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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
require "models/aircraft"
class NumericData < ActiveRecord::Base
self.table_name = "numeric_data"
end
class DirtyTest < ActiveRecord::TestCase
include InTimeZone
# Dummy to force column loads so query counts are clean.
def setup
Person.create first_name: "foo"
end
def test_attribute_changes
# New record - no changes.
pirate = Pirate.new
assert_equal false, pirate.catchphrase_changed?
assert_equal false, pirate.non_validated_parrot_id_changed?
# 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_time_attributes_changes_with_time_zone
in_time_zone "Paris" do
target = Class.new(ActiveRecord::Base)
target.table_name = "pirates"
# New record - no changes.
pirate = target.new
assert !pirate.created_on_changed?
assert_nil pirate.created_on_change
# Saved - no changes.
pirate.catchphrase = "arrrr, time zone!!"
pirate.save!
assert !pirate.created_on_changed?
assert_nil pirate.created_on_change
# Change created_on.
old_created_on = pirate.created_on
pirate.created_on = Time.now - 1.day
assert pirate.created_on_changed?
assert_kind_of ActiveSupport::TimeWithZone, pirate.created_on_was
assert_equal old_created_on, pirate.created_on_was
pirate.created_on = old_created_on
assert !pirate.created_on_changed?
end
end
def test_setting_time_attributes_with_time_zone_field_to_itself_should_not_be_marked_as_a_change
in_time_zone "Paris" do
target = Class.new(ActiveRecord::Base)
target.table_name = "pirates"
pirate = target.create!
pirate.created_on = pirate.created_on
assert !pirate.created_on_changed?
end
end
def test_time_attributes_changes_without_time_zone_by_skip
in_time_zone "Paris" do
target = Class.new(ActiveRecord::Base)
target.table_name = "pirates"
target.skip_time_zone_conversion_for_attributes = [:created_on]
# New record - no changes.
pirate = target.new
assert !pirate.created_on_changed?
assert_nil pirate.created_on_change
# Saved - no changes.
pirate.catchphrase = "arrrr, time zone!!"
pirate.save!
assert !pirate.created_on_changed?
assert_nil pirate.created_on_change
# Change created_on.
old_created_on = pirate.created_on
pirate.created_on = Time.now + 1.day
assert pirate.created_on_changed?
# kind_of does not work because
# ActiveSupport::TimeWithZone.name == 'Time'
assert_instance_of Time, pirate.created_on_was
assert_equal old_created_on, pirate.created_on_was
end
end
def test_time_attributes_changes_without_time_zone
with_timezone_config aware_attributes: false do
target = Class.new(ActiveRecord::Base)
target.table_name = "pirates"
# New record - no changes.
pirate = target.new
assert !pirate.created_on_changed?
assert_nil pirate.created_on_change
# Saved - no changes.
pirate.catchphrase = "arrrr, time zone!!"
pirate.save!
assert !pirate.created_on_changed?
assert_nil pirate.created_on_change
# Change created_on.
old_created_on = pirate.created_on
pirate.created_on = Time.now + 1.day
assert pirate.created_on_changed?
# kind_of does not work because
# ActiveSupport::TimeWithZone.name == 'Time'
assert_instance_of Time, pirate.created_on_was
assert_equal old_created_on, pirate.created_on_was
end
end
def test_aliased_attribute_changes
# the actual attribute here is name, title is an
# alias setup via alias_attribute
parrot = Parrot.new
assert !parrot.title_changed?
assert_nil parrot.title_change
parrot.name = "Sam"
assert parrot.title_changed?
assert_nil parrot.title_was
assert_equal parrot.name_change, parrot.title_change
end
def test_restore_attribute!
pirate = Pirate.create!(catchphrase: "Yar!")
pirate.catchphrase = "Ahoy!"
pirate.restore_catchphrase!
assert_equal "Yar!", pirate.catchphrase
assert_equal Hash.new, pirate.changes
assert !pirate.catchphrase_changed?
end
def test_nullable_number_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_nullable_decimal_not_marked_as_changed_if_new_value_is_blank
numeric_data = NumericData.new
["", nil].each do |value|
numeric_data.bank_balance = value
assert !numeric_data.bank_balance_changed?
