chai/test/expect.js
2012-09-05 11:13:14 -07:00

669 lines
20 KiB
JavaScript

/*!
* Module dependencies.
*
* Chai is automatically included in the browser.
*/
if (!chai) {
var chai = require('..');
}
var expect = chai.expect;
function err(fn, msg) {
try {
fn();
throw new chai.AssertionError({ message: 'Expected an error' });
} catch (err) {
expect(err.message).to.equal(msg);
}
}
suite('expect', function () {
test('chai.version', function() {
expect(chai).to.have.property('version');
});
test('assertion', function(){
expect('test').to.be.a('string');
expect('foo').to.equal('foo');
});
test('true', function(){
expect(true).to.be.true;
expect(false).to.not.be.true;
expect(1).to.not.be.true;
err(function(){
expect('test').to.be.true;
}, "expected 'test' to be true")
});
test('ok', function(){
expect(true).to.be.ok;
expect(false).to.not.be.ok;
expect(1).to.be.ok;
expect(0).to.not.be.ok;
err(function(){
expect('').to.be.ok;
}, "expected '' to be truthy");
err(function(){
expect('test').to.not.be.ok;
}, "expected 'test' to be falsy");
});
test('false', function(){
expect(false).to.be.false;
expect(true).to.not.be.false;
expect(0).to.not.be.false;
err(function(){
expect('').to.be.false;
}, "expected '' to be false")
});
test('null', function(){
expect(null).to.be.null;
expect(false).to.not.be.null;
err(function(){
expect('').to.be.null;
}, "expected '' to be null")
});
test('undefined', function(){
expect(undefined).to.be.undefined;
expect(null).to.not.be.undefined;
err(function(){
expect('').to.be.undefined;
}, "expected '' to be undefined")
});
test('exist', function(){
var foo = 'bar'
, bar;
expect(foo).to.exist;
expect(bar).to.not.exist;
});
test('arguments', function(){
var args = (function(){ return arguments; })(1,2,3);
expect(args).to.be.arguments;
expect([]).to.not.be.arguments;
expect(args).to.be.an('arguments').and.be.arguments;
expect([]).to.be.an('array').and.not.be.Arguments;
});
test('.equal()', function(){
var foo;
expect(undefined).to.equal(foo);
});
test('typeof', function(){
expect('test').to.be.a('string');
err(function(){
expect('test').to.not.be.a('string');
}, "expected 'test' not to be a string");
expect(5).to.be.a('number');
expect(new Number(1)).to.be.a('number');
expect(Number(1)).to.be.a('number');
expect(true).to.be.a('boolean');
expect(new Array()).to.be.a('array');
expect(new Object()).to.be.a('object');
expect({}).to.be.a('object');
expect([]).to.be.a('array');
expect(function() {}).to.be.a('function');
err(function(){
expect(5).to.not.be.a('number', 'blah');
}, "blah: expected 5 not to be a number");
});
test('instanceof', function(){
function Foo(){}
expect(new Foo()).to.be.an.instanceof(Foo);
err(function(){
expect(3).to.an.instanceof(Foo, 'blah');
}, "blah: expected 3 to be an instance of Foo");
});
test('within(start, finish)', function(){
expect(5).to.be.within(5, 10);
expect(5).to.be.within(3,6);
expect(5).to.be.within(3,5);
expect(5).to.not.be.within(1,3);
expect('foo').to.have.length.within(2,4);
expect([ 1, 2, 3 ]).to.have.length.within(2,4);
err(function(){
expect(5).to.not.be.within(4,6, 'blah');
}, "blah: expected 5 to not be within 4..6", 'blah');
err(function(){
expect(10).to.be.within(50,100, 'blah');
}, "blah: expected 10 to be within 50..100");
err(function () {
expect('foo').to.have.length.within(5,7, 'blah');
}, "blah: expected \'foo\' to have a length within 5..7");
err(function () {
