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TestRunner.ts
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TestRunner.ts
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import { Component, MutableRefObject, ReactElement, useRef } from 'react';
import {
type NullableTestValue,
type LockObject,
type Operation,
type SharedValueSnapshot,
type TestCase,
type TestConfiguration,
type TestSuite,
type TestSummary,
type TestValue,
type TrackerCallCount,
ComparisonMode,
DescribeDecorator,
TestDecorator,
} from './types';
import { TestComponent } from './TestComponent';
import { getTrackerCallCount, render, stopRecordingAnimationUpdates, unmockAnimationTimer } from './RuntimeTestsApi';
import { makeMutable, runOnUI, runOnJS, SharedValue } from 'react-native-reanimated';
import { applyMarkdown, color, formatString, indentNestingLevel } from './stringFormatUtils';
import { createUpdatesContainer } from './UpdatesContainer';
import { Matchers, nullableMatch } from './Matchers';
import { assertMockedAnimationTimestamp, assertTestCase, assertTestSuite } from './Asserts';
let callTrackerRegistryJS: Record<string, number> = {};
const callTrackerRegistryUI = makeMutable<Record<string, number>>({});
function callTrackerJS(name: string) {
if (!callTrackerRegistryJS[name]) {
callTrackerRegistryJS[name] = 0;
}
callTrackerRegistryJS[name]++;
}
const notificationRegistry: Record<string, boolean> = {};
function notifyJS(name: string) {
notificationRegistry[name] = true;
}
export class TestRunner {
private _testSuites: TestSuite[] = [];
private _currentTestSuite: TestSuite | null = null;
private _currentTestCase: TestCase | null = null;
private _renderHook: (component: ReactElement<Component> | null) => void = () => {};
private _renderLock: LockObject = { lock: false };
private _valueRegistry: Record<string, SharedValue> = {};
private _wasRenderedNull: boolean = false;
private _includesOnly: boolean = false;
private _summary: TestSummary = {
passed: 0,
failed: 0,
skipped: 0,
failedTests: [] as Array<string>,
startTime: Date.now(),
endTime: 0,
};
private _threadLock: LockObject = {
lock: false,
};
public notify(name: string) {
'worklet';
if (_WORKLET) {
runOnJS(notifyJS)(name);
} else {
notifyJS(name);
}
}
public async waitForNotify(name: string) {
return new Promise(resolve => {
const interval = setInterval(() => {
if (notificationRegistry[name]) {
clearInterval(interval);
resolve(true);
}
}, 10);
});
}
public configure(config: TestConfiguration) {
this._renderHook = config.render;
return this._renderLock;
}
public async render(component: ReactElement<Component> | null) {
if (!component && this._wasRenderedNull) {
return;
}
this._wasRenderedNull = !component;
this._renderLock.lock = true;
try {
this._renderHook(component);
} catch (e) {
console.log(e);
}
return this.waitForPropertyValueChange(this._renderLock, 'lock');
}
public async clearRenderOutput() {
return await this.render(null);
}
public describe(name: string, buildSuite: () => void, decorator: DescribeDecorator | null) {
if (decorator === DescribeDecorator.ONLY) {
this._includesOnly = true;
}
let index; // We have to manage the order of the nested describes
if (this._currentTestSuite === null) {
index = this._testSuites.length; // If we have no parent describe, we append at the end
} else {
const parentIndex = this._testSuites.findIndex(testSuite => {
return testSuite === this._currentTestSuite;
});
const parentNesting = this._currentTestSuite.nestingLevel;
index = parentIndex + 1;
while (index < this._testSuites.length && this._testSuites[index].nestingLevel > parentNesting) {
// Append after last child of the parent describe
// The children have bigger nesting level
index += 1;
}
}
this._testSuites.splice(index, 0, {
name: applyMarkdown(name),
buildSuite,
testCases: [],
nestingLevel: (this._currentTestSuite?.nestingLevel || 0) + 1,
decorator: decorator ? decorator : this._currentTestSuite?.decorator ? this._currentTestSuite?.decorator : null,
});
}
