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require 'cases/helper'
require 'models/topic' # For booleans
require 'models/pirate' # For timestamps
require 'models/parrot'
require 'models/person' # For optimistic locking
class Pirate # Just reopening it, not defining it
attr_accessor :detected_changes_in_after_update # Boolean for if changes are detected
attr_accessor :changes_detected_in_after_update # Actual changes
after_update :check_changes
private
# after_save/update in sweepers, observers, and the model itself
# can end up checking dirty status and acting on the results
def check_changes
if self.changed?
self.detected_changes_in_after_update = true
self.changes_detected_in_after_update = self.changes
end
end
end
class DirtyTest < ActiveRecord::TestCase
def test_attribute_changes
# New record - no changes.
pirate = Pirate.new
assert !pirate.catchphrase_changed?
assert_nil pirate.catchphrase_change
# Change catchphrase.
pirate.catchphrase = 'arrr'
assert pirate.catchphrase_changed?
assert_nil pirate.catchphrase_was
assert_equal [nil, 'arrr'], pirate.catchphrase_change
# Saved - no changes.
pirate.save!
assert !pirate.catchphrase_changed?
assert_nil pirate.catchphrase_change
# Same value - no changes.
pirate.catchphrase = 'arrr'
assert !pirate.catchphrase_changed?
assert_nil pirate.catchphrase_change
end
def test_nullable_integer_not_marked_as_changed_if_new_value_is_blank
pirate = Pirate.new
["", nil].each do |value|
pirate.parrot_id = value
assert !pirate.parrot_id_changed?
assert_nil pirate.parrot_id_change
end
end
def test_zero_to_blank_marked_as_changed
pirate = Pirate.new
pirate.catchphrase = "Yarrrr, me hearties"
pirate.parrot_id = 1
pirate.save
# check the change from 1 to ''
pirate = Pirate.find_by_catchphrase("Yarrrr, me hearties")
pirate.parrot_id = ''
assert pirate.parrot_id_changed?
assert_equal([1, nil], pirate.parrot_id_change)
pirate.save
# check the change from nil to 0
pirate = Pirate.find_by_catchphrase("Yarrrr, me hearties")
pirate.parrot_id = 0
assert pirate.parrot_id_changed?
assert_equal([nil, 0], pirate.parrot_id_change)
pirate.save
# check the change from 0 to ''
pirate = Pirate.find_by_catchphrase("Yarrrr, me hearties")
pirate.parrot_id = ''
assert pirate.parrot_id_changed?
assert_equal([0, nil], pirate.parrot_id_change)
end
def test_object_should_be_changed_if_any_attribute_is_changed
pirate = Pirate.new
assert !pirate.changed?
assert_equal [], pirate.changed
assert_equal Hash.new, pirate.changes
pirate.catchphrase = 'arrr'
assert pirate.changed?
assert_nil pirate.catchphrase_was
assert_equal %w(catchphrase), pirate.changed
assert_equal({'catchphrase' => [nil, 'arrr']}, pirate.changes)
pirate.save
assert !pirate.changed?
assert_equal [], pirate.changed
assert_equal Hash.new, pirate.changes
end
def test_attribute_will_change!
pirate = Pirate.create!(:catchphrase => 'arr')
pirate.catchphrase << ' matey'
assert !pirate.catchphrase_changed?
assert pirate.catchphrase_will_change!
assert pirate.catchphrase_changed?
assert_equal ['arr matey', 'arr matey'], pirate.catchphrase_change
pirate.catchphrase << '!'
assert pirate.catchphrase_changed?
assert_equal ['arr matey', 'arr matey!'], pirate.catchphrase_change
end
def test_association_assignment_changes_foreign_key
pirate = Pirate.create!(:catchphrase => 'jarl')
pirate.parrot = Parrot.create!
assert pirate.changed?
assert_equal %w(parrot_id), pirate.changed
end
def test_attribute_should_be_compared_with_type_cast
topic = Topic.new
assert topic.approved?
assert !topic.approved_changed?
# Coming from web form.
params = {:topic => {:approved => 1}}
# In the controller.
topic.attributes = params[:topic]
assert topic.approved?
assert !topic.approved_changed?
end
def test_partial_update
pirate = Pirate.new(:catchphrase => 'foo')
old_updated_on = 1.hour.ago.beginning_of_day
with_partial_updates Pirate, false do
assert_queries(2) { 2.times { pirate.save! } }
Pirate.update_all({ :updated_on => old_updated_on }, :id => pirate.id)
end
with_partial_updates Pirate, true do
assert_queries(0) { 2.times { pirate.save! } }
assert_equal old_updated_on, pirate.reload.updated_on
assert_queries(1) { pirate.catchphrase = 'bar'; pirate.save! }
assert_not_equal old_updated_on, pirate.reload.updated_on
end
end
def test_partial_update_with_optimistic_locking
person = Person.new(:first_name => 'foo')
old_lock_version = 1
with_partial_updates Person, false do
assert_queries(2) { 2.times { person.save! } }
Person.update_all({ :first_name => 'baz' }, :id => person.id)
end
with_partial_updates Person, true do
assert_queries(0) { 2.times { person.save! } }
assert_equal old_lock_version, person.reload.lock_version
assert_queries(1) { person.first_name = 'bar'; person.save! }
assert_not_equal old_lock_version, person.reload.lock_version
end
end
def test_changed_attributes_should_be_preserved_if_save_failure
pirate = Pirate.new
pirate.parrot_id = 1
assert !pirate.save
check_pirate_after_save_failure(pirate)
pirate = Pirate.new
pirate.parrot_id = 1
assert_raises(ActiveRecord::RecordInvalid) { pirate.save! }
check_pirate_after_save_failure(pirate)
end
def test_reload_should_clear_changed_attributes
pirate = Pirate.create!(:catchphrase => "shiver me timbers")
pirate.catchphrase = "*hic*"
assert pirate.changed?
pirate.reload
assert !pirate.changed?
end
private
def with_partial_updates(klass, on = true)
old = klass.partial_updates?
klass.partial_updates = on
yield
ensure
klass.partial_updates = old
end
def check_pirate_after_save_failure(pirate)
assert pirate.changed?
assert pirate.parrot_id_changed?
assert_equal %w(parrot_id), pirate.changed
assert_nil pirate.parrot_id_was
end
end
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