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test-assert-deep.js
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892 lines (777 loc) · 22.7 KB
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'use strict';
require('../common');
const assert = require('assert');
const util = require('util');
const { AssertionError } = assert;
const defaultMsgStart = 'Expected inputs to be strictly deep-equal:\n';
const defaultMsgStartFull = `${defaultMsgStart}+ actual - expected`;
// Disable colored output to prevent color codes from breaking assertion
// message comparisons. This should only be an issue when process.stdout
// is a TTY.
if (process.stdout.isTTY)
process.env.NODE_DISABLE_COLORS = '1';
// Template tag function turning an error message into a RegExp
// for assert.throws()
function re(literals, ...values) {
let result = 'Expected inputs to be loosely deep-equal:\n\n';
for (const [i, value] of values.entries()) {
const str = util.inspect(value, {
compact: false,
depth: 1000,
customInspect: false,
maxArrayLength: Infinity,
breakLength: Infinity
});
// Need to escape special characters.
result += str;
result += literals[i + 1];
}
return {
code: 'ERR_ASSERTION',
message: result
};
}
// The following deepEqual tests might seem very weird.
// They just describe what it is now.
// That is why we discourage using deepEqual in our own tests.
// Turn off no-restricted-properties because we are testing deepEqual!
/* eslint-disable no-restricted-properties, prefer-common-expectserror */
const arr = new Uint8Array([120, 121, 122, 10]);
const buf = Buffer.from(arr);
// They have different [[Prototype]]
assert.throws(
() => assert.deepStrictEqual(arr, buf),
{
code: 'ERR_ASSERTION',
message: `${defaultMsgStartFull} ... Lines skipped\n\n` +
'+ Uint8Array [\n' +
'- Buffer [Uint8Array] [\n 120,\n...\n 10\n ]'
}
);
assert.deepEqual(arr, buf);
{
const buf2 = Buffer.from(arr);
buf2.prop = 1;
assert.throws(
() => assert.deepStrictEqual(buf2, buf),
{
code: 'ERR_ASSERTION',
message: `${defaultMsgStartFull}\n\n` +
' Buffer [Uint8Array] [\n 120,\n 121,\n 122,\n' +
'+ 10,\n+ prop: 1\n- 10\n ]'
}
);
assert.deepEqual(buf2, buf);
}
{
const arr2 = new Uint8Array([120, 121, 122, 10]);
arr2.prop = 5;
assert.throws(
() => assert.deepStrictEqual(arr, arr2),
{
code: 'ERR_ASSERTION',
message: `${defaultMsgStartFull}\n\n` +
' Uint8Array [\n 120,\n 121,\n 122,\n' +
'+ 10\n- 10,\n- prop: 5\n ]'
}
);
assert.deepEqual(arr, arr2);
}
const date = new Date('2016');
class MyDate extends Date {
constructor(...args) {
super(...args);
this[0] = '1';
}
}
const date2 = new MyDate('2016');
// deepEqual returns true as long as the time are the same,
// but deepStrictEqual checks own properties
assert.deepEqual(date, date2);
assert.deepEqual(date2, date);
assert.throws(
() => assert.deepStrictEqual(date, date2),
{
code: 'ERR_ASSERTION',
message: `${defaultMsgStartFull}\n\n` +
'+ 2016-01-01T00:00:00.000Z\n- 2016-01-01T00:00:00.000Z {\n' +
"- '0': '1'\n- }"
}
);
assert.throws(
() => assert.deepStrictEqual(date2, date),
{
code: 'ERR_ASSERTION',
message: `${defaultMsgStartFull}\n\n` +
'+ 2016-01-01T00:00:00.000Z {\n' +
"+ '0': '1'\n+ }\n- 2016-01-01T00:00:00.000Z"
}
);
class MyRegExp extends RegExp {
constructor(...args) {
super(...args);
this[0] = '1';
}
}
const re1 = new RegExp('test');
const re2 = new MyRegExp('test');
// deepEqual returns true as long as the regexp-specific properties
// are the same, but deepStrictEqual checks all properties
assert.deepEqual(re1, re2);
assert.throws(
() => assert.deepStrictEqual(re1, re2),
{
code: 'ERR_ASSERTION',
message: `${defaultMsgStartFull}\n\n` +
"+ /test/\n- /test/ {\n- '0': '1'\n- }"
}
);
// For these weird cases, deepEqual should pass (at least for now),
// but deepStrictEqual should throw.