assert_nil numeric_data.bank_balance_change
end
end
def test_nullable_float_not_marked_as_changed_if_new_value_is_blank
numeric_data = NumericData.new
["", nil].each do |value|
numeric_data.temperature = value
assert !numeric_data.temperature_changed?
assert_nil numeric_data.temperature_change
end
end
def test_nullable_datetime_not_marked_as_changed_if_new_value_is_blank
in_time_zone "Edinburgh" do
target = Class.new(ActiveRecord::Base)
target.table_name = "topics"
topic = target.create
assert_nil topic.written_on
["", nil].each do |value|
topic.written_on = value
assert_nil topic.written_on
assert !topic.written_on_changed?
end
end
end
def test_integer_zero_to_string_zero_not_marked_as_changed
pirate = Pirate.new
pirate.parrot_id = 0
pirate.catchphrase = "arrr"
assert pirate.save!
assert !pirate.changed?
pirate.parrot_id = "0"
assert !pirate.changed?
end
def test_integer_zero_to_integer_zero_not_marked_as_changed
pirate = Pirate.new
pirate.parrot_id = 0
pirate.catchphrase = "arrr"
assert pirate.save!
assert !pirate.changed?
pirate.parrot_id = 0
assert !pirate.changed?
end
def test_float_zero_to_string_zero_not_marked_as_changed
data = NumericData.new temperature: 0.0
data.save!
assert_not data.changed?
data.temperature = "0"
assert_empty data.changes
data.temperature = "0.0"
assert_empty data.changes
data.temperature = "0.00"
assert_empty data.changes
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")
assert !pirate.catchphrase_changed?
assert pirate.catchphrase_will_change!
assert pirate.catchphrase_changed?
assert_equal ["arr", "arr"], pirate.catchphrase_change
pirate.catchphrase << " matey!"
assert pirate.catchphrase_changed?
assert_equal ["arr", "arr matey!"], pirate.catchphrase_change
end
def test_virtual_attribute_will_change
assert_deprecated do
parrot = Parrot.create!(name: "Ruby")
parrot.send(:attribute_will_change!, :cancel_save_from_callback)
assert parrot.has_changes_to_save?
end
end
def test_association_assignment_changes_foreign_key
pirate = Pirate.create!(catchphrase: "jarl")
pirate.parrot = Parrot.create!(name: "Lorre")
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_writes Pirate, false do
assert_queries(2) { 2.times { pirate.save! } }
Pirate.where(id: pirate.id).update_all(updated_on: old_updated_on)
end
with_partial_writes 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")
with_partial_writes Person, false do
assert_queries(2) { 2.times { person.save! } }
Person.where(id: person.id).update_all(first_name: "baz")
end
old_lock_version = person.lock_version
with_partial_writes 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_raise(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
def test_dup_objects_should_not_copy_dirty_flag_from_creator
pirate = Pirate.create!(catchphrase: "shiver me timbers")
pirate_dup = pirate.dup
pirate_dup.restore_catchphrase!
pirate.catchphrase = "I love Rum"
assert pirate.catchphrase_changed?
assert !pirate_dup.catchphrase_changed?
end
def test_reverted_changes_are_not_dirty
phrase = "shiver me timbers"
pirate = Pirate.create!(catchphrase: phrase)
pirate.catchphrase = "*hic*"
assert pirate.changed?
pirate.catchphrase = phrase
assert !pirate.changed?
end
def test_reverted_changes_are_not_dirty_after_multiple_changes
phrase = "shiver me timbers"
pirate = Pirate.create!(catchphrase: phrase)
10.times do |i|
pirate.catchphrase = "*hic*" * i
assert pirate.changed?
end
assert pirate.changed?
pirate.catchphrase = phrase
assert !pirate.changed?
end
def test_reverted_changes_are_not_dirty_going_from_nil_to_value_and_back
pirate = Pirate.create!(catchphrase: "Yar!")
pirate.parrot_id = 1
assert pirate.changed?
assert pirate.parrot_id_changed?
assert !pirate.catchphrase_changed?
pirate.parrot_id = nil
assert !pirate.changed?
assert !pirate.parrot_id_changed?
assert !pirate.catchphrase_changed?
end
def test_save_should_store_serialized_attributes_even_with_partial_writes
with_partial_writes(Topic) do
topic = Topic.create!(content: { a: "a" })
assert_not topic.changed?
