120 lines
3.4 KiB
Ruby
120 lines
3.4 KiB
Ruby
require File.join(File.dirname(__FILE__), 'spec_helper')
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class ObservedModel < ActiveModel::Base
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class Observer
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end
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end
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class FooObserver < ActiveModel::Observer
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class << self
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public :new
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end
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attr_accessor :stub
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def on_spec(record)
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stub.event_with(record) if stub
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end
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end
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class Foo < ActiveModel::Base
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end
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module ActiveModel
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describe Observing do
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before do
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ObservedModel.observers.clear
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end
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it "initializes model with no cached observers" do
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ObservedModel.observers.should be_empty
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end
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it "stores cached observers in an array" do
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ObservedModel.observers << :foo
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ObservedModel.observers.should include(:foo)
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end
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it "flattens array of assigned cached observers" do
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ObservedModel.observers = [[:foo], :bar]
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ObservedModel.observers.should include(:foo)
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ObservedModel.observers.should include(:bar)
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end
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it "instantiates observer names passed as strings" do
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ObservedModel.observers << 'foo_observer'
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FooObserver.should_receive(:instance)
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ObservedModel.instantiate_observers
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end
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it "instantiates observer names passed as symbols" do
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ObservedModel.observers << :foo_observer
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FooObserver.should_receive(:instance)
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ObservedModel.instantiate_observers
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end
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it "instantiates observer classes" do
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ObservedModel.observers << ObservedModel::Observer
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ObservedModel::Observer.should_receive(:instance)
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ObservedModel.instantiate_observers
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end
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it "should pass observers to subclasses" do
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FooObserver.instance
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bar = Class.new(Foo)
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bar.count_observers.should == 1
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end
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end
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describe Observer do
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before do
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ObservedModel.observers = :foo_observer
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FooObserver.models = nil
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end
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it "guesses implicit observable model name" do
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FooObserver.observed_class_name.should == 'Foo'
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end
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it "tracks implicit observable models" do
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instance = FooObserver.new
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instance.send(:observed_classes).should include(Foo)
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instance.send(:observed_classes).should_not include(ObservedModel)
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end
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it "tracks explicit observed model class" do
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FooObserver.new.send(:observed_classes).should_not include(ObservedModel)
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FooObserver.observe ObservedModel
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instance = FooObserver.new
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instance.send(:observed_classes).should include(ObservedModel)
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end
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it "tracks explicit observed model as string" do
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FooObserver.new.send(:observed_classes).should_not include(ObservedModel)
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FooObserver.observe 'observed_model'
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instance = FooObserver.new
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instance.send(:observed_classes).should include(ObservedModel)
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end
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it "tracks explicit observed model as symbol" do
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FooObserver.new.send(:observed_classes).should_not include(ObservedModel)
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FooObserver.observe :observed_model
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instance = FooObserver.new
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instance.send(:observed_classes).should include(ObservedModel)
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end
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it "calls existing observer event" do
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foo = Foo.new
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FooObserver.instance.stub = stub!(:stub)
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FooObserver.instance.stub.should_receive(:event_with).with(foo)
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Foo.send(:changed)
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Foo.send(:notify_observers, :on_spec, foo)
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end
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it "skips nonexistent observer event" do
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foo = Foo.new
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Foo.send(:changed)
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Foo.send(:notify_observers, :whatever, foo)
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end
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end
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end |