{
const similar = new Set([
{ 0: '1' }, // Object
{ 0: 1 }, // Object
new String('1'), // Object
['1'], // Array
[1], // Array
date2, // Date with this[0] = '1'
re2, // RegExp with this[0] = '1'
new Int8Array([1]), // Int8Array
new Uint8Array([1]), // Uint8Array
new Int16Array([1]), // Int16Array
new Uint16Array([1]), // Uint16Array
new Int32Array([1]), // Int32Array
new Uint32Array([1]), // Uint32Array
Buffer.from([1]),
// Arguments {'0': '1'} is not here
// See https://github.com/nodejs/node-v0.x-archive/pull/7178
]);
for (const a of similar) {
for (const b of similar) {
if (a !== b) {
assert.deepEqual(a, b);
assert.throws(
() => assert.deepStrictEqual(a, b),
{ code: 'ERR_ASSERTION' }
);
}
}
}
}
function assertDeepAndStrictEqual(a, b) {
assert.deepEqual(a, b);
assert.deepStrictEqual(a, b);
assert.deepEqual(b, a);
assert.deepStrictEqual(b, a);
}
function assertNotDeepOrStrict(a, b, err) {
assert.throws(
() => assert.deepEqual(a, b),
err || re`${a}\n\nshould equal\n\n${b}`
);
assert.throws(
() => assert.deepStrictEqual(a, b),
err || { code: 'ERR_ASSERTION' }
);
assert.throws(
() => assert.deepEqual(b, a),
err || re`${b}\n\nshould equal\n\n${a}`
);
assert.throws(
() => assert.deepStrictEqual(b, a),
err || { code: 'ERR_ASSERTION' }
);
}
function assertOnlyDeepEqual(a, b, err) {
assert.deepEqual(a, b);
assert.throws(
() => assert.deepStrictEqual(a, b),
err || { code: 'ERR_ASSERTION' }
);
assert.deepEqual(b, a);
assert.throws(
() => assert.deepStrictEqual(b, a),
err || { code: 'ERR_ASSERTION' }
);
}
// es6 Maps and Sets
assertDeepAndStrictEqual(new Set(), new Set());
assertDeepAndStrictEqual(new Map(), new Map());
assertDeepAndStrictEqual(new Set([1, 2, 3]), new Set([1, 2, 3]));
assertNotDeepOrStrict(new Set([1, 2, 3]), new Set([1, 2, 3, 4]));
assertNotDeepOrStrict(new Set([1, 2, 3, 4]), new Set([1, 2, 3]));
assertDeepAndStrictEqual(new Set(['1', '2', '3']), new Set(['1', '2', '3']));
assertDeepAndStrictEqual(new Set([[1, 2], [3, 4]]), new Set([[3, 4], [1, 2]]));
assertNotDeepOrStrict(new Set([{ a: 0 }]), new Set([{ a: 1 }]));
{
const a = [ 1, 2 ];
const b = [ 3, 4 ];
const c = [ 1, 2 ];
const d = [ 3, 4 ];
assertDeepAndStrictEqual(
{ a: a, b: b, s: new Set([a, b]) },
{ a: c, b: d, s: new Set([d, c]) }
);
}
assertDeepAndStrictEqual(new Map([[1, 1], [2, 2]]), new Map([[1, 1], [2, 2]]));
assertDeepAndStrictEqual(new Map([[1, 1], [2, 2]]), new Map([[2, 2], [1, 1]]));
assertNotDeepOrStrict(new Map([[1, 1], [2, 2]]), new Map([[1, 2], [2, 1]]));
assertNotDeepOrStrict(
new Map([[[1], 1], [{}, 2]]),
new Map([[[1], 2], [{}, 1]])
);
assertNotDeepOrStrict(new Set([1]), [1]);
assertNotDeepOrStrict(new Set(), []);
assertNotDeepOrStrict(new Set(), {});
assertNotDeepOrStrict(new Map([['a', 1]]), { a: 1 });
assertNotDeepOrStrict(new Map(), []);
assertNotDeepOrStrict(new Map(), {});
