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Add ES6 Symbol support #672

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Apr 8, 2016
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5 changes: 4 additions & 1 deletion lib/chai/interface/should.js
Original file line number Diff line number Diff line change
Expand Up @@ -10,7 +10,10 @@ module.exports = function (chai, util) {
function loadShould () {
// explicitly define this method as function as to have it's name to include as `ssfi`
function shouldGetter() {
if (this instanceof String || this instanceof Number || this instanceof Boolean ) {
if (this instanceof String
|| this instanceof Number
|| this instanceof Boolean
|| typeof Symbol === 'function' && this instanceof Symbol) {
return new Assertion(this.valueOf(), null, shouldGetter);
}
return new Assertion(this, null, shouldGetter);
Expand Down
51 changes: 51 additions & 0 deletions test/assert.js
Original file line number Diff line number Diff line change
Expand Up @@ -107,13 +107,22 @@ describe('assert', function () {
it('equal', function () {
var foo;
assert.equal(foo, undefined);

if (typeof Symbol === 'function') {
var sym = Symbol();
assert.equal(sym, sym);
}
});

it('typeof', function () {
assert.typeOf('test', 'string');
assert.typeOf(true, 'boolean');
assert.typeOf(5, 'number');

if (typeof Symbol === 'function') {
assert.typeOf(Symbol(), 'symbol');
}

err(function () {
assert.typeOf(5, 'string');
}, "expected 5 to be a string");
Expand Down Expand Up @@ -182,6 +191,12 @@ describe('assert', function () {
it('notEqual', function() {
assert.notEqual(3, 4);

if (typeof Symbol === 'function') {
var sym1 = Symbol()
, sym2 = Symbol();
assert.notEqual(sym1, sym2);
}

err(function () {
assert.notEqual(5, 5);
}, "expected 5 to not equal 5");
Expand All @@ -190,6 +205,11 @@ describe('assert', function () {
it('strictEqual', function() {
assert.strictEqual('foo', 'foo');

if (typeof Symbol === 'function') {
var sym = Symbol();
assert.strictEqual(sym, sym);
}

err(function () {
assert.strictEqual('5', 5);
}, "expected \'5\' to equal 5");
Expand All @@ -198,6 +218,12 @@ describe('assert', function () {
it('notStrictEqual', function() {
assert.notStrictEqual(5, '5');

if (typeof Symbol === 'function') {
var sym1 = Symbol()
, sym2 = Symbol();
assert.notStrictEqual(sym1, sym2);
}

err(function () {
assert.notStrictEqual(5, 5);
}, "expected 5 to not equal 5");
Expand Down Expand Up @@ -435,6 +461,12 @@ describe('assert', function () {
assert.include([ 1, 2, 3], 3);
assert.include({a:1, b:2}, {b:2});

if (typeof Symbol === 'function') {
var sym1 = Symbol()
, sym2 = Symbol();
assert.include([sym1, sym2], sym1);
}

err(function () {
assert.include('foobar', 'baz');
}, "expected \'foobar\' to include \'baz\'");
Expand All @@ -460,6 +492,13 @@ describe('assert', function () {
assert.notInclude('foobar', 'baz');
assert.notInclude([ 1, 2, 3 ], 4);

if (typeof Symbol === 'function') {
var sym1 = Symbol()
, sym2 = Symbol()
, sym3 = Symbol();
assert.notInclude([sym1, sym2], sym3);
}

err(function(){
assert.notInclude(true, true);
}, "object tested must be an array, an object, or a string, but boolean given");
Expand Down Expand Up @@ -1256,6 +1295,10 @@ describe('assert', function () {
assert[isNotExtensible]('foo');
assert[isNotExtensible](false);
assert[isNotExtensible](undefined);

if (typeof Symbol === 'function') {
assert[isNotExtensible](Symbol());
}
});
});

Expand All @@ -1276,6 +1319,10 @@ describe('assert', function () {
assert[isSealed]('foo');
assert[isSealed](false);
assert[isSealed](undefined);

if (typeof Symbol === 'function') {
assert[isSealed](Symbol());
}
});
});

Expand Down Expand Up @@ -1330,6 +1377,10 @@ describe('assert', function () {
assert[isFrozen]('foo');
assert[isFrozen](false);
assert[isFrozen](undefined);

if (typeof Symbol === 'function') {
assert[isFrozen](Symbol());
}
});
});

