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require 'abstract_unit'
require 'test/unit'
class GrandParent
include ActiveSupport::Callbacks
attr_reader :log, :action_name
def initialize(action_name)
@action_name, @log = action_name, []
end
define_callbacks :dispatch
set_callback :dispatch, :before, :before1, :before2, :per_key => {:if => proc {|c| c.action_name == "index" || c.action_name == "update" }}
set_callback :dispatch, :after, :after1, :after2, :per_key => {:if => proc {|c| c.action_name == "update" || c.action_name == "delete" }}
def before1
@log << "before1"
end
def before2
@log << "before2"
end
def after1
@log << "after1"
end
def after2
@log << "after2"
end
def dispatch
run_callbacks(:dispatch, action_name) do
@log << action_name
end
self
end
end
class Parent < GrandParent
skip_callback :dispatch, :before, :before2, :per_key => {:unless => proc {|c| c.action_name == "update" }}
skip_callback :dispatch, :after, :after2, :per_key => {:unless => proc {|c| c.action_name == "delete" }}
end
class Child < GrandParent
skip_callback :dispatch, :before, :before2, :per_key => {:unless => proc {|c| c.action_name == "update" }}, :if => :state_open?
def state_open?
@state == :open
end
def initialize(action_name, state)
super(action_name)
@state = state
end
end
class EmptyParent
include ActiveSupport::Callbacks
def performed?
@performed ||= false
end
define_callbacks :dispatch
def perform!
@performed = true
end
def dispatch
run_callbacks :dispatch
self
end
end
class EmptyChild < EmptyParent
set_callback :dispatch, :before, :do_nothing
def do_nothing
end
end
class CountingParent
include ActiveSupport::Callbacks
attr_reader :count
define_callbacks :dispatch
def initialize
@count = 0
end
def count!
@count += 1
end
def dispatch
run_callbacks(:dispatch)
self
end
end
class CountingChild < CountingParent
end
class BasicCallbacksTest < Test::Unit::TestCase
def setup
@index = GrandParent.new("index").dispatch
@update = GrandParent.new("update").dispatch
@delete = GrandParent.new("delete").dispatch
@unknown = GrandParent.new("unknown").dispatch
end
def test_basic_per_key1
assert_equal %w(before1 before2 index), @index.log
end
def test_basic_per_key2
assert_equal %w(before1 before2 update after2 after1), @update.log
end
def test_basic_per_key3
assert_equal %w(delete after2 after1), @delete.log
end
end
class InheritedCallbacksTest < Test::Unit::TestCase
def setup
@index = Parent.new("index").dispatch
@update = Parent.new("update").dispatch
@delete = Parent.new("delete").dispatch
@unknown = Parent.new("unknown").dispatch
end
def test_inherited_excluded
assert_equal %w(before1 index), @index.log
end
def test_inherited_not_excluded
assert_equal %w(before1 before2 update after1), @update.log
end
def test_partially_excluded
assert_equal %w(delete after2 after1), @delete.log
end
end
class InheritedCallbacksTest2 < Test::Unit::TestCase
def setup
@update1 = Child.new("update", :open).dispatch
@update2 = Child.new("update", :closed).dispatch
end
def test_crazy_mix_on
assert_equal %w(before1 update after2 after1), @update1.log
end
def test_crazy_mix_off
assert_equal %w(before1 before2 update after2 after1), @update2.log
end
end
class DynamicInheritedCallbacks < Test::Unit::TestCase
def test_callbacks_looks_to_the_superclass_before_running
child = EmptyChild.new.dispatch
assert !child.performed?
EmptyParent.set_callback :dispatch, :before, :perform!
child = EmptyChild.new.dispatch
assert child.performed?
end
def test_callbacks_should_be_performed_once_in_child_class
CountingParent.set_callback(:dispatch, :before) { count! }
child = CountingChild.new.dispatch
assert_equal 1, child.count
end
end
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