assertOnlyDeepEqual(new Set(['1']), new Set([1]));
assertOnlyDeepEqual(new Map([['1', 'a']]), new Map([[1, 'a']]));
assertOnlyDeepEqual(new Map([['a', '1']]), new Map([['a', 1]]));
assertNotDeepOrStrict(new Map([['a', '1']]), new Map([['a', 2]]));
assertDeepAndStrictEqual(new Set([{}]), new Set([{}]));
// Ref: https://github.com/nodejs/node/issues/13347
assertNotDeepOrStrict(
new Set([{ a: 1 }, { a: 1 }]),
new Set([{ a: 1 }, { a: 2 }])
);
assertNotDeepOrStrict(
new Set([{ a: 1 }, { a: 1 }, { a: 2 }]),
new Set([{ a: 1 }, { a: 2 }, { a: 2 }])
);
assertNotDeepOrStrict(
new Map([[{ x: 1 }, 5], [{ x: 1 }, 5]]),
new Map([[{ x: 1 }, 5], [{ x: 2 }, 5]])
);
assertNotDeepOrStrict(new Set([3, '3']), new Set([3, 4]));
assertNotDeepOrStrict(new Map([[3, 0], ['3', 0]]), new Map([[3, 0], [4, 0]]));
assertNotDeepOrStrict(
new Set([{ a: 1 }, { a: 1 }, { a: 2 }]),
new Set([{ a: 1 }, { a: 2 }, { a: 2 }])
);
// Mixed primitive and object keys
assertDeepAndStrictEqual(
new Map([[1, 'a'], [{}, 'a']]),
new Map([[1, 'a'], [{}, 'a']])
);
assertDeepAndStrictEqual(
new Set([1, 'a', [{}, 'a']]),
new Set([1, 'a', [{}, 'a']])
);
// This is an awful case, where a map contains multiple equivalent keys:
assertOnlyDeepEqual(
new Map([[1, 'a'], ['1', 'b']]),
new Map([['1', 'a'], [true, 'b']])
);
assertNotDeepOrStrict(
new Set(['a']),
new Set(['b'])
);
assertDeepAndStrictEqual(
new Map([[{}, 'a'], [{}, 'b']]),
new Map([[{}, 'b'], [{}, 'a']])
);
assertOnlyDeepEqual(
new Map([[true, 'a'], ['1', 'b'], [1, 'a']]),
new Map([['1', 'a'], [1, 'b'], [true, 'a']])
);
assertNotDeepOrStrict(
new Map([[true, 'a'], ['1', 'b'], [1, 'c']]),
new Map([['1', 'a'], [1, 'b'], [true, 'a']])
);
// Similar object keys
assertNotDeepOrStrict(
new Set([{}, {}]),
new Set([{}, 1])
);
assertNotDeepOrStrict(
new Set([[{}, 1], [{}, 1]]),
new Set([[{}, 1], [1, 1]])
);
assertNotDeepOrStrict(
new Map([[{}, 1], [{}, 1]]),
new Map([[{}, 1], [1, 1]])
);
assertOnlyDeepEqual(
new Map([[{}, 1], [true, 1]]),
new Map([[{}, 1], [1, 1]])
);
// Similar primitive key / values
assertNotDeepOrStrict(
new Set([1, true, false]),
new Set(['1', 0, '0'])
);
assertNotDeepOrStrict(
new Map([[1, 5], [true, 5], [false, 5]]),
new Map([['1', 5], [0, 5], ['0', 5]])
);
// undefined value in Map
assertDeepAndStrictEqual(
new Map([[1, undefined]]),
new Map([[1, undefined]])
);
assertOnlyDeepEqual(
new Map([[1, null], ['', '0']]),
new Map([['1', undefined], [false, 0]])
);
assertNotDeepOrStrict(
new Map([[1, undefined]]),
new Map([[2, undefined]])
);
// null as key
assertDeepAndStrictEqual(
new Map([[null, 3]]),
new Map([[null, 3]])
);
assertOnlyDeepEqual(
new Map([[null, undefined]]),
new Map([[undefined, null]])
);
assertOnlyDeepEqual(
new Set([null, '']),
new Set([undefined, 0])
);
assertNotDeepOrStrict(
new Set(['']),
new Set(['0'])
);
// GH-6416. Make sure circular refs don't throw.
