require 'abstract_unit'
require 'fixtures/person'
require File.dirname(__FILE__) + '/fixtures/migrations/1_people_have_last_names'
require File.dirname(__FILE__) + '/fixtures/migrations/2_we_need_reminders'

if ActiveRecord::Base.connection.supports_migrations? 
  class Reminder < ActiveRecord::Base; end

  class MigrationTest < Test::Unit::TestCase
    self.use_transactional_fixtures = false

    def setup
    end

    def teardown
      ActiveRecord::Base.connection.initialize_schema_information
      ActiveRecord::Base.connection.update "UPDATE #{ActiveRecord::Migrator.schema_info_table_name} SET version = 0"

      Reminder.connection.drop_table("reminders") rescue nil
      Reminder.connection.drop_table("people_reminders") rescue nil
      Reminder.connection.drop_table("prefix_reminders_suffix") rescue nil
      Reminder.reset_column_information

      Person.connection.remove_column("people", "last_name") rescue nil
      Person.connection.remove_column("people", "bio") rescue nil
      Person.connection.remove_column("people", "age") rescue nil
      Person.connection.remove_column("people", "height") rescue nil
      Person.connection.remove_column("people", "birthday") rescue nil
      Person.connection.remove_column("people", "favorite_day") rescue nil
      Person.connection.remove_column("people", "male") rescue nil
      Person.connection.remove_column("people", "administrator") rescue nil
      Person.reset_column_information
    end

    def test_add_index
      Person.connection.add_column "people", "last_name", :string        
      Person.connection.add_column "people", "administrator", :boolean
      
      assert_nothing_raised { Person.connection.add_index("people", "last_name") }
      assert_nothing_raised { Person.connection.remove_index("people", "last_name") }

      assert_nothing_raised { Person.connection.add_index("people", ["last_name", "first_name"]) }
      assert_nothing_raised { Person.connection.remove_index("people", "last_name") }

      assert_nothing_raised { Person.connection.add_index("people", %w(last_name first_name administrator), :name => "named_admin") }
      assert_nothing_raised { Person.connection.remove_index("people", :name => "named_admin") }
    end

    def test_create_table_adds_id
      Person.connection.create_table :testings do |t|
        t.column :foo, :string
      end

      assert_equal %w(foo id),
        Person.connection.columns(:testings).map { |c| c.name }.sort
    ensure
      Person.connection.drop_table :testings rescue nil
    end

    def test_create_table_with_not_null_column
      Person.connection.create_table :testings do |t|
        t.column :foo, :string, :null => false
      end

      assert_raises(ActiveRecord::StatementInvalid) do
        Person.connection.execute "insert into testings (foo) values (NULL)"
      end
    ensure
      Person.connection.drop_table :testings rescue nil
    end

    def test_create_table_with_defaults
      Person.connection.create_table :testings do |t|
        t.column :one, :string, :default => "hello"
        t.column :two, :boolean, :default => true
        t.column :three, :boolean, :default => false
        t.column :four, :integer, :default => 1
      end

      columns = Person.connection.columns(:testings)
      one = columns.detect { |c| c.name == "one" }
      two = columns.detect { |c| c.name == "two" }
      three = columns.detect { |c| c.name == "three" }
      four = columns.detect { |c| c.name == "four" }

      assert_equal "hello", one.default
      if current_adapter?(:OCIAdapter)
        # Oracle doesn't support native booleans
        assert_equal true, two.default == 1
        assert_equal false, three.default != 0
      else
        assert_equal true, two.default
        assert_equal false, three.default
      end
      assert_equal 1, four.default

    ensure
      Person.connection.drop_table :testings rescue nil
    end
  
    # SQL Server will not allow you to add a NOT NULL column
    # to a table without specifying a default value, so the
    # following test must be skipped  
    unless current_adapter?(:SQLServerAdapter)
      def test_add_column_not_null_without_default
        Person.connection.create_table :testings do |t|
          t.column :foo, :string
        end
        Person.connection.add_column :testings, :bar, :string, :null => false
  
        assert_raises(ActiveRecord::StatementInvalid) do
          Person.connection.execute "insert into testings (foo, bar) values ('hello', NULL)"
        end
      ensure
        Person.connection.drop_table :testings rescue nil
      end
    end
    
