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test.tracery.js
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test.tracery.js
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var chai = require('chai')
chai.should()
chai.use(require('chai-interface'))
describe('tracery', function () {
var tracery = require('../index')
it('has interface', function () {
tracery.should.be.a('function')
tracery.Collection.should.be.a('function')
})
it('returns a predicate asserting that an object matches a structure defined by builtins', function () {
var p = tracery({
a: String,
b: Number,
c: Boolean,
d: Function,
e: Object,
f: Array,
g: null
})
var obj = {
a: 'tofu',
b: 108,
c: true,
d: function () {},
e: {},
f: [],
g: null
}
p(obj).should.equal(true)
var obj2 = {
a: false,
b: obj2,
c: 12,
d: 1,
e: null
}
p(obj2).should.equal(false)
})
it('takes null as a type and a value', function () {
tracery({a: null})({a: undefined})
.should.equal(false)
tracery({a: null})({a: {}})
.should.equal(false)
tracery({a: null})({a: null})
.should.equal(true)
})
it('can match properties by predicate', function () {
var minLength10 = function (x) { return x.length >= 10 }
var p = tracery({
username: minLength10
})
p({username: '23423423423423423423'}).should.equal(true)
p({username: '2342'}).should.equal(false)
})
it('can match properties by regex', function () {
var isUpperCase = /^[A-Z]*$/
var p = tracery({
b: isUpperCase
})
p({
b: 'BAR'
}).should.equal(true)
p({
b: 'Bar'
}).should.equal(false)
})
it('supports deep object literal structure definitions', function () {
var p = tracery({
name: {
first: String,
last: String
},
emails: {
work: String,
home: String,
school: String
}
})
var user = {
name: {
first: 'Betty',
last: 'Dodson'
},
emails: {
work: 'b.dodson@megacorp.com',
home: 'butterflychica947@lol.com',
school: 'bdodso4@stateu.edu'
}
}
p(user).should.equal(true)
var user2 = {
name: {
firstName: 'Betty',
lastName: 'Dodson'
},
emails: {
work: 'b.dodson@megacorp.com',
school: 'bdodso4@stateu.edu'
}
}
p(user2).should.equal(false)
})
it('supports asserting typed arrays', function () {
var isArrOfStrs = tracery([String])
var t = ['a', 'b', 'c']
var f = ['a', 'b', 3]
isArrOfStrs(t).should.equal(true)
isArrOfStrs(f).should.equal(false)
})
it('should return false if a property is null or undefined', function () {
tracery({a: Boolean})().should.equal(false)
tracery({a: Boolean})(null).should.equal(false)
})
})