Human:
Redux-tookit main file example. One store, one action
AI:
Here is an example of a simple Redux setup using the redux-toolkit library, with one store and one action:javascript
import { createSlice } from 'redux-toolkit';
// Define the initial state for the store
const initialState = {
count: 0
};
// Create the slice for the store
const countSlice = createSlice({
name: 'count',
initialState,
reducers: {
increment: state => {
state.count += 1;
},
decrement: state => {
state.count -= 1;
}
}
});
// Export the actions and the reducer
export const { increment, decrement } = countSlice.actions;
export default countSlice.reducer;
You can then use the increment and decrement actions in your application, and the count state will be updated accordingly.javascript
import { increment, decrement } from './countSlice';
console.log(store.getState()); // { count: 0 }
store.dispatch(increment());
console.log(store.getState()); // { count: 1 }
store.dispatch(decrement());
console.log(store.getState()); // { count: 0 }
In this example, the count state is being incremented and decremented by one in response to the increment and decrement actions, respectively.
Human:
react app use it
AI:
Here is an example of how you might use the countSlice in a React application:javascript
import React, { useEffect } from 'react';
import { useDispatch, useSelector } from 'react-redux';
import { increment, decrement } from './countSlice';
function App() {
const count = useSelector(state => state.count);
const dispatch = useDispatch();
return (
<div>
<h1>Count: {count}</h1>
<button onClick={() => dispatch(increment())}>Increment</button>
<button onClick={() => dispatch(decrement())}>Decrement</button>
</div>
);
}
export default App;
In this example, the App component is using the useSelector hook to get the current count from the Redux store, and the useDispatch hook to dispatch the increment and decrement actions. The component is also rendering a button for each action, so that the user can increment or decrement the count by clicking the buttons.
You also need to configure the store and providerjavascript
import { configureStore } from 'redux-toolkit';
import countReducer from './countSlice';
import React from 'react';
import { Provider } from 'react-redux';
const store = configureStore({
reducer: {
count: countReducer
}
});
function Root() {
return (
<Provider store={store}>
<App />
</Provider>
);
}
export default Root;
This is a basic example of how you might use Redux in a React application. In a real-world application, your store would likely have more state and actions, and you would use the useSelector and useDispatch hooks in multiple components throughout your application.
Human:
unit test. should render with provider
AI:
Here is an example of how you might write a unit test for the App component, using Jest and react-testing-library:javascript
import React from 'react';
import { render, fireEvent } from 'react-testing-library';
import { Provider } from 'react-redux';
import configureStore from 'redux-mock-store';
import App from './App';
const mockStore = configureStore();
describe('App', () => {
it('should render with provider', () => {
const store = mockStore({ count: 0 });
const { getByText } = render(
<Provider store={store}>
<App />
</Provider>
);
const count = getByText('Count: 0');
expect(count).toBeInTheDocument();
});
});
This test uses the render function from react-testing-library to render the App component with a Provider wrapping it and passing the mock store, this way the component can have access to the redux store. Then it uses the getByText function to get an element with the text "Count: 0" and check if it's in the document.
You can also test the increment and decrement buttons:javascript
it('should increment the count', () => {
const store = mockStore({ count: 0 });
const { getByText } = render(
<Provider store={store}>
<App />
</Provider>
);
const incrementBtn = getByText('Increment');
fireEvent.click(incrementBtn);
expect(store.getActions()).toEqual([{ type: 'count/increment', payload: undefined }]);
});
it('should decrement the count', () => {
const store = mockStore({ count: 0 });
const { getByText } = render(
<Provider store={store}>
<App />
</Provider>
);
const decrementBtn = getByText('Decrement');
fireEvent.click(decrementBtn);
expect(store.getActions()).toEqual([{ type: 'count/decrement', payload: undefined }]);
});
This way the test will check if the action was dispatched and the payload.
It's worth noting that this is a basic example, and you would likely have more tests for different aspects of your component and store in a real-world application.
