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3e30c5d422
This allows these exceptions to be handled generically in conjunction with RecordInvalid.
539 lines
17 KiB
Ruby
539 lines
17 KiB
Ruby
require "cases/helper"
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require 'models/developer'
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require 'models/computer'
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class CallbackDeveloper < ActiveRecord::Base
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self.table_name = 'developers'
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class << self
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def callback_string(callback_method)
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"history << [#{callback_method.to_sym.inspect}, :string]"
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end
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def callback_proc(callback_method)
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Proc.new { |model| model.history << [callback_method, :proc] }
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end
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def define_callback_method(callback_method)
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define_method(callback_method) do
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self.history << [callback_method, :method]
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end
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send(callback_method, :"#{callback_method}")
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end
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def callback_object(callback_method)
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klass = Class.new
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klass.send(:define_method, callback_method) do |model|
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model.history << [callback_method, :object]
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end
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klass.new
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end
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end
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ActiveRecord::Callbacks::CALLBACKS.each do |callback_method|
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next if callback_method.to_s =~ /^around_/
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define_callback_method(callback_method)
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send(callback_method, callback_string(callback_method))
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send(callback_method, callback_proc(callback_method))
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send(callback_method, callback_object(callback_method))
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send(callback_method) { |model| model.history << [callback_method, :block] }
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end
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def history
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@history ||= []
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end
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end
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class CallbackDeveloperWithFalseValidation < CallbackDeveloper
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before_validation proc { |model| model.history << [:before_validation, :returning_false]; false }
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before_validation proc { |model| model.history << [:before_validation, :should_never_get_here] }
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end
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class ParentDeveloper < ActiveRecord::Base
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self.table_name = 'developers'
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attr_accessor :after_save_called
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before_validation {|record| record.after_save_called = true}
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end
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class ChildDeveloper < ParentDeveloper
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end
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class RecursiveCallbackDeveloper < ActiveRecord::Base
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self.table_name = 'developers'
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before_save :on_before_save
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after_save :on_after_save
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attr_reader :on_before_save_called, :on_after_save_called
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def on_before_save
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@on_before_save_called ||= 0
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@on_before_save_called += 1
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save unless @on_before_save_called > 1
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end
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def on_after_save
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@on_after_save_called ||= 0
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@on_after_save_called += 1
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save unless @on_after_save_called > 1
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end
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end
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class ImmutableDeveloper < ActiveRecord::Base
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self.table_name = 'developers'
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validates_inclusion_of :salary, :in => 50000..200000
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before_save :cancel
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before_destroy :cancel
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def cancelled?
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@cancelled == true
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end
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private
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def cancel
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@cancelled = true
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false
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end
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end
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class ImmutableMethodDeveloper < ActiveRecord::Base
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self.table_name = 'developers'
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validates_inclusion_of :salary, :in => 50000..200000
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def cancelled?
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@cancelled == true
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end
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before_save do
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@cancelled = true
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false
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end
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before_destroy do
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@cancelled = true
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false
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end
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end
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class OnCallbacksDeveloper < ActiveRecord::Base
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self.table_name = 'developers'
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before_validation { history << :before_validation }
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before_validation(:on => :create){ history << :before_validation_on_create }
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before_validation(:on => :update){ history << :before_validation_on_update }
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validate do
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history << :validate
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end
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after_validation { history << :after_validation }
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after_validation(:on => :create){ history << :after_validation_on_create }
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after_validation(:on => :update){ history << :after_validation_on_update }
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def history
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@history ||= []
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end
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end
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class ContextualCallbacksDeveloper < ActiveRecord::Base
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self.table_name = 'developers'
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before_validation { history << :before_validation }
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before_validation :before_validation_on_create_and_update, :on => [ :create, :update ]
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validate do
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history << :validate
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end
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after_validation { history << :after_validation }
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after_validation :after_validation_on_create_and_update, :on => [ :create, :update ]
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def before_validation_on_create_and_update
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history << "before_validation_on_#{self.validation_context}".to_sym
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end
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def after_validation_on_create_and_update
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history << "after_validation_on_#{self.validation_context}".to_sym
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end
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def history
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@history ||= []
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end
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end
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class CallbackCancellationDeveloper < ActiveRecord::Base
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self.table_name = 'developers'
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attr_reader :after_save_called, :after_create_called, :after_update_called, :after_destroy_called
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attr_accessor :cancel_before_save, :cancel_before_create, :cancel_before_update, :cancel_before_destroy
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before_save {defined?(@cancel_before_save) ? !@cancel_before_save : false}
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before_create { !@cancel_before_create }
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before_update { !@cancel_before_update }
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before_destroy { !@cancel_before_destroy }
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after_save { @after_save_called = true }
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after_update { @after_update_called = true }
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after_create { @after_create_called = true }
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after_destroy { @after_destroy_called = true }
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end
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class CallbacksTest < ActiveRecord::TestCase
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fixtures :developers
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def test_initialize
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david = CallbackDeveloper.new
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assert_equal [
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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], david.history
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end
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def test_find
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david = CallbackDeveloper.find(1)
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assert_equal [
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[ :after_find, :method ],
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[ :after_find, :string ],
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[ :after_find, :proc ],
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[ :after_find, :object ],
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[ :after_find, :block ],
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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], david.history
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end
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def test_new_valid?
