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123 lines
No EOL
4.1 KiB
Ruby
123 lines
No EOL
4.1 KiB
Ruby
require File.expand_path(File.join(File.dirname(__FILE__), 'test_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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class ObservingTest < ActiveModel::TestCase
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def setup
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ObservedModel.observers.clear
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end
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test "initializes model with no cached observers" do
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assert ObservedModel.observers.empty?, "Not empty: #{ObservedModel.observers.inspect}"
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end
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test "stores cached observers in an array" do
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ObservedModel.observers << :foo
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assert ObservedModel.observers.include?(:foo), ":foo not in #{ObservedModel.observers.inspect}"
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end
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test "flattens array of assigned cached observers" do
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ObservedModel.observers = [[:foo], :bar]
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assert ObservedModel.observers.include?(:foo), ":foo not in #{ObservedModel.observers.inspect}"
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assert ObservedModel.observers.include?(:bar), ":bar not in #{ObservedModel.observers.inspect}"
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end
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uses_mocha "observer instantiation" do
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test "instantiates observer names passed as strings" do
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ObservedModel.observers << 'foo_observer'
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FooObserver.expects(:instance)
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ObservedModel.instantiate_observers
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end
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test "instantiates observer names passed as symbols" do
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ObservedModel.observers << :foo_observer
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FooObserver.expects(:instance)
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ObservedModel.instantiate_observers
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end
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test "instantiates observer classes" do
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ObservedModel.observers << ObservedModel::Observer
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ObservedModel::Observer.expects(:instance)
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ObservedModel.instantiate_observers
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end
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end
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test "passes observers to subclasses" do
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FooObserver.instance
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bar = Class.new(Foo)
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assert_equal Foo.count_observers, bar.count_observers
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end
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end
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class ObserverTest < ActiveModel::TestCase
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def setup
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ObservedModel.observers = :foo_observer
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FooObserver.models = nil
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end
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test "guesses implicit observable model name" do
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assert_equal 'Foo', FooObserver.observed_class_name
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end
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test "tracks implicit observable models" do
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instance = FooObserver.new
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assert instance.send(:observed_classes).include?(Foo), "Foo not in #{instance.send(:observed_classes).inspect}"
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assert !instance.send(:observed_classes).include?(ObservedModel), "ObservedModel in #{instance.send(:observed_classes).inspect}"
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end
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test "tracks explicit observed model class" do
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old_instance = FooObserver.new
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assert !old_instance.send(:observed_classes).include?(ObservedModel), "ObservedModel in #{old_instance.send(:observed_classes).inspect}"
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FooObserver.observe ObservedModel
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instance = FooObserver.new
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assert instance.send(:observed_classes).include?(ObservedModel), "ObservedModel not in #{instance.send(:observed_classes).inspect}"
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end
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test "tracks explicit observed model as string" do
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old_instance = FooObserver.new
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assert !old_instance.send(:observed_classes).include?(ObservedModel), "ObservedModel in #{old_instance.send(:observed_classes).inspect}"
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FooObserver.observe 'observed_model'
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instance = FooObserver.new
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assert instance.send(:observed_classes).include?(ObservedModel), "ObservedModel not in #{instance.send(:observed_classes).inspect}"
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end
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test "tracks explicit observed model as symbol" do
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old_instance = FooObserver.new
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assert !old_instance.send(:observed_classes).include?(ObservedModel), "ObservedModel in #{old_instance.send(:observed_classes).inspect}"
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FooObserver.observe :observed_model
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instance = FooObserver.new
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assert instance.send(:observed_classes).include?(ObservedModel), "ObservedModel not in #{instance.send(:observed_classes).inspect}"
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end
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test "calls existing observer event" do
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foo = Foo.new
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FooObserver.instance.stub = stub
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FooObserver.instance.stub.expects(: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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test "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 |