feat(test runner): record trace after a test-scoped fixture teardown times out

This commit is contained in:
Dmitry Gozman 2024-08-12 15:55:05 +01:00
parent a30a8805c9
commit 817eac3850
8 changed files with 159 additions and 60 deletions

View file

@ -40,7 +40,7 @@ export type FixtureRegistration = {
// Custom title to be used instead of the name, internal-only.
customTitle?: string;
// Fixture with a separate timeout does not count towards the test time.
timeout?: number;
timeout?: number | 'trace';
// Names of the dependencies, comes from the declaration "({ foo, bar }) => {...}"
deps: string[];
// Unique id, to differentiate between fixtures with the same name.
@ -103,7 +103,7 @@ export class FixturePool {
for (const entry of Object.entries(fixtures)) {
const name = entry[0];
let value = entry[1];
let options: { auto: FixtureAuto, scope: FixtureScope, option: boolean, timeout: number | undefined, customTitle?: string, box?: boolean } | undefined;
let options: { auto: FixtureAuto, scope: FixtureScope, option: boolean, timeout: number | 'trace' | undefined, customTitle?: string, box?: boolean } | undefined;
if (isFixtureTuple(value)) {
options = {
auto: value[1].auto ?? false,

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@ -297,7 +297,7 @@ const playwrightFixtures: Fixtures<TestFixtures, WorkerFixtures> = ({
clientInstrumentation.removeListener(csiListener);
await artifactsRecorder.didFinishTest();
}, { auto: 'all-hooks-included', title: 'trace recording', box: true } as any],
}, { auto: 'all-hooks-included', title: 'trace recording', box: true, timeout: 'trace' } as any],
_contextFactory: [async ({ browser, video, _reuseContext, _combinedContextOptions /** mitigate dep-via-auto lack of traceability */ }, use, testInfo) => {
const testInfoImpl = testInfo as TestInfoImpl;

View file

@ -17,7 +17,7 @@
import { formatLocation, filterStackFile } from '../util';
import { ManualPromise } from 'playwright-core/lib/utils';
import type { TestInfoImpl } from './testInfo';
import { TimeoutManagerError, type FixtureDescription, type RunnableDescription } from './timeoutManager';
import { type TimeSlot, type FixtureDescription, type RunnableDescription } from './timeoutManager';
import { fixtureParameterNames, type FixturePool, type FixtureRegistration, type FixtureScope } from '../common/fixtures';
import type { WorkerInfo } from '../../types/test';
import type { Location } from '../../types/testReporter';
@ -49,10 +49,8 @@ class Fixture {
title,
phase: 'setup',
location,
slot: this.registration.timeout === undefined ? undefined : {
timeout: this.registration.timeout,
elapsed: 0,
}
slot: this.registration.timeout === 'trace' ? this.runner.traceSlot :
(this.registration.timeout === undefined ? undefined : { timeout: this.registration.timeout, elapsed: 0 }),
};
this._teardownDescription = { ...this._setupDescription, phase: 'teardown' };
}
@ -125,19 +123,31 @@ class Fixture {
}
async teardown(testInfo: TestInfoImpl, runnable: RunnableDescription) {
try {
const fixtureRunnable = { ...runnable, fixture: this._teardownDescription };
// Do not even start the teardown for a fixture that does not have any
// time remaining in the time slot. This avoids cascading timeouts.
if (!testInfo._timeoutManager.isTimeExhaustedFor(fixtureRunnable)) {
await testInfo._runAsStage({
title: `fixture: ${this.registration.name}`,
runnable: { ...runnable, fixture: this._teardownDescription },
runnable: fixtureRunnable,
stepInfo: this._stepInfo,
}, async () => {
await this._teardownInternal();
});
}
} finally {
// To preserve fixtures integrity, forcefully cleanup fixtures
// that cannnot teardown due to a timeout or an error.
for (const dep of this._deps)
dep._usages.delete(this);
this.runner.instanceForId.delete(this.registration.id);
}
}
private async _teardownInternal() {
if (typeof this.registration.fn !== 'function')
return;
try {
if (this._usages.size !== 0) {
// TODO: replace with assert.
console.error('Internal error: fixture integrity at', this._teardownDescription.title); // eslint-disable-line no-console
@ -148,15 +158,6 @@ class Fixture {
this._useFuncFinished = undefined;
await this._selfTeardownComplete;
}
} finally {
this._cleanupInstance();
}
}
_cleanupInstance() {
for (const dep of this._deps)
dep._usages.delete(this);
this.runner.instanceForId.delete(this.registration.id);
}
_collectFixturesInTeardownOrder(scope: FixtureScope, collector: Set<Fixture>) {
@ -172,6 +173,7 @@ export class FixtureRunner {
private testScopeClean = true;
pool: FixturePool | undefined;
instanceForId = new Map<string, Fixture>();
traceSlot?: TimeSlot;
setPool(pool: FixturePool) {
if (!this.testScopeClean)
@ -203,27 +205,18 @@ export class FixtureRunner {
const collector = new Set<Fixture>();
for (const fixture of fixtures)
fixture._collectFixturesInTeardownOrder(scope, collector);
try {
let firstError: Error | undefined;
for (const fixture of collector) {
try {
await fixture.teardown(testInfo, runnable);
} catch (error) {
if (error instanceof TimeoutManagerError)
throw error;
firstError = firstError ?? error;
}
}
if (firstError)
throw firstError;
} finally {
// To preserve fixtures integrity, forcefully cleanup fixtures that did not teardown
// due to a timeout in one of them.
for (const fixture of collector)
fixture._cleanupInstance();
if (scope === 'test')
this.testScopeClean = true;
}
if (firstError)
throw firstError;
}
async resolveParametersForFunction(fn: Function, testInfo: TestInfoImpl, autoFixtures: 'worker' | 'test' | 'all-hooks-only', runnable: RunnableDescription): Promise<object | null> {

