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setup-tests.js
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import "react-native";
import "jest-enzyme";
import Adapter from "enzyme-adapter-react-16";
import Enzyme from "enzyme";
/**
* Set up DOM in node.js environment for Enzyme to mount to
*/
const { JSDOM } = require("jsdom");
const jsdom = new JSDOM("<!doctype html><html><body></body></html>", {
url: "http://localhost",
});
const { window } = jsdom;
function copyProps(src, target) {
Object.defineProperties(target, {
...Object.getOwnPropertyDescriptors(src),
...Object.getOwnPropertyDescriptors(target),
});
}
global.window = window;
global.document = window.document;
global.navigator = {
userAgent: "node.js",
};
copyProps(window, global);
/**
* Set up Enzyme to mount to DOM, simulate events,
* and inspect the DOM in tests.
*/
Enzyme.configure({ adapter: new Adapter() });
/**
* Ignore some expected warnings
* see: https://jestjs.io/docs/en/tutorial-react.html#snapshot-testing-with-mocks-enzyme-and-react-16
* see https://github.com/Root-App/react-native-mock-render/issues/6
*/
const originalConsoleError = console.error;
console.error = (message) => {
if (message.startsWith("Warning:")) {
return;
}
originalConsoleError(message);
};