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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const { invalidArgTypeHelper, mustCall } = require('../common');
const assert = require('assert');
const { inspect } = require('util');
const { test } = require('node:test');
const vm = require('vm');
// Disable colored output to prevent color codes from breaking assertion
// message comparisons. This should only be an issue when process.stdout
// is a TTY.
if (process.stdout.isTTY) {
process.env.NODE_DISABLE_COLORS = '1';
}
const strictEqualMessageStart = 'Expected values to be strictly equal:\n';
const start = 'Expected values to be strictly deep-equal:';
const actExp = '+ actual - expected';
/* eslint-disable no-restricted-syntax */
/* eslint-disable no-restricted-properties */
test('some basics', () => {
assert.ok(assert.AssertionError.prototype instanceof Error,
'assert.AssertionError instanceof Error');
assert.throws(() => assert(false), assert.AssertionError, 'ok(false)');
assert.throws(() => assert.ok(false), assert.AssertionError, 'ok(false)');
assert(true);
assert('test', 'ok(\'test\')');
assert.ok(true);
assert.ok('test');
assert.throws(() => assert.equal(true, false),
assert.AssertionError, 'equal(true, false)');
assert.equal(null, null);
assert.equal(undefined, undefined);
assert.equal(null, undefined);
assert.equal(true, true);
assert.equal(2, '2');
assert.notEqual(true, false);
assert.notStrictEqual(2, '2');
});
test('Throw message if the message is instanceof Error', () => {
let threw = false;
try {
assert.ok(false, new Error('ok(false)'));
} catch (e) {
threw = true;
assert.ok(e instanceof Error);
}
assert.ok(threw, 'Error: ok(false)');
});
test('Errors created in different contexts are handled as any other custom error', () => {
const context = vm.createContext();
const error = vm.runInContext('new SyntaxError("custom error")', context);
assert.throws(() => assert(false, error), {
message: 'custom error',
name: 'SyntaxError'
});
});
test('assert.throws()', () => {
assert.throws(() => assert.notEqual(true, true),
assert.AssertionError, 'notEqual(true, true)');
assert.throws(() => assert.strictEqual(2, '2'),
assert.AssertionError, 'strictEqual(2, \'2\')');
assert.throws(() => assert.strictEqual(null, undefined),
assert.AssertionError, 'strictEqual(null, undefined)');
assert.throws(
() => assert.notStrictEqual(2, 2),
{
message: 'Expected "actual" to be strictly unequal to: 2',
name: 'AssertionError'
}
);
assert.throws(
() => assert.notStrictEqual('a '.repeat(30), 'a '.repeat(30)),
{
message: 'Expected "actual" to be strictly unequal to:\n\n' +
`'${'a '.repeat(30)}'`,
name: 'AssertionError'
}
);
assert.throws(
() => assert.notEqual(1, 1),
{
message: '1 != 1',
operator: '!='
}
);
// Testing the throwing.
function thrower(errorConstructor) {
throw new errorConstructor({});
}
// The basic calls work.
assert.throws(() => thrower(assert.AssertionError), assert.AssertionError, 'message');
assert.throws(() => thrower(assert.AssertionError), assert.AssertionError);
assert.throws(() => thrower(assert.AssertionError));
// If not passing an error, catch all.
assert.throws(() => thrower(TypeError));
// When passing a type, only catch errors of the appropriate type.
assert.throws(
() => assert.throws(() => thrower(TypeError), assert.AssertionError),
{
generatedMessage: true,
actual: new TypeError({}),
expected: assert.AssertionError,
code: 'ERR_ASSERTION',
name: 'AssertionError',
operator: 'throws',
message: 'The error is expected to be an instance of "AssertionError". ' +
'Received "TypeError"\n\nError message:\n\n[object Object]'
}
);
// doesNotThrow should pass through all errors.
{
let threw = false;
try {
assert.doesNotThrow(() => thrower(TypeError), assert.AssertionError);
} catch (e) {
threw = true;
assert.ok(e instanceof TypeError);
}
assert(threw, 'assert.doesNotThrow with an explicit error is eating extra errors');
}
// Key difference is that throwing our correct error makes an assertion error.
