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'use strict';
// Flags: --expose-internals
const common = require('../../common');
const { internalBinding } = require('internal/test/binding');
const skipMessage = 'intensive toString tests due to memory confinements';
if (!common.enoughTestMem)
common.skip(skipMessage);
const binding = require(`./build/${common.buildType}/binding`);
const assert = require('assert');
// v8 fails silently if string length > v8::String::kMaxLength
// v8::String::kMaxLength defined in v8.h
const kStringMaxLength = internalBinding('buffer').kStringMaxLength;
let buf;
try {
buf = Buffer.allocUnsafe(kStringMaxLength + 1);
} catch (e) {
// If the exception is not due to memory confinement then rethrow it.
if (e.message !== 'Array buffer allocation failed') throw (e);
common.skip(skipMessage);
}
// Ensure we have enough memory available for future allocations to succeed.
if (!binding.ensureAllocation(2 * kStringMaxLength))
common.skip(skipMessage);
const stringLengthHex = kStringMaxLength.toString(16);
assert.throws(function() {
buf.toString();
}, function(e) {
if (e.message !== 'Array buffer allocation failed') {
common.expectsError({
message: `Cannot create a string longer than 0x${stringLengthHex} ` +
'characters',
code: 'ERR_STRING_TOO_LONG',
type: Error
})(e);
return true;
} else {
return true;
}
});
common.expectsError(function() {
buf.toString('utf8');
}, {
message: `Cannot create a string longer than 0x${stringLengthHex} ` +
'characters',
code: 'ERR_STRING_TOO_LONG',
type: Error
});
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