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import * as common from '../common/index.mjs';
import * as fixtures from '../common/fixtures.mjs';
import fs from 'fs';
import assert from 'assert';
// This test ensures that "position" argument is correctly validated
const filepath = fixtures.path('x.txt');
const buffer = Buffer.from('xyz\n');
const offset = 0;
const length = buffer.byteLength;
// allowedErrors is an array of acceptable internal errors
// For example, on some platforms read syscall might return -EFBIG or -EOVERFLOW
function testValid(position, allowedErrors = []) {
let fdSync;
try {
fdSync = fs.openSync(filepath, 'r');
fs.readSync(fdSync, buffer, offset, length, position);
fs.readSync(fdSync, buffer, common.mustNotMutateObjectDeep({ offset, length, position }));
} catch (err) {
if (!allowedErrors.includes(err.code)) {
assert.fail(err);
}
} finally {
if (fdSync) fs.closeSync(fdSync);
}
}
function testInvalid(code, position, internalCatch = false) {
let fdSync;
try {
fdSync = fs.openSync(filepath, 'r');
assert.throws(
() => fs.readSync(fdSync, buffer, offset, length, position),
{ code }
);
assert.throws(
() => fs.readSync(fdSync, buffer, common.mustNotMutateObjectDeep({ offset, length, position })),
{ code }
);
} finally {
if (fdSync) fs.closeSync(fdSync);
}
}
{
testValid(undefined);
testValid(null);
testValid(-1);
testValid(-1n);
testValid(0);
testValid(0n);
testValid(1);
testValid(1n);
testValid(9);
testValid(9n);
testValid(Number.MAX_SAFE_INTEGER, [ 'EFBIG', 'EOVERFLOW' ]);
testValid(2n ** 63n - 1n - BigInt(length), [ 'EFBIG', 'EOVERFLOW' ]);
testInvalid('ERR_OUT_OF_RANGE', 2n ** 63n);
// TODO(LiviaMedeiros): test `2n ** 63n - BigInt(length)`
testInvalid('ERR_OUT_OF_RANGE', NaN);
testInvalid('ERR_OUT_OF_RANGE', -Infinity);
testInvalid('ERR_OUT_OF_RANGE', Infinity);
testInvalid('ERR_OUT_OF_RANGE', -0.999);
testInvalid('ERR_OUT_OF_RANGE', -(2n ** 64n));
testInvalid('ERR_OUT_OF_RANGE', Number.MAX_SAFE_INTEGER + 1);
testInvalid('ERR_OUT_OF_RANGE', Number.MAX_VALUE);
for (const badTypeValue of [
false, true, '1', Symbol(1), {}, [], () => {}, Promise.resolve(1),
]) {
testInvalid('ERR_INVALID_ARG_TYPE', badTypeValue);
}
}
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