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# frozen_string_literal: true
require "cases/helper"
require "active_model/attributes"
class AttributesDirtyTest < ActiveModel::TestCase
class DirtyModel
include ActiveModel::Model
include ActiveModel::Attributes
attribute :name, :string
attribute :color, :string
attribute :size, :integer
def save
changes_applied
end
def reload
clear_changes_information
end
end
setup do
@model = DirtyModel.new
end
test "setting attribute will result in change" do
assert !@model.changed?
assert !@model.name_changed?
@model.name = "Ringo"
assert @model.changed?
assert @model.name_changed?
end
test "list of changed attribute keys" do
assert_equal [], @model.changed
@model.name = "Paul"
assert_equal ["name"], @model.changed
end
test "changes to attribute values" do
assert !@model.changes["name"]
@model.name = "John"
assert_equal [nil, "John"], @model.changes["name"]
end
test "checking if an attribute has changed to a particular value" do
@model.name = "Ringo"
assert @model.name_changed?(from: nil, to: "Ringo")
assert_not @model.name_changed?(from: "Pete", to: "Ringo")
assert @model.name_changed?(to: "Ringo")
assert_not @model.name_changed?(to: "Pete")
assert @model.name_changed?(from: nil)
assert_not @model.name_changed?(from: "Pete")
end
test "changes accessible through both strings and symbols" do
@model.name = "David"
assert_not_nil @model.changes[:name]
assert_not_nil @model.changes["name"]
end
test "be consistent with symbols arguments after the changes are applied" do
@model.name = "David"
assert @model.attribute_changed?(:name)
@model.save
@model.name = "Rafael"
assert @model.attribute_changed?(:name)
end
test "attribute mutation" do
@model.instance_variable_set("@name", "Yam".dup)
assert !@model.name_changed?
@model.name.replace("Hadad")
assert !@model.name_changed?
@model.name_will_change!
@model.name.replace("Baal")
assert @model.name_changed?
end
test "resetting attribute" do
@model.name = "Bob"
@model.restore_name!
assert_nil @model.name
assert !@model.name_changed?
end
test "setting color to same value should not result in change being recorded" do
@model.color = "red"
assert @model.color_changed?
@model.save
assert !@model.color_changed?
assert !@model.changed?
@model.color = "red"
assert !@model.color_changed?
assert !@model.changed?
end
test "saving should reset model's changed status" do
@model.name = "Alf"
assert @model.changed?
@model.save
assert !@model.changed?
assert !@model.name_changed?
end
test "saving should preserve previous changes" do
@model.name = "Jericho Cane"
@model.save
assert_equal [nil, "Jericho Cane"], @model.previous_changes["name"]
end
test "setting new attributes should not affect previous changes" do
@model.name = "Jericho Cane"
@model.save
@model.name = "DudeFella ManGuy"
assert_equal [nil, "Jericho Cane"], @model.name_previous_change
end
test "saving should preserve model's previous changed status" do
@model.name = "Jericho Cane"
@model.save
assert @model.name_previously_changed?
end
test "previous value is preserved when changed after save" do
assert_equal({}, @model.changed_attributes)
@model.name = "Paul"
assert_equal({ "name" => nil }, @model.changed_attributes)
@model.save
@model.name = "John"
assert_equal({ "name" => "Paul" }, @model.changed_attributes)
end
test "changing the same attribute multiple times retains the correct original value" do
@model.name = "Otto"
@model.save
@model.name = "DudeFella ManGuy"
@model.name = "Mr. Manfredgensonton"
assert_equal ["Otto", "Mr. Manfredgensonton"], @model.name_change
assert_equal @model.name_was, "Otto"
end
test "using attribute_will_change! with a symbol" do
@model.size = 1
assert @model.size_changed?
end
test "reload should reset all changes" do
@model.name = "Dmitry"
@model.name_changed?
@model.save
@model.name = "Bob"
assert_equal [nil, "Dmitry"], @model.previous_changes["name"]
assert_equal "Dmitry", @model.changed_attributes["name"]
@model.reload
assert_equal ActiveSupport::HashWithIndifferentAccess.new, @model.previous_changes
assert_equal ActiveSupport::HashWithIndifferentAccess.new, @model.changed_attributes
end
test "restore_attributes should restore all previous data" do
@model.name = "Dmitry"
@model.color = "Red"
@model.save
@model.name = "Bob"
@model.color = "White"
@model.restore_attributes
assert_not @model.changed?
assert_equal "Dmitry", @model.name
assert_equal "Red", @model.color
end
test "restore_attributes can restore only some attributes" do
@model.name = "Dmitry"
@model.color = "Red"
@model.save
@model.name = "Bob"
@model.color = "White"
@model.restore_attributes(["name"])
assert @model.changed?
assert_equal "Dmitry", @model.name
assert_equal "White", @model.color
end
end
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