{
const b = {};
b.b = b;
const c = {};
c.b = c;
assertDeepAndStrictEqual(b, c);
const d = {};
d.a = 1;
d.b = d;
const e = {};
e.a = 1;
e.b = {};
assertNotDeepOrStrict(d, e);
}
// GH-14441. Circular structures should be consistent
{
const a = {};
const b = {};
a.a = a;
b.a = {};
b.a.a = a;
assertDeepAndStrictEqual(a, b);
}
{
const a = new Set();
const b = new Set();
const c = new Set();
a.add(a);
b.add(b);
c.add(a);
assertDeepAndStrictEqual(b, c);
}
// https://github.com/nodejs/node-v0.x-archive/pull/7178
// Ensure reflexivity of deepEqual with `arguments` objects.
{
const args = (function() { return arguments; })();
assertNotDeepOrStrict([], args);
}
// More checking that arguments objects are handled correctly
{
// eslint-disable-next-line func-style
const returnArguments = function() { return arguments; };
const someArgs = returnArguments('a');
const sameArgs = returnArguments('a');
const diffArgs = returnArguments('b');
assertNotDeepOrStrict(someArgs, ['a']);
assertNotDeepOrStrict(someArgs, { '0': 'a' });
assertNotDeepOrStrict(someArgs, diffArgs);
assertDeepAndStrictEqual(someArgs, sameArgs);
}
{
const values = [
123,
Infinity,
0,
null,
undefined,
false,
true,
{},
[],
() => {},
];
assertDeepAndStrictEqual(new Set(values), new Set(values));
assertDeepAndStrictEqual(new Set(values), new Set(values.reverse()));
const mapValues = values.map((v) => [v, { a: 5 }]);
assertDeepAndStrictEqual(new Map(mapValues), new Map(mapValues));
assertDeepAndStrictEqual(new Map(mapValues), new Map(mapValues.reverse()));
}
{
const s1 = new Set();
const s2 = new Set();
s1.add(1);
s1.add(2);
s2.add(2);
s2.add(1);
assertDeepAndStrictEqual(s1, s2);
}
{
const m1 = new Map();
const m2 = new Map();
const obj = { a: 5, b: 6 };
m1.set(1, obj);
m1.set(2, 'hi');
m1.set(3, [1, 2, 3]);
m2.set(2, 'hi'); // different order
m2.set(1, obj);
m2.set(3, [1, 2, 3]); // deep equal, but not reference equal.
assertDeepAndStrictEqual(m1, m2);
}
{
const m1 = new Map();
const m2 = new Map();
// m1 contains itself.
m1.set(1, m1);
m2.set(1, new Map());
assertNotDeepOrStrict(m1, m2);
}
{
const map1 = new Map([[1, 1]]);
const map2 = new Map([[1, '1']]);
assert.deepEqual(map1, map2);
assert.throws(
() => assert.deepStrictEqual(map1, map2),
{
code: 'ERR_ASSERTION',
message: `${defaultMsgStartFull}\n\n` +
" Map {\n+ 1 => 1\n- 1 => '1'\n }"
}
);
}
{
// Two equivalent sets / maps with different key/values applied shouldn't be
// the same. This is a terrible idea to do in practice, but deepEqual should
// still check for it.
const s1 = new Set();
const s2 = new Set();
s1.x = 5;
assertNotDeepOrStrict(s1, s2);
const m1 = new Map();
const m2 = new Map();
m1.x = 5;
assertNotDeepOrStrict(m1, m2);
}
{
// Circular references.
