92 lines
2.8 KiB
TypeScript
92 lines
2.8 KiB
TypeScript
/*
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Copyright 2022 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import { mount } from "enzyme";
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import { sleep } from "matrix-js-sdk/src/utils";
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import React, { useEffect, useState } from "react";
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import { act } from "react-dom/test-utils";
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import { useLatestResult } from "../../src/hooks/useLatestResult";
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function LatestResultsComponent({ query, doRequest }) {
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const [value, setValueInternal] = useState<number>(0);
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const [updateQuery, updateResult] = useLatestResult(setValueInternal);
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useEffect(() => {
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updateQuery(query);
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doRequest(query).then(it => {
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updateResult(query, it);
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});
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}, [doRequest, query, updateQuery, updateResult]);
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return <div>
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{ value }
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</div>;
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}
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describe("useLatestResult", () => {
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it("should return results", async () => {
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const doRequest = async (query) => {
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await sleep(20);
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return query;
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};
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const wrapper = mount(<LatestResultsComponent query={0} doRequest={doRequest} />);
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await act(async () => {
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await sleep(25);
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});
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expect(wrapper.text()).toContain("0");
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wrapper.setProps({ doRequest, query: 1 });
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await act(async () => {
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await sleep(15);
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});
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wrapper.setProps({ doRequest, query: 2 });
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await act(async () => {
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await sleep(15);
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});
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expect(wrapper.text()).toContain("0");
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await act(async () => {
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await sleep(15);
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});
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expect(wrapper.text()).toContain("2");
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});
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it("should prevent out-of-order results", async () => {
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const doRequest = async (query) => {
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await sleep(query);
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return query;
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};
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const wrapper = mount(<LatestResultsComponent query={0} doRequest={doRequest} />);
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await act(async () => {
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await sleep(5);
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});
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expect(wrapper.text()).toContain("0");
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wrapper.setProps({ doRequest, query: 50 });
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await act(async () => {
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await sleep(5);
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});
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wrapper.setProps({ doRequest, query: 1 });
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await act(async () => {
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await sleep(5);
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});
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expect(wrapper.text()).toContain("1");
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await act(async () => {
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await sleep(50);
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});
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expect(wrapper.text()).toContain("1");
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});
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});
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