71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
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'use strict';
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const common = require('../common');
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if (!common.enoughTestMem)
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common.skip('intensive toString tests due to memory confinements');
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const assert = require('assert');
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const fs = require('fs');
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const path = require('path');
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const cp = require('child_process');
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const kStringMaxLength = require('buffer').constants.MAX_STRING_LENGTH;
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if (common.isAIX && (Number(cp.execSync('ulimit -f')) * 512) < kStringMaxLength)
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common.skip('intensive toString tests due to file size confinements');
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const tmpdir = require('../common/tmpdir');
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tmpdir.refresh();
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const file = path.join(tmpdir.path, 'toobig.txt');
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const stream = fs.createWriteStream(file, {
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flags: 'a'
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});
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stream.on('error', (err) => { throw err; });
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const size = kStringMaxLength / 200;
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const a = Buffer.alloc(size, 'a');
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for (let i = 0; i < 201; i++) {
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stream.write(a);
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}
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stream.end();
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stream.on('finish', common.mustCall(function() {
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fs.readFile(file, 'utf8', common.mustCall(function(err, buf) {
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assert.ok(err instanceof Error);
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if (err.message !== 'Array buffer allocation failed') {
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const stringLengthHex = kStringMaxLength.toString(16);
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common.expectsError({
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message: 'Cannot create a string longer than ' +
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`0x${stringLengthHex} characters`,
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code: 'ERR_STRING_TOO_LONG',
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name: 'Error'
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})(err);
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}
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assert.strictEqual(buf, undefined);
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}));
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}));
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function destroy() {
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try {
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fs.unlinkSync(file);
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} catch {
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// it may not exist
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}
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}
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process.on('exit', destroy);
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process.on('SIGINT', function() {
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destroy();
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process.exit();
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});
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// To make sure we don't leave a very large file
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// on test machines in the event this test fails.
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process.on('uncaughtException', function(err) {
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destroy();
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throw err;
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});
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