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david = CallbackDeveloper.new
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david.valid?
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assert_equal [
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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[ :before_validation, :method ],
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[ :before_validation, :string ],
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[ :before_validation, :proc ],
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[ :before_validation, :object ],
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[ :before_validation, :block ],
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[ :after_validation, :method ],
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[ :after_validation, :string ],
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[ :after_validation, :proc ],
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[ :after_validation, :object ],
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[ :after_validation, :block ],
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], david.history
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end
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def test_existing_valid?
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david = CallbackDeveloper.find(1)
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david.valid?
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assert_equal [
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[ :after_find, :method ],
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[ :after_find, :string ],
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[ :after_find, :proc ],
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[ :after_find, :object ],
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[ :after_find, :block ],
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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[ :before_validation, :method ],
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[ :before_validation, :string ],
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[ :before_validation, :proc ],
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[ :before_validation, :object ],
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[ :before_validation, :block ],
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[ :after_validation, :method ],
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[ :after_validation, :string ],
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[ :after_validation, :proc ],
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[ :after_validation, :object ],
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[ :after_validation, :block ],
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], david.history
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end
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def test_create
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david = CallbackDeveloper.create('name' => 'David', 'salary' => 1000000)
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assert_equal [
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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[ :before_validation, :method ],
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[ :before_validation, :string ],
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[ :before_validation, :proc ],
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[ :before_validation, :object ],
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[ :before_validation, :block ],
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[ :after_validation, :method ],
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[ :after_validation, :string ],
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[ :after_validation, :proc ],
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[ :after_validation, :object ],
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[ :after_validation, :block ],
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[ :before_save, :method ],
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[ :before_save, :string ],
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[ :before_save, :proc ],
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[ :before_save, :object ],
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[ :before_save, :block ],
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[ :before_create, :method ],
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[ :before_create, :string ],
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[ :before_create, :proc ],
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[ :before_create, :object ],
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[ :before_create, :block ],
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[ :after_create, :method ],
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[ :after_create, :string ],
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[ :after_create, :proc ],
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[ :after_create, :object ],
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[ :after_create, :block ],
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[ :after_save, :method ],
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[ :after_save, :string ],
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[ :after_save, :proc ],
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[ :after_save, :object ],
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[ :after_save, :block ]
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], david.history
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end
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def test_validate_on_create
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david = OnCallbacksDeveloper.create('name' => 'David', 'salary' => 1000000)
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assert_equal [
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:before_validation,
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:before_validation_on_create,
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:validate,
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:after_validation,
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:after_validation_on_create
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], david.history
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end
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def test_validate_on_contextual_create
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david = ContextualCallbacksDeveloper.create('name' => 'David', 'salary' => 1000000)
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assert_equal [
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:before_validation,
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:before_validation_on_create,
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:validate,
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:after_validation,
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:after_validation_on_create
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], david.history
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end
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def test_update
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david = CallbackDeveloper.find(1)
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david.save
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assert_equal [
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[ :after_find, :method ],
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[ :after_find, :string ],
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[ :after_find, :proc ],
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[ :after_find, :object ],
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[ :after_find, :block ],
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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[ :before_validation, :method ],
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[ :before_validation, :string ],
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[ :before_validation, :proc ],
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[ :before_validation, :object ],
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[ :before_validation, :block ],
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[ :after_validation, :method ],
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[ :after_validation, :string ],
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[ :after_validation, :proc ],
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[ :after_validation, :object ],
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[ :after_validation, :block ],
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[ :before_save, :method ],
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[ :before_save, :string ],
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[ :before_save, :proc ],
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[ :before_save, :object ],
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[ :before_save, :block ],
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[ :before_update, :method ],
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[ :before_update, :string ],
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[ :before_update, :proc ],
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[ :before_update, :object ],
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[ :before_update, :block ],
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[ :after_update, :method ],
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[ :after_update, :string ],
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[ :after_update, :proc ],
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[ :after_update, :object ],
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[ :after_update, :block ],
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[ :after_save, :method ],
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[ :after_save, :string ],
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[ :after_save, :proc ],
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[ :after_save, :object ],
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[ :after_save, :block ]
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], david.history
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end
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def test_validate_on_update
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david = OnCallbacksDeveloper.find(1)
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david.save
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assert_equal [
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:before_validation,