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@ -62,6 +62,12 @@ export class TimeoutManager {
this._running.timeoutPromise.reject(this._createTimeoutError(this._running));
}
isTimeExhaustedFor(runnable: RunnableDescription) {
const slot = runnable.fixture?.slot || runnable.slot || this._defaultSlot;
// Note: the "-1" here matches the +1 in _updateTimeout.
return slot.timeout > 0 && (slot.elapsed >= slot.timeout - 1);
}
async withRunnable<T>(runnable: RunnableDescription | undefined, cb: () => Promise<T>): Promise<T> {
if (!runnable)
return await cb();
@ -99,7 +105,10 @@ export class TimeoutManager {
return;
}
running.deadline = running.start + (running.slot.timeout - running.slot.elapsed);
const timeout = running.deadline - monotonicTime();
// Compensate for Node.js troubles with timeouts that can fire too early.
// We add an extra millisecond which seems to be enough.
// See https://github.com/nodejs/node/issues/26578.
const timeout = running.deadline - monotonicTime() + 1;
if (timeout <= 0)
running.timeoutPromise.reject(this._createTimeoutError(running));
else

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@ -266,8 +266,11 @@ export class WorkerMain extends ProcessRunner {
}
};
if (!this._isStopped)
const traceSlot = { timeout: this._project.project.timeout, elapsed: 0 };
if (!this._isStopped) {
this._fixtureRunner.setPool(test._pool!);
this._fixtureRunner.traceSlot = traceSlot;
}
const suites = getSuites(test);
const reversedSuites = suites.slice().reverse();
@ -307,7 +310,7 @@ export class WorkerMain extends ProcessRunner {
testInfo._allowSkips = true;
await testInfo._runAsStage({ title: 'setup and test' }, async () => {
await testInfo._runAsStage({ title: 'start tracing', runnable: { type: 'test' } }, async () => {
await testInfo._runAsStage({ title: 'start tracing', runnable: { type: 'test', slot: traceSlot } }, async () => {
// Ideally, "trace" would be an config-level option belonging to the
// test runner instead of a fixture belonging to Playwright.
// However, for backwards compatibility, we have to read it from a fixture today.
@ -458,8 +461,7 @@ export class WorkerMain extends ProcessRunner {
}).catch(() => {}); // Ignore the top-level error, it is already inside TestInfo.errors.
}
const tracingSlot = { timeout: this._project.project.timeout, elapsed: 0 };
await testInfo._runAsStage({ title: 'stop tracing', runnable: { type: 'test', slot: tracingSlot } }, async () => {
await testInfo._runAsStage({ title: 'stop tracing', runnable: { type: 'test', slot: traceSlot } }, async () => {
await testInfo._tracing.stopIfNeeded();
}).catch(() => {}); // Ignore the top-level error, it is already inside TestInfo.errors.

