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Contents
##
# spec/lib/skn_utils/null_object_spec.rb
#
# Create a bean from that base
class TestBean < SknUtils::NotifierBase
attribute :name, :firstname
end
class LoggingPropertyChangeListener
def attribute_changed(attribute, old_value, new_value)
print attribute, " changed from ",
old_value, " to ",
new_value, "\n"
end
end
class SimpleBean < SknUtils::NotifierBase
attribute :name, :firstname
def impotent_name=(new_name)
@name = new_name
end
end
RSpec.describe SknUtils::NotifierBase, "Notify feature example for Ruby " do
let(:test_obj) { TestBean.new }
let(:simple_obj) { SimpleBean.new }
let(:listener) { LoggingPropertyChangeListener.new }
context "Basic Operations" do
it "Initializes without params" do
expect(subject).to be
end
it "Can be Inherited." do
expect(test_obj).to be
end
end
context "Notify Operations" do
it "#register_listener registers listeners." do
expect(test_obj.register_listener(listener)).to include(listener)
end
it "#unregister_listener removes listener." do
test_obj.register_listener(listener)
expect(test_obj.unregister_listener(listener)).to eq(listener)
end
it "notifies listeners of changes when attribute writer is used." do
test_obj.register_listener(listener)
expect(listener).to receive(:attribute_changed).with(:name, nil, 'James Scott')
test_obj.name = 'James Scott'
end
it "does not notify listeners when attribute writer is not used." do
simple_obj.register_listener(listener)
expect(listener).not_to receive(:attribute_changed)
simple_obj.impotent_name = 'James Scott'
expect(simple_obj.name).to eq('James Scott')
end
end
end
Version data entries
46 entries across 46 versions & 1 rubygems