Expand Down
34 changes: 34 additions & 0 deletions test/expect.js
Original file line number Diff line number Diff line change
Expand Up @@ -116,6 +116,10 @@ describe('expect', function () {
expect(function() {}).to.be.a('function');
expect(null).to.be.a('null');

if (typeof Symbol === 'function') {
expect(Symbol()).to.be.a('symbol');
}

err(function(){
expect(5).to.not.be.a('number', 'blah');
}, "blah: expected 5 not to be a number");
Expand Down Expand Up @@ -300,6 +304,11 @@ describe('expect', function () {
expect(1).to.eql(1);
expect('4').to.not.eql(4);

if (typeof Symbol === 'function') {
var sym = Symbol();
expect(sym).to.eql(sym);
}

err(function(){
expect(4).to.eql(3, 'blah');
}, 'blah: expected 4 to deeply equal 3');
Expand All @@ -319,6 +328,11 @@ describe('expect', function () {
expect('test').to.equal('test');
expect(1).to.equal(1);

if (typeof Symbol === 'function') {
var sym = Symbol();
expect(sym).to.equal(sym);
}

err(function(){
expect(4).to.equal(3, 'blah');
}, 'blah: expected 4 to equal 3');
Expand Down Expand Up @@ -624,6 +638,14 @@ describe('expect', function () {
expect([{a:1}]).to.include({a:1});
expect([{a:1}]).to.not.include({b:1});

if (typeof Symbol === 'function') {
var sym1 = Symbol()
, sym2 = Symbol()
, sym3 = Symbol();
expect([sym1, sym2]).to.include(sym1);
expect([sym1, sym2]).to.not.include(sym3);
}

err(function(){
expect(['foo']).to.include('bar', 'blah');
}, "blah: expected [ 'foo' ] to include 'bar'");
Expand Down Expand Up @@ -1283,6 +1305,10 @@ describe('expect', function () {
expect(false).to.not.be.extensible;
expect(undefined).to.not.be.extensible;

if (typeof Symbol === 'function') {
expect(Symbol()).to.not.be.extensible;
}

err(function() {
expect(42).to.be.extensible;
}, 'expected 42 to be extensible');
Expand Down Expand Up @@ -1326,6 +1352,10 @@ describe('expect', function () {
expect(false).to.be.sealed;
expect(undefined).to.be.sealed;

if (typeof Symbol === 'function') {
expect(Symbol()).to.be.sealed;
}

err(function() {
expect(42).to.not.be.sealed;
}, 'expected 42 to not be sealed');
Expand Down Expand Up @@ -1369,6 +1399,10 @@ describe('expect', function () {
expect(false).to.be.frozen;
expect(undefined).to.be.frozen;

if (typeof Symbol === 'function') {
expect(Symbol()).to.be.frozen;
}

err(function() {
expect(42).to.not.be.frozen;
}, 'expected 42 to not be frozen');
Expand Down
34 changes: 34 additions & 0 deletions test/should.js
Original file line number Diff line number Diff line change
Expand Up @@ -146,6 +146,10 @@ describe('should', function() {
([]).should.be.a('array');
(function() {}).should.be.a('function');

if (typeof Symbol === 'function') {
Symbol().should.be.a('symbol');
}

(5).should.be.a('number');

err(function(){
Expand Down Expand Up @@ -301,6 +305,11 @@ describe('should', function() {
(1).should.eql(1);
'4'.should.not.eql(4);

if (typeof Symbol === 'function') {
var sym = Symbol();
sym.should.eql(sym);
}

err(function(){
(4).should.eql(3, 'blah');
}, 'blah: expected 4 to deeply equal 3');
Expand All @@ -310,6 +319,11 @@ describe('should', function() {
'test'.should.equal('test');
(1).should.equal(1);

if (typeof Symbol === 'function') {
var sym = Symbol();
sym.should.equal(sym);
}

err(function(){
(4).should.equal(3, 'blah');
}, 'blah: expected 4 to equal 3');
Expand Down Expand Up @@ -484,6 +498,14 @@ describe('should', function() {
({a:1,b:2}).should.include({b:2});
({a:1,b:2}).should.not.include({b:3});

if (typeof Symbol === 'function') {
var sym1 = Symbol()
, sym2 = Symbol()
, sym3 = Symbol();
[sym1, sym2].should.include(sym1);
[sym1, sym2].should.not.include(sym3);
}

err(function(){
['foo'].should.include('bar', 'blah');
}, "blah: expected [ 'foo' ] to include 'bar'");
Expand Down Expand Up @@ -1132,6 +1154,10 @@ describe('should', function() {
'foo'.should.not.be.extensible;
false.should.not.be.extensible;

if (typeof Symbol === 'function') {
Symbol().should.not.be.extensible;
}

err(function() {
(42).should.be.extensible;
}, 'expected 42 to be extensible');
Expand Down Expand Up @@ -1165,6 +1191,10 @@ describe('should', function() {
'foo'.should.be.sealed;
false.should.be.sealed;

if (typeof Symbol === 'function') {
Symbol().should.be.sealed;
}

err(function() {
(42).should.not.be.sealed;
}, 'expected 42 to not be sealed');
Expand Down Expand Up @@ -1198,6 +1228,10 @@ describe('should', function() {
'foo'.should.be.frozen;
false.should.be.frozen;

if (typeof Symbol === 'function') {
Symbol().should.be.frozen;
}

err(function() {
(42).should.not.be.frozen;
}, 'expected 42 to not be frozen');
Expand Down