Enzyme test for empty array on componentWillUnMount dispatch action

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I'm trying to test whether the redux store changes to an empty array by checking the props on the container when I dispatch and action on componentWillUnMount.

So I mean, test the change ["foo", "bar"] from my redux reducer to an empty array .

My code looks as follows:

Container:

import React, Component from 'react';
import connect from 'react-redux';
import * as actions from '../../store/actions/actions';

class MyComponent extends Component


 componentWillUnmount()
 this.props.cleanSearch();
 

 render()
 
 return(
 <div>
 
 Whatever
 </div>
 )
 


const mapStateToProps = state=>
 const itemsSearched = state.itemsSearched;
 return
 itemsSearched
 


const mapDispatchToProps = dispatch =>

 return
 cleanSearch: ()=> dispatch(actions.cleanSearch())
 


export default connect(mapStateToProps, mapDispatchToProps)(MyComponent);

My reducer:

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case CLEAN_SEARCH:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

And my test code looks like this:

MyComponent.test.js

it('cleans redux prop searches when componentWillUnMount is called', ()=>
 const spy = jest.spyOn(MyComponent.prototype, 'componentWillUnmount');
 const wrapper = mount(<MyComponent store=storeUtil itemsSearched=mocks.itemsSearched() />);
 expect(wrapper.props().itemsSearched).toEqual(mocks.itemsSearched());
 wrapper.instance().componentWillUnmount();
 expect(wrapper.props().itemsSearched).toEqual();

 )

However what I receive is the ["foo", "bar"] array instead of the empty expected one.

edited 2 days ago

LazerBass

1,2183921

asked Nov 10 at 12:10

jaymate

add a comment |

up vote
0
down vote

favorite

I'm trying to test whether the redux store changes to an empty array by checking the props on the container when I dispatch and action on componentWillUnMount.

So I mean, test the change ["foo", "bar"] from my redux reducer to an empty array .

My code looks as follows:

Container:

import React, Component from 'react';
import connect from 'react-redux';
import * as actions from '../../store/actions/actions';

class MyComponent extends Component


 componentWillUnmount()
 this.props.cleanSearch();
 

 render()
 
 return(
 <div>
 
 Whatever
 </div>
 )
 


const mapStateToProps = state=>
 const itemsSearched = state.itemsSearched;
 return
 itemsSearched
 


const mapDispatchToProps = dispatch =>

 return
 cleanSearch: ()=> dispatch(actions.cleanSearch())
 


export default connect(mapStateToProps, mapDispatchToProps)(MyComponent);

My reducer:

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case CLEAN_SEARCH:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

And my test code looks like this:

MyComponent.test.js

it('cleans redux prop searches when componentWillUnMount is called', ()=>
 const spy = jest.spyOn(MyComponent.prototype, 'componentWillUnmount');
 const wrapper = mount(<MyComponent store=storeUtil itemsSearched=mocks.itemsSearched() />);
 expect(wrapper.props().itemsSearched).toEqual(mocks.itemsSearched());
 wrapper.instance().componentWillUnmount();
 expect(wrapper.props().itemsSearched).toEqual();

 )

However what I receive is the ["foo", "bar"] array instead of the empty expected one.

edited 2 days ago

LazerBass

1,2183921

asked Nov 10 at 12:10

jaymate

add a comment |

up vote
0
down vote

favorite

I'm trying to test whether the redux store changes to an empty array by checking the props on the container when I dispatch and action on componentWillUnMount.

So I mean, test the change ["foo", "bar"] from my redux reducer to an empty array .

My code looks as follows:

Container:

import React, Component from 'react';
import connect from 'react-redux';
import * as actions from '../../store/actions/actions';

class MyComponent extends Component


 componentWillUnmount()
 this.props.cleanSearch();
 

 render()
 
 return(
 <div>
 
 Whatever
 </div>
 )
 


const mapStateToProps = state=>
 const itemsSearched = state.itemsSearched;
 return
 itemsSearched
 


const mapDispatchToProps = dispatch =>

 return
 cleanSearch: ()=> dispatch(actions.cleanSearch())
 


export default connect(mapStateToProps, mapDispatchToProps)(MyComponent);

My reducer:

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case CLEAN_SEARCH:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

And my test code looks like this:

MyComponent.test.js

it('cleans redux prop searches when componentWillUnMount is called', ()=>
 const spy = jest.spyOn(MyComponent.prototype, 'componentWillUnmount');
 const wrapper = mount(<MyComponent store=storeUtil itemsSearched=mocks.itemsSearched() />);
 expect(wrapper.props().itemsSearched).toEqual(mocks.itemsSearched());
 wrapper.instance().componentWillUnmount();
 expect(wrapper.props().itemsSearched).toEqual();

 )

However what I receive is the ["foo", "bar"] array instead of the empty expected one.

edited 2 days ago

LazerBass

1,2183921

asked Nov 10 at 12:10

jaymate

I'm trying to test whether the redux store changes to an empty array by checking the props on the container when I dispatch and action on componentWillUnMount.

So I mean, test the change ["foo", "bar"] from my redux reducer to an empty array .

