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
























          0






          active

          oldest

          votes











          Your Answer






          StackExchange.ifUsing("editor", function () {
          StackExchange.using("externalEditor", function () {
          StackExchange.using("snippets", function () {
          StackExchange.snippets.init();
          });
          });
          }, "code-snippets");

          StackExchange.ready(function() {
          var channelOptions = {
          tags: "".split(" "),
          id: "1"
          };
          initTagRenderer("".split(" "), "".split(" "), channelOptions);

          StackExchange.using("externalEditor", function() {
          // Have to fire editor after snippets, if snippets enabled
          if (StackExchange.settings.snippets.snippetsEnabled) {
          StackExchange.using("snippets", function() {
          createEditor();
          });
          }
          else {
          createEditor();
          }
          });

          function createEditor() {
          StackExchange.prepareEditor({
          heartbeatType: 'answer',
          autoActivateHeartbeat: false,
          convertImagesToLinks: true,
          noModals: true,
          showLowRepImageUploadWarning: true,
          reputationToPostImages: 10,
          bindNavPrevention: true,
          postfix: "",
          imageUploader: {
          brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
          contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
          allowUrls: true
          },
          onDemand: true,
          discardSelector: ".discard-answer"
          ,immediatelyShowMarkdownHelp:true
          });


          }
          });














          draft saved

          draft discarded


















          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53397815%2fproperly-testing-components-passed-in-as-props%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown

























          0






          active

          oldest

          votes








          0






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes
















          draft saved

          draft discarded




















































          Thanks for contributing an answer to Stack Overflow!


          • Please be sure to answer the question. Provide details and share your research!

          But avoid



          • Asking for help, clarification, or responding to other answers.

          • Making statements based on opinion; back them up with references or personal experience.


          To learn more, see our tips on writing great answers.




          draft saved


          draft discarded














          StackExchange.ready(
          function () {
          StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53397815%2fproperly-testing-components-passed-in-as-props%23new-answer', 'question_page');
          }
          );

          Post as a guest















          Required, but never shown





















































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown

































          Required, but never shown














          Required, but never shown












          Required, but never shown







          Required, but never shown







          Popular posts from this blog

          "Incorrect syntax near the keyword 'ON'. (on update cascade, on delete cascade,)

          Alcedinidae

          Origin of the phrase “under your belt”?