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Let's say I have a method in my React component:
doSomething() {
// method uses this.props and this.state
}
I want to test this method for different props and states that are set. So how can I call it? MyClass.prototype.doSomething will call the function, but then this.props and this.state are not set.
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Enzyme is invoked by calling a function __enzyme_autodiff with the function being differentiated, followed by the corresponding primal and shadow arguments. This will result in the original function being run with the corresponding derivative values being computed.
As of Enzyme v3, the shallow API does call React lifecycle methods such as componentDidMount and componentDidUpdate .
Shallow rendering lets you render a component “one level deep” and assert facts about what its render method returns, without worrying about the behavior of child components, which are not instantiated or rendered.
You can use enzyme's instance function to get an instance of the rendered component, and call methods on it.
const wrapper = shallow(<MyClass {...props} />)
wrapper.instance().doSomething()
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