public test(name: string, run: () => void, decorator: TestDecorator | null, warningMessage = '') {
assertTestSuite(this._currentTestSuite);
if (decorator === TestDecorator.ONLY) {
this._includesOnly = true;
}
this._currentTestSuite.testCases.push(
decorator === TestDecorator.WARN || decorator === TestDecorator.FAILING
? {
name: applyMarkdown(name),
run,
componentsRefs: {},
callsRegistry: {},
errors: [],
decorator,
warningMessage: warningMessage,
}
: {
name: applyMarkdown(name),
run,
componentsRefs: {},
callsRegistry: {},
errors: [],
decorator,
},
);
}
public testEachErrorMsg<T>(examples: Array<T>, decorator: TestDecorator) {
return (name: string, expectedWarning: string, testCase: (example: T) => void) => {
examples.forEach((example, index) => {
const currentTestCase = async () => {
await testCase(example);
};
this.test(
formatString(name, example, index),
currentTestCase,
decorator,
formatString(expectedWarning, example, index),
);
});
};
}
public testEach<T>(examples: Array<T>, decorator: TestDecorator | null) {
return (name: string, testCase: (example: T, index?: number) => void) => {
examples.forEach((example, index) => {
const currentTestCase = async () => {
await testCase(example, index);
};
this.test(formatString(name, example, index), currentTestCase, decorator);
});
};
}
public useTestRef(name: string): MutableRefObject<Component | null> {
// eslint-disable-next-line react-hooks/rules-of-hooks
const ref = useRef(null);
assertTestCase(this._currentTestCase);
this._currentTestCase.componentsRefs[name] = ref;
return ref;
}
public callTracker(name: string) {
'worklet';
if (_WORKLET) {
if (!callTrackerRegistryUI.value[name]) {
callTrackerRegistryUI.value[name] = 0;
}
callTrackerRegistryUI.value[name]++;
callTrackerRegistryUI.value = { ...callTrackerRegistryUI.value };
} else {
callTrackerJS(name);
}
}
public registerValue(name: string, value: SharedValue) {
'worklet';
this._valueRegistry[name] = value;
}
public async getRegisteredValue(name: string): Promise<SharedValueSnapshot> {
const jsValue = this._valueRegistry[name].value;
const sharedValue = this._valueRegistry[name];
const valueContainer = makeMutable<unknown>(null);
await this.runOnUIBlocking(() => {
'worklet';
valueContainer.value = sharedValue.value;
});
const uiValue = valueContainer.value;
return {
name,
onJS: jsValue as TestValue,
onUI: uiValue as TestValue,
};
}
public getTrackerCallCount(name: string): TrackerCallCount {
return {
name,
onJS: callTrackerRegistryJS[name] ?? 0,
onUI: callTrackerRegistryUI.value[name] ?? 0,
};
}
public getTestComponent(name: string): TestComponent {
assertTestCase(this._currentTestCase);
const componentRef = this._currentTestCase.componentsRefs[name];
return new TestComponent(componentRef);
}
public async runTests() {
console.log('\n');
for (const testSuite of this._testSuites) {
this._currentTestSuite = testSuite;
await testSuite.buildSuite();
this._currentTestSuite = null;
}
for (const testSuite of this._testSuites) {
let skipTestSuite = testSuite.skip;
if (this._includesOnly) {
skipTestSuite = skipTestSuite || !(testSuite.decorator === DescribeDecorator.ONLY);
for (const testCase of testSuite.testCases) {
if (testCase.decorator === TestDecorator.ONLY) {
skipTestSuite = false;
} else testCase.skip = testCase.skip || !(testSuite.decorator === DescribeDecorator.ONLY);
}
}
testSuite.skip = skipTestSuite;
}
for (const testSuite of this._testSuites) {
await this.runTestSuite(testSuite);
}
this._testSuites = [];
console.log('End of tests run 🏁');
this._summary.endTime = Date.now();
this.printSummary();
}
private async runTestSuite(testSuite: TestSuite) {
if (testSuite.skip) {
this._summary.skipped += testSuite.testCases.length;
return;
}
this._currentTestSuite = testSuite;
console.log(`${indentNestingLevel(testSuite.nestingLevel)} ${testSuite.name}`);
if (testSuite.beforeAll) {
await testSuite.beforeAll();
}
for (const testCase of testSuite.testCases) {
if (!testCase.skip) {
await this.runTestCase(testSuite, testCase);
} else {
this._summary.skipped++;
}
}
if (testSuite.afterAll) {