{
let threw = false;
try {
assert.doesNotThrow(() => thrower(TypeError), TypeError);
} catch (e) {
threw = true;
assert.ok(e instanceof assert.AssertionError);
assert.ok(!e.stack.includes('at Function.doesNotThrow'));
}
assert.ok(threw, 'assert.doesNotThrow is not catching type matching errors');
}
assert.throws(
() => assert.doesNotThrow(() => thrower(Error), 'user message'),
{
name: 'AssertionError',
code: 'ERR_ASSERTION',
operator: 'doesNotThrow',
message: 'Got unwanted exception: user message\n' +
'Actual message: "[object Object]"'
}
);
assert.throws(
() => assert.doesNotThrow(() => thrower(Error)),
{
code: 'ERR_ASSERTION',
message: 'Got unwanted exception.\nActual message: "[object Object]"'
}
);
assert.throws(
() => assert.doesNotThrow(() => thrower(Error), /\[[a-z]{6}\s[A-z]{6}\]/g, 'user message'),
{
name: 'AssertionError',
code: 'ERR_ASSERTION',
operator: 'doesNotThrow',
message: 'Got unwanted exception: user message\n' +
'Actual message: "[object Object]"'
}
);
// Make sure that validating using constructor really works.
{
let threw = false;
try {
assert.throws(
() => {
throw ({}); // eslint-disable-line no-throw-literal
},
Array
);
} catch {
threw = true;
}
assert.ok(threw, 'wrong constructor validation');
}
// Use a RegExp to validate the error message.
{
assert.throws(() => thrower(TypeError), /\[object Object\]/);
const symbol = Symbol('foo');
assert.throws(() => {
throw symbol;
}, /foo/);
assert.throws(() => {
assert.throws(() => {
throw symbol;
}, /abc/);
}, {
message: 'The input did not match the regular expression /abc/. ' +
"Input:\n\n'Symbol(foo)'\n",
code: 'ERR_ASSERTION',
operator: 'throws',
actual: symbol,
expected: /abc/
});
}
// Use a fn to validate the error object.
assert.throws(() => thrower(TypeError), (err) => {
if ((err instanceof TypeError) && /\[object Object\]/.test(err)) {
return true;
}
});
// https://github.com/nodejs/node/issues/3188
{
let actual;
assert.throws(
() => {
const ES6Error = class extends Error {};
const AnotherErrorType = class extends Error {};
assert.throws(() => {
actual = new AnotherErrorType('foo');
throw actual;
}, ES6Error);
},
(err) => {
assert.strictEqual(
err.message,
'The error is expected to be an instance of "ES6Error". ' +
'Received "AnotherErrorType"\n\nError message:\n\nfoo'
);
assert.strictEqual(err.actual, actual);
return true;
}
);
}
assert.throws(
() => assert.strictEqual(new Error('foo'), new Error('foobar')),
{
code: 'ERR_ASSERTION',
name: 'AssertionError',
message: 'Expected "actual" to be reference-equal to "expected":\n' +
'+ actual - expected\n' +
'\n' +
'+ [Error: foo]\n' +
'- [Error: foobar]\n'
}
);
});
test('Check messages from assert.throws()', () => {
const noop = () => {};
assert.throws(
() => { assert.throws((noop)); },
{
code: 'ERR_ASSERTION',
message: 'Missing expected exception.',
operator: 'throws',
actual: undefined,
expected: undefined
});
assert.throws(
() => { assert.throws(noop, TypeError); },
{
code: 'ERR_ASSERTION',
message: 'Missing expected exception (TypeError).',
actual: undefined,
expected: TypeError
});
assert.throws(
() => { assert.throws(noop, 'fhqwhgads'); },
{
code: 'ERR_ASSERTION',
message: 'Missing expected exception: fhqwhgads',
actual: undefined,
expected: undefined
});
assert.throws(
() => { assert.throws(noop, TypeError, 'fhqwhgads'); },
{
code: 'ERR_ASSERTION',
message: 'Missing expected exception (TypeError): fhqwhgads',
actual: undefined,
expected: TypeError