topic.content[:b] = "b"
assert topic.changed?
topic.save!
assert_not topic.changed?
assert_equal "b", topic.content[:b]
topic.reload
assert_equal "b", topic.content[:b]
end
end
def test_save_always_should_update_timestamps_when_serialized_attributes_are_present
with_partial_writes(Topic) do
topic = Topic.create!(content: { a: "a" })
topic.save!
updated_at = topic.updated_at
travel(1.second) do
topic.content[:hello] = "world"
topic.save!
end
assert_not_equal updated_at, topic.updated_at
assert_equal "world", topic.content[:hello]
end
end
def test_save_should_not_save_serialized_attribute_with_partial_writes_if_not_present
with_partial_writes(Topic) do
Topic.create!(author_name: "Bill", content: { a: "a" })
topic = Topic.select("id, author_name").first
topic.update_columns author_name: "John"
topic = Topic.first
assert_not_nil topic.content
end
end
def test_previous_changes
# original values should be in previous_changes
pirate = Pirate.new
assert_equal Hash.new, pirate.previous_changes
pirate.catchphrase = "arrr"
pirate.save!
assert_equal 4, pirate.previous_changes.size
assert_equal [nil, "arrr"], pirate.previous_changes["catchphrase"]
assert_equal [nil, pirate.id], pirate.previous_changes["id"]
assert_nil pirate.previous_changes["updated_on"][0]
assert_not_nil pirate.previous_changes["updated_on"][1]
assert_nil pirate.previous_changes["created_on"][0]
assert_not_nil pirate.previous_changes["created_on"][1]
assert !pirate.previous_changes.key?("parrot_id")
# original values should be in previous_changes
pirate = Pirate.new
assert_equal Hash.new, pirate.previous_changes
pirate.catchphrase = "arrr"
pirate.save
assert_equal 4, pirate.previous_changes.size
assert_equal [nil, "arrr"], pirate.previous_changes["catchphrase"]
assert_equal [nil, pirate.id], pirate.previous_changes["id"]
assert_includes pirate.previous_changes, "updated_on"
assert_includes pirate.previous_changes, "created_on"
assert !pirate.previous_changes.key?("parrot_id")
pirate.catchphrase = "Yar!!"
pirate.reload
assert_equal Hash.new, pirate.previous_changes
pirate = Pirate.find_by_catchphrase("arrr")
travel(1.second)
pirate.catchphrase = "Me Maties!"
pirate.save!
assert_equal 2, pirate.previous_changes.size
assert_equal ["arrr", "Me Maties!"], pirate.previous_changes["catchphrase"]
assert_not_nil pirate.previous_changes["updated_on"][0]
assert_not_nil pirate.previous_changes["updated_on"][1]
assert !pirate.previous_changes.key?("parrot_id")
assert !pirate.previous_changes.key?("created_on")
pirate = Pirate.find_by_catchphrase("Me Maties!")
travel(1.second)
pirate.catchphrase = "Thar She Blows!"
pirate.save
assert_equal 2, pirate.previous_changes.size
assert_equal ["Me Maties!", "Thar She Blows!"], pirate.previous_changes["catchphrase"]
assert_not_nil pirate.previous_changes["updated_on"][0]
assert_not_nil pirate.previous_changes["updated_on"][1]
assert !pirate.previous_changes.key?("parrot_id")
assert !pirate.previous_changes.key?("created_on")
travel(1.second)
pirate = Pirate.find_by_catchphrase("Thar She Blows!")
pirate.update(catchphrase: "Ahoy!")
assert_equal 2, pirate.previous_changes.size
assert_equal ["Thar She Blows!", "Ahoy!"], pirate.previous_changes["catchphrase"]
assert_not_nil pirate.previous_changes["updated_on"][0]
assert_not_nil pirate.previous_changes["updated_on"][1]
assert !pirate.previous_changes.key?("parrot_id")
assert !pirate.previous_changes.key?("created_on")
travel(1.second)
pirate = Pirate.find_by_catchphrase("Ahoy!")
pirate.update_attribute(:catchphrase, "Ninjas suck!")
