialState, action) {
   switch(action.type) {
   case ALERT_SHOW:
-    return state.push(ImmutableMap({
-      key: state.size > 0 ? state.last().get('key') + 1 : 0,
-      title: action.title,
-      message: action.message,
-      severity: action.severity || 'info',
-      actionLabel: action.actionLabel,
-      actionLink: action.actionLink,
-    }));
+    return importAlert(state, action);
   case ALERT_DISMISS:
-    return state.filterNot(item => item.get('key') === action.alert.key);
+    return deleteAlert(state, action.alert);
   case ALERT_CLEAR:
     return state.clear();
   default:

app/soapbox/reducers/meta.js

@@ -1,12 +1,14 @@
 'use strict';
 
-import { Map as ImmutableMap } from 'immutable';
+import { Record as ImmutableRecord } from 'immutable';
 
 import { INSTANCE_FETCH_FAIL } from 'soapbox/actions/instance';
 
-const initialState = ImmutableMap();
+const ReducerRecord = ImmutableRecord({
+  instance_fetch_failed: false,
+});
 
-export default function meta(state = initialState, action) {
+export default function meta(state = ReducerRecord(), action) {
   switch(action.type) {
   case INSTANCE_FETCH_FAIL:
     return state.set('instance_fetch_failed', true);

app/soapbox/reducers/notifications.js

@@ -32,8 +32,7 @@ import {
 } from '../actions/notifications';
 import { TIMELINE_DELETE } from '../actions/timelines';
 
-// Record for the whole reducer
-const NotificationsRecord = ImmutableRecord({
+const ReducerRecord = ImmutableRecord({
   items: ImmutableOrderedMap(),
   hasMore: true,
   top: false,
@@ -182,7 +181,7 @@ const importMarker = (state, marker) => {
   });
 };
 
-export default function notifications(state = NotificationsRecord(), action) {
+export default function notifications(state = ReducerRecord(), action) {
   switch(action.type) {
   case NOTIFICATIONS_EXPAND_REQUEST:
     return state.set('isLoading', true);