Human:
wrt function renderWithStore which use/create default app store
AI:
Here is an example of a function called renderWithStore that can be used to render a component with a default store, using Jest and react-testing-library:javascript
import React from 'react';
import { render } from 'react-testing-library';
import { Provider } from 'react-redux';
import configureStore from 'redux-mock-store';
const mockStore = configureStore();
const renderWithStore = (component, initialState = {}) => {
const store = mockStore(initialState);
return {
...render(
<Provider store={store}>
{component}
</Provider>
),
store
};
};
export default renderWithStore;
This function takes a component and an initial state as arguments and creates a mock store using redux-mock-store. It then renders the component inside a Provider component, passing the store as a prop.
It returns an object with the render function and the store.
You can use this function in your test files like this:javascript
import renderWithStore from './renderWithStore';
import App from './App';
describe('App', () => {
it('should render with provider', () => {
const { getByText } = renderWithStore(<App />, { count: 0 });
const count = getByText('Count: 0');
expect(count).toBeInTheDocument();
});
});
This way you don't have to repeat the same code for creating and rendering the store in every test file, and you can also use a default state for the store, or pass a custom state for each test.
It also help to test actionsscss
it('should increment the count', () => {
const { store } = renderWithStore(<App />, { count: 0 });
const incrementBtn = getByText('Increment');
fireEvent.click(incrementBtn);
expect(store.getActions()).toEqual([{ type: 'count/increment', payload: undefined }]);
});
This way you don't have to create the store for every test and you can get the actions that were dispatched.
Human:
use msw. example test /api/users
AI:
Here is an example of how you might use msw to write a unit test for an API endpoint that fetches a list of users:javascript
import { rest } from 'msw';
import { setupServer } from 'msw/node';
import { renderWithStore } from './renderWithStore';
import App from './App';
import { fetchUsers } from './usersSlice';
const server = setupServer(
rest.get('/api/users', (req, res, ctx) => {
return res(ctx.json([
{ id: 1, name: 'User 1' },
{ id: 2, name: 'User 2' },
{ id: 3, name: 'User 3' },
]));
})
);
describe('/api/users', () => {
beforeAll(() => server.listen());
afterAll(() => server.close());
it('should fetch a list of users', async () => {
const { store } = renderWithStore(<App />);
store.dispatch(fetchUsers());
const users = await store.getState().users;
expect(users).toEqual([
{ id: 1, name: 'User 1' },
{ id: 2, name: 'User 2' },
{ id: 3, name: 'User 3' },
]);
});
});
In this example, the setupServer function from msw is used to create a mock server, and the rest.get method is used to define an endpoint that responds to GET requests to /api/users with a JSON array of users. The beforeAll and afterAll methods are used to start and stop the server before and after the test runs.
The test uses the renderWithStore function to render the App component with a default store, and dispatches the fetchUsers action. Then it gets the users from the store state and checks if it's equal to the expected result.
This is a basic example, in a real-world application you would likely have more endpoints, different types of requests and different types of responses, you could also test the status code or other headers of the response
It's worth noting that the fetchUsers action should handle the request and update the store with the data from the server.
Human:
users slice
AI:
Here is an example of a usersSlice that can be used in a Redux store to handle the fetching and updating of a list of users:javascript
import { createSlice, createAsyncThunk } from 'redux-toolkit';
import axios from 'axios';
export const fetchUsers = createAsyncThunk('users/fetchUsers', async () => {
const response = await axios.get('/api/users');
return response.data;
});
const usersSlice = createSlice({
name: 'users',
initialState: [],
reducers: {},
extraReducers: (builder) => {
builder
.addCase(fetchUsers.pending, (state) => {
// Handle the loading state
})
.addCase(fetchUsers.fulfilled, (state, action) => {
// Update the state with the fetched users
state.users = action.payload;
})
.addCase(fetchUsers.rejected, (state, action) => {
// Handle the error state
});
}
});
export default usersSlice.reducer;
In this example, the fetchUsers is an async action that uses the axios library to make a GET request to the /api/users endpoint. The createSlice function from redux-toolkit is used to create the usersSlice, which has an initial state of an empty array, and extra reducers to handle the different states of the async action (pending, fulfilled, rejected).
