Executing the beforeRouteLeave navigation guard on a vue component for testing purposes

I am facing a challenge with unit testing the routing behavior of a vue component using jest. Specifically, when navigating away from the component, the 'beforeRouteLeave' guard in Vue-router is not triggering during testing, even though it works fine in production.

My testing setup includes jest as the framework and vue-test-utils to mount the component and create a local Vue instance with vue-router.

To see an example of this issue, you can check out the test located in 'src/components/HelloWorld.spec'. Here's the link: https://codesandbox.io/s/72536ojvp6?module=%2Fsrc%2Fcomponents%2FHelloWorld.spec.js

I'm puzzled as to why the router hook is not being called during testing. Any insights on how I can resolve this would be greatly appreciated. Thank you!

javascriptvue.jsjestjsvue-routervue-test-utils

Answer №1

When testing vue router navigation guards, the code below worked effectively for me:

const beforeRouteUpdate = wrapper.vm.$options.beforeRouteUpdate[0];
let nextFun = jest.fn();

// You can pass any object to wrapper.vm because when beforeRouteUpdate is called, it loses its context

beforeRouteUpdate.call(wrapper.vm , "toObj", "fromObj", nextFun);

Check out this github link for the beforeRouteEnter route navigation guard.

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