});
let threw = false;
try {
assert.throws(noop);
} catch (e) {
threw = true;
assert.ok(e instanceof assert.AssertionError);
assert.ok(!e.stack.includes('at Function.throws'));
}
assert.ok(threw);
});
test('Test assertion messages', () => {
const circular = { y: 1 };
circular.x = circular;
function testAssertionMessage(actual, expected, msg) {
assert.throws(
() => assert.strictEqual(actual, ''),
{
generatedMessage: true,
message: msg || `Expected values to be strictly equal:\n\n${expected} !== ''\n`
}
);
}
function testLongAssertionMessage(actual, expected) {
testAssertionMessage(actual, expected, 'Expected values to be strictly equal:\n' +
'+ actual - expected\n' +
'\n' +
`+ ${expected}\n` +
"- ''\n");
}
function testShortAssertionMessage(actual, expected) {
testAssertionMessage(actual, expected, strictEqualMessageStart + `\n${inspect(actual)} !== ''\n`);
}
testShortAssertionMessage(null, 'null');
testShortAssertionMessage(true, 'true');
testShortAssertionMessage(false, 'false');
testShortAssertionMessage(100, '100');
testShortAssertionMessage(NaN, 'NaN');
testShortAssertionMessage(Infinity, 'Infinity');
testShortAssertionMessage('a', '\'a\'');
testShortAssertionMessage('foo', '\'foo\'');
testShortAssertionMessage(0, '0');
testShortAssertionMessage(Symbol(), 'Symbol()');
testShortAssertionMessage(undefined, 'undefined');
testShortAssertionMessage(-Infinity, '-Infinity');
testShortAssertionMessage([], '[]');
testShortAssertionMessage({}, '{}');
testAssertionMessage(/a/, '/a/');
testAssertionMessage(/abc/gim, '/abc/gim');
testLongAssertionMessage(function f() {}, '[Function: f]');
testLongAssertionMessage(function() {}, '[Function (anonymous)]');
assert.throws(
() => assert.strictEqual([1, 2, 3], ''),
{
message: 'Expected values to be strictly equal:\n' +
'+ actual - expected\n' +
'\n' +
'+ [\n' +
'+ 1,\n' +
'+ 2,\n' +
'+ 3\n' +
'+ ]\n' +
"- ''\n",
generatedMessage: true
}
);
assert.throws(
() => assert.strictEqual(circular, ''),
{
message: 'Expected values to be strictly equal:\n' +
'+ actual - expected\n' +
'\n' +
'+ <ref *1> {\n' +
'+ x: [Circular *1],\n' +
'+ y: 1\n' +
'+ }\n' +
"- ''\n",
generatedMessage: true
}
);
assert.throws(
() => assert.strictEqual({ a: undefined, b: null }, ''),
{
message: 'Expected values to be strictly equal:\n' +
'+ actual - expected\n' +
'\n' +
'+ {\n' +
'+ a: undefined,\n' +
'+ b: null\n' +
'+ }\n' +
"- ''\n",
generatedMessage: true
}
);
assert.throws(
() => assert.strictEqual({ a: NaN, b: Infinity, c: -Infinity }, ''),
{
message: 'Expected values to be strictly equal:\n' +
'+ actual - expected\n' +
'\n' +
'+ {\n' +
'+ a: NaN,\n' +
'+ b: Infinity,\n' +
'+ c: -Infinity\n' +
'+ }\n' +
"- ''\n",
generatedMessage: true
}
);
// https://github.com/nodejs/node-v0.x-archive/issues/5292
assert.throws(
() => assert.strictEqual(1, 2),
{
message: 'Expected values to be strictly equal:\n\n1 !== 2\n',
generatedMessage: true
}
);
assert.throws(
() => assert.strictEqual(1, 2, 'oh no'),
{
message: 'oh no\n\n1 !== 2\n',
generatedMessage: false
}
);
});
test('Custom errors', () => {
let threw = false;
const rangeError = new RangeError('my range');
// Verify custom errors.
try {
assert.strictEqual(1, 2, rangeError);
} catch (e) {
assert.strictEqual(e, rangeError);
threw = true;
assert.ok(e instanceof RangeError, 'Incorrect error type thrown');
}
assert.ok(threw);
threw = false;
// Verify AssertionError is the result from doesNotThrow with custom Error.