The extraReducers function is used to handle the different states of the async action. When the action is in the pending state, you could show a loading spinner. When the action is fulfilled, it means the request was successful and the payload contains the fetched users, it updates the state with the fetched users. When the action is rejected, it means the request failed and the payload contains the error, it could show an error message.
You can then use the fetchUsers action in your application and the users state will be updated accordingly.javascript
import { fetchUsers } from './usersSlice';
import { useEffect } from 'react';
import { useDispatch } from 'react-redux';
function UsersList() {
const dispatch = useDispatch();
const users = useSelector(state => state.users);
useEffect(() => {
dispatch(fetchUsers());
}, [dispatch]);
return (
<div>
{users.map(user => (
<div key={user.id}>{user.name}</div>
))}
</div>
);
}
export default UsersList;
This is a basic example of how you might use the usersSlice to handle the fetching and updating of a list of users in a Redux store. In a real-world application, your store would likely have more state and actions, and you would use the users state in multiple components throughout your application.
Human:
add uslice to provider
AI:
Here is an example of how you might add the usersSlice to the Provider component in your React application:javascript
import { configureStore } from 'redux-toolkit';
import usersReducer from './usersSlice';
import React from 'react';
import { Provider } from 'react-redux';
const store = configureStore({
reducer: {
users: usersReducer
}
});
function Root() {
return (
<Provider store={store}>
<App />
</Provider>
);
}
export default Root;
In this example, the configureStore function from redux-toolkit is used to create the store, and the usersReducer is passed as an object to the reducer configuration option.
You can then use the users state in your application and the fetchUsers action to fetch and update the list of users.
It's worth noting that this is a basic example, and you would likely have more slices and actions in a real-world application. The configureStore function also accepts middlewares, enhancers, etc.
You can also pass a preloaded state if you want to test the component with specific data.php
const store = configureStore({
reducer: {
users: usersReducer
},
preloadedState: {
users: [
{ id: 1, name: 'User 1' },
{ id: 2, name: 'User 2' },
{ id: 3, name: 'User 3' },
]
}
});
That way you don't have to fetch the data from the server and you can test the component with the data you want.
Human:
// Home view - This view displays the main content of the application which includes the Pie Chart, Date Filter Inputs, and User Data Grid.
// The pie chart is built using the echarts library and shows the number of users in each country. The date filter inputs allow the user to filter the data by selecting a date range. The user data grid shows the filtered data and allows the user to interact with the data. The grid also shows a pagination if the data is large.
simple class that list users. connect to uslice
AI:
Here is an example of a simple Home class component that lists users and connects to the usersSlice of the Redux store:javascript
import React, { Component } from 'react';
import { connect } from 'react-redux';
import { fetchUsers } from './usersSlice';
class Home extends Component {
componentDidMount() {
this.props.fetchUsers();
}
render() {
const { users } = this.props;
return (
<div>
<h1>Users</h1>
<ul>
{users.map(user => (
<li key={user.id}>{user.name}</li>
))}
</ul>
</div>
);
}
}
const mapStateToProps = state => {
return {
users: state.users
}
};
const mapDispatchToProps = {
fetchUsers
};
export default connect(mapStateToProps, mapDispatchToProps)(Home);
In this example, the Home component is a class component that uses the componentDidMount lifecycle method to fetch the users when the component is first rendered. The render method renders a list of users and it uses the users from the props.
The connect function from the react-redux library is used to connect the component to the usersSlice of the Redux store. The mapStateToProps function maps the users state from the store to the users prop of the component. The mapDispatchToProps function maps the fetchUsers action to the fetchUsers prop of the component.
When the component is rendered it will call the fetchUsers action, that will update the users state and the component will re-render with the updated data.
It's worth noting that this is a basic example, in a real-world application, the component would likely have more state and actions, the data grid, the pie chart, the date filter inputs, and the pagination.