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@ -625,7 +625,31 @@ test('uncaught error in beforeEach should not be masked by another error', async
expect(result.output).toContain('Received: 1');
});
test('should report error from fixture teardown when beforeAll times out', async ({ runInlineTest }) => {
test('should report error from worker fixture teardown when beforeAll times out', async ({ runInlineTest }) => {
const result = await runInlineTest({
'a.test.js': `
import { test as base, expect } from '@playwright/test';
const test = base.extend({
foo: [async ({}, use) => {
let cb;
await use(new Promise((f, r) => cb = r));
cb(new Error('Oh my!'));
}, { scope: 'worker' }],
});
test.beforeAll(async ({ foo }, testInfo) => {
await foo;
});
test('passing', () => {
});
`,
}, { timeout: 1000 });
expect(result.exitCode).toBe(1);
expect(result.failed).toBe(1);
expect(result.output).toContain('"beforeAll" hook timeout of 1000ms exceeded.');
expect(result.output).toContain('Error: Oh my!');
});
test('should not report error from test fixture teardown when beforeAll times out', async ({ runInlineTest }) => {
const result = await runInlineTest({
'a.test.js': `
import { test as base, expect } from '@playwright/test';
@ -646,7 +670,7 @@ test('should report error from fixture teardown when beforeAll times out', async
expect(result.exitCode).toBe(1);
expect(result.failed).toBe(1);
expect(result.output).toContain('"beforeAll" hook timeout of 1000ms exceeded.');
expect(result.output).toContain('Error: Oh my!');
expect(result.output).not.toContain('Error: Oh my!');
});
test('should not hang and report results when worker process suddenly exits during afterAll', async ({ runInlineTest }) => {

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@ -1225,4 +1225,44 @@ test('should not nest top level expect into unfinished api calls ', {
]);
});
test('should record trace after fixture teardown timeout', {
annotation: { type: 'issue', description: 'https://github.com/microsoft/playwright/issues/30718' },
}, async ({ runInlineTest }) => {
const result = await runInlineTest({
'a.spec.ts': `
import { test as base, expect } from '@playwright/test';
const test = base.extend({
fixture: async ({}, use) => {
await use('foo');
await new Promise(() => {});
},
});
// Note: it is important that "fixture" is last, so that it runs the teardown first.
test('fails', async ({ page, fixture }) => {
await page.evaluate(() => console.log('from the page'));
});
`,
}, { trace: 'on', timeout: '3000' }, { DEBUG: 'pw:test' });
expect(result.exitCode).toBe(1);
expect(result.failed).toBe(1);
const tracePath = test.info().outputPath('test-results', 'a-fails', 'trace.zip');
const trace = await parseTrace(tracePath);
expect(trace.actionTree).toEqual([
'Before Hooks',
' fixture: browser',
' browserType.launch',
' fixture: context',
' browser.newContext',
' fixture: page',
' browserContext.newPage',
' fixture: fixture',
'page.evaluate',
'After Hooks',
' fixture: fixture',
'Worker Cleanup',
' fixture: browser',
]);
// Check console events to make sure that library trace is recorded.
expect(trace.events).toContainEqual(expect.objectContaining({ type: 'console', text: 'from the page' }));
});

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@ -558,3 +558,34 @@ test('should allow custom worker fixture timeout longer than force exit cap', as
expect(result.output).toContain(`Error: Oh my!`);
expect(result.output).toContain(`1 error was not a part of any test, see above for details`);
});
test('should run fixture teardown with custom timeout after test timeout', {
annotation: { type: 'issue', description: 'https://github.com/microsoft/playwright/issues/31537' },
}, async ({ runInlineTest }) => {
const result = await runInlineTest({
'a.spec.ts': `
import { test as base, expect } from '@playwright/test';
const test = base.extend({
foo: [async ({}, use) => {
console.log('\\n%%foo setup');
await use('foo');
console.log('\\n%%foo teardown');
}, { timeout: 2000 }],
});
test('times out', async ({ foo }) => {
console.log('\\n%%test start');
await new Promise(() => {});
console.log('\\n%%test end');
});
`
}, { timeout: 2000 });
expect(result.exitCode).toBe(1);
expect(result.failed).toBe(1);
expect(result.outputLines).toEqual([
'foo setup',
'test start',
'foo teardown',
]);
});