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test: try to stabilize test-child-process-fork-exec-path.js #27277

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test: try to stabalize test-child-process-fork-exec-path.js
refack Apr 17, 2019
907567e
sqaush! normalize
refack Apr 17, 2019
f075707
Squash! remove old comment
refack Apr 18, 2019
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sqaush! normalize
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@refack
refack committed Apr 17, 2019
commit 907567e135bd08eb511d537553d869bdb74c87fe
58 changes: 28 additions & 30 deletions test/parallel/test-child-process-fork-exec-path.js
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Original file line number Diff line number Diff line change
Expand Up @@ -21,44 +21,42 @@

'use strict';
const common = require('../common');

// Test that `fork()` respects the `execPath` option.

const tmpdir = require('../common/tmpdir');
const { addLibraryPath } = require('../common/shared-lib-util');
const assert = require('assert');
const fs = require('fs');
const { COPYFILE_FICLONE } = fs.constants;
const path = require('path');
const tmpdir = require('../common/tmpdir');
const fs = require('fs');
const { fork } = require('child_process');

const msg = { test: 'this' };
const nodePath = process.execPath;
const copyPath = path.join(tmpdir.path, 'node-copy.exe');
const { addLibraryPath } = require('../common/shared-lib-util');

addLibraryPath(process.env);

// Child
if (process.env.FORK) {
assert(process.send);
assert.strictEqual(process.argv[0], copyPath);
assert.strictEqual(process.execPath, copyPath);
assert.ok(process.send);
process.send(msg);
process.exit();
} else {
tmpdir.refresh();
try {
fs.unlinkSync(copyPath);
} catch (e) {
if (e.code !== 'ENOENT') throw e;
}
fs.copyFileSync(nodePath, copyPath, COPYFILE_FICLONE);
fs.chmodSync(copyPath, '0755');

// slow but simple
const envCopy = JSON.parse(JSON.stringify(process.env));
envCopy.FORK = 'true';
const child = require('child_process').fork(__filename, {
execPath: copyPath,
env: envCopy
});
child.on('message', common.mustCall(function(recv) {
assert.deepStrictEqual(msg, recv);
}));
child.on('exit', common.mustCall(function(code) {
assert.strictEqual(code, 0);
}));
return process.exit();
}

// Parent
tmpdir.refresh();
assert.strictEqual(fs.existsSync(copyPath), false);
fs.copyFileSync(nodePath, copyPath, fs.constants.COPYFILE_FICLONE);
fs.chmodSync(copyPath, '0755');

// slow but simple
const envCopy = Object.assign({}, process.env, { 'FORK': 'true' });
const child = fork(__filename, { execPath: copyPath, env: envCopy });
child.on('message', common.mustCall(function(recv) {
assert.deepStrictEqual(recv, msg);
}));
child.on('exit', common.mustCall(function(code) {
assert.strictEqual(code, 0);
}));