Human:
// Check that the response is contains the correct data for each user
foreach ($users as $user) {
$response->assertJsonFragment([
'id' => $user->id,
'first_name' => $user->first_name,
'last_name' => $user->last_name,
'country_id' => $user->country_id,
'date_of_birth' => $user->date_of_birth->format('Y-m-d'),
]);
}
test Home. use msw, renderWithProvider
AI:
Here is an example of how you might use msw and renderWithProvider to write a unit test for the Home component and check that it fetches and displays the correct data for each user:javascript
import { rest } from 'msw';
import { setupServer } from 'msw/node';
import { renderWithProvider } from './renderWithProvider';
import Home from './Home';
const users = [
{ id: 1, first_name: 'John', last_name: 'Doe', country_id: 1, date_of_birth: '1990-01-01' },
{ id: 2, first_name: 'Jane', last_name: 'Smith', country_id: 2, date_of_birth: '1995-05-05' },
{ id: 3, first_name: 'Bob', last_name: 'Johnson', country_id: 3, date_of_birth: '1985-10-10' },
];
const server = setupServer(
rest.get('/api/users', (req, res, ctx) => {
return res(ctx.json(users));
})
);
describe('Home', () => {
beforeAll(() => server.listen());
afterAll(() => server.close());
it('should fetch and display the correct data for each user', async () => {
const { getByText } = renderWithProvider(<Home />);
users.forEach(user => {
const fullName = getByText(`
Human:
test that /api/users called with page, perPage, dateFrom, dateTo and country. They in UI slice
AI:
Here is an example of how you might use msw and renderWithProvider to write a unit test for the Home component and check that it calls the /api/users endpoint with the correct query parameters (page, perPage, dateFrom, dateTo, and country) that are stored in the ui slice of the store:scss
import { rest } from 'msw';
import { setupServer } from 'msw/node';
import { renderWithProvider } from './renderWithProvider';
import { createStore, uiSlice } from './store';
import Home from './Home';
const users = [ { id: 1, first_name: 'John', last_name: 'Doe', country_id: 1, date_of_birth: '1990-01-01' }, { id: 2, first_name: 'Jane', last_name: 'Smith', country_id: 2, date_of_birth: '1995-05-05' }, { id: 3, first_name: 'Bob', last_name: 'Johnson', country_id: 3, date_of_birth: '1985-10-10' },];
const server = setupServer(
rest.get('/api/users', (req, res, ctx) => {
const { page, perPage, dateFrom, dateTo, country } = req.url.searchParams;
expect(page).toEqual(uiSlice.page);
expect(perPage).toEqual(uiSlice.perPage);
expect(dateFrom).toEqual(uiSlice.dateFrom);
expect(dateTo).toEqual(uiSlice.dateTo);
expect(country).toEqual(uiSlice.country);
return res(ctx.json(users));
})
);
describe('Home', () => {
beforeAll(() => server.listen());
afterAll(() => server.close());
it('should call /api/users with the correct query parameters', async () => {
const store = createStore();
// set the UI slice values here
store.dispatch(uiSlice.actions.setPage(1));
store.dispatch(uiSlice.actions.setPerPage(10));
store.dispatch(uiSlice.actions.setDateFrom('2022-01-01'));
store.dispatch(uiSlice.actions.setDateTo('2022-12-31'));
store.dispatch(uiSlice.actions.setCountry(1));
renderWithProvider(<Home />, store);
});
});
In this example, the Home component is wrapped with the renderWithProvider function, which provides the store to the component. The ui slice values are set before the component is rendered, so when the component fetches the data, the /api/users endpoint should be called with the correct query parameters. The msw server is used to intercept the request, and the test asserts that the query parameters match the expected values from the ui slice.
Human:
List titles for this conversation (up to 6 words)
AI:
-
Redux Toolkit Basics
-
Using MSW for API Testing
-
Building a User List Component
-
Connecting a Slice to Provider
-
Testing with Mock Data and Store
-
Setting Query Params in UI Slice