expect([ 1, 2, 3 ]).to.have.length.within(5,7, 'blah');
}, "blah: expected [ 1, 2, 3 ] to have a length within 5..7");
});
test('above(n)', function(){
expect(5).to.be.above(2);
expect(5).to.be.greaterThan(2);
expect(5).to.not.be.above(5);
expect(5).to.not.be.above(6);
expect('foo').to.have.length.above(2);
expect([ 1, 2, 3 ]).to.have.length.above(2);
err(function(){
expect(5).to.be.above(6, 'blah');
}, "blah: expected 5 to be above 6", 'blah');
err(function(){
expect(10).to.not.be.above(6, 'blah');
}, "blah: expected 10 to be below 6");
err(function () {
expect('foo').to.have.length.above(4, 'blah');
}, "blah: expected \'foo\' to have a length above 4 but got 3");
err(function () {
expect([ 1, 2, 3 ]).to.have.length.above(4, 'blah');
}, "blah: expected [ 1, 2, 3 ] to have a length above 4 but got 3");
});
test('below(n)', function(){
expect(2).to.be.below(5);
expect(2).to.be.lessThan(5);
expect(2).to.not.be.below(2);
expect(2).to.not.be.below(1);
expect('foo').to.have.length.below(4);
expect([ 1, 2, 3 ]).to.have.length.below(4);
err(function(){
expect(6).to.be.below(5, 'blah');
}, "blah: expected 6 to be below 5");
err(function(){
expect(6).to.not.be.below(10, 'blah');
}, "blah: expected 6 to be above 10");
err(function () {
expect('foo').to.have.length.below(2, 'blah');
}, "blah: expected \'foo\' to have a length below 2 but got 3");
err(function () {
expect([ 1, 2, 3 ]).to.have.length.below(2, 'blah');
}, "blah: expected [ 1, 2, 3 ] to have a length below 2 but got 3");
});
test('match(regexp)', function(){
expect('foobar').to.match(/^foo/)
expect('foobar').to.not.match(/^bar/)
err(function(){
expect('foobar').to.match(/^bar/i, 'blah')
}, "blah: expected 'foobar' to match /^bar/i");
err(function(){
expect('foobar').to.not.match(/^foo/i, 'blah')
}, "blah: expected 'foobar' not to match /^foo/i");
});
test('length(n)', function(){
expect('test').to.have.length(4);
expect('test').to.not.have.length(3);
expect([1,2,3]).to.have.length(3);
err(function(){
expect(4).to.have.length(3, 'blah');
}, 'blah: expected 4 to have a property \'length\'');
err(function(){
expect('asd').to.not.have.length(3, 'blah');
}, "blah: expected 'asd' to not have a length of 3");
});
test('eql(val)', function(){
expect('test').to.eql('test');
expect({ foo: 'bar' }).to.eql({ foo: 'bar' });
expect(1).to.eql(1);
expect('4').to.not.eql(4);
err(function(){
expect(4).to.eql(3, 'blah');
}, 'blah: expected 4 to deeply equal 3');
});
test('equal(val)', function(){
expect('test').to.equal('test');
expect(1).to.equal(1);
err(function(){
expect(4).to.equal(3, 'blah');
}, 'blah: expected 4 to equal 3');
err(function(){
expect('4').to.equal(4, 'blah');
}, "blah: expected '4' to equal 4");
});
test('deep.equal(val)', function(){
expect({ foo: 'bar' }).to.deep.equal({ foo: 'bar' });
expect({ foo: 'bar' }).not.to.deep.equal({ foo: 'baz' });
});
test('empty', function(){
function FakeArgs() {};
FakeArgs.prototype.length = 0;
expect('').to.be.empty;
expect('foo').not.to.be.empty;
expect([]).to.be.empty;
expect(['foo']).not.to.be.empty;
expect(new FakeArgs).to.be.empty;
expect({arguments: 0}).not.to.be.empty;
expect({}).to.be.empty;
expect({foo: 'bar'}).not.to.be.empty;
err(function(){
expect('').not.to.be.empty;
}, "expected \'\' not to be empty");
err(function(){
expect('foo').to.be.empty;
}, "expected \'foo\' to be empty");
err(function(){
expect([]).not.to.be.empty;
}, "expected [] not to be empty");