    def test_add_column_not_null_with_default
      Person.connection.create_table :testings do |t|
        t.column :foo, :string
      end
      Person.connection.add_column :testings, :bar, :string, :null => false, :default => "default"

      assert_raises(ActiveRecord::StatementInvalid) do
        Person.connection.execute "insert into testings (foo, bar) values ('hello', NULL)"
      end
    ensure
      Person.connection.drop_table :testings rescue nil
    end
  
    def test_native_types
      Person.delete_all
      Person.connection.add_column "people", "last_name", :string
      Person.connection.add_column "people", "bio", :text
      Person.connection.add_column "people", "age", :integer
      Person.connection.add_column "people", "height", :float
      Person.connection.add_column "people", "birthday", :datetime
      Person.connection.add_column "people", "favorite_day", :date
      Person.connection.add_column "people", "male", :boolean
      assert_nothing_raised { Person.create :first_name => 'bob', :last_name => 'bobsen', :bio => "I was born ....", :age => 18, :height => 1.78, :birthday => 18.years.ago, :favorite_day => 10.days.ago, :male => true }
      bob = Person.find(:first)
        
      assert_equal bob.first_name, 'bob'
      assert_equal bob.last_name, 'bobsen'
      assert_equal bob.bio, "I was born ...."
      assert_equal bob.age, 18
      assert_equal bob.male?, true
    
      assert_equal String, bob.first_name.class
      assert_equal String, bob.last_name.class
      assert_equal String, bob.bio.class
      assert_equal Fixnum, bob.age.class
      assert_equal Time, bob.birthday.class

      if current_adapter?(:SQLServerAdapter) or current_adapter?(:OCIAdapter)
        # SQL Server and Oracle don't differentiate between date/time
        assert_equal Time, bob.favorite_day.class
      else
        assert_equal Date, bob.favorite_day.class
      end

      assert_equal TrueClass, bob.male?.class
    end

    def test_add_remove_single_field_using_string_arguments
      assert !Person.column_methods_hash.include?(:last_name)

      ActiveRecord::Migration.add_column 'people', 'last_name', :string

      Person.reset_column_information
      assert Person.column_methods_hash.include?(:last_name)
    
      ActiveRecord::Migration.remove_column 'people', 'last_name'

      Person.reset_column_information
      assert !Person.column_methods_hash.include?(:last_name)
    end

    def test_add_remove_single_field_using_symbol_arguments
      assert !Person.column_methods_hash.include?(:last_name)

      ActiveRecord::Migration.add_column :people, :last_name, :string

      Person.reset_column_information
      assert Person.column_methods_hash.include?(:last_name)

      ActiveRecord::Migration.remove_column :people, :last_name

      Person.reset_column_information
      assert !Person.column_methods_hash.include?(:last_name)
    end
    
    def test_add_rename
      Person.delete_all
           
      begin
        Person.connection.add_column "people", "girlfriend", :string      
        Person.create :girlfriend => 'bobette'      
      
        Person.connection.rename_column "people", "girlfriend", "exgirlfriend"
      
        Person.reset_column_information      
        bob = Person.find(:first)
      
        assert_equal "bobette", bob.exgirlfriend
      ensure
        Person.connection.remove_column("people", "girlfriend") rescue nil
        Person.connection.remove_column("people", "exgirlfriend") rescue nil
      end
      
    end
    
    def test_rename_column_using_symbol_arguments
      begin
        Person.connection.rename_column :people, :first_name, :nick_name
        Person.reset_column_information
        assert Person.column_names.include?("nick_name")
      ensure
        Person.connection.remove_column("people","nick_name")
        Person.connection.add_column("people","first_name", :string)
      end
    end
    
    def test_rename_column
      begin
        Person.connection.rename_column "people", "first_name", "nick_name"
        Person.reset_column_information
        assert Person.column_names.include?("nick_name")
      ensure
        Person.connection.remove_column("people","nick_name")
        Person.connection.add_column("people","first_name", :string)
      end
    end
    
    def test_rename_table
      begin
        ActiveRecord::Base.connection.create_table :octopuses do |t|
          t.column :url, :string
        end
        ActiveRecord::Base.connection.rename_table :octopuses, :octopi

