var R = require('../source');var eq = require('./shared/eq');
describe('equals', function() { var a = []; var b = a; it('tests for deep equality of its operands', function() { eq(R.equals(100, 100), true); eq(R.equals(100, '100'), false); eq(R.equals([], []), true); eq(R.equals(a, b), true); });
it('considers equal Boolean primitives equal', function() { eq(R.equals(true, true), true); eq(R.equals(false, false), true); eq(R.equals(true, false), false); eq(R.equals(false, true), false); });
it('considers equivalent Boolean objects equal', function() { eq(R.equals(new Boolean(true), new Boolean(true)), true); eq(R.equals(new Boolean(false), new Boolean(false)), true); eq(R.equals(new Boolean(true), new Boolean(false)), false); eq(R.equals(new Boolean(false), new Boolean(true)), false); });
it('never considers Boolean primitive equal to Boolean object', function() { eq(R.equals(true, new Boolean(true)), false); eq(R.equals(new Boolean(true), true), false); eq(R.equals(false, new Boolean(false)), false); eq(R.equals(new Boolean(false), false), false); });
it('considers equal number primitives equal', function() { eq(R.equals(0, 0), true); eq(R.equals(0, 1), false); eq(R.equals(1, 0), false); });
it('considers equivalent Number objects equal', function() { eq(R.equals(new Number(0), new Number(0)), true); eq(R.equals(new Number(0), new Number(1)), false); eq(R.equals(new Number(1), new Number(0)), false); });
it('never considers number primitive equal to Number object', function() { eq(R.equals(0, new Number(0)), false); eq(R.equals(new Number(0), 0), false); });
it('considers equal string primitives equal', function() { eq(R.equals('', ''), true); eq(R.equals('', 'x'), false); eq(R.equals('x', ''), false); eq(R.equals('foo', 'foo'), true); eq(R.equals('foo', 'bar'), false); eq(R.equals('bar', 'foo'), false); });
it('considers equivalent String objects equal', function() { eq(R.equals(new String(''), new String('')), true); eq(R.equals(new String(''), new String('x')), false); eq(R.equals(new String('x'), new String('')), false); eq(R.equals(new String('foo'), new String('foo')), true); eq(R.equals(new String('foo'), new String('bar')), false); eq(R.equals(new String('bar'), new String('foo')), false); });
it('never considers string primitive equal to String object', function() { eq(R.equals('', new String('')), false); eq(R.equals(new String(''), ''), false); eq(R.equals('x', new String('x')), false); eq(R.equals(new String('x'), 'x'), false); });
it('handles objects', function() { eq(R.equals({}, {}), true); eq(R.equals({a:1, b:2}, {a:1, b:2}), true); eq(R.equals({a:2, b:3}, {b:3, a:2}), true); eq(R.equals({a:2, b:3}, {a:3, b:3}), false); eq(R.equals({a:2, b:3, c:1}, {a:2, b:3}), false); });
it('considers equivalent Arguments objects equal', function() { var a = (function() { return arguments; }()); var b = (function() { return arguments; }()); var c = (function() { return arguments; }(1, 2, 3)); var d = (function() { return arguments; }(1, 2, 3));
eq(R.equals(a, b), true); eq(R.equals(b, a), true); eq(R.equals(c, d), true); eq(R.equals(d, c), true); eq(R.equals(a, c), false); eq(R.equals(c, a), false); });
it('considers equivalent Error objects equal', function() { eq(R.equals(new Error('XXX'), new Error('XXX')), true); eq(R.equals(new Error('XXX'), new Error('YYY')), false); eq(R.equals(new Error('XXX'), new TypeError('XXX')), false); eq(R.equals(new Error('XXX'), new TypeError('YYY')), false); });
var supportsSticky = false; try { RegExp('', 'y'); supportsSticky = true; } catch (e) {}
var supportsUnicode = false; try { RegExp('', 'u'); supportsUnicode = true; } catch (e) {}
it('handles regex', function() { eq(R.equals(/\s/, /\s/), true); eq(R.equals(/\s/, /\d/), false); eq(R.equals(/a/gi, /a/ig), true); eq(R.equals(/a/mgi, /a/img), true); eq(R.equals(/a/gi, /a/i), false);
if (supportsSticky) { }
if (supportsUnicode) { } });
var listA = [1, 2, 3]; var listB = [1, 3, 2]; it('handles lists', function() { eq(R.equals([], {}), false); eq(R.equals(listA, listB), false); });
var c = {}; c.v = c; var d = {}; d.v = d; var e = []; e.push(e); var f = []; f.push(f); var nestA = {a:[1, 2, {c:1}], b:1}; var nestB = {a:[1, 2, {c:1}], b:1}; var nestC = {a:[1, 2, {c:2}], b:1}; it('handles recursive data structures', function() { eq(R.equals(c, d), true); eq(R.equals(e, f), true); eq(R.equals(nestA, nestB), true); eq(R.equals(nestA, nestC), false); });
it('handles dates', function() { eq(R.equals(new Date(0), new Date(0)), true); eq(R.equals(new Date(1), new Date(1)), true); eq(R.equals(new Date(0), new Date(1)), false); eq(R.equals(new Date(1), new Date(0)), false); });
it('requires that both objects have the same enumerable properties with the same values', function() { var a1 = []; var a2 = []; a2.x = 0;
var b1 = new Boolean(false); var b2 = new Boolean(false); b2.x = 0;
var d1 = new Date(0); var d2 = new Date(0); d2.x = 0;