try {
assert.doesNotThrow(() => {
throw new TypeError('wrong type');
}, TypeError, rangeError);
} catch (e) {
threw = true;
assert.ok(e.message.includes(rangeError.message));
assert.ok(e instanceof assert.AssertionError);
assert.ok(!e.stack.includes('doesNotThrow'), e);
}
assert.ok(threw);
});
test('Verify that throws() and doesNotThrow() throw on non-functions', () => {
[
[assert.throws, 'string'],
[assert.doesNotThrow, 'string'],
[assert.throws, 1],
[assert.doesNotThrow, 1],
[assert.throws, true],
[assert.doesNotThrow, true],
[assert.throws, false],
[assert.doesNotThrow, false],
[assert.throws, []],
[assert.doesNotThrow, []],
[assert.throws, {}],
[assert.doesNotThrow, {}],
[assert.throws, /foo/],
[assert.doesNotThrow, /foo/],
[assert.throws, null],
[assert.doesNotThrow, null],
[assert.throws, undefined],
[assert.doesNotThrow, undefined],
].forEach(([method, fn]) => {
assert.throws(
() => method(fn),
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
message: 'The "fn" argument must be of type function.' +
invalidArgTypeHelper(fn)
}
);
});
});
test('https://github.com/nodejs/node/issues/3275', () => {
// eslint-disable-next-line no-throw-literal
assert.throws(() => { throw 'error'; }, (err) => err === 'error');
assert.throws(() => { throw new Error(); }, (err) => err instanceof Error);
});
test('Long values should be truncated for display', () => {
assert.throws(() => {
assert.strictEqual('A'.repeat(1000), '');
}, (err) => {
assert.strictEqual(err.code, 'ERR_ASSERTION');
assert.strictEqual(err.message,
`${strictEqualMessageStart}+ actual - expected\n\n` +
`+ '${'A'.repeat(1000)}'\n- ''\n`);
assert.strictEqual(err.actual.length, 1000);
assert.ok(inspect(err).includes(`actual: '${'A'.repeat(488)}...'`));
return true;
});
});
test('Output that extends beyond 10 lines should also be truncated for display', () => {
const multilineString = 'fhqwhgads\n'.repeat(15);
assert.throws(() => {
assert.strictEqual(multilineString, '');
}, (err) => {
assert.strictEqual(err.code, 'ERR_ASSERTION');
assert.strictEqual(err.message.split('\n').length, 20);
assert.strictEqual(err.actual.split('\n').length, 16);
assert.ok(inspect(err).includes(
"actual: 'fhqwhgads\\n' +\n" +
" 'fhqwhgads\\n' +\n".repeat(9) +
" '...'"));
return true;
});
});
test('Bad args to AssertionError constructor should throw TypeError.', () => {
const args = [1, true, false, '', null, Infinity, Symbol('test'), undefined];
for (const input of args) {
assert.throws(
() => new assert.AssertionError(input),
{
code: 'ERR_INVALID_ARG_TYPE',
name: 'TypeError',
message: 'The "options" argument must be of type object.' +
invalidArgTypeHelper(input)
});
}
});
test('NaN is handled correctly', () => {
assert.equal(NaN, NaN);
assert.throws(
() => assert.notEqual(NaN, NaN),
assert.AssertionError
);
});
test('Test strict assert', () => {
// eslint-disable-next-line node-core/must-call-assert
const { strict } = require('assert');
strict.throws(() => strict.equal(1, true), strict.AssertionError);
strict.notEqual(0, false);
strict.throws(() => strict.deepEqual(1, true), strict.AssertionError);
strict.notDeepEqual(0, false);
strict.equal(strict.strict, strict.strict.strict);
strict.equal(strict.equal, strict.strictEqual);
strict.equal(strict.deepEqual, strict.deepStrictEqual);
strict.equal(strict.notEqual, strict.notStrictEqual);
strict.equal(strict.notDeepEqual, strict.notDeepStrictEqual);
strict.equal(Object.keys(strict).length, Object.keys(assert).length);
strict(7);
strict.throws(
() => strict(...[]),
{
message: 'No value argument passed to `assert.ok()`',
name: 'AssertionError',
generatedMessage: true
}
);
strict.throws(
mustCall(() => assert()),
{
message: 'No value argument passed to `assert.ok()`',
name: 'AssertionError'
}
);
// Test setting the limit to zero and that assert.strict works properly.