assert_equal 2, pirate.previous_changes.size
assert_equal ["Ahoy!", "Ninjas suck!"], pirate.previous_changes["catchphrase"]
assert_not_nil pirate.previous_changes["updated_on"][0]
assert_not_nil pirate.previous_changes["updated_on"][1]
assert !pirate.previous_changes.key?("parrot_id")
assert !pirate.previous_changes.key?("created_on")
ensure
travel_back
end
class Testings < ActiveRecord::Base; end
def test_field_named_field
ActiveRecord::Base.connection.create_table :testings do |t|
t.string :field
end
assert_nothing_raised do
Testings.new.attributes
end
ensure
ActiveRecord::Base.connection.drop_table :testings rescue nil
ActiveRecord::Base.clear_cache!
end
def test_datetime_attribute_can_be_updated_with_fractional_seconds
skip "Fractional seconds are not supported" unless subsecond_precision_supported?
in_time_zone "Paris" do
target = Class.new(ActiveRecord::Base)
target.table_name = "topics"
written_on = Time.utc(2012, 12, 1, 12, 0, 0).in_time_zone("Paris")
topic = target.create(written_on: written_on)
topic.written_on += 0.3
assert topic.written_on_changed?, "Fractional second update not detected"
end
end
def test_datetime_attribute_doesnt_change_if_zone_is_modified_in_string
time_in_paris = Time.utc(2014, 1, 1, 12, 0, 0).in_time_zone("Paris")
pirate = Pirate.create!(catchphrase: "rrrr", created_on: time_in_paris)
pirate.created_on = pirate.created_on.in_time_zone("Tokyo").to_s
assert !pirate.created_on_changed?
end
test "partial insert" do
with_partial_writes Person do
jon = nil
assert_sql(/first_name/i) do
jon = Person.create! first_name: "Jon"
end
assert ActiveRecord::SQLCounter.log_all.none? { |sql| sql.include?("followers_count") }
jon.reload
assert_equal "Jon", jon.first_name
assert_equal 0, jon.followers_count
assert_not_nil jon.id
end
end
test "partial insert with empty values" do
with_partial_writes Aircraft do
a = Aircraft.create!
a.reload
assert_not_nil a.id
end
end
test "in place mutation detection" do
pirate = Pirate.create!(catchphrase: "arrrr")
pirate.catchphrase << " matey!"
assert pirate.catchphrase_changed?
expected_changes = {
"catchphrase" => ["arrrr", "arrrr matey!"]
}
assert_equal(expected_changes, pirate.changes)
assert_equal("arrrr", pirate.catchphrase_was)
assert pirate.catchphrase_changed?(from: "arrrr")
assert_not pirate.catchphrase_changed?(from: "anything else")
assert_includes pirate.changed_attributes, :catchphrase
pirate.save!
pirate.reload
assert_equal "arrrr matey!", pirate.catchphrase
assert_not pirate.changed?
end
test "in place mutation for binary" do
klass = Class.new(ActiveRecord::Base) do
self.table_name = :binaries
serialize :data
end
binary = klass.create!(data: "\\\\foo")
assert_not binary.changed?
binary.data = binary.data.dup
assert_not binary.changed?
binary = klass.last
assert_not binary.changed?
binary.data << "bar"
assert binary.changed?
end
test "changes is correct for subclass" do
foo = Class.new(Pirate) do
def catchphrase
super.upcase
end
end
pirate = foo.create!(catchphrase: "arrrr")
new_catchphrase = "arrrr matey!"
pirate.catchphrase = new_catchphrase
assert pirate.catchphrase_changed?
expected_changes = {
"catchphrase" => ["arrrr", new_catchphrase]
}
assert_equal new_catchphrase.upcase, pirate.catchphrase
assert_equal expected_changes, pirate.changes
end
test "changes is correct if override attribute reader" do
pirate = Pirate.create!(catchphrase: "arrrr")
def pirate.catchphrase
super.upcase
end
new_catchphrase = "arrrr matey!"
pirate.catchphrase = new_catchphrase
assert pirate.catchphrase_changed?
expected_changes = {
"catchphrase" => ["arrrr", new_catchphrase]
}
assert_equal new_catchphrase.upcase, pirate.catchphrase
assert_equal expected_changes, pirate.changes
end
test "attribute_changed? doesn't compute in-place changes for unrelated attributes" do
test_type_class = Class.new(ActiveRecord::Type::Value) do
define_method(:changed_in_place?) do |*|
raise
end
end
klass = Class.new(ActiveRecord::Base) do
self.table_name = "people"
attribute :foo, test_type_class.new
end
model = klass.new(first_name: "Jim")
assert model.first_name_changed?
