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test: reduce flakiness of test-fs-read-position-validation.mjs
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PR-URL: #42999
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
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@LiviaMedeiros
LiviaMedeiros authored May 15, 2022
1 parent 1fa5733 commit e330b45
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Showing 2 changed files with 107 additions and 66 deletions.
93 changes: 27 additions & 66 deletions test/parallel/test-fs-read-position-validation.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -14,73 +14,27 @@ const length = buffer.byteLength;
// allowedErrors is an array of acceptable internal errors
// For example, on some platforms read syscall might return -EFBIG
async function testValid(position, allowedErrors = []) {
let fdSync;
try {
fdSync = fs.openSync(filepath, 'r');
fs.readSync(fdSync, buffer, offset, length, position);
fs.readSync(fdSync, buffer, { offset, length, position });
} catch (err) {
if (!allowedErrors.includes(err.code)) {
assert.fail(err);
}
} finally {
if (fdSync) fs.closeSync(fdSync);
}

fs.open(filepath, 'r', common.mustSucceed((fd) => {
try {
if (allowedErrors.length) {
fs.read(fd, buffer, offset, length, position, common.mustCall((err, ...results) => {
if (err && !allowedErrors.includes(err.code)) {
assert.fail(err);
}
}));
fs.read(fd, { buffer, offset, length, position }, common.mustCall((err, ...results) => {
if (err && !allowedErrors.includes(err.code)) {
assert.fail(err);
}
}));
} else {
fs.read(fd, buffer, offset, length, position, common.mustSucceed());
fs.read(fd, { buffer, offset, length, position }, common.mustSucceed());
}
} finally {
fs.close(fd, common.mustSucceed());
}
}));
}

async 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, { offset, length, position }),
{ code }
);
} finally {
if (fdSync) fs.closeSync(fdSync);
}

// Set this flag for catching errors via first argument of callback function
if (internalCatch) {
return new Promise((resolve, reject) => {
fs.open(filepath, 'r', common.mustSucceed((fd) => {
try {
fs.read(fd, buffer, offset, length, position, (err, ...results) => {
assert.strictEqual(err.code, code);
});
fs.read(fd, { buffer, offset, length, position }, (err, ...results) => {
assert.strictEqual(err.code, code);
});
} finally {
fs.close(fd, common.mustSucceed());
}
let callCount = 3;
const handler = common.mustCall((err) => {
callCount--;
if (err && !allowedErrors.includes(err.code)) {
fs.close(fd, common.mustSucceed());
reject(err);
} else if (callCount === 0) {
fs.close(fd, common.mustSucceed(resolve));
}
}, callCount);
fs.read(fd, buffer, offset, length, position, handler);
fs.read(fd, { buffer, offset, length, position }, handler);
fs.read(fd, buffer, { offset, length, position }, handler);
}));
} else {
});
}

async function testInvalid(code, position) {
return new Promise((resolve, reject) => {
fs.open(filepath, 'r', common.mustSucceed((fd) => {
try {
assert.throws(
Expand All @@ -91,11 +45,18 @@ async function testInvalid(code, position, internalCatch = false) {
() => fs.read(fd, { buffer, offset, length, position }, common.mustNotCall()),
{ code }
);
assert.throws(
() => fs.read(fd, buffer, { offset, length, position }, common.mustNotCall()),
{ code }
);
resolve();
} catch (err) {
reject(err);
} finally {
fs.close(fd, common.mustSucceed());
}
}));
}
});
}

{
Expand Down
80 changes: 80 additions & 0 deletions test/parallel/test-fs-readSync-position-validation.mjs
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Original file line number Diff line number Diff line change
@@ -0,0 +1,80 @@
import '../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
function testValid(position, allowedErrors = []) {
let fdSync;
try {
fdSync = fs.openSync(filepath, 'r');
fs.readSync(fdSync, buffer, offset, length, position);
fs.readSync(fdSync, buffer, { 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, { 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' ]);

testValid(2n ** 63n - 1n - BigInt(length), [ 'EFBIG' ]);
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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