My code looks as follows:

Container:

import React, Component from 'react';
import connect from 'react-redux';
import * as actions from '../../store/actions/actions';

class MyComponent extends Component


 componentWillUnmount()
 this.props.cleanSearch();
 

 render()
 
 return(
 <div>
 
 Whatever
 </div>
 )
 


const mapStateToProps = state=>
 const itemsSearched = state.itemsSearched;
 return
 itemsSearched
 


const mapDispatchToProps = dispatch =>

 return
 cleanSearch: ()=> dispatch(actions.cleanSearch())
 


export default connect(mapStateToProps, mapDispatchToProps)(MyComponent);

My reducer:

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case CLEAN_SEARCH:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

And my test code looks like this:

MyComponent.test.js

it('cleans redux prop searches when componentWillUnMount is called', ()=>
 const spy = jest.spyOn(MyComponent.prototype, 'componentWillUnmount');
 const wrapper = mount(<MyComponent store=storeUtil itemsSearched=mocks.itemsSearched() />);
 expect(wrapper.props().itemsSearched).toEqual(mocks.itemsSearched());
 wrapper.instance().componentWillUnmount();
 expect(wrapper.props().itemsSearched).toEqual();

 )

However what I receive is the ["foo", "bar"] array instead of the empty expected one.

import React, Component from 'react';
import connect from 'react-redux';
import * as actions from '../../store/actions/actions';

class MyComponent extends Component


 componentWillUnmount()
 this.props.cleanSearch();
 

 render()
 
 return(
 <div>
 
 Whatever
 </div>
 )
 


const mapStateToProps = state=>
 const itemsSearched = state.itemsSearched;
 return
 itemsSearched
 


const mapDispatchToProps = dispatch =>

 return
 cleanSearch: ()=> dispatch(actions.cleanSearch())
 


export default connect(mapStateToProps, mapDispatchToProps)(MyComponent);

import React, Component from 'react';
import connect from 'react-redux';
import * as actions from '../../store/actions/actions';

class MyComponent extends Component


 componentWillUnmount()
 this.props.cleanSearch();
 

 render()
 
 return(
 <div>
 
 Whatever
 </div>
 )
 


const mapStateToProps = state=>
 const itemsSearched = state.itemsSearched;
 return
 itemsSearched
 


const mapDispatchToProps = dispatch =>

 return
 cleanSearch: ()=> dispatch(actions.cleanSearch())
 


export default connect(mapStateToProps, mapDispatchToProps)(MyComponent);

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case CLEAN_SEARCH:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case CLEAN_SEARCH:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

it('cleans redux prop searches when componentWillUnMount is called', ()=>
 const spy = jest.spyOn(MyComponent.prototype, 'componentWillUnmount');
 const wrapper = mount(<MyComponent store=storeUtil itemsSearched=mocks.itemsSearched() />);
 expect(wrapper.props().itemsSearched).toEqual(mocks.itemsSearched());
 wrapper.instance().componentWillUnmount();
 expect(wrapper.props().itemsSearched).toEqual();

 )

it('cleans redux prop searches when componentWillUnMount is called', ()=>
 const spy = jest.spyOn(MyComponent.prototype, 'componentWillUnmount');
 const wrapper = mount(<MyComponent store=storeUtil itemsSearched=mocks.itemsSearched() />);
 expect(wrapper.props().itemsSearched).toEqual(mocks.itemsSearched());
 wrapper.instance().componentWillUnmount();
 expect(wrapper.props().itemsSearched).toEqual();

 )

reactjs jestjs enzyme

edited 2 days ago

LazerBass

1,2183921

asked Nov 10 at 12:10

jaymate

edited 2 days ago

LazerBass

1,2183921

asked Nov 10 at 12:10

jaymate

edited 2 days ago

LazerBass

1,2183921

edited 2 days ago

LazerBass

1,2183921

edited 2 days ago

LazerBass

1,2183921

asked Nov 10 at 12:10

jaymate

asked Nov 10 at 12:10

jaymate

asked Nov 10 at 12:10

jaymate

add a comment |

1 Answer
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up vote
0
down vote

its confusing because you have all caps CLASS_CASE and camelCase too... shouldn't the switch case be cleanSearch and not case CLEAN_SEARCH becasue you're calling it via mapDispatchToProps so like this:

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case cleanSearch:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

answered Nov 10 at 12:30

Frankenmint

7341622

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oldest

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up vote
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down vote

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case cleanSearch:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

answered Nov 10 at 12:30

Frankenmint

7341622

add a comment |

up vote
0
down vote

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case cleanSearch:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

answered Nov 10 at 12:30

Frankenmint

7341622

add a comment |

up vote
0
down vote

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case cleanSearch:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

answered Nov 10 at 12:30

Frankenmint

7341622

import 
 CLEAN_SEARCH
 from '../actions/types';

import * as utils from '../../utils/udpaterState';

const initialState = 
 itemsSearched: ["foo", "bar"]


const reducer= (prevState = initialState, action)=>
 let newState = null;
 switch(action.type)
 case cleanSearch:
 newState = itemsSearched: 
 return utils.updaterState(prevState, newState);
 default:
 return prevState;
 



export default reducer;

answered Nov 10 at 12:30

Frankenmint

7341622

answered Nov 10 at 12:30

Frankenmint

7341622

answered Nov 10 at 12:30

Frankenmint

7341622

answered Nov 10 at 12:30

Frankenmint

7341622

add a comment |

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