await testSuite.afterAll();
}
this._currentTestSuite = null;
}
private async runTestCase(testSuite: TestSuite, testCase: TestCase) {
callTrackerRegistryUI.value = {};
callTrackerRegistryJS = {};
this._currentTestCase = testCase;
if (testSuite.beforeEach) {
await testSuite.beforeEach();
}
if (testCase.decorator === TestDecorator.FAILING || testCase.decorator === TestDecorator.WARN) {
const consoleTrackerRef = testCase.decorator === TestDecorator.FAILING ? 'console.error' : 'console.warn';
const message = makeMutable('');
const newConsoleFuncJS = (warning: string) => {
this.callTracker(consoleTrackerRef);
message.value = warning.split('\n\nThis error is located at:')[0];
};
console.error = newConsoleFuncJS;
console.warn = newConsoleFuncJS;
const callTrackerCopy = this.callTracker;
runOnUI(() => {
'worklet';
const newConsoleFuncUI = (warning: string) => {
callTrackerCopy(consoleTrackerRef);
message.value = warning.split('\n\nThis error is located at:')[0];
};
console.error = newConsoleFuncUI;
console.warn = newConsoleFuncUI;
})();
await testCase.run();
this.expect(getTrackerCallCount(consoleTrackerRef)).toBeCalled(1);
if (testCase.warningMessage) {
this.expect(message.value).toBe(testCase.warningMessage, ComparisonMode.STRING);
}
} else {
await testCase.run();
}
this.showTestCaseSummary(testCase, testSuite.nestingLevel);
if (testSuite.afterEach) {
await testSuite.afterEach();
}
this._currentTestCase = null;
await render(null);
await unmockAnimationTimer();
await stopRecordingAnimationUpdates();
}
private showTestCaseSummary(testCase: TestCase, nestingLevel: number) {
let mark;
if (testCase.errors.length > 0) {
this._summary.failed++;
this._summary.failedTests.push(testCase.name);
mark = color('✖', 'red');
} else {
this._summary.passed++;
mark = color('✔', 'green');
}
console.log(`${indentNestingLevel(nestingLevel)} ${mark} ${color(testCase.name, 'gray')}`);
for (const error of testCase.errors) {
console.log(`${indentNestingLevel(nestingLevel)}\t${error}`);
}
}
public expect(currentValue: TestValue): Matchers {
assertTestCase(this._currentTestCase);
return new Matchers(currentValue, this._currentTestCase);
}
public expectNullable(currentValue: NullableTestValue) {
assertTestCase(this._currentTestCase);
nullableMatch(currentValue, this._currentTestCase);
}
public expectNotNullable(currentValue: NullableTestValue) {
assertTestCase(this._currentTestCase);
nullableMatch(currentValue, this._currentTestCase, true);
}
public beforeAll(job: () => void) {
assertTestSuite(this._currentTestSuite);
this._currentTestSuite.beforeAll = job;
}
public afterAll(job: () => void) {
assertTestSuite(this._currentTestSuite);
this._currentTestSuite.afterAll = job;
}
public beforeEach(job: () => void) {
assertTestSuite(this._currentTestSuite);
this._currentTestSuite.beforeEach = job;
}
public afterEach(job: () => void) {
assertTestSuite(this._currentTestSuite);
this._currentTestSuite.afterEach = job;
}
private waitForPropertyValueChange(targetObject: LockObject, targetProperty: 'lock', initialValue = true) {
return new Promise(resolve => {
const interval = setInterval(() => {
if (targetObject[targetProperty] !== initialValue) {
clearInterval(interval);
resolve(targetObject[targetProperty]);
}
}, 10);
});
}
public async runOnUIBlocking(worklet: () => void) {
const unlock = () => (this._threadLock.lock = false);
this._threadLock.lock = true;
runOnUI(() => {
'worklet';
worklet();
runOnJS(unlock)();
})();
await this.waitForPropertyValueChange(this._threadLock, 'lock', true);
}
public async recordAnimationUpdates() {
const updatesContainer = createUpdatesContainer(this);
const recordAnimationUpdates = updatesContainer.pushAnimationUpdates;
const recordLayoutAnimationUpdates = updatesContainer.pushLayoutAnimationUpdates;
await this.runOnUIBlocking(() => {
'worklet';
const originalUpdateProps = global._IS_FABRIC ? global._updatePropsFabric : global._updatePropsPaper;
global.originalUpdateProps = originalUpdateProps;
const mockedUpdateProps = (operations: Operation[]) => {