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:before_validation_on_update,
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:validate,
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:after_validation,
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:after_validation_on_update
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], david.history
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end
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def test_validate_on_contextual_update
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david = ContextualCallbacksDeveloper.find(1)
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david.save
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assert_equal [
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:before_validation,
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:before_validation_on_update,
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:validate,
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:after_validation,
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:after_validation_on_update
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], david.history
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end
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def test_destroy
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david = CallbackDeveloper.find(1)
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david.destroy
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assert_equal [
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[ :after_find, :method ],
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[ :after_find, :string ],
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[ :after_find, :proc ],
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[ :after_find, :object ],
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[ :after_find, :block ],
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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[ :before_destroy, :method ],
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[ :before_destroy, :string ],
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[ :before_destroy, :proc ],
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[ :before_destroy, :object ],
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[ :before_destroy, :block ],
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[ :after_destroy, :method ],
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[ :after_destroy, :string ],
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[ :after_destroy, :proc ],
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[ :after_destroy, :object ],
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[ :after_destroy, :block ]
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], david.history
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end
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def test_delete
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david = CallbackDeveloper.find(1)
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CallbackDeveloper.delete(david.id)
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assert_equal [
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[ :after_find, :method ],
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[ :after_find, :string ],
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[ :after_find, :proc ],
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[ :after_find, :object ],
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[ :after_find, :block ],
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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], david.history
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end
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def test_before_save_returning_false
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david = ImmutableDeveloper.find(1)
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assert david.valid?
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assert !david.save
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exc = assert_raise(ActiveRecord::RecordNotSaved) { david.save! }
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assert_equal exc.record, david
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david = ImmutableDeveloper.find(1)
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david.salary = 10_000_000
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assert !david.valid?
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assert !david.save
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assert_raise(ActiveRecord::RecordInvalid) { david.save! }
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someone = CallbackCancellationDeveloper.find(1)
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someone.cancel_before_save = true
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assert someone.valid?
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assert !someone.save
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assert_save_callbacks_not_called(someone)
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end
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def test_before_create_returning_false
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someone = CallbackCancellationDeveloper.new
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someone.cancel_before_create = true
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assert someone.valid?
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assert !someone.save
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assert_save_callbacks_not_called(someone)
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end
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def test_before_update_returning_false
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someone = CallbackCancellationDeveloper.find(1)
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someone.cancel_before_update = true
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assert someone.valid?
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assert !someone.save
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assert_save_callbacks_not_called(someone)
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end
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def test_before_destroy_returning_false
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david = ImmutableDeveloper.find(1)
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assert !david.destroy
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exc = assert_raise(ActiveRecord::RecordNotDestroyed) { david.destroy! }
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assert_equal exc.record, david
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assert_not_nil ImmutableDeveloper.find_by_id(1)
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someone = CallbackCancellationDeveloper.find(1)
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someone.cancel_before_destroy = true
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assert !someone.destroy
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assert_raise(ActiveRecord::RecordNotDestroyed) { someone.destroy! }
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assert !someone.after_destroy_called
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end
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def assert_save_callbacks_not_called(someone)
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assert !someone.after_save_called
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assert !someone.after_create_called
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assert !someone.after_update_called
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end
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private :assert_save_callbacks_not_called
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def test_callback_returning_false
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david = CallbackDeveloperWithFalseValidation.find(1)
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david.save
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assert_equal [
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[ :after_find, :method ],
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[ :after_find, :string ],
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[ :after_find, :proc ],
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[ :after_find, :object ],
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[ :after_find, :block ],
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[ :after_initialize, :method ],
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[ :after_initialize, :string ],
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[ :after_initialize, :proc ],
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[ :after_initialize, :object ],
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[ :after_initialize, :block ],
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[ :before_validation, :method ],
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[ :before_validation, :string ],
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[ :before_validation, :proc ],
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[ :before_validation, :object ],
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[ :before_validation, :block ],
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[ :before_validation, :returning_false ],
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[ :after_rollback, :block ],
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[ :after_rollback, :object ],
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[ :after_rollback, :proc ],
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[ :after_rollback, :string ],
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[ :after_rollback, :method ],
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], david.history
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end
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def test_inheritance_of_callbacks
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parent = ParentDeveloper.new
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assert !parent.after_save_called
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parent.save
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assert parent.after_save_called
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child = ChildDeveloper.new
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assert !child.after_save_called
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child.save
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assert child.after_save_called
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end
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end
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