JezK

Edit File: test_dirty.rb

require 'test_helper'

class DirtyTest < Test::Unit::TestCase
  def setup
    @document = Doc { key :phrase, String }
  end

context "marking changes" do
    should "not happen if there are none" do
      doc = @document.new
      doc.phrase_changed?.should be_false
      doc.phrase_change.should be_nil
    end

should "happen when change happens" do
      doc = @document.new
      doc.phrase = 'Golly Gee Willikers Batman'
      doc.phrase_changed?.should be_true
      doc.phrase_was.should be_nil
      doc.phrase_change.should == [nil, 'Golly Gee Willikers Batman']
    end

should "happen when initializing" do
      doc = @document.new(:phrase => 'Foo')
      doc.changed?.should be_true
    end

should "clear changes on save" do
      doc = @document.new
      doc.phrase = 'Golly Gee Willikers Batman'
      doc.phrase_changed?.should be_true
      doc.save
      doc.phrase_changed?.should_not be_true
      doc.phrase_change.should be_nil
    end

should "clear changes on save!" do
      doc = @document.new
      doc.phrase = 'Golly Gee Willikers Batman'
      doc.phrase_changed?.should be_true
      doc.save!
      doc.phrase_changed?.should_not be_true
      doc.phrase_change.should be_nil
    end

should "not happen when loading from database" do
      doc = @document.create(:phrase => 'Foo')
      doc = @document.find(doc.id)

doc.changed?.should be_false
      doc.phrase = 'Fart'
      doc.changed?.should be_true
      doc.reload
      doc.changed?.should be_false
    end

should "happen if changed after loading from database" do
      doc = @document.create(:phrase => 'Foo')
      doc.reload
      doc.changed?.should be_false
      doc.phrase = 'Bar'
      doc.changed?.should be_true
    end
  end

context "blank new value and type integer" do
    should "not mark changes" do
      @document.key :age, Integer

[nil, ''].each do |value|
        doc = @document.new
        doc.age = value
        doc.age_changed?.should be_false
        doc.age_change.should be_nil
      end
    end
  end

context "blank new value and type float" do
    should "not mark changes" do
      @document.key :amount, Float

[nil, ''].each do |value|
        doc = @document.new
        doc.amount = value
        doc.amount_changed?.should be_false
        doc.amount_change.should be_nil
      end
    end
  end

context "changed?" do
    should "be true if key changed" do
      doc = @document.new
      doc.phrase = 'A penny saved is a penny earned.'
      doc.changed?.should be_true
    end

should "be false if no keys changed" do
      @document.new.changed?.should be_false
    end

should "not raise when key name is 'value'" do
      @document.key :value, Integer

doc = @document.new
      doc.value_changed?.should be_false
    end
  end

context "changes" do
    should "be empty hash if no changes" do
      @document.new.changes.should == {}
    end

should "be hash of keys with values of changes if there are changes" do
      doc = @document.new
      doc.phrase = 'A penny saved is a penny earned.'
      doc.changes['phrase'].should == [nil, 'A penny saved is a penny earned.']
    end
  end

context "changed" do
    should "be empty array if no changes" do
      @document.new.changed.should == []
    end

should "be array of keys that have changed if there are changes" do
      doc = @document.new
      doc.phrase = 'A penny saved is a penny earned.'
      doc.changed.should == ['phrase']
    end
  end

context "will_change!" do
    should "mark changes" do
      doc = @document.create(:phrase => 'Foo')

doc.phrase << 'bar'
      doc.phrase_changed?.should be_false

doc.phrase_will_change!
      doc.phrase_changed?.should be_true
      doc.phrase_change.should == ['Foobar', 'Foobar']

doc.phrase << '!'
      doc.phrase_changed?.should be_true
      doc.phrase_change.should == ['Foobar', 'Foobar!']
    end
  end

context "changing a foreign key through association" do
    should "mark changes" do
      project_class = Doc do
        key :name, String
      end

milestone_class = Doc do
        key :project_id, ObjectId
        key :name, String
      end
      milestone_class.belongs_to :project, :class => project_class

milestone = milestone_class.create(:name => 'Launch')
      milestone.project = project_class.create(:name => 'Harmony')
      milestone.changed?.should be_true
      milestone.changed.should == %w(project_id)
    end
  end

context "save with an invalid document" do
    should "not clear changes" do
      validated_class = Doc do
        key :name, String
        key :required, String, :required=>true
      end
      validated_doc = validated_class.new
      validated_doc.name = "I'm a changin"
      validated_doc.save
      validated_doc.changed?.should be_true

validated_doc.required = 1
      validated_doc.save
      validated_doc.changed?.should be_false
    end
  end

context "changing an already changed attribute" do
    should "preserve the original value" do
      doc = @document.create(:a=>"b")
      doc.a = "c"
      doc.a_change.should == ["b","c"]
      doc.a = "d"
      doc.a_change.should == ["b","d"]
    end
    should "reset changes when set back to the original value" do
      doc = @document.create(:a=>"b")
      doc.a = "c"
      doc.a = "b"
      doc.changed?.should be_false
    end
  end

context "reset_attribute!" do
    should "reset the attribute back to the previous value" do
      doc = @document.create(:a=>"b")
      doc.a = "c"
      doc.reset_a!
      doc.changed?.should be_false
      doc.a.should == "b"
    end
    should "reset the attribute back to the original value after several changes" do
      doc = @document.create(:a=>"b")
      doc.a = "c"
      doc.a = "d"
      doc.a = "e"
      doc.reset_a!
      doc.changed?.should be_false
      doc.a.should == "b"
    end
  end

context "previous_changes" do
    should "reflect previously committed change" do
      doc = @document.create(:a=>"b")
      doc.a = "c"
      changes = doc.changes
      doc.save!
      doc.previous_changes.should == changes
    end

should "not include attributes loaded from db" do
      doc = @document.create(:a => "b")
      @document.find(doc.id).previous_changes.should be_blank
    end
  end

context "Embedded documents" do
    setup do
      @edoc = EDoc('Duck') { key :name, String }
      @edoc.plugin MongoMapper::Plugins::Dirty
      @document = Doc('Long') { key :name, String }
      @document.many :ducks, :class=>@edoc
      @doc = @document.new
      @duck = @doc.ducks.build
    end

should "track changes" do
      @duck.name = "hi"
      @duck.changed?.should be_true
    end

should "clear changes when saved" do
      @duck.name = "hi"
      @duck.changed?.should be_true
      @duck.save!
      @duck.changed?.should_not be_true
    end

should "clear changes when the parent is saved" do
      @duck.name = "hi"
      @duck.changed?.should be_true
      @doc.save!
      @duck.changed?.should_not be_true
    end

context "with nested embedded documents" do
      setup do
        @inner_edoc = EDoc('Dong') {key :name, String}
        @inner_edoc.plugin MongoMapper::Plugins::Dirty
        @edoc.many :dongs, :class=>@inner_edoc
        @dong = @duck.dongs.build
      end

should "track changes" do
        @dong.name = "hi"
        @dong.changed?.should be_true
      end

should "clear changes when the root saves" do
        @dong.name = "hi"
        @dong.changed?.should be_true
        @doc.save!
        @dong.changed?.should be_false
      end

end

JezK

Edit File: test_dirty.rb

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