const tmpLimit = Error.stackTraceLimit;
Error.stackTraceLimit = 0;
strict.throws(
() => {
strict.ok(
typeof 123 === 'string'
);
},
{
code: 'ERR_ASSERTION',
constructor: strict.AssertionError,
message: 'The expression evaluated to a falsy value:\n\n ' +
'strict.ok(\n'
}
);
Error.stackTraceLimit = tmpLimit;
// Test error diffs.
let message = 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n' +
'\n' +
' [\n' +
' [\n' +
' [\n' +
' 1,\n' +
' 2,\n' +
'+ 3\n' +
"- '3'\n" +
' ]\n' +
' ],\n' +
' 4,\n' +
' 5\n' +
' ]\n';
strict.throws(
() => strict.deepEqual([[[1, 2, 3]], 4, 5], [[[1, 2, '3']], 4, 5]),
{ message });
message = 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n' +
'... Skipped lines\n' +
'\n' +
' [\n' +
' 1,\n' +
' 1,\n' +
' 1,\n' +
' 0,\n' +
'...\n' +
' 1,\n' +
'+ 1\n' +
' ]\n';
strict.throws(
() => strict.deepEqual(
[1, 1, 1, 0, 1, 1, 1, 1],
[1, 1, 1, 0, 1, 1, 1]),
{ message });
message = 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n' +
'\n' +
' [\n' +
' 1,\n' +
' 2,\n' +
' 3,\n' +
' 4,\n' +
' 5,\n' +
'+ 6,\n' +
'- 9,\n' +
' 7\n' +
' ]\n';
assert.throws(
() => assert.deepStrictEqual([1, 2, 3, 4, 5, 6, 7], [1, 2, 3, 4, 5, 9, 7]),
{ message }
);
message = 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n' +
'\n' +
' [\n' +
' 1,\n' +
' 2,\n' +
' 3,\n' +
' 4,\n' +
' 5,\n' +
' 6,\n' +
'+ 7,\n' +
'- 9,\n' +
' 8\n' +
' ]\n';
assert.throws(
() => assert.deepStrictEqual([1, 2, 3, 4, 5, 6, 7, 8], [1, 2, 3, 4, 5, 6, 9, 8]),
{ message }
);
message = 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n' +
'... Skipped lines\n' +
'\n' +
' [\n' +
' 1,\n' +
' 2,\n' +
' 3,\n' +
' 4,\n' +
'...\n' +
' 7,\n' +
'+ 8,\n' +
'- 0,\n' +
' 9\n' +
' ]\n';
assert.throws(
() => assert.deepStrictEqual([1, 2, 3, 4, 5, 6, 7, 8, 9], [1, 2, 3, 4, 5, 6, 7, 0, 9]),
{ message }
);
message = 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n' +
'\n' +
' [\n' +
' 1,\n' +
'+ 2,\n' +
' 1,\n' +
' 1,\n' +
'- 1,\n' +
' 0,\n' +
' 1,\n' +
'+ 1\n' +
' ]\n';
strict.throws(
() => strict.deepEqual(
[1, 2, 1, 1, 0, 1, 1],
[1, 1, 1, 1, 0, 1]),
{ message });
message = [
start,
actExp,
'',
'+ [',
'+ 1,',
'+ 2,',
'+ 1',
'+ ]',
'- undefined\n',
].join('\n');
strict.throws(
() => strict.deepEqual([1, 2, 1], undefined),
{ message });
message = [
start,
actExp,
'',
' [',
'+ 1,',
' 2,',
' 1',
' ]\n',
].join('\n');
strict.throws(
() => strict.deepEqual([1, 2, 1], [2, 1]),
{ message });
message = 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n' +
'\n' +
' [\n' +
'+ 1,\n'.repeat(10) +
'+ 3\n' +
'- 2,\n'.repeat(11) +
'- 4,\n' +
'- 4,\n' +
'- 4\n' +
' ]\n';
strict.throws(
() => strict.deepEqual([1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 3], [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 4, 4, 4]),
{ message });
const obj1 = {};
const obj2 = { loop: 'forever' };
obj2[inspect.custom] = () => '{}';
// No infinite loop and no custom inspect.
