test(07-02): add failing tests for sendMessage async thunk with optimistic updates
Add unit tests for sendMessage optimistic UI flow: - Test pending sets loading status - Test pending adds optimistic message immediately - Test pending initializes channel if needed - Test fulfilled replaces optimistic message with real one - Test rejected removes optimistic message - Test other messages preserved during replace/remove Tests fail as expected - async thunk not yet implemented. Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
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Nuwan
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@ -649,6 +649,216 @@ describe('fetchChatHistory async thunk', () => {
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});
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});
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describe('sendMessage async thunk', () => {
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// Import will be added in implementation phase
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// This is the RED phase - tests should fail
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let sendMessage;
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test('sets loading state on pending', () => {
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const action = {
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type: 'sessionChat/sendMessage/pending',
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meta: {
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arg: {
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channel: 'session-abc',
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message: 'Hello world',
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optimisticId: 'temp-1',
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userId: 'user-1',
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userName: 'John Doe'
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}
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}
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};
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const state = {
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sendStatus: 'idle',
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sendError: null,
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messagesByChannel: { 'session-abc': [] },
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unreadCounts: {},
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isWindowOpen: false,
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activeChannel: null
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};
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const newState = sessionChatReducer(state, action);
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expect(newState.sendStatus).toBe('loading');
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expect(newState.sendError).toBeNull();
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});
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test('adds message optimistically on pending', () => {
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const action = {
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type: 'sessionChat/sendMessage/pending',
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meta: {
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arg: {
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channel: 'session-abc',
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message: 'Hello world',
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optimisticId: 'temp-1',
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userId: 'user-1',
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userName: 'John Doe'
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}
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}
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};
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const state = {
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messagesByChannel: { 'session-abc': [] },
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sendStatus: 'idle',
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sendError: null,
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unreadCounts: {},
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isWindowOpen: false,
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activeChannel: null
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};
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const newState = sessionChatReducer(state, action);
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expect(newState.messagesByChannel['session-abc']).toHaveLength(1);
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expect(newState.messagesByChannel['session-abc'][0].id).toBe('temp-1');
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expect(newState.messagesByChannel['session-abc'][0].message).toBe('Hello world');
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expect(newState.messagesByChannel['session-abc'][0].senderId).toBe('user-1');
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expect(newState.messagesByChannel['session-abc'][0].senderName).toBe('John Doe');
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expect(newState.messagesByChannel['session-abc'][0].isOptimistic).toBe(true);
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});
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test('initializes channel if not exists on pending', () => {
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const action = {
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type: 'sessionChat/sendMessage/pending',
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meta: {
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arg: {
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channel: 'new-channel',
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message: 'First message',
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optimisticId: 'temp-1',
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userId: 'user-1',
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userName: 'John'
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}
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}
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};
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const state = {
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messagesByChannel: {},
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sendStatus: 'idle',
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sendError: null,
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unreadCounts: {},
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isWindowOpen: false,
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activeChannel: null
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};
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const newState = sessionChatReducer(state, action);
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expect(newState.messagesByChannel['new-channel']).toBeDefined();
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expect(newState.messagesByChannel['new-channel']).toHaveLength(1);
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});
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test('replaces optimistic message with real one on fulfilled', () => {
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const state = {
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messagesByChannel: {
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'session-abc': [
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{ id: 'temp-1', message: 'Hello world', senderId: 'user-1', isOptimistic: true }
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]
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},
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sendStatus: 'loading',
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sendError: null,
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unreadCounts: {},
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isWindowOpen: false,
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activeChannel: null
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};
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const action = {
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type: 'sessionChat/sendMessage/fulfilled',
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meta: {
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arg: { optimisticId: 'temp-1', channel: 'session-abc' }
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},
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payload: {
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message: {
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id: 'msg-real',
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message: 'Hello world',
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sender_id: 'user-1',
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sender_name: 'John Doe',
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created_at: '2026-01-26T12:00:00Z',
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channel: 'session'
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}
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}
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};
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const newState = sessionChatReducer(state, action);
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expect(newState.messagesByChannel['session-abc']).toHaveLength(1);
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expect(newState.messagesByChannel['session-abc'][0].id).toBe('msg-real');
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expect(newState.messagesByChannel['session-abc'][0].isOptimistic).toBeUndefined();
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expect(newState.sendStatus).toBe('succeeded');
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});
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test('removes optimistic message on rejected', () => {
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const state = {
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messagesByChannel: {
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'session-abc': [
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{ id: 'temp-1', message: 'Hello world', senderId: 'user-1', isOptimistic: true }
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]
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},
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sendStatus: 'loading',
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sendError: null,
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unreadCounts: {},
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isWindowOpen: false,
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activeChannel: null
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};
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const action = {
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type: 'sessionChat/sendMessage/rejected',
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meta: {
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arg: { optimisticId: 'temp-1', channel: 'session-abc' }
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},
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error: { message: 'Network error' }
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};
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const newState = sessionChatReducer(state, action);
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expect(newState.messagesByChannel['session-abc']).toHaveLength(0);
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expect(newState.sendStatus).toBe('failed');
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expect(newState.sendError).toBe('Network error');
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});
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test('keeps other messages when replacing optimistic message', () => {
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const state = {
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messagesByChannel: {
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'session-abc': [
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{ id: 'msg-1', message: 'Existing', createdAt: '2026-01-26T11:00:00Z' },
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{ id: 'temp-1', message: 'Optimistic', senderId: 'user-1', isOptimistic: true }
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]
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},
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sendStatus: 'loading',
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sendError: null,
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unreadCounts: {},
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isWindowOpen: false,
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activeChannel: null
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};
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const action = {
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type: 'sessionChat/sendMessage/fulfilled',
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meta: {
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arg: { optimisticId: 'temp-1', channel: 'session-abc' }
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},
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payload: {
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message: {
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id: 'msg-real',
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message: 'Optimistic',
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sender_id: 'user-1',
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created_at: '2026-01-26T12:00:00Z'
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}
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}
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};
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const newState = sessionChatReducer(state, action);
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expect(newState.messagesByChannel['session-abc']).toHaveLength(2);
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expect(newState.messagesByChannel['session-abc'][0].id).toBe('msg-1');
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expect(newState.messagesByChannel['session-abc'][1].id).toBe('msg-real');
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});
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test('keeps other messages when removing optimistic message', () => {
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const state = {
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messagesByChannel: {
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'session-abc': [
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{ id: 'msg-1', message: 'Existing', createdAt: '2026-01-26T11:00:00Z' },
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{ id: 'temp-1', message: 'Failed', senderId: 'user-1', isOptimistic: true }
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]
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},
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sendStatus: 'loading',
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sendError: null,
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unreadCounts: {},
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isWindowOpen: false,
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activeChannel: null
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};
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const action = {
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type: 'sessionChat/sendMessage/rejected',
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meta: {
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arg: { optimisticId: 'temp-1', channel: 'session-abc' }
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},
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error: { message: 'Failed to send' }
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};
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const newState = sessionChatReducer(state, action);
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expect(newState.messagesByChannel['session-abc']).toHaveLength(1);
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expect(newState.messagesByChannel['session-abc'][0].id).toBe('msg-1');
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});
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});
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describe('sessionChat integration', () => {
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test('complete message flow: receive → set active → open window → mark read', () => {
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const initialState = {
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