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assert: align argument names
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This makes sure the documented argument names and the ones thrown
in errors is aligned with the actual argument name.

PR-URL: #22760
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Denys Otrishko <shishugi@gmail.com>
Reviewed-By: Yuta Hiroto <hello@hiroppy.me>
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@BridgeAR @targos
BridgeAR authored and targos committed Sep 20, 2018
1 parent b1d667b commit 0015430
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Showing 6 changed files with 72 additions and 80 deletions.
41 changes: 21 additions & 20 deletions lib/assert.js
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Original file line number Diff line number Diff line change
Expand Up @@ -557,12 +557,12 @@ function expectedException(actual, expected, msg) {
return expected.call({}, actual) === true;
}

function getActual(block) {
if (typeof block !== 'function') {
throw new ERR_INVALID_ARG_TYPE('block', 'Function', block);
function getActual(fn) {
if (typeof fn !== 'function') {
throw new ERR_INVALID_ARG_TYPE('fn', 'Function', fn);
}
try {
block();
fn();
} catch (e) {
return e;
}
Expand All @@ -579,20 +579,21 @@ function checkIsPromise(obj) {
typeof obj.catch === 'function';
}

async function waitForActual(block) {
async function waitForActual(promiseFn) {
let resultPromise;
if (typeof block === 'function') {
// Return a rejected promise if `block` throws synchronously.
resultPromise = block();
if (typeof promiseFn === 'function') {
// Return a rejected promise if `promiseFn` throws synchronously.
resultPromise = promiseFn();
// Fail in case no promise is returned.
if (!checkIsPromise(resultPromise)) {
throw new ERR_INVALID_RETURN_VALUE('instance of Promise',
'block', resultPromise);
'promiseFn', resultPromise);
}
} else if (checkIsPromise(block)) {
resultPromise = block;
} else if (checkIsPromise(promiseFn)) {
resultPromise = promiseFn;
} else {
throw new ERR_INVALID_ARG_TYPE('block', ['Function', 'Promise'], block);
throw new ERR_INVALID_ARG_TYPE(
'promiseFn', ['Function', 'Promise'], promiseFn);
}

try {
Expand Down Expand Up @@ -672,20 +673,20 @@ function expectsNoError(stackStartFn, actual, error, message) {
throw actual;
}

assert.throws = function throws(block, ...args) {
expectsError(throws, getActual(block), ...args);
assert.throws = function throws(promiseFn, ...args) {
expectsError(throws, getActual(promiseFn), ...args);
};

assert.rejects = async function rejects(block, ...args) {
expectsError(rejects, await waitForActual(block), ...args);
assert.rejects = async function rejects(promiseFn, ...args) {
expectsError(rejects, await waitForActual(promiseFn), ...args);
};

assert.doesNotThrow = function doesNotThrow(block, ...args) {
expectsNoError(doesNotThrow, getActual(block), ...args);
assert.doesNotThrow = function doesNotThrow(fn, ...args) {
expectsNoError(doesNotThrow, getActual(fn), ...args);
};

assert.doesNotReject = async function doesNotReject(block, ...args) {
expectsNoError(doesNotReject, await waitForActual(block), ...args);
assert.doesNotReject = async function doesNotReject(fn, ...args) {
expectsNoError(doesNotReject, await waitForActual(fn), ...args);
};

assert.ifError = function ifError(err) {
Expand Down
8 changes: 4 additions & 4 deletions test/parallel/test-assert-async.js
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Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ const promises = [];
name: 'TypeError [ERR_INVALID_RETURN_VALUE]',
code: 'ERR_INVALID_RETURN_VALUE',
message: 'Expected instance of Promise to be returned ' +
'from the "block" function but got type undefined.'
'from the "promiseFn" function but got type undefined.'
}));

