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require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
describe "Observer#notify_observers" do
before :each do
@observable = ObservableSpecs.new
@observer = ObserverCallbackSpecs.new
@observable.add_observer(@observer)
end
it "must call changed before notifying observers" do
@observer.value.should == nil
@observable.notify_observers("test")
@observer.value.should == nil
end
it "verifies observer responds to update" do
lambda {
@observable.add_observer(@observable)
}.should raise_error(NoMethodError)
end
it "receives the callback" do
@observer.value.should == nil
@observable.changed
@observable.notify_observers("test")
@observer.value.should == "test"
end
end
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