end
test "attribute_will_change! doesn't try to save non-persistable attributes" do
klass = Class.new(ActiveRecord::Base) do
self.table_name = "people"
attribute :non_persisted_attribute, :string
end
record = klass.new(first_name: "Sean")
record.non_persisted_attribute_will_change!
assert record.non_persisted_attribute_changed?
assert record.save
end
test "mutating and then assigning doesn't remove the change" do
pirate = Pirate.create!(catchphrase: "arrrr")
pirate.catchphrase << " matey!"
pirate.catchphrase = "arrrr matey!"
assert pirate.catchphrase_changed?(from: "arrrr", to: "arrrr matey!")
end
test "getters with side effects are allowed" do
klass = Class.new(Pirate) do
def catchphrase
if super.blank?
update_attribute(:catchphrase, "arr") # what could possibly go wrong?
end
super
end
end
pirate = klass.create!(catchphrase: "lol")
pirate.update_attribute(:catchphrase, nil)
assert_equal "arr", pirate.catchphrase
end
test "attributes assigned but not selected are dirty" do
person = Person.select(:id).first
refute person.changed?
person.first_name = "Sean"
assert person.changed?
person.first_name = nil
assert person.changed?
end
test "saved_change_to_attribute? returns whether a change occurred in the last save" do
person = Person.create!(first_name: "Sean")
assert person.saved_change_to_first_name?
refute person.saved_change_to_gender?
assert person.saved_change_to_first_name?(from: nil, to: "Sean")
assert person.saved_change_to_first_name?(from: nil)
assert person.saved_change_to_first_name?(to: "Sean")
refute person.saved_change_to_first_name?(from: "Jim", to: "Sean")
refute person.saved_change_to_first_name?(from: "Jim")
refute person.saved_change_to_first_name?(to: "Jim")
end
test "saved_change_to_attribute returns the change that occurred in the last save" do
person = Person.create!(first_name: "Sean", gender: "M")
assert_equal [nil, "Sean"], person.saved_change_to_first_name
assert_equal [nil, "M"], person.saved_change_to_gender
person.update(first_name: "Jim")
assert_equal ["Sean", "Jim"], person.saved_change_to_first_name
assert_nil person.saved_change_to_gender
end
test "attribute_before_last_save returns the original value before saving" do
person = Person.create!(first_name: "Sean", gender: "M")
assert_nil person.first_name_before_last_save
assert_nil person.gender_before_last_save
person.first_name = "Jim"
assert_nil person.first_name_before_last_save
assert_nil person.gender_before_last_save
person.save
assert_equal "Sean", person.first_name_before_last_save
assert_equal "M", person.gender_before_last_save
end
test "saved_changes? returns whether the last call to save changed anything" do
person = Person.create!(first_name: "Sean")
assert person.saved_changes?
person.save
refute person.saved_changes?
end
test "saved_changes returns a hash of all the changes that occurred" do
person = Person.create!(first_name: "Sean", gender: "M")
assert_equal [nil, "Sean"], person.saved_changes[:first_name]
assert_equal [nil, "M"], person.saved_changes[:gender]
assert_equal %w(id first_name gender created_at updated_at).sort, person.saved_changes.keys.sort
travel(1.second) do
person.update(first_name: "Jim")
end
assert_equal ["Sean", "Jim"], person.saved_changes[:first_name]
assert_equal %w(first_name lock_version updated_at).sort, person.saved_changes.keys.sort
end
test "changed? in after callbacks returns true but is deprecated" do
klass = Class.new(ActiveRecord::Base) do
self.table_name = "people"
after_save do
ActiveSupport::Deprecation.silence do
raise "changed? should be true" unless changed?
end
raise "has_changes_to_save? should be false" if has_changes_to_save?
end
end
person = klass.create!(first_name: "Sean")
refute person.changed?
end
private
def with_partial_writes(klass, on = true)
old = klass.partial_writes?
klass.partial_writes = on
yield
ensure
klass.partial_writes = 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