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Jest + Enzyme React Testing ignores input with maxLength attribute



The Next CEO of Stack OverflowTesting changes to React component state and spying on instance methods using enzymeReact tests with jest, enzyme beahve strangelGetting started testing React components with Enzyme and JestJest / Enzyme - Props not set on React Redux ContainerMocking clientHeight and scrollHeight in React + Enzyme for testJest + Enzyme: test Redux-formCan't log the value of an enzyme shallow wrapper in react-native jestTesting react ag-grid with Jest/EnzymeEnzyme, Jest, React - two related inputs, one does not change stateHow to Test changing REACT selector value with JEST










0















I am new to jest and enzyme, and I want to test my React components with it. The Problem is, that Enzyme seems to ignore attributes, such as disabled, or maxLength. To be specific, I wrote a component called TextInput the props disabled, value, maxLength, ... get directly mapped into an <input type=text /> field.



When I now test it like:



test('empty TextInput change with maxLength', () => 
const wrapper = setup(
maxLength: 10
);
wrapper.find('input').simulate('change',
preventDefault () ,
target:
value: 'New Text Content',
maxLength: 10

);
expect(wrapper.state().value).toEqual('New Text C');
);


The test fails, because the value is New Text Content, but when I log the state in the Browser, the value is New Text C



What am I doing wrong? Please help.


Here is the setup function if anyone needs it.



import React from 'react';
import TextInput from './TextInput.js';
import Enzyme, shallow from 'enzyme';
import Adapter from 'enzyme-adapter-react-16';
Enzyme.configure(
adapter: new Adapter()
);

const setup = propOverrides =>
const props = Object.assign(

id: 'test',
label: 'Textinput test'
,
propOverrides
);

const wrapper = shallow(<TextInput ...props />);

return
props,
wrapper
;
;









share|improve this question


























    0















    I am new to jest and enzyme, and I want to test my React components with it. The Problem is, that Enzyme seems to ignore attributes, such as disabled, or maxLength. To be specific, I wrote a component called TextInput the props disabled, value, maxLength, ... get directly mapped into an <input type=text /> field.



    When I now test it like:



    test('empty TextInput change with maxLength', () => 
    const wrapper = setup(
    maxLength: 10
    );
    wrapper.find('input').simulate('change',
    preventDefault () ,
    target:
    value: 'New Text Content',
    maxLength: 10

    );
    expect(wrapper.state().value).toEqual('New Text C');
    );


    The test fails, because the value is New Text Content, but when I log the state in the Browser, the value is New Text C



    What am I doing wrong? Please help.


    Here is the setup function if anyone needs it.



    import React from 'react';
    import TextInput from './TextInput.js';
    import Enzyme, shallow from 'enzyme';
    import Adapter from 'enzyme-adapter-react-16';
    Enzyme.configure(
    adapter: new Adapter()
    );

    const setup = propOverrides =>
    const props = Object.assign(

    id: 'test',
    label: 'Textinput test'
    ,
    propOverrides
    );

    const wrapper = shallow(<TextInput ...props />);

    return
    props,
    wrapper
    ;
    ;









    share|improve this question
























      0












      0








      0








      I am new to jest and enzyme, and I want to test my React components with it. The Problem is, that Enzyme seems to ignore attributes, such as disabled, or maxLength. To be specific, I wrote a component called TextInput the props disabled, value, maxLength, ... get directly mapped into an <input type=text /> field.



      When I now test it like:



      test('empty TextInput change with maxLength', () => 
      const wrapper = setup(
      maxLength: 10
      );
      wrapper.find('input').simulate('change',
      preventDefault () ,
      target:
      value: 'New Text Content',
      maxLength: 10

      );
      expect(wrapper.state().value).toEqual('New Text C');
      );


      The test fails, because the value is New Text Content, but when I log the state in the Browser, the value is New Text C



      What am I doing wrong? Please help.


      Here is the setup function if anyone needs it.



      import React from 'react';
      import TextInput from './TextInput.js';
      import Enzyme, shallow from 'enzyme';
      import Adapter from 'enzyme-adapter-react-16';
      Enzyme.configure(
      adapter: new Adapter()
      );

      const setup = propOverrides =>
      const props = Object.assign(

      id: 'test',
      label: 'Textinput test'
      ,
      propOverrides
      );

      const wrapper = shallow(<TextInput ...props />);

      return
      props,
      wrapper
      ;
      ;









      share|improve this question














      I am new to jest and enzyme, and I want to test my React components with it. The Problem is, that Enzyme seems to ignore attributes, such as disabled, or maxLength. To be specific, I wrote a component called TextInput the props disabled, value, maxLength, ... get directly mapped into an <input type=text /> field.



      When I now test it like:



      test('empty TextInput change with maxLength', () => 
      const wrapper = setup(
      maxLength: 10
      );
      wrapper.find('input').simulate('change',
      preventDefault () ,
      target:
      value: 'New Text Content',
      maxLength: 10

      );
      expect(wrapper.state().value).toEqual('New Text C');
      );


      The test fails, because the value is New Text Content, but when I log the state in the Browser, the value is New Text C



      What am I doing wrong? Please help.


      Here is the setup function if anyone needs it.



      import React from 'react';
      import TextInput from './TextInput.js';
      import Enzyme, shallow from 'enzyme';
      import Adapter from 'enzyme-adapter-react-16';
      Enzyme.configure(
      adapter: new Adapter()
      );

      const setup = propOverrides =>
      const props = Object.assign(

      id: 'test',
      label: 'Textinput test'
      ,
      propOverrides
      );

      const wrapper = shallow(<TextInput ...props />);

      return
      props,
      wrapper
      ;
      ;






      unit-testing jestjs enzyme






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 8 at 13:13









      S.BabovicS.Babovic

      141112




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