recordAnimationUpdates(operations);
originalUpdateProps(operations);
};
if (global._IS_FABRIC) {
global._updatePropsFabric = mockedUpdateProps;
} else {
global._updatePropsPaper = mockedUpdateProps;
}
const originalNotifyAboutProgress = global._notifyAboutProgress;
global.originalNotifyAboutProgress = originalNotifyAboutProgress;
global._notifyAboutProgress = (tag: number, value: Record<string, unknown>, isSharedTransition: boolean) => {
recordLayoutAnimationUpdates(tag, value);
originalNotifyAboutProgress(tag, value, isSharedTransition);
};
});
return updatesContainer;
}
public async stopRecordingAnimationUpdates() {
await this.runOnUIBlocking(() => {
'worklet';
if (global.originalUpdateProps) {
if (global._IS_FABRIC) {
global._updatePropsFabric = global.originalUpdateProps;
} else {
global._updatePropsPaper = global.originalUpdateProps;
}
global.originalUpdateProps = undefined;
}
if (global.originalNotifyAboutProgress) {
global._notifyAboutProgress = global.originalNotifyAboutProgress;
global.originalNotifyAboutProgress = undefined;
}
});
}
public async mockAnimationTimer() {
await this.runOnUIBlocking(() => {
'worklet';
global.mockedAnimationTimestamp = 0;
global.originalGetAnimationTimestamp = global._getAnimationTimestamp;
global._getAnimationTimestamp = () => {
if (global.mockedAnimationTimestamp === undefined) {
throw new Error("Animation timestamp wasn't initialized");
}
return global.mockedAnimationTimestamp;
};
let originalRequestAnimationFrame = global.requestAnimationFrame;
global.originalRequestAnimationFrame = originalRequestAnimationFrame;
(global as any).requestAnimationFrame = (callback: Function) => {
originalRequestAnimationFrame(() => {
callback(global._getAnimationTimestamp());
});
};
global.originalFlushAnimationFrame = global.__flushAnimationFrame;
global.__flushAnimationFrame = (_frameTimestamp: number) => {
global.mockedAnimationTimestamp! += 16;
global.__frameTimestamp = global.mockedAnimationTimestamp;
global.originalFlushAnimationFrame!(global.mockedAnimationTimestamp!);
};
});
}
public async setAnimationTimestamp(timestamp: number) {
await this.runOnUIBlocking(() => {
'worklet';
assertMockedAnimationTimestamp(global.mockedAnimationTimestamp);
global.mockedAnimationTimestamp = timestamp;
});
}
public async advanceAnimationByTime(time: number) {
await this.runOnUIBlocking(() => {
'worklet';
assertMockedAnimationTimestamp(global.mockedAnimationTimestamp);
global.mockedAnimationTimestamp += time;
});
}
public async advanceAnimationByFrames(frameCount: number) {
await this.runOnUIBlocking(() => {
'worklet';
assertMockedAnimationTimestamp(global.mockedAnimationTimestamp);
global.mockedAnimationTimestamp += frameCount * 16;
});
}
public async unmockAnimationTimer() {
await this.runOnUIBlocking(() => {
'worklet';
if (global.originalGetAnimationTimestamp) {
global._getAnimationTimestamp = global.originalGetAnimationTimestamp;
global.originalGetAnimationTimestamp = undefined;
}
if (global.originalRequestAnimationFrame) {
(global.requestAnimationFrame as any) = global.originalRequestAnimationFrame;
global.originalRequestAnimationFrame = undefined;
}
if (global.originalFlushAnimationFrame) {
global.__flushAnimationFrame = global.originalFlushAnimationFrame;
global.originalFlushAnimationFrame = undefined;
}
if (global.mockedAnimationTimestamp) {
global.mockedAnimationTimestamp = undefined;
}
});
}
public wait(delay: number) {
return new Promise(resolve => {
setTimeout(resolve, delay);
});
}
private printSummary() {
const { passed, failed, failedTests, startTime, endTime, skipped } = this._summary;
console.log('\n');
console.log(
`🧮 Tests summary: ${color(passed, 'green')} passed, ${color(failed, 'red')} failed, ${color(
skipped,
'orange',
)} skipped`,
);
console.log(`⏱️ Total time: ${Math.round(((endTime - startTime) / 1000) * 100) / 100}s`);
if (failed > 0) {
console.log('❌ Failed tests:');
for (const failedTest of failedTests) {
console.log(`\t- ${failedTest}`);
}
} else {
console.log('✅ All tests passed!');
}
console.log('\n');
}
}