const s1 = new Set();
s1.add(s1);
const s2 = new Set();
s2.add(s2);
assertDeepAndStrictEqual(s1, s2);
const m1 = new Map();
m1.set(2, m1);
const m2 = new Map();
m2.set(2, m2);
assertDeepAndStrictEqual(m1, m2);
const m3 = new Map();
m3.set(m3, 2);
const m4 = new Map();
m4.set(m4, 2);
assertDeepAndStrictEqual(m3, m4);
}
// Handle sparse arrays
assertDeepAndStrictEqual([1, , , 3], [1, , , 3]);
assertOnlyDeepEqual([1, , , 3], [1, , , 3, , , ]);
// Handle different error messages
{
const err1 = new Error('foo1');
const err2 = new Error('foo2');
const err3 = new TypeError('foo1');
assertNotDeepOrStrict(err1, err2, assert.AssertionError);
assertNotDeepOrStrict(err1, err3, assert.AssertionError);
// TODO: evaluate if this should throw or not. The same applies for RegExp
// Date and any object that has the same keys but not the same prototype.
assertOnlyDeepEqual(err1, {}, assert.AssertionError);
}
// Handle NaN
assert.throws(() => { assert.deepEqual(NaN, NaN); }, assert.AssertionError);
assert.deepStrictEqual(NaN, NaN);
assert.deepStrictEqual({ a: NaN }, { a: NaN });
assert.deepStrictEqual([ 1, 2, NaN, 4 ], [ 1, 2, NaN, 4 ]);
// Handle boxed primitives
{
const boxedString = new String('test');
const boxedSymbol = Object(Symbol());
assertOnlyDeepEqual(new Boolean(true), Object(false));
assertOnlyDeepEqual(Object(true), new Number(1));
assertOnlyDeepEqual(new Number(2), new Number(1));
assertOnlyDeepEqual(boxedSymbol, Object(Symbol()));
assertOnlyDeepEqual(boxedSymbol, {});
assertDeepAndStrictEqual(boxedSymbol, boxedSymbol);
assertDeepAndStrictEqual(Object(true), Object(true));
assertDeepAndStrictEqual(Object(2), Object(2));
assertDeepAndStrictEqual(boxedString, Object('test'));
boxedString.slow = true;
assertNotDeepOrStrict(boxedString, Object('test'));
boxedSymbol.slow = true;
assertNotDeepOrStrict(boxedSymbol, {});
}
// Minus zero
assertOnlyDeepEqual(0, -0);
assertDeepAndStrictEqual(-0, -0);
// Handle symbols (enumerable only)
{
const symbol1 = Symbol();
const obj1 = { [symbol1]: 1 };
const obj2 = { [symbol1]: 1 };
const obj3 = { [Symbol()]: 1 };
// Add a non enumerable symbol as well. It is going to be ignored!
Object.defineProperty(obj2, Symbol(), { value: 1 });
assertOnlyDeepEqual(obj1, obj3);
assertDeepAndStrictEqual(obj1, obj2);
// TypedArrays have a fast path. Test for this as well.
const a = new Uint8Array(4);
const b = new Uint8Array(4);
a[symbol1] = true;
b[symbol1] = false;
assertOnlyDeepEqual(a, b);
b[symbol1] = true;
assertDeepAndStrictEqual(a, b);
// The same as TypedArrays is valid for boxed primitives
const boxedStringA = new String('test');
const boxedStringB = new String('test');
boxedStringA[symbol1] = true;
assertOnlyDeepEqual(boxedStringA, boxedStringB);
boxedStringA[symbol1] = true;
assertDeepAndStrictEqual(a, b);
}
assert.deepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14));
assert.throws(() => assert.deepEqual(new Date(), new Date(2000, 3, 14)),
AssertionError,
'deepEqual(new Date(), new Date(2000, 3, 14))');
assert.throws(
() => assert.notDeepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14)),
AssertionError,
'notDeepEqual(new Date(2000, 3, 14), new Date(2000, 3, 14))'
);
assert.notDeepEqual(new Date(), new Date(2000, 3, 14));
assertDeepAndStrictEqual(/a/, /a/);
assertDeepAndStrictEqual(/a/g, /a/g);
assertDeepAndStrictEqual(/a/i, /a/i);
assertDeepAndStrictEqual(/a/m, /a/m);
assertDeepAndStrictEqual(/a/igm, /a/igm);
assertNotDeepOrStrict(/ab/, /a/);
assertNotDeepOrStrict(/a/g, /a/);
assertNotDeepOrStrict(/a/i, /a/);
assertNotDeepOrStrict(/a/m, /a/);
assertNotDeepOrStrict(/a/igm, /a/im);
{
const re1 = /a/g;
re1.lastIndex = 3;
assert.deepEqual(re1, /a/g);
}
assert.deepEqual(4, '4');
assert.deepEqual(true, 1);
assert.throws(() => assert.deepEqual(4, '5'),
AssertionError,
'deepEqual( 4, \'5\')');
// Having the same number of owned properties && the same set of keys.