promise = assert.rejects(Promise.resolve(), common.mustNotCall());
Expand All @@ -62,7 +62,7 @@ promises.push(assert.rejects(
assert.rejects('fail', {}),
{
code: 'ERR_INVALID_ARG_TYPE',
message: 'The "block" argument must be one of type ' +
message: 'The "promiseFn" argument must be one of type ' +
'Function or Promise. Received type string'
}
));
Expand All @@ -73,7 +73,7 @@ promises.push(assert.rejects(
const promise = assert.doesNotReject(() => new Map(), common.mustNotCall());
promises.push(assert.rejects(promise, {
message: 'Expected instance of Promise to be returned ' +
'from the "block" function but got instance of Map.',
'from the "promiseFn" function but got instance of Map.',
code: 'ERR_INVALID_RETURN_VALUE',
name: 'TypeError [ERR_INVALID_RETURN_VALUE]'
}));
Expand Down Expand Up @@ -116,7 +116,7 @@ promises.push(assert.rejects(
assert.doesNotReject(123),
{
code: 'ERR_INVALID_ARG_TYPE',
message: 'The "block" argument must be one of type ' +
message: 'The "promiseFn" argument must be one of type ' +
'Function or Promise. Received type number'
}
));
Expand Down
10 changes: 5 additions & 5 deletions test/parallel/test-assert.js
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Original file line number Diff line number Diff line change
Expand Up @@ -341,15 +341,15 @@ try {
}

{
// Verify that throws() and doesNotThrow() throw on non-function block.
const testBlockTypeError = (method, block) => {
// Verify that throws() and doesNotThrow() throw on non-functions.
const testBlockTypeError = (method, fn) => {
common.expectsError(
() => method(block),
() => method(fn),
{
code: 'ERR_INVALID_ARG_TYPE',
type: TypeError,
message: 'The "block" argument must be of type Function. Received ' +
`type ${typeof block}`
message: 'The "fn" argument must be of type Function. Received ' +
`type ${typeof fn}`
}
);
};
Expand Down
4 changes: 2 additions & 2 deletions test/parallel/test-file-write-stream3.js
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Original file line number Diff line number Diff line change
Expand Up @@ -178,7 +178,7 @@ function run_test_3() {

const run_test_4 = common.mustCall(function() {
// Error: start must be >= zero
const block = () => {
const fn = () => {
fs.createWriteStream(filepath, { start: -5, flags: 'r+' });
};
const err = {
Expand All @@ -187,7 +187,7 @@ const run_test_4 = common.mustCall(function() {
'It must be >= 0. Received {start: -5}',
type: RangeError
};
common.expectsError(block, err);
common.expectsError(fn, err);
});

run_test_1();
85 changes: 38 additions & 47 deletions test/parallel/test-net-connect-options-port.js
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Original file line number Diff line number Diff line change
Expand Up @@ -62,8 +62,8 @@ const net = require('net');
const hints = (dns.ADDRCONFIG | dns.V4MAPPED) + 42;
const hintOptBlocks = doConnect([{ hints }],
() => common.mustNotCall());
for (const block of hintOptBlocks) {
common.expectsError(block, {
for (const fn of hintOptBlocks) {
common.expectsError(fn, {
code: 'ERR_INVALID_OPT_VALUE',
type: TypeError,
message: /The value "\d+" is invalid for option "hints"/
Expand Down Expand Up @@ -136,67 +136,59 @@ function doConnect(args, getCb) {
function syncFailToConnect(port, assertErr, optOnly) {
if (!optOnly) {
// connect(port, cb) and connect(port)
const portArgBlocks = doConnect([port], () => common.mustNotCall());
for (const block of portArgBlocks) {
assert.throws(block,
assertErr,
`${block.name}(${port})`);
const portArgFunctions = doConnect([port], () => common.mustNotCall());
for (const fn of portArgFunctions) {
assert.throws(fn, assertErr, `${fn.name}(${port})`);
}