        assert_nothing_raised do
          if current_adapter?(:OCIAdapter)
            # Oracle requires the explicit sequence for the pk
            ActiveRecord::Base.connection.execute "INSERT INTO octopi (id, url) VALUES (octopi_seq.nextval, 'http://www.foreverflying.com/octopus-black7.jpg')"
          else
            ActiveRecord::Base.connection.execute "INSERT INTO octopi (url) VALUES ('http://www.foreverflying.com/octopus-black7.jpg')"
          end
        end

        assert_equal 'http://www.foreverflying.com/octopus-black7.jpg', ActiveRecord::Base.connection.select_value("SELECT url FROM octopi WHERE id=1")

      ensure
        ActiveRecord::Base.connection.drop_table :octopuses rescue nil
        ActiveRecord::Base.connection.drop_table :octopi rescue nil
      end
    end

    def test_change_column
      Person.connection.add_column 'people', 'age', :integer
      old_columns = Person.connection.columns(Person.table_name, "#{name} Columns")
      assert old_columns.find { |c| c.name == 'age' and c.type == :integer }

      assert_nothing_raised { Person.connection.change_column "people", "age", :string }
      
      new_columns = Person.connection.columns(Person.table_name, "#{name} Columns")
      assert_nil new_columns.find { |c| c.name == 'age' and c.type == :integer }
      assert new_columns.find { |c| c.name == 'age' and c.type == :string }
    end    

    def test_change_column_with_new_default
      Person.connection.add_column "people", "administrator", :boolean, :default => 1
      Person.reset_column_information            
      assert Person.new.administrator?
      
      assert_nothing_raised { Person.connection.change_column "people", "administrator", :boolean, :default => 0 }
      Person.reset_column_information            
      assert !Person.new.administrator?
    end    

    def test_add_table
      assert !Reminder.table_exists?
      
      WeNeedReminders.up
    
      assert Reminder.create("content" => "hello world", "remind_at" => Time.now)
      assert_equal "hello world", Reminder.find(:first).content
    
      WeNeedReminders.down
      assert_raises(ActiveRecord::StatementInvalid) { Reminder.find(:first) }
    end

    def test_migrator
      assert !Person.column_methods_hash.include?(:last_name)
      assert !Reminder.table_exists?

      ActiveRecord::Migrator.up(File.dirname(__FILE__) + '/fixtures/migrations/')

      assert_equal 3, ActiveRecord::Migrator.current_version
      Person.reset_column_information
      assert Person.column_methods_hash.include?(:last_name)
      assert Reminder.create("content" => "hello world", "remind_at" => Time.now)
      assert_equal "hello world", Reminder.find(:first).content

      ActiveRecord::Migrator.down(File.dirname(__FILE__) + '/fixtures/migrations/')

      assert_equal 0, ActiveRecord::Migrator.current_version
      Person.reset_column_information
      assert !Person.column_methods_hash.include?(:last_name)
      assert_raises(ActiveRecord::StatementInvalid) { Reminder.find(:first) }
    end

    def test_migrator_one_up
      assert !Person.column_methods_hash.include?(:last_name)
      assert !Reminder.table_exists?
      
      ActiveRecord::Migrator.up(File.dirname(__FILE__) + '/fixtures/migrations/', 1)

      Person.reset_column_information
      assert Person.column_methods_hash.include?(:last_name)
      assert !Reminder.table_exists?

      ActiveRecord::Migrator.up(File.dirname(__FILE__) + '/fixtures/migrations/', 2)

      assert Reminder.create("content" => "hello world", "remind_at" => Time.now)
      assert_equal "hello world", Reminder.find(:first).content
    end
  
    def test_migrator_one_down
      ActiveRecord::Migrator.up(File.dirname(__FILE__) + '/fixtures/migrations/')
    
      ActiveRecord::Migrator.down(File.dirname(__FILE__) + '/fixtures/migrations/', 1)

      Person.reset_column_information
      assert Person.column_methods_hash.include?(:last_name)
      assert !Reminder.table_exists?
    end
  
    def test_migrator_one_up_one_down
      ActiveRecord::Migrator.up(File.dirname(__FILE__) + '/fixtures/migrations/', 1)
      ActiveRecord::Migrator.down(File.dirname(__FILE__) + '/fixtures/migrations/', 0)

      assert !Person.column_methods_hash.include?(:last_name)
      assert !Reminder.table_exists?
    end
    
    def test_migrator_going_down_due_to_version_target
      ActiveRecord::Migrator.up(File.dirname(__FILE__) + '/fixtures/migrations/', 1)
      ActiveRecord::Migrator.migrate(File.dirname(__FILE__) + '/fixtures/migrations/', 0)

      assert !Person.column_methods_hash.include?(:last_name)
      assert !Reminder.table_exists?