assert.deepEqual({ a: 4 }, { a: 4 });
assert.deepEqual({ a: 4, b: '2' }, { a: 4, b: '2' });
assert.deepEqual([4], ['4']);
assert.throws(
() => assert.deepEqual({ a: 4 }, { a: 4, b: true }), AssertionError);
assert.deepEqual(['a'], { 0: 'a' });
assert.deepEqual({ a: 4, b: '1' }, { b: '1', a: 4 });
const a1 = [1, 2, 3];
const a2 = [1, 2, 3];
a1.a = 'test';
a1.b = true;
a2.b = true;
a2.a = 'test';
assert.throws(() => assert.deepEqual(Object.keys(a1), Object.keys(a2)),
AssertionError);
assert.deepEqual(a1, a2);
// Having an identical prototype property.
const nbRoot = {
toString() { return `${this.first} ${this.last}`; }
};
function nameBuilder(first, last) {
this.first = first;
this.last = last;
return this;
}
nameBuilder.prototype = nbRoot;
function nameBuilder2(first, last) {
this.first = first;
this.last = last;
return this;
}
nameBuilder2.prototype = nbRoot;
const nb1 = new nameBuilder('Ryan', 'Dahl');
let nb2 = new nameBuilder2('Ryan', 'Dahl');
assert.deepEqual(nb1, nb2);
nameBuilder2.prototype = Object;
nb2 = new nameBuilder2('Ryan', 'Dahl');
assert.deepEqual(nb1, nb2);
// Primitives
assertNotDeepOrStrict(null, {});
assertNotDeepOrStrict(undefined, {});
assertNotDeepOrStrict('a', ['a']);
assertNotDeepOrStrict('a', { 0: 'a' });
assertNotDeepOrStrict(1, {});
assertNotDeepOrStrict(true, {});
assertNotDeepOrStrict(Symbol(), {});
assertNotDeepOrStrict(Symbol(), Symbol());
assertOnlyDeepEqual(4, '4');
assertOnlyDeepEqual(true, 1);
{
const s = Symbol();
assertDeepAndStrictEqual(s, s);
}
// Primitive wrappers and object.
assertOnlyDeepEqual(new String('a'), ['a']);
assertOnlyDeepEqual(new String('a'), { 0: 'a' });
assertOnlyDeepEqual(new Number(1), {});
assertOnlyDeepEqual(new Boolean(true), {});
// Same number of keys but different key names.
assertNotDeepOrStrict({ a: 1 }, { b: 1 });
assert.deepStrictEqual(new Date(2000, 3, 14), new Date(2000, 3, 14));
assert.throws(
() => assert.deepStrictEqual(new Date(), new Date(2000, 3, 14)),
AssertionError,
'deepStrictEqual(new Date(), new Date(2000, 3, 14))'
);
assert.throws(
() => assert.notDeepStrictEqual(new Date(2000, 3, 14), new Date(2000, 3, 14)),
{
name: 'AssertionError [ERR_ASSERTION]',
message: 'Expected "actual" not to be strictly deep-equal to: ' +
util.inspect(new Date(2000, 3, 14))
}
);
assert.notDeepStrictEqual(new Date(), new Date(2000, 3, 14));
assert.throws(
() => assert.deepStrictEqual(/ab/, /a/),
{
code: 'ERR_ASSERTION',
name: 'AssertionError [ERR_ASSERTION]',
message: `${defaultMsgStartFull}\n\n+ /ab/\n- /a/`
});
assert.throws(
() => assert.deepStrictEqual(/a/g, /a/),
{
code: 'ERR_ASSERTION',
name: 'AssertionError [ERR_ASSERTION]',
message: `${defaultMsgStartFull}\n\n+ /a/g\n- /a/`
});
assert.throws(
() => assert.deepStrictEqual(/a/i, /a/),
{
code: 'ERR_ASSERTION',
name: 'AssertionError [ERR_ASSERTION]',
message: `${defaultMsgStartFull}\n\n+ /a/i\n- /a/`
});
assert.throws(
() => assert.deepStrictEqual(/a/m, /a/),
{
code: 'ERR_ASSERTION',
name: 'AssertionError [ERR_ASSERTION]',
message: `${defaultMsgStartFull}\n\n+ /a/m\n- /a/`
});
assert.throws(
() => assert.deepStrictEqual(/a/igm, /a/im),
{
code: 'ERR_ASSERTION',
name: 'AssertionError [ERR_ASSERTION]',
message: `${defaultMsgStartFull}\n\n+ /a/gim\n- /a/im\n ^`
});
{
const re1 = /a/;
re1.lastIndex = 3;
assert.deepStrictEqual(re1, /a/);
}
assert.throws(
() => assert.deepStrictEqual(4, '4'),
{ message: `${defaultMsgStart}\n4 !== '4'\n` }
);
assert.throws(
() => assert.deepStrictEqual(true, 1),
{ message: `${defaultMsgStart}\ntrue !== 1\n` }
);
// Having the same number of owned properties && the same set of keys.