var n1 = new Number(0); var n2 = new Number(0); n2.x = 0;
var r1 = /(?:)/; var r2 = /(?:)/; r2.x = 0;
var s1 = new String(''); var s2 = new String(''); s2.x = 0;
eq(R.equals(a1, a2), false); eq(R.equals(b1, b2), false); eq(R.equals(d1, d2), false); eq(R.equals(n1, n2), false); eq(R.equals(r1, r2), false); eq(R.equals(s1, s2), false); });
if (typeof ArrayBuffer !== 'undefined' && typeof Int8Array !== 'undefined') { var typArr1 = new ArrayBuffer(10); typArr1[0] = 1; var typArr2 = new ArrayBuffer(10); typArr2[0] = 1; var typArr3 = new ArrayBuffer(10); var intTypArr = new Int8Array(typArr1); typArr3[0] = 0; it('handles typed arrays', function() { eq(R.equals(typArr1, typArr2), true); eq(R.equals(typArr1, typArr3), false); eq(R.equals(typArr1, intTypArr), false); }); }
if (typeof Promise !== 'undefined') { it('compares Promise objects by identity', function() { var p = Promise.resolve(42); var q = Promise.resolve(42); eq(R.equals(p, p), true); eq(R.equals(p, q), false); }); }
if (typeof Map !== 'undefined') { it('compares Map objects by value', function() { eq(R.equals(new Map([]), new Map([])), true); eq(R.equals(new Map([]), new Map([[1, 'a']])), false); eq(R.equals(new Map([[1, 'a']]), new Map([])), false); eq(R.equals(new Map([[1, 'a']]), new Map([[1, 'a']])), true); eq(R.equals(new Map([[1, 'a'], [2, 'b']]), new Map([[2, 'b'], [1, 'a']])), true); eq(R.equals(new Map([[1, 'a']]), new Map([[2, 'a']])), false); eq(R.equals(new Map([[1, 'a']]), new Map([[1, 'b']])), false); eq(R.equals(new Map([[1, 'a'], [2, new Map([[3, 'c']])]]), new Map([[1, 'a'], [2, new Map([[3, 'c']])]])), true); eq(R.equals(new Map([[1, 'a'], [2, new Map([[3, 'c']])]]), new Map([[1, 'a'], [2, new Map([[3, 'd']])]])), false); eq(R.equals(new Map([[[1, 2, 3], [4, 5, 6]]]), new Map([[[1, 2, 3], [4, 5, 6]]])), true); eq(R.equals(new Map([[[1, 2, 3], [4, 5, 6]]]), new Map([[[1, 2, 3], [7, 8, 9]]])), false); }); it('dispatches to `equals` method recursively in Set', function() { var a = new Map(); var b = new Map(); a.set(a, a); eq(R.equals(a, b), false); a.set(b, b); b.set(b, b); b.set(a, a); eq(R.equals(a, b), true); }); }
if (typeof Set !== 'undefined') { it('compares Set objects by value', function() { eq(R.equals(new Set([]), new Set([])), true); eq(R.equals(new Set([]), new Set([1])), false); eq(R.equals(new Set([1]), new Set([])), false); eq(R.equals(new Set([1, 2]), new Set([2, 1])), true); eq(R.equals(new Set([1, new Set([2, new Set([3])])]), new Set([1, new Set([2, new Set([3])])])), true); eq(R.equals(new Set([1, new Set([2, new Set([3])])]), new Set([1, new Set([2, new Set([4])])])), false); eq(R.equals(new Set([[1, 2, 3], [4, 5, 6]]), new Set([[1, 2, 3], [4, 5, 6]])), true); eq(R.equals(new Set([[1, 2, 3], [4, 5, 6]]), new Set([[1, 2, 3], [7, 8, 9]])), false); }); it('dispatches to `equals` method recursively in Set', function() { var a = new Set(); var b = new Set(); a.add(a); eq(R.equals(a, b), false); a.add(b); b.add(b); b.add(a); eq(R.equals(a, b), true); }); }
if (typeof WeakMap !== 'undefined') { it('compares WeakMap objects by identity', function() { var m = new WeakMap([]); eq(R.equals(m, m), true); eq(R.equals(m, new WeakMap([])), false); }); }
if (typeof WeakSet !== 'undefined') { it('compares WeakSet objects by identity', function() { var s = new WeakSet([]); eq(R.equals(s, s), true); eq(R.equals(s, new WeakSet([])), false); }); }
it('dispatches to `equals` method recursively', function() { function Left(x) { this.value = x; } Left.prototype.equals = function(x) { return x instanceof Left && R.equals(x.value, this.value); };
function Right(x) { this.value = x; } Right.prototype.equals = function(x) { return x instanceof Right && R.equals(x.value, this.value); };
eq(R.equals(new Left([42]), new Left([42])), true); eq(R.equals(new Left([42]), new Left([43])), false); eq(R.equals(new Left(42), {value: 42}), false); eq(R.equals({value: 42}, new Left(42)), false); eq(R.equals(new Left(42), new Right(42)), false); eq(R.equals(new Right(42), new Left(42)), false);
eq(R.equals([new Left(42)], [new Left(42)]), true); eq(R.equals([new Left(42)], [new Right(42)]), false); eq(R.equals([new Right(42)], [new Left(42)]), false); eq(R.equals([new Right(42)], [new Right(42)]), true); });
it('is commutative', function() { function Point(x, y) { this.x = x; this.y = y; } Point.prototype.equals = function(point) { return point instanceof Point && this.x === point.x && this.y === point.y; };
function ColorPoint(x, y, color) { this.x = x; this.y = y; this.color = color; } ColorPoint.prototype = new Point(0, 0); ColorPoint.prototype.equals = function(point) { return point instanceof ColorPoint && this.x === point.x && this.y === point.y && this.color === point.color; };
eq(R.equals(new Point(2, 2), new ColorPoint(2, 2, 'red')), false); eq(R.equals(new ColorPoint(2, 2, 'red'), new Point(2, 2)), false); });
});