Properly testing components passed in as props












0















In the example below I have a component named <BigList /> which accepts a component as props called toggleComponent. I then pass down that component into the render method, this is setup so I can have multiple different types of toggle components. The problem I'm running into is how to properly test the prop methods on the component I'm passing into <BigList />. My code coverage decreases because of it and I'm not really sure how I can mock the onChange handler here.



<BigList
title="Some Props"
toggleComponent={
<Checkboxt
onChange={() =>
someMethod()
}
/>
}
>
<Checkbox
onChange={() =>
anotherMethod()
}
/>
</BigList>


Using Enzyme and Sinon I've attempted to do something like this, but to no avail. I end up with errors relating to the props being inaccessible. I just want to make sure that the onChange handler gets fired on a change event for the toggleComponent props.



const component = shallow(
<ParentComponent />
);
const event = {target: {name: "event", value: "event value"}};
const toggleComponent = component.find('BigList').at(1).props().toggleComponent;
toggleComponent.props().onChange = stub();
toggleComponent.simulate('change', event);

t.equal(
toggleComponent.onChange.callCount,
1,
'Should call onChange'
);









share|improve this question



























    0















    In the example below I have a component named <BigList /> which accepts a component as props called toggleComponent. I then pass down that component into the render method, this is setup so I can have multiple different types of toggle components. The problem I'm running into is how to properly test the prop methods on the component I'm passing into <BigList />. My code coverage decreases because of it and I'm not really sure how I can mock the onChange handler here.



    <BigList
    title="Some Props"
    toggleComponent={
    <Checkboxt
    onChange={() =>
    someMethod()
    }
    />
    }
    >
    <Checkbox
    onChange={() =>
    anotherMethod()
    }
    />
    </BigList>


    Using Enzyme and Sinon I've attempted to do something like this, but to no avail. I end up with errors relating to the props being inaccessible. I just want to make sure that the onChange handler gets fired on a change event for the toggleComponent props.



    const component = shallow(
    <ParentComponent />
    );
    const event = {target: {name: "event", value: "event value"}};
    const toggleComponent = component.find('BigList').at(1).props().toggleComponent;
    toggleComponent.props().onChange = stub();
    toggleComponent.simulate('change', event);

    t.equal(
    toggleComponent.onChange.callCount,
    1,
    'Should call onChange'
    );









    share|improve this question

























      0












      0








      0








      In the example below I have a component named <BigList /> which accepts a component as props called toggleComponent. I then pass down that component into the render method, this is setup so I can have multiple different types of toggle components. The problem I'm running into is how to properly test the prop methods on the component I'm passing into <BigList />. My code coverage decreases because of it and I'm not really sure how I can mock the onChange handler here.



      <BigList
      title="Some Props"
      toggleComponent={
      <Checkboxt
      onChange={() =>
      someMethod()
      }
      />
      }
      >
      <Checkbox
      onChange={() =>
      anotherMethod()
      }
      />
      </BigList>


      Using Enzyme and Sinon I've attempted to do something like this, but to no avail. I end up with errors relating to the props being inaccessible. I just want to make sure that the onChange handler gets fired on a change event for the toggleComponent props.



      const component = shallow(
      <ParentComponent />
      );
      const event = {target: {name: "event", value: "event value"}};
      const toggleComponent = component.find('BigList').at(1).props().toggleComponent;
      toggleComponent.props().onChange = stub();
      toggleComponent.simulate('change', event);

      t.equal(
      toggleComponent.onChange.callCount,
      1,
      'Should call onChange'
      );









      share|improve this question














      In the example below I have a component named <BigList /> which accepts a component as props called toggleComponent. I then pass down that component into the render method, this is setup so I can have multiple different types of toggle components. The problem I'm running into is how to properly test the prop methods on the component I'm passing into <BigList />. My code coverage decreases because of it and I'm not really sure how I can mock the onChange handler here.



      <BigList
      title="Some Props"
      toggleComponent={
      <Checkboxt
      onChange={() =>
      someMethod()
      }
      />
      }
      >
      <Checkbox
      onChange={() =>
      anotherMethod()
      }
      />
      </BigList>


      Using Enzyme and Sinon I've attempted to do something like this, but to no avail. I end up with errors relating to the props being inaccessible. I just want to make sure that the onChange handler gets fired on a change event for the toggleComponent props.



      const component = shallow(
      <ParentComponent />
      );
      const event = {target: {name: "event", value: "event value"}};
      const toggleComponent = component.find('BigList').at(1).props().toggleComponent;
      toggleComponent.props().onChange = stub();
      toggleComponent.simulate('change', event);

      t.equal(
      toggleComponent.onChange.callCount,
      1,
      'Should call onChange'
      );






      reactjs sinon enzyme






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 20 '18 at 16:52









      James IvesJames Ives

      1,3881332




      1,3881332
























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