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Move waitForUpdate to test-utils

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This commit is contained in:
Luke Barnard
2018-05-02 11:19:01 +01:00
parent 3d478c3c3a
commit dc20f32ad7
2 changed files with 21 additions and 20 deletions
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20
test/test-utils.js
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@ -302,3 +302,23 @@ export function wrapInMatrixClientContext(WrappedComponent) {
}
return Wrapper;
}
/**
* Call fn before calling componentDidUpdate on a react component instance, inst.
* @param {React.Component} inst an instance of a React component.
* @returns {Promise} promise that resolves when componentDidUpdate is called on
* given component instance.
*/
export function waitForUpdate(inst) {
return new Promise((resolve, reject) => {
const cdu = inst.componentDidUpdate;
inst.componentDidUpdate = (prevProps, prevState, snapshot) => {
resolve();
if (cdu) cdu(prevProps, prevState, snapshot);
inst.componentDidUpdate = cdu;
};
});
}