err(function(){
expect(['foo']).to.be.empty;
}, "expected [ \'foo\' ] to be empty");
err(function(){
expect(new FakeArgs).not.to.be.empty;
}, "expected {} not to be empty");
err(function(){
expect({arguments: 0}).to.be.empty;
}, "expected { arguments: 0 } to be empty");
err(function(){
expect({}).not.to.be.empty;
}, "expected {} not to be empty");
err(function(){
expect({foo: 'bar'}).to.be.empty;
}, "expected { foo: \'bar\' } to be empty");
});
test('property(name)', function(){
expect('test').to.have.property('length');
expect(4).to.not.have.property('length');
expect({ 'foo.bar': 'baz' })
.to.have.property('foo.bar');
expect({ foo: { bar: 'baz' } })
.to.not.have.property('foo.bar');
err(function(){
expect('asd').to.have.property('foo');
}, "expected 'asd' to have a property 'foo'");
err(function(){
expect({ foo: { bar: 'baz' } })
.to.have.property('foo.bar');
}, "expected { foo: { bar: 'baz' } } to have a property 'foo.bar'");
});
test('deep.property(name)', function(){
expect({ 'foo.bar': 'baz'})
.to.not.have.deep.property('foo.bar');
expect({ foo: { bar: 'baz' } })
.to.have.deep.property('foo.bar');
err(function(){
expect({ 'foo.bar': 'baz' })
.to.have.deep.property('foo.bar');
}, "expected { 'foo.bar': 'baz' } to have a deep property 'foo.bar'");
});
test('property(name, val)', function(){
expect('test').to.have.property('length', 4);
expect('asd').to.have.property('constructor', String);
err(function(){
expect('asd').to.have.property('length', 4, 'blah');
}, "blah: expected 'asd' to have a property 'length' of 4, but got 3");
err(function(){
expect('asd').to.not.have.property('length', 3, 'blah');
}, "blah: expected 'asd' to not have a property 'length' of 3");
err(function(){
expect('asd').to.not.have.property('foo', 3, 'blah');
}, "blah: 'asd' has no property 'foo'");
err(function(){
expect('asd').to.have.property('constructor', Number, 'blah');
}, "blah: expected 'asd' to have a property 'constructor' of [Function: Number], but got [Function: String]");
});
test('deep.property(name, val)', function(){
expect({ foo: { bar: 'baz' } })
.to.have.deep.property('foo.bar', 'baz');
err(function(){
expect({ foo: { bar: 'baz' } })
.to.have.deep.property('foo.bar', 'quux', 'blah');
}, "blah: expected { foo: { bar: 'baz' } } to have a deep property 'foo.bar' of 'quux', but got 'baz'");
err(function(){
expect({ foo: { bar: 'baz' } })
.to.not.have.deep.property('foo.bar', 'baz', 'blah');
}, "blah: expected { foo: { bar: 'baz' } } to not have a deep property 'foo.bar' of 'baz'");
err(function(){
expect({ foo: 5 })
.to.not.have.deep.property('foo.bar', 'baz', 'blah');
}, "blah: { foo: 5 } has no deep property 'foo.bar'");
});
test('ownProperty(name)', function(){
expect('test').to.have.ownProperty('length');
expect('test').to.haveOwnProperty('length');
expect({ length: 12 }).to.have.ownProperty('length');
err(function(){
expect({ length: 12 }).to.not.have.ownProperty('length', 'blah');
}, "blah: expected { length: 12 } to not have own property 'length'");
});
test('string()', function(){
expect('foobar').to.have.string('bar');
expect('foobar').to.have.string('foo');
expect('foobar').to.not.have.string('baz');
err(function(){
expect(3).to.have.string('baz');
}, "expected 3 to be a string");
err(function(){
expect('foobar').to.have.string('baz', 'blah');
}, "blah: expected 'foobar' to contain 'baz'");
err(function(){
expect('foobar').to.not.have.string('bar', 'blah');
