mirror of https://gitee.com/openkylin/nodejs.git
56 lines
1.5 KiB
JavaScript
56 lines
1.5 KiB
JavaScript
'use strict';
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require('../common');
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// This test checks that the maxBuffer option for child_process.spawnSync()
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// works as expected.
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const assert = require('assert');
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const spawnSync = require('child_process').spawnSync;
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const msgOut = 'this is stdout';
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const msgOutBuf = Buffer.from(`${msgOut}\n`);
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const args = [
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'-e',
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`console.log("${msgOut}");`
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];
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// Verify that an error is returned if maxBuffer is surpassed.
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{
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const ret = spawnSync(process.execPath, args, { maxBuffer: 1 });
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assert.ok(ret.error, 'maxBuffer should error');
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assert.strictEqual(ret.error.errno, 'ENOBUFS');
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// We can have buffers larger than maxBuffer because underneath we alloc 64k
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// that matches our read sizes.
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assert.deepStrictEqual(ret.stdout, msgOutBuf);
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}
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// Verify that a maxBuffer size of Infinity works.
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{
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const ret = spawnSync(process.execPath, args, { maxBuffer: Infinity });
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assert.ifError(ret.error);
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assert.deepStrictEqual(ret.stdout, msgOutBuf);
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}
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// Default maxBuffer size is 1024 * 1024.
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{
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const args = ['-e', "console.log('a'.repeat(1024 * 1024))"];
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const ret = spawnSync(process.execPath, args);
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assert.ok(ret.error, 'maxBuffer should error');
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assert.strictEqual(ret.error.errno, 'ENOBUFS');
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}
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// Default maxBuffer size is 1024 * 1024.
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{
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const args = ['-e', "console.log('a'.repeat(1024 * 1024 - 1))"];
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const ret = spawnSync(process.execPath, args);
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assert.ifError(ret.error);
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assert.deepStrictEqual(
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ret.stdout.toString().trim(),
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'a'.repeat(1024 * 1024 - 1)
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);
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}
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