diff options
Diffstat (limited to 'spec/rubyspec/library/observer')
6 files changed, 132 insertions, 0 deletions
diff --git a/spec/rubyspec/library/observer/add_observer_spec.rb b/spec/rubyspec/library/observer/add_observer_spec.rb new file mode 100644 index 0000000000..7a2d349c85 --- /dev/null +++ b/spec/rubyspec/library/observer/add_observer_spec.rb @@ -0,0 +1,23 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Observer#add_observer" do + + before :each do + @observable = ObservableSpecs.new + @observer = ObserverCallbackSpecs.new + end + + it "adds the observer" do + @observer.value.should == nil + @observable.changed + @observable.notify_observers("test") + @observer.value.should == nil + + @observable.add_observer(@observer) + @observable.changed + @observable.notify_observers("test2") + @observer.value.should == "test2" + end + +end diff --git a/spec/rubyspec/library/observer/count_observers_spec.rb b/spec/rubyspec/library/observer/count_observers_spec.rb new file mode 100644 index 0000000000..68eaccfaaa --- /dev/null +++ b/spec/rubyspec/library/observer/count_observers_spec.rb @@ -0,0 +1,23 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Observer#count_observers" do + before :each do + @observable = ObservableSpecs.new + @observer = ObserverCallbackSpecs.new + @observer2 = ObserverCallbackSpecs.new + end + + it "returns the number of observers" do + @observable.count_observers.should == 0 + @observable.add_observer(@observer) + @observable.count_observers.should == 1 + @observable.add_observer(@observer2) + @observable.count_observers.should == 2 + end + + it "returns the number of unique observers" do + 2.times { @observable.add_observer(@observer) } + @observable.count_observers.should == 1 + end +end diff --git a/spec/rubyspec/library/observer/delete_observer_spec.rb b/spec/rubyspec/library/observer/delete_observer_spec.rb new file mode 100644 index 0000000000..b9dc95167c --- /dev/null +++ b/spec/rubyspec/library/observer/delete_observer_spec.rb @@ -0,0 +1,19 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Observer#delete_observer" do + before :each do + @observable = ObservableSpecs.new + @observer = ObserverCallbackSpecs.new + end + + it "deletes the observer" do + @observable.add_observer(@observer) + @observable.delete_observer(@observer) + + @observable.changed + @observable.notify_observers("test") + @observer.value.should == nil + end + +end diff --git a/spec/rubyspec/library/observer/delete_observers_spec.rb b/spec/rubyspec/library/observer/delete_observers_spec.rb new file mode 100644 index 0000000000..58b10418dd --- /dev/null +++ b/spec/rubyspec/library/observer/delete_observers_spec.rb @@ -0,0 +1,19 @@ +require File.expand_path('../../../spec_helper', __FILE__) +require File.expand_path('../fixtures/classes', __FILE__) + +describe "Observer#delete_observers" do + before :each do + @observable = ObservableSpecs.new + @observer = ObserverCallbackSpecs.new + end + + it "deletes the observers" do + @observable.add_observer(@observer) + @observable.delete_observers + + @observable.changed + @observable.notify_observers("test") + @observer.value.should == nil + end + +end diff --git a/spec/rubyspec/library/observer/fixtures/classes.rb b/spec/rubyspec/library/observer/fixtures/classes.rb new file mode 100644 index 0000000000..70cd1b1be2 --- /dev/null +++ b/spec/rubyspec/library/observer/fixtures/classes.rb @@ -0,0 +1,17 @@ +require 'observer' + +class ObserverCallbackSpecs + attr_reader :value + + def initialize + @value = nil + end + + def update(value) + @value = value + end +end + +class ObservableSpecs + include Observable +end diff --git a/spec/rubyspec/library/observer/notify_observers_spec.rb b/spec/rubyspec/library/observer/notify_observers_spec.rb new file mode 100644 index 0000000000..cafbdd56e6 --- /dev/null +++ b/spec/rubyspec/library/observer/notify_observers_spec.rb @@ -0,0 +1,31 @@ +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 |