      ActiveRecord::Migrator.migrate(File.dirname(__FILE__) + '/fixtures/migrations/')

      Person.reset_column_information
      assert Person.column_methods_hash.include?(:last_name)
      assert Reminder.create("content" => "hello world", "remind_at" => Time.now)
      assert_equal "hello world", Reminder.find(:first).content
    end

    def test_schema_info_table_name
      ActiveRecord::Base.table_name_prefix = "prefix_"
      ActiveRecord::Base.table_name_suffix = "_suffix"
      Reminder.reset_table_name
      assert_equal "prefix_schema_info_suffix", ActiveRecord::Migrator.schema_info_table_name
      ActiveRecord::Base.table_name_prefix = ""
      ActiveRecord::Base.table_name_suffix = ""
      Reminder.reset_table_name
      assert_equal "schema_info", ActiveRecord::Migrator.schema_info_table_name
    ensure
      ActiveRecord::Base.table_name_prefix = ""
      ActiveRecord::Base.table_name_suffix = ""
    end
  
    def test_proper_table_name
      assert_equal "table", ActiveRecord::Migrator.proper_table_name('table')
      assert_equal "table", ActiveRecord::Migrator.proper_table_name(:table)
      assert_equal "reminders", ActiveRecord::Migrator.proper_table_name(Reminder)
      Reminder.reset_table_name
      assert_equal Reminder.table_name, ActiveRecord::Migrator.proper_table_name(Reminder)
  
      # Use the model's own prefix/suffix if a model is given
      ActiveRecord::Base.table_name_prefix = "ARprefix_"
      ActiveRecord::Base.table_name_suffix = "_ARsuffix"
      Reminder.table_name_prefix = 'prefix_'
      Reminder.table_name_suffix = '_suffix'
      Reminder.reset_table_name
      assert_equal "prefix_reminders_suffix", ActiveRecord::Migrator.proper_table_name(Reminder)
      Reminder.table_name_prefix = ''
      Reminder.table_name_suffix = ''
      Reminder.reset_table_name
      
      # Use AR::Base's prefix/suffix if string or symbol is given      
      ActiveRecord::Base.table_name_prefix = "prefix_"
      ActiveRecord::Base.table_name_suffix = "_suffix"
      Reminder.reset_table_name
      assert_equal "prefix_table_suffix", ActiveRecord::Migrator.proper_table_name('table')
      assert_equal "prefix_table_suffix", ActiveRecord::Migrator.proper_table_name(:table)
      ActiveRecord::Base.table_name_prefix = ""
      ActiveRecord::Base.table_name_suffix = ""
      Reminder.reset_table_name
    end  

    def test_add_drop_table_with_prefix_and_suffix
      assert !Reminder.table_exists?
      ActiveRecord::Base.table_name_prefix = 'prefix_'
      ActiveRecord::Base.table_name_suffix = '_suffix'
      Reminder.reset_table_name
      Reminder.reset_sequence_name
      WeNeedReminders.up
      assert Reminder.create("content" => "hello world", "remind_at" => Time.now)
      assert_equal "hello world", Reminder.find(:first).content

      WeNeedReminders.down
      assert_raises(ActiveRecord::StatementInvalid) { Reminder.find(:first) }
    ensure
      ActiveRecord::Base.table_name_prefix = ''
      ActiveRecord::Base.table_name_suffix = ''
      Reminder.reset_table_name
      Reminder.reset_sequence_name
    end

    def test_migrator_with_duplicates
      assert_raises(ActiveRecord::DuplicateMigrationVersionError) do
        ActiveRecord::Migrator.migrate(File.dirname(__FILE__) + '/fixtures/migrations_with_duplicate/', nil)
      end
    end
  end
end