// connect(port, host, cb) and connect(port, host)
const portHostArgBlocks = doConnect([port, 'localhost'],
() => common.mustNotCall());
for (const block of portHostArgBlocks) {
assert.throws(block,
assertErr,
`${block.name}(${port}, 'localhost')`);
const portHostArgFunctions = doConnect([port, 'localhost'],
() => common.mustNotCall());
for (const fn of portHostArgFunctions) {
assert.throws(fn, assertErr, `${fn.name}(${port}, 'localhost')`);
}
}
// connect({port}, cb) and connect({port})
const portOptBlocks = doConnect([{ port }],
() => common.mustNotCall());
for (const block of portOptBlocks) {
assert.throws(block,
assertErr,
`${block.name}({port: ${port}})`);
const portOptFunctions = doConnect([{ port }], () => common.mustNotCall());
for (const fn of portOptFunctions) {
assert.throws(fn, assertErr, `${fn.name}({port: ${port}})`);
}

// connect({port, host}, cb) and connect({port, host})
const portHostOptBlocks = doConnect([{ port: port, host: 'localhost' }],
() => common.mustNotCall());
for (const block of portHostOptBlocks) {
assert.throws(block,
const portHostOptFunctions = doConnect([{ port: port, host: 'localhost' }],
() => common.mustNotCall());
for (const fn of portHostOptFunctions) {
assert.throws(fn,
assertErr,
`${block.name}({port: ${port}, host: 'localhost'})`);
`${fn.name}({port: ${port}, host: 'localhost'})`);
}
}

function canConnect(port) {
const noop = () => common.mustCall();

// connect(port, cb) and connect(port)
const portArgBlocks = doConnect([port], noop);
for (const block of portArgBlocks) {
block();
const portArgFunctions = doConnect([port], noop);
for (const fn of portArgFunctions) {
fn();
}

// connect(port, host, cb) and connect(port, host)
const portHostArgBlocks = doConnect([port, 'localhost'], noop);
for (const block of portHostArgBlocks) {
block();
const portHostArgFunctions = doConnect([port, 'localhost'], noop);
for (const fn of portHostArgFunctions) {
fn();
}

// connect({port}, cb) and connect({port})
const portOptBlocks = doConnect([{ port }], noop);
for (const block of portOptBlocks) {
block();
const portOptFunctions = doConnect([{ port }], noop);
for (const fn of portOptFunctions) {
fn();
}

// connect({port, host}, cb) and connect({port, host})
const portHostOptBlocks = doConnect([{ port: port, host: 'localhost' }],
noop);
for (const block of portHostOptBlocks) {
block();
const portHostOptFns = doConnect([{ port, host: 'localhost' }], noop);
for (const fn of portHostOptFns) {
fn();
}
}

Expand All @@ -208,21 +200,20 @@ function asyncFailToConnect(port) {

const dont = () => common.mustNotCall();
// connect(port, cb) and connect(port)
const portArgBlocks = doConnect([port], dont);
for (const block of portArgBlocks) {
block().on('error', onError());
const portArgFunctions = doConnect([port], dont);
for (const fn of portArgFunctions) {
fn().on('error', onError());
}

// connect({port}, cb) and connect({port})
const portOptBlocks = doConnect([{ port }], dont);
for (const block of portOptBlocks) {
block().on('error', onError());
const portOptFunctions = doConnect([{ port }], dont);
for (const fn of portOptFunctions) {
fn().on('error', onError());
}

// connect({port, host}, cb) and connect({port, host})
const portHostOptBlocks = doConnect([{ port: port, host: 'localhost' }],
dont);
for (const block of portHostOptBlocks) {
block().on('error', onError());
const portHostOptFns = doConnect([{ port, host: 'localhost' }], dont);
for (const fn of portHostOptFns) {
fn().on('error', onError());
}
}
4 changes: 2 additions & 2 deletions test/parallel/test-net-server-listen-options.js
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Original file line number Diff line number Diff line change
Expand Up @@ -54,10 +54,10 @@ const listenOnPort = [

{
function shouldFailToListen(options) {
const block = () => {
const fn = () => {
net.createServer().listen(options, common.mustNotCall());
};
common.expectsError(block,
common.expectsError(fn,
{
code: 'ERR_INVALID_OPT_VALUE',
type: TypeError,
Expand Down

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