assert.deepStrictEqual({ a: 4 }, { a: 4 });
assert.deepStrictEqual({ a: 4, b: '2' }, { a: 4, b: '2' });
assert.throws(() => assert.deepStrictEqual([4], ['4']),
{
code: 'ERR_ASSERTION',
name: 'AssertionError [ERR_ASSERTION]',
message: `${defaultMsgStartFull}\n\n [\n+ 4\n- '4'\n ]`
});
assert.throws(
() => assert.deepStrictEqual({ a: 4 }, { a: 4, b: true }),
{
code: 'ERR_ASSERTION',
name: 'AssertionError [ERR_ASSERTION]',
message: `${defaultMsgStartFull}\n\n ` +
'{\n+ a: 4\n- a: 4,\n- b: true\n }'
});
assert.throws(
() => assert.deepStrictEqual(['a'], { 0: 'a' }),
{
code: 'ERR_ASSERTION',
name: 'AssertionError [ERR_ASSERTION]',
message: `${defaultMsgStartFull}\n\n` +
"+ [\n+ 'a'\n+ ]\n- {\n- '0': 'a'\n- }"
});
/* eslint-enable */
assert.deepStrictEqual({ a: 4, b: '1' }, { b: '1', a: 4 });
assert.throws(
() => assert.deepStrictEqual([0, 1, 2, 'a', 'b'], [0, 1, 2, 'b', 'a']),
AssertionError);
assert.deepStrictEqual(a1, a2);
// Prototype check.
function Constructor1(first, last) {
this.first = first;
this.last = last;
}
function Constructor2(first, last) {
this.first = first;
this.last = last;
}
const obj1 = new Constructor1('Ryan', 'Dahl');
let obj2 = new Constructor2('Ryan', 'Dahl');
assert.throws(() => assert.deepStrictEqual(obj1, obj2), AssertionError);
Constructor2.prototype = Constructor1.prototype;
obj2 = new Constructor2('Ryan', 'Dahl');
assert.deepStrictEqual(obj1, obj2);
// Check extra properties on errors.
{
const a = new TypeError('foo');
const b = new TypeError('foo');
a.foo = 'bar';
b.foo = 'baz';
assert.throws(
() => assert.deepStrictEqual(a, b),
{
message: `${defaultMsgStartFull}\n\n` +
' [TypeError: foo] {\n+ foo: \'bar\'\n- foo: \'baz\'\n }'
}
);
}
// Check proxies.
{
// TODO(BridgeAR): Check if it would not be better to detect proxies instead
// of just using the proxy value.
const arrProxy = new Proxy([1, 2], {});
assert.deepStrictEqual(arrProxy, [1, 2]);
const tmp = util.inspect.defaultOptions;
util.inspect.defaultOptions = { showProxy: true };
assert.throws(
() => assert.deepStrictEqual(arrProxy, [1, 2, 3]),
{ message: `${defaultMsgStartFull}\n\n` +
' [\n 1,\n+ 2\n- 2,\n- 3\n ]' }
);
util.inspect.defaultOptions = tmp;
}