114 lines
3.5 KiB
Ruby
114 lines
3.5 KiB
Ruby
require_relative '../lib/decorates_before_rendering'
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class MyCompletelyFakeModelDecorator; end
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class MyOtherCompletelyFakeModelDecorator; end
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describe DecoratesBeforeRendering do
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# NOTE: these are married together, so they're tested together.
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describe '::decorates + #render' do
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let(:sentinel) { double(:sentinel) }
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let(:ivar) { double('@ivar') }
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let(:ivars) { double('@ivars') }
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# NOTE: This superclass is here so we know that the correct render gets
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# called. It can't be defined in the subclass, or else that one
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# will be the one that's used, as modules sit above their includers
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# in the class hierarchy.
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let(:superclass) do
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Class.new do
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def initialize(sentinel)
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@sentinel = sentinel
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end
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def render(*args)
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@sentinel.render(*args)
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end
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end
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end
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let(:klass) do
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Class.new(superclass) do
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include DecoratesBeforeRendering
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attr_reader :ivar, :ivars
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def initialize(sentinel, ivar, ivars = nil)
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super(sentinel)
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@ivar = ivar
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@ivars = ivars
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end
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end
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end
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let(:instance) { klass.new(sentinel, ivar, ivars) }
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let(:args) { double('*args') }
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context "no ivars" do
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it 'should render' do
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sentinel.should_receive(:render).with(args)
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instance.render(args)
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end
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end
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context "ivar is not present" do
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it 'should render' do
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sentinel.should_receive(:render).with(args)
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instance.render(args)
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end
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end
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context "cannot find model name for ivar" do
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it 'should raise an ArgumentError' do
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klass.decorates(:ivar)
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expect {
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instance.render(args)
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}.to raise_error(ArgumentError)
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end
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end
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context "ivar responds to model name" do
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it "should decorate and render" do
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sentinel.should_receive(:render).with(args)
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MyCompletelyFakeModelDecorator.should_receive(:decorate).with(ivar)
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ivar.stub(:model_name => 'MyCompletelyFakeModel')
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klass.decorates(:ivar)
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instance.render(args)
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end
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end
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context "ivar's class responds to model name" do
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it "should decorate and render" do
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sentinel.should_receive(:render).with(args)
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MyCompletelyFakeModelDecorator.should_receive(:decorate).with(ivar)
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ivar.stub_chain(:class, :model_name => 'MyCompletelyFakeModel')
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klass.decorates(:ivar)
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instance.render(args)
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end
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end
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context "subclass inherits attributes" do
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it "should function correctly" do
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klass.decorates(:ivar)
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subclass_instance = Class.new(klass).new(sentinel, ivar)
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sentinel.should_receive(:render).with(args)
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MyCompletelyFakeModelDecorator.should_receive(:decorate).with(ivar)
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ivar.stub_chain(:class, :model_name => 'MyCompletelyFakeModel')
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subclass_instance.render(args)
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end
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end
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context "Specify a different decorator class for an automatic decorator" do
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it "should function correctly" do
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klass.decorates(:ivars, :with => MyOtherCompletelyFakeModelDecorator)
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klass.decorates(:ivar)
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subclass_instance = Class.new(klass).new(sentinel, ivar, ivars)
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sentinel.should_receive(:render).with(args)
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MyOtherCompletelyFakeModelDecorator.should_receive(:decorate).with(ivars)
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MyCompletelyFakeModelDecorator.should_receive(:decorate).with(ivar)
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ivar.stub_chain(:class, :model_name => 'MyCompletelyFakeModel')
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subclass_instance.render(args)
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end
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end
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end
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end
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