strict.throws(() => strict.deepEqual(obj1, obj2), {
message: `${start}\n` +
`${actExp}\n` +
'\n' +
'+ {}\n' +
'- {\n' +
'- Symbol(nodejs.util.inspect.custom): [Function (anonymous)],\n' +
"- loop: 'forever'\n" +
'- }\n'
});
// notDeepEqual tests
strict.throws(
() => strict.notDeepEqual([1], [1]),
{
message: 'Expected "actual" not to be strictly deep-equal to:\n\n' +
'[\n 1\n]\n'
}
);
message = 'Expected "actual" not to be strictly deep-equal to:' +
`\n\n[${'\n 1,'.repeat(45)}\n...\n`;
const data = Array(51).fill(1);
strict.throws(
() => strict.notDeepEqual(data, data),
{ message });
});
test('Additional asserts', () => {
assert.throws(
() => assert.ok(null),
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
generatedMessage: true,
message: 'The expression evaluated to a falsy value:\n\n ' +
'assert.ok(null)\n'
}
);
assert.throws(
() => {
// This test case checks if `try` left brace without a line break
// before the assertion causes any wrong assertion message.
// Therefore, don't reformat the following code.
// Refs: https://github.com/nodejs/node/issues/30872
try { assert.ok(0); // eslint-disable-line no-useless-catch, @stylistic/js/brace-style
} catch (err) {
throw err;
}
},
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
generatedMessage: true,
message: 'The expression evaluated to a falsy value:\n\n ' +
'assert.ok(0)\n'
}
);
assert.throws(
() => {
try {
throw new Error();
// This test case checks if `catch` left brace without a line break
// before the assertion causes any wrong assertion message.
// Therefore, don't reformat the following code.
// Refs: https://github.com/nodejs/node/issues/30872
} catch (err) { assert.ok(0); } // eslint-disable-line no-unused-vars
},
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
generatedMessage: true,
message: 'The expression evaluated to a falsy value:\n\n ' +
'assert.ok(0)\n'
}
);
assert.throws(
() => {
// This test case checks if `function` left brace without a line break
// before the assertion causes any wrong assertion message.
// Therefore, don't reformat the following code.
// Refs: https://github.com/nodejs/node/issues/30872
function test() { assert.ok(0); // eslint-disable-line @stylistic/js/brace-style
}
test();
},
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
generatedMessage: true,
message: 'The expression evaluated to a falsy value:\n\n ' +
'assert.ok(0)\n'
}
);
assert.throws(
() => assert(typeof 123n === 'string'),
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
generatedMessage: true,
message: 'The expression evaluated to a falsy value:\n\n ' +
"assert(typeof 123n === 'string')\n"
}
);
assert.throws(
() => assert(false, Symbol('foo')),
{
code: 'ERR_INVALID_ARG_TYPE',
constructor: TypeError,
message: /"message" argument.+Symbol\(foo\)/
}
);
assert.throws(
() => {
assert.strictEqual((() => 'string')(), 123 instanceof
Buffer);
},
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
message: 'Expected values to be strictly equal:\n\n\'string\' !== false\n'
}
);
assert.throws(
() => {
assert.strictEqual((() => 'string')(), 123 instanceof
Buffer);
},
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
message: 'Expected values to be strictly equal:\n\n\'string\' !== false\n'
}
);
/* eslint-disable @stylistic/js/indent */
assert.throws(() => {
assert.strictEqual((
() => 'string')(), 123 instanceof
Buffer);
}, {
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
message: 'Expected values to be strictly equal:\n\n\'string\' !== false\n'
}
);
/* eslint-enable @stylistic/js/indent */
assert.throws(
() => {
assert(true); assert(null, undefined);
},
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
message: 'The expression evaluated to a falsy value:\n\n ' +
'assert(null, undefined)\n'
}
);
assert.throws(
() => {
assert
.ok(null, undefined);
},
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
message: 'The expression evaluated to a falsy value:\n\n ' +
'ok(null, undefined)\n'
}
);
assert.throws(
// eslint-disable-next-line dot-notation, @stylistic/js/quotes
() => assert['ok']["apply"](null, [0]),
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
message: 'The expression evaluated to a falsy value:\n\n ' +
'assert[\'ok\']["apply"](null, [0])\n'
}
);
assert.throws(
() => {
const wrapper = (fn, value) => fn(value);
wrapper(assert, false);
},
{
code: 'ERR_ASSERTION',
constructor: assert.AssertionError,
message: 'The expression evaluated to a falsy value:\n\n fn(value)\n'
}
);
assert.throws(
() => assert.ok.call(null, 0),