| 1 | expect = require('chai').expect
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| 2 |
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| 3 | Binder = require('binder')
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| 4 |
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| 5 |
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| 6 | class Parent
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| 7 | name: 'Parent'
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| 8 |
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| 9 | class Child1 extends Parent
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| 10 | name: 'Child1'
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| 11 |
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| 12 | class Child2 extends Parent
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| 13 | name: 'Child2'
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| 14 |
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| 15 | class GrandChild extends Child1
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| 16 | name: 'GrandChild'
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| 17 |
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| 18 | class Singleton
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| 19 | @scope: 'SINGLETON'
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| 20 |
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| 21 | class InvalidScope
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| 22 | @scope: 'Entirely Invalid'
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| 23 |
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| 24 |
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| 25 | describe 'A binder', ->
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| 26 |
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| 27 | it 'should create bindings', ->
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| 28 | class MyBinder extends Binder
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| 29 | configure: ->
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| 30 | @bind(Parent).to(Child1)
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| 31 | @bind(Child1).to(GrandChild)
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| 32 |
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| 33 | binder = new MyBinder()
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| 34 | expect(binder.bindings).to.have.length 2
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| 35 |
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| 36 | it 'should throw an exception when re-binding', ->
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| 37 | class Rebinder extends Binder
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| 38 | configure: ->
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| 39 | @bind(Parent).to(Child1).to(Child2)
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| 40 | create = -> new Rebinder()
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| 41 | expect(create).to.throw /Already bound/
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| 42 |
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| 43 | it 'should bind a class in a scope', ->
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| 44 | class Scoped extends Binder
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| 45 | configure: ->
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| 46 | @bind(Child1).inScope('singleton')
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| 47 |
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| 48 | binding = new Scoped().bindings[0]
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| 49 | expect(binding.iface).to.equal Child1
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| 50 | expect(binding.scope).to.equal 'SINGLETON'
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| 51 |
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| 52 | it 'should throw an error when binding to an invalid scope', ->
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| 53 | class InvalidScoped extends Binder
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| 54 | configure: ->
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| 55 | @bind(Parent).inScope('pant suit')
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| 56 | create = -> new InvalidScoped()
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| 57 | expect(create).to.throw /Invalid scope, 'pant suit'/
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| 58 |
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| 59 | it 'should not bind an instance with invalid scope', ->
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| 60 | class BadScope extends Binder
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| 61 | configure: ->
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| 62 | @bind(InvalidScope)
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| 63 | expect(InvalidScope.scope).to.equal 'Entirely Invalid'
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| 64 | create = -> new BadScope()
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| 65 | expect(create).to.throw /Invalid scope, 'Entirely Invalid'/
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| 66 |
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| 67 | it 'should throw an error when scoping something with a scope', ->
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| 68 | class Rescoper extends Binder
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| 69 | configure: ->
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| 70 | @bind(Singleton).inScope('INSTANCE')
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| 71 | create = -> new Rescoper()
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| 72 | expect(create).to.throw /Already scoped to SINGLETON/
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| 73 |
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| 74 | it 'should bind a constant', ->
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| 75 | class ConstantBinder extends Binder
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| 76 | configure: ->
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| 77 | @bindConstant('frank.age').to(22)
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| 78 |
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| 79 | binder = new ConstantBinder()
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| 80 | expect(binder.bindings).to.have.length 1
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