Assessing Vue.js functions declared within reactive variables through Jest testing

Can you guide me on the best way to test functions that are declared inside reactive variables in VUE? Jest specifies that in order to achieve 100% coverage in the component, these functions need to be tested.

For example, consider the function customData which is located within the reactive variable chartOptions:

export default{
  name: 'component',
  data: function () {
    chartOptions: {
      customData: function ({ val1 }) {
        return val1 > 0 ? val1 * 2 : 0  
      }
        }
  }
}

Your assistance would be greatly appreciated!

Answer №1

When integrating your computed in jest, you can utilize the function by accessing it through

wrapper.vm.charOptions.customData

After that, execute the function as per usual and analyze its results. In order to test branch output, you may need to invoke it multiple times.

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