require 'abstract_unit' require 'test/unit' require 'active_support' module CallbacksTest class Record include ActiveSupport::Callbacks define_callbacks :save def self.before_save(*filters, &blk) set_callback(:save, :before, *filters, &blk) end def self.after_save(*filters, &blk) set_callback(:save, :after, *filters, &blk) end class << self def callback_symbol(callback_method) method_name = :"#{callback_method}_method" define_method(method_name) do history << [callback_method, :symbol] end method_name end def callback_string(callback_method) "history << [#{callback_method.to_sym.inspect}, :string]" end def callback_proc(callback_method) Proc.new { |model| model.history << [callback_method, :proc] } end def callback_object(callback_method) klass = Class.new klass.send(:define_method, callback_method) do |model| model.history << [:"#{callback_method}_save", :object] end klass.new end end def history @history ||= [] end end class Person < Record [:before_save, :after_save].each do |callback_method| callback_method_sym = callback_method.to_sym send(callback_method, callback_symbol(callback_method_sym)) send(callback_method, callback_string(callback_method_sym)) send(callback_method, callback_proc(callback_method_sym)) send(callback_method, callback_object(callback_method_sym.to_s.gsub(/_save/, ''))) send(callback_method) { |model| model.history << [callback_method_sym, :block] } end def save run_callbacks :save end end class PersonSkipper < Person skip_callback :save, :before, :before_save_method, :if => :yes skip_callback :save, :after, :before_save_method, :unless => :yes skip_callback :save, :after, :before_save_method, :if => :no skip_callback :save, :before, :before_save_method, :unless => :no def yes; true; end def no; false; end end class ParentController include ActiveSupport::Callbacks define_callbacks :dispatch set_callback :dispatch, :before, :log, :per_key => {:unless => proc {|c| c.action_name == :index || c.action_name == :show }} set_callback :dispatch, :after, :log2 attr_reader :action_name, :logger def initialize(action_name) @action_name, @logger = action_name, [] end def log @logger << action_name end def log2 @logger << action_name end def dispatch run_callbacks :dispatch, action_name do @logger << "Done" end self end end class Child < ParentController skip_callback :dispatch, :before, :log, :per_key => {:if => proc {|c| c.action_name == :update} } skip_callback :dispatch, :after, :log2 end class OneTimeCompile < Record @@starts_true, @@starts_false = true, false def initialize super end before_save Proc.new {|r| r.history << [:before_save, :starts_true, :if] }, :per_key => {:if => :starts_true} before_save Proc.new {|r| r.history << [:before_save, :starts_false, :if] }, :per_key => {:if => :starts_false} before_save Proc.new {|r| r.history << [:before_save, :starts_true, :unless] }, :per_key => {:unless => :starts_true} before_save Proc.new {|r| r.history << [:before_save, :starts_false, :unless] }, :per_key => {:unless => :starts_false} def starts_true if @@starts_true @@starts_true = false return true end @@starts_true end def starts_false unless @@starts_false @@starts_false = true return false end @@starts_false end def save run_callbacks :save, :action end end class OneTimeCompileTest < Test::Unit::TestCase def test_optimized_first_compile around = OneTimeCompile.new around.save assert_equal [ [:before_save, :starts_true, :if], [:before_save, :starts_true, :unless] ], around.history end end class ConditionalPerson < Record # proc before_save Proc.new { |r| r.history << [:before_save, :proc] }, :if => Proc.new { |r| true } before_save Proc.new { |r| r.history << "b00m" }, :if => Proc.new { |r| false } before_save Proc.new { |r| r.history << [:before_save, :proc] }, :unless => Proc.new { |r| false } before_save Proc.new { |r| r.history << "b00m" }, :unless => Proc.new { |r| true } # symbol before_save Proc.new { |r| r.history << [:before_save, :symbol] }, :if => :yes before_save Proc.new { |r| r.history << "b00m" }, :if => :no before_save Proc.new { |r| r.history << [:before_save, :symbol] }, :unless => :no before_save Proc.new { |r| r.history << "b00m" }, :unless => :yes # string before_save Proc.new { |r| r.history << [:before_save, :string] }, :if => 'yes' before_save Proc.new { |r| r.history << "b00m" }, :if => 'no' before_save Proc.new { |r| r.history << [:before_save, :string] }, :unless => 'no' before_save Proc.new { |r| r.history << "b00m" }, :unless => 'yes' # Combined if and unless before_save Proc.new { |r| r.history << [:before_save, :combined_symbol] }, :if => :yes, :unless => :no before_save Proc.new { |r| r.history << "b00m" }, :if => :yes, :unless => :yes def yes; true; end def other_yes; true; end def no; false; end def other_no; false; end def save run_callbacks :save end end class CleanPerson < ConditionalPerson reset_callbacks :save end class MySuper include ActiveSupport::Callbacks define_callbacks :save end class AroundPerson < MySuper attr_reader :history set_callback :save, :before, :nope, :if => :no set_callback :save, :before, :nope, :unless => :yes set_callback :save, :after, :tweedle set_callback :save, :before, "tweedle_dee" set_callback :save, :before, proc {|m| m.history << "yup" } set_callback :save, :before, :nope, :if => proc { false } set_callback :save, :before, :nope, :unless => proc { true } set_callback :save, :before, :yup, :if => proc { true } set_callback :save, :before, :yup, :unless => proc { false } set_callback :save, :around, :tweedle_dum set_callback :save, :around, :w0tyes, :if => :yes set_callback :save, :around, :w0tno, :if => :no set_callback :save, :around, :tweedle_deedle def no; false; end def yes; true; end def nope @history << "boom" end def yup @history << "yup" end def w0tyes @history << "w0tyes before" yield @history << "w0tyes after" end def w0tno @history << "boom" yield end def tweedle_dee @history << "tweedle dee" end def tweedle_dum @history << "tweedle dum pre" yield @history << "tweedle dum post" end def tweedle @history << "tweedle" end def tweedle_deedle @history << "tweedle deedle pre" yield @history << "tweedle deedle post" end def initialize @history = [] end def save run_callbacks :save do @history << "running" end end end class HyphenatedCallbacks include ActiveSupport::Callbacks define_callbacks :save attr_reader :stuff set_callback :save, :before, :action, :per_key => {:if => :yes} def yes() true end def action @stuff = "ACTION" end def save run_callbacks :save, "hyphen-ated" do @stuff end end end class AroundCallbacksTest < Test::Unit::TestCase def test_save_around around = AroundPerson.new around.save assert_equal [ "tweedle dee", "yup", "yup", "tweedle dum pre", "w0tyes before", "tweedle deedle pre", "running", "tweedle deedle post", "w0tyes after", "tweedle dum post", "tweedle" ], around.history end end class SkipCallbacksTest < Test::Unit::TestCase def test_skip_person person = PersonSkipper.new assert_equal [], person.history person.save assert_equal [ [:before_save, :string], [:before_save, :proc], [:before_save, :object], [:before_save, :block], [:after_save, :block], [:after_save, :object], [:after_save, :proc], [:after_save, :string], [:after_save, :symbol] ], person.history end end class CallbacksTest < Test::Unit::TestCase def test_save_person person = Person.new assert_equal [], person.history person.save assert_equal [ [:before_save, :symbol], [:before_save, :string], [:before_save, :proc], [:before_save, :object], [:before_save, :block], [:after_save, :block], [:after_save, :object], [:after_save, :proc], [:after_save, :string], [:after_save, :symbol] ], person.history end end class ConditionalCallbackTest < Test::Unit::TestCase def test_save_conditional_person person = ConditionalPerson.new person.save assert_equal [ [:before_save, :proc], [:before_save, :proc], [:before_save, :symbol], [:before_save, :symbol], [:before_save, :string], [:before_save, :string], [:before_save, :combined_symbol], ], person.history end end class ResetCallbackTest < Test::Unit::TestCase def test_save_conditional_person person = CleanPerson.new person.save assert_equal [], person.history end end class CallbackTerminator include ActiveSupport::Callbacks define_callbacks :save, :terminator => "result == :halt" set_callback :save, :before, :first set_callback :save, :before, :second set_callback :save, :around, :around_it set_callback :save, :before, :third set_callback :save, :after, :first set_callback :save, :around, :around_it set_callback :save, :after, :second set_callback :save, :around, :around_it set_callback :save, :after, :third attr_reader :history, :saved def initialize @history = [] end def around_it @history << "around1" yield @history << "around2" end def first @history << "first" end def second @history << "second" :halt end def third @history << "third" end def save run_callbacks :save do @saved = true end end end class CallbackObject def before(caller) caller.record << "before" end def before_save(caller) caller.record << "before save" end def around(caller) caller.record << "around before" yield caller.record << "around after" end end class UsingObjectBefore include ActiveSupport::Callbacks define_callbacks :save set_callback :save, :before, CallbackObject.new attr_accessor :record def initialize @record = [] end def save run_callbacks :save do @record << "yielded" end end end class UsingObjectAround include ActiveSupport::Callbacks define_callbacks :save set_callback :save, :around, CallbackObject.new attr_accessor :record def initialize @record = [] end def save run_callbacks :save do @record << "yielded" end end end class CustomScopeObject include ActiveSupport::Callbacks define_callbacks :save, :scope => [:kind, :name] set_callback :save, :before, CallbackObject.new attr_accessor :record def initialize @record = [] end def save run_callbacks :save do @record << "yielded" "CallbackResult" end end end class UsingObjectTest < Test::Unit::TestCase def test_before_object u = UsingObjectBefore.new u.save assert_equal ["before", "yielded"], u.record end def test_around_object u = UsingObjectAround.new u.save assert_equal ["around before", "yielded", "around after"], u.record end def test_customized_object u = CustomScopeObject.new u.save assert_equal ["before save", "yielded"], u.record end def test_block_result_is_returned u = CustomScopeObject.new assert_equal "CallbackResult", u.save end end class CallbackTerminatorTest < Test::Unit::TestCase def test_termination terminator = CallbackTerminator.new terminator.save assert_equal ["first", "second", "third", "second", "first"], terminator.history end def test_block_never_called_if_terminated obj = CallbackTerminator.new obj.save assert !obj.saved end end class HyphenatedKeyTest < Test::Unit::TestCase def test_save obj = HyphenatedCallbacks.new obj.save assert_equal "ACTION", obj.stuff end end class WriterSkipper < Person attr_accessor :age skip_callback :save, :before, :before_save_method, :if => lambda {self.age > 21} end class WriterCallbacksTest < Test::Unit::TestCase def test_skip_writer writer = WriterSkipper.new writer.age = 18 assert_equal [], writer.history writer.save assert_equal [ [:before_save, :symbol], [:before_save, :string], [:before_save, :proc], [:before_save, :object], [:before_save, :block], [:after_save, :block], [:after_save, :object], [:after_save, :proc], [:after_save, :string], [:after_save, :symbol] ], writer.history end end end