Files
Rubén Norte 65974e938c Add support for JS debugging in Fantom (#53215)
Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/53215

Changelog: [internal]

This adds a new environment variable to Fantom that allows debugging the JS code in tests.

Usage:

```
FANTOM_DEBUG_JS=1 yarn fantom <test>
```

**Does NOT work in OSS yet**. We need to include a third-party library to send HTTP and WebSocket requests and implement a wrapper on top of it.

Reviewed By: christophpurrer

Differential Revision: D79883372

fbshipit-source-id: d077c373a036033344e61d58274d5cd14028bda4
2025-08-12 05:41:11 -07:00

98 lines
2.5 KiB
JavaScript

/**
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict-local
* @format
*/
import type {FantomTestConfig} from './getFantomTestConfigs';
import formatFantomConfig from './formatFantomConfig';
import path from 'path';
export const PROJECT_ROOT: string = path.resolve(__dirname, '..', '..', '..');
export const OUTPUT_PATH: string = path.resolve(__dirname, '..', '.out');
export const JS_BUILD_OUTPUT_PATH: string = path.join(OUTPUT_PATH, 'js-builds');
export const NATIVE_BUILD_OUTPUT_PATH: string = path.join(
OUTPUT_PATH,
'native-builds',
);
export const JS_TRACES_OUTPUT_PATH: string = path.join(
OUTPUT_PATH,
'js-traces',
);
export const JS_HEAP_SNAPSHOTS_OUTPUT_PATH: string = path.join(
OUTPUT_PATH,
'js-heap-snapshots',
);
export function getTestBuildOutputPath(): string {
const fantomRunID = process.env.__FANTOM_RUN_ID__;
if (fantomRunID == null) {
throw new Error(
'Expected Fantom run ID to be set by global setup, but it was not (process.env.__FANTOM_RUN_ID__ is null)',
);
}
return path.join(JS_BUILD_OUTPUT_PATH, fantomRunID);
}
export function buildJSTracesOutputPath({
testPath,
testConfig,
isMultiConfigTest,
}: {
testPath: string,
testConfig: FantomTestConfig,
isMultiConfigTest: boolean,
}): string {
const fileNameParts = [path.basename(testPath)];
if (isMultiConfigTest) {
const configSummary = formatFantomConfig(testConfig, {style: 'short'});
if (configSummary !== '') {
fileNameParts.push(configSummary);
}
}
fileNameParts.push(new Date().toISOString());
const fileName = fileNameParts.join('-') + '.cpuprofile';
return path.join(JS_TRACES_OUTPUT_PATH, fileName);
}
const JS_HEAP_SNAPSHOT_OUTPUT_PATH_TOKEN = '${timestamp}';
export function buildJSHeapSnapshotsOutputPathTemplate({
testPath,
testConfig,
isMultiConfigTest,
}: {
testPath: string,
testConfig: FantomTestConfig,
isMultiConfigTest: boolean,
}): [string, string] {
const fileNameParts = [path.basename(testPath)];
if (isMultiConfigTest) {
const configSummary = formatFantomConfig(testConfig, {style: 'short'});
if (configSummary !== '') {
fileNameParts.push(configSummary);
}
}
fileNameParts.push(JS_HEAP_SNAPSHOT_OUTPUT_PATH_TOKEN);
const fileName = fileNameParts.join('-') + '.heapsnapshot';
return [
path.join(JS_HEAP_SNAPSHOTS_OUTPUT_PATH, fileName),
JS_HEAP_SNAPSHOT_OUTPUT_PATH_TOKEN,
];
}