react-native-web-internals
Version:
React Native for Web
83 lines (82 loc) • 2.72 kB
JavaScript
import { jsx as _jsx } from "react/jsx-runtime";
import { cleanup, render } from "@testing-library/react";
import * as React from "react";
import { act } from "react-dom/test-utils";
import useMergeRefs from "../index.native.js";
describe("modules/useMergeRefs/index.js", function () {
function TestComponent(param) {
var {
refs,
...rest
} = param,
mergedRef = useMergeRefs(...refs);
return /* @__PURE__ */_jsx("div", {
ref: mergedRef,
...rest
});
}
afterEach(cleanup), test("handles no refs", function () {
act(function () {
render(/* @__PURE__ */_jsx(TestComponent, {
refs: []
}));
});
}), test("merges any number of varying refs", function () {
var callbackRef1 = jest.fn(),
callbackRef2 = jest.fn(),
objectRef1 = /* @__PURE__ */React.createRef(),
objectRef2 = /* @__PURE__ */React.createRef(),
nullRef = null;
act(function () {
render(/* @__PURE__ */_jsx(TestComponent, {
refs: [callbackRef1, callbackRef2, objectRef1, objectRef2, nullRef]
}));
}), expect(callbackRef1).toHaveBeenCalledTimes(1), expect(callbackRef2).toHaveBeenCalledTimes(1), expect(objectRef1.current).toBeInstanceOf(HTMLDivElement), expect(objectRef2.current).toBeInstanceOf(HTMLDivElement);
}), test("ref is called when ref changes", function () {
var ref = jest.fn(),
nextRef = jest.fn(),
rerender;
act(function () {
({
rerender
} = render(/* @__PURE__ */_jsx(TestComponent, {
refs: [ref]
})));
}), expect(ref).toHaveBeenCalled(), act(function () {
rerender(/* @__PURE__ */_jsx(TestComponent, {
refs: [nextRef]
}));
}), expect(nextRef).toHaveBeenCalled();
}), test("ref is not called for each rerender", function () {
var ref = jest.fn(),
rerender;
act(function () {
({
rerender
} = render(/* @__PURE__ */_jsx(TestComponent, {
refs: [ref]
})));
}), expect(ref).toHaveBeenCalledTimes(1), act(function () {
rerender(/* @__PURE__ */_jsx(TestComponent, {
refs: [ref]
}));
}), expect(ref).toHaveBeenCalledTimes(1);
}), test("ref is not called for props changes", function () {
var ref = jest.fn(),
rerender;
act(function () {
({
rerender
} = render(/* @__PURE__ */_jsx(TestComponent, {
id: "foo",
refs: [ref]
})));
}), expect(ref).toHaveBeenCalledTimes(1), act(function () {
rerender(/* @__PURE__ */_jsx(TestComponent, {
id: "bar",
refs: [ref]
}));
}), expect(ref).toHaveBeenCalledTimes(1);
});
});
//# sourceMappingURL=index-test.native.js.map