}, "blah: expected 'foobar' to not contain 'bar'");
});
test('include()', function(){
expect(['foo', 'bar']).to.include('foo');
expect(['foo', 'bar']).to.include('foo');
expect(['foo', 'bar']).to.include('bar');
expect([1,2]).to.include(1);
expect(['foo', 'bar']).to.not.include('baz');
expect(['foo', 'bar']).to.not.include(1);
err(function(){
expect(['foo']).to.include('bar', 'blah');
}, "blah: expected [ 'foo' ] to include 'bar'");
err(function(){
expect(['bar', 'foo']).to.not.include('foo', 'blah');
}, "blah: expected [ 'bar', 'foo' ] to not include 'foo'");
});
test('keys(array)', function(){
expect({ foo: 1 }).to.have.keys(['foo']);
expect({ foo: 1, bar: 2 }).to.have.keys(['foo', 'bar']);
expect({ foo: 1, bar: 2 }).to.have.keys('foo', 'bar');
expect({ foo: 1, bar: 2, baz: 3 }).to.contain.keys('foo', 'bar');
expect({ foo: 1, bar: 2, baz: 3 }).to.contain.keys('bar', 'foo');
expect({ foo: 1, bar: 2, baz: 3 }).to.contain.keys('baz');
expect({ foo: 1, bar: 2 }).to.contain.keys('foo');
expect({ foo: 1, bar: 2 }).to.contain.keys('bar', 'foo');
expect({ foo: 1, bar: 2 }).to.contain.keys(['foo']);
expect({ foo: 1, bar: 2 }).to.contain.keys(['bar']);
expect({ foo: 1, bar: 2 }).to.contain.keys(['bar', 'foo']);
expect({ foo: 1, bar: 2 }).to.not.have.keys('baz');
expect({ foo: 1, bar: 2 }).to.not.have.keys('foo', 'baz');
expect({ foo: 1, bar: 2 }).to.not.contain.keys('baz');
expect({ foo: 1, bar: 2 }).to.not.contain.keys('foo', 'baz');
expect({ foo: 1, bar: 2 }).to.not.contain.keys('baz', 'foo');
err(function(){
expect({ foo: 1 }).to.have.keys();
}, "keys required");
err(function(){
expect({ foo: 1 }).to.have.keys([]);
}, "keys required");
err(function(){
expect({ foo: 1 }).to.not.have.keys([]);
}, "keys required");
err(function(){
expect({ foo: 1 }).to.contain.keys([]);
}, "keys required");
err(function(){
expect({ foo: 1 }).to.have.keys(['bar']);
}, "expected { foo: 1 } to have key 'bar'");
err(function(){
expect({ foo: 1 }).to.have.keys(['bar', 'baz']);
}, "expected { foo: 1 } to have keys 'bar', and 'baz'");
err(function(){
expect({ foo: 1 }).to.have.keys(['foo', 'bar', 'baz']);
}, "expected { foo: 1 } to have keys 'foo', 'bar', and 'baz'");
err(function(){
expect({ foo: 1 }).to.not.have.keys(['foo']);
}, "expected { foo: 1 } to not have key 'foo'");
err(function(){
expect({ foo: 1 }).to.not.have.keys(['foo']);
}, "expected { foo: 1 } to not have key 'foo'");
err(function(){
expect({ foo: 1, bar: 2 }).to.not.have.keys(['foo', 'bar']);
}, "expected { foo: 1, bar: 2 } to not have keys 'foo', and 'bar'");
err(function(){
expect({ foo: 1 }).to.not.contain.keys(['foo']);
}, "expected { foo: 1 } to not contain key 'foo'");
err(function(){
expect({ foo: 1 }).to.contain.keys('foo', 'bar');
}, "expected { foo: 1 } to contain keys 'foo', and 'bar'");
});
test('chaining', function(){
var tea = { name: 'chai', extras: ['milk', 'sugar', 'smile'] };
expect(tea).to.have.property('extras').with.lengthOf(3);
err(function(){
expect(tea).to.have.property('extras').with.lengthOf(4);
}, "expected [ 'milk', 'sugar', 'smile' ] to have a length of 4 but got 3");
expect(tea).to.be.a('object').and.have.property('name', 'chai');
});
test('throw', function () {
// See GH-45: some poorly-constructed custom errors don't have useful names
// on either their constructor or their constructor prototype, but instead
// only set the name inside the constructor itself.
