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oviava/test.js

Last active September 18, 2016 08:58
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test.js
class Input extends Component {
constructor() {
this.state = {
value: 0,
isValid: true,
};
}
changeHandler = (event) => {
// do stuff
}
render {
return <input onChange={this.changeHandler}/>
}
}
// test
() => {
const mockFunc = jest.fn();
Input.prototype.changeHandler = mockFunc;
const comp = mount(<Input />);
comp.find('input').simulate('change', { target: { value: 99 }});
expect(mockFunc).toBeCalled();
}
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