var PoorlyConstructedError = function () {
this.name = 'PoorlyConstructedError';
};
PoorlyConstructedError.prototype = Object.create(Error.prototype);
var specificError = new RangeError('boo');
var goodFn = function () { 1==1; }
, badFn = function () { throw new Error('testing'); }
, refErrFn = function () { throw new ReferenceError('hello'); }
, ickyErrFn = function () { throw new PoorlyConstructedError(); }
, specificErrFn = function () { throw specificError; };
expect(goodFn).to.not.throw();
expect(goodFn).to.not.throw(Error);
expect(goodFn).to.not.throw(specificError);
expect(badFn).to.throw();
expect(badFn).to.throw(Error);
expect(badFn).to.not.throw(ReferenceError);
expect(badFn).to.not.throw(specificError);
expect(refErrFn).to.throw();
expect(refErrFn).to.throw(ReferenceError);
expect(refErrFn).to.throw(Error);
expect(refErrFn).to.not.throw(TypeError);
expect(refErrFn).to.not.throw(specificError);
expect(ickyErrFn).to.throw();
expect(ickyErrFn).to.throw(PoorlyConstructedError);
expect(ickyErrFn).to.throw(Error);
expect(ickyErrFn).to.not.throw(specificError);
expect(specificErrFn).to.throw(specificError);
expect(badFn).to.throw(/testing/);
expect(badFn).to.not.throw(/hello/);
expect(badFn).to.throw('testing');
expect(badFn).to.not.throw('hello');
expect(badFn).to.throw(Error, /testing/);
expect(badFn).to.throw(Error, 'testing');
err(function(){
expect(goodFn).to.throw();
}, "expected [Function] to throw an error");
err(function(){
expect(goodFn).to.throw(ReferenceError);
}, "expected [Function] to throw ReferenceError");
err(function(){
expect(goodFn).to.throw(specificError);
}, "expected [Function] to throw [RangeError: boo]");
err(function(){
expect(badFn).to.not.throw();
}, "expected [Function] to not throw an error but [Error: testing] was thrown");
err(function(){
expect(badFn).to.throw(ReferenceError);
}, "expected [Function] to throw ReferenceError but [Error: testing] was thrown");
err(function(){
expect(badFn).to.throw(specificError);
}, "expected [Function] to throw [RangeError: boo] but [Error: testing] was thrown");
err(function(){
expect(badFn).to.not.throw(Error);
}, "expected [Function] to not throw Error but [Error: testing] was thrown");
err(function(){
expect(refErrFn).to.not.throw(ReferenceError);
}, "expected [Function] to not throw ReferenceError but [ReferenceError: hello] was thrown");
err(function(){
expect(badFn).to.throw(PoorlyConstructedError);
}, "expected [Function] to throw PoorlyConstructedError but [Error: testing] was thrown");
err(function(){
expect(ickyErrFn).to.not.throw(PoorlyConstructedError);
}, "expected [Function] to not throw PoorlyConstructedError but { name: 'PoorlyConstructedError' } was thrown");
err(function(){
expect(ickyErrFn).to.throw(ReferenceError);
}, "expected [Function] to throw ReferenceError but { name: 'PoorlyConstructedError' } was thrown");
err(function(){
expect(specificErrFn).to.throw(new ReferenceError('eek'));
}, "expected [Function] to throw [ReferenceError: eek] but [RangeError: boo] was thrown");
err(function(){
expect(specificErrFn).to.not.throw(specificError);
}, "expected [Function] to not throw [RangeError: boo]");
err(function (){
expect(badFn).to.not.throw(/testing/);
}, "expected [Function] to throw error not matching /testing/");
err(function () {
expect(badFn).to.throw(/hello/);
}, "expected [Function] to throw error matching /hello/ but got \'testing\'");
err(function () {
expect(badFn).to.throw(Error, /hello/, 'blah');
}, "blah: expected [Function] to throw error matching /hello/ but got 'testing'");
err(function () {
expect(badFn).to.throw(Error, 'hello', 'blah');
}, "blah: expected [Function] to throw error including 'hello' but got 'testing'");
});
test('respondTo', function(){
function Foo(){};
Foo.prototype.bar = function(){};
Foo.func = function() {};
var bar = {};
bar.foo = function(){};
expect(Foo).to.respondTo('bar');
expect(Foo).to.not.respondTo('foo');
expect(Foo).itself.to.respondTo('func');
expect(Foo).itself.not.to.respondTo('bar');
expect(bar).to.respondTo('foo');
err(function(){
expect(Foo).to.respondTo('baz', 'blah');
}, "blah: expected { [Function: Foo] func: [Function] } to respond to \'baz\'");
err(function(){
expect(bar).to.respondTo('baz', 'blah');
}, "blah: expected { foo: [Function] } to respond to \'baz\'");
});
test('satisfy', function(){
var matcher = function(num){
return num === 1;
};
expect(1).to.satisfy(matcher);
err(function(){
expect(2).to.satisfy(matcher, 'blah');
}, "blah: expected 2 to satisfy [Function]");
});
test('closeTo', function(){
expect(1.5).to.be.closeTo(1.0, 0.5);
expect(10).to.be.closeTo(20, 20);
expect(-10).to.be.closeTo(20, 30);
err(function(){
expect(2).to.be.closeTo(1.0, 0.5, 'blah');
}, "blah: expected 2 to be close to 1 +/- 0.5");
err(function(){
expect(-10).to.be.closeTo(20, 29, 'blah');
}, "blah: expected -10 to be close to 20 +/- 29");
});
});