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require 'cases/helper'
require 'pathname'

module ActiveRecord
  class SqliteDBCreateTest < ActiveRecord::TestCase
    def setup
      @database      = 'db_create.sqlite3'
      @connection    = stub :connection
      @configuration = {
        'adapter'  => 'sqlite3',
        'database' => @database
      }

      File.stubs(:exist?).returns(false)
      ActiveRecord::Base.stubs(:connection).returns(@connection)
      ActiveRecord::Base.stubs(:establish_connection).returns(true)
    end

    def test_db_checks_database_exists
      File.expects(:exist?).with(@database).returns(false)

      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
    end

    def test_db_create_when_file_exists
      File.stubs(:exist?).returns(true)

      $stderr.expects(:puts).with("#{@database} already exists")

      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
    end

    def test_db_create_with_file_does_nothing
      File.stubs(:exist?).returns(true)
      $stderr.stubs(:puts).returns(nil)

      ActiveRecord::Base.expects(:establish_connection).never

      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
    end

    def test_db_create_establishes_a_connection
      ActiveRecord::Base.expects(:establish_connection).with(@configuration)

      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
    end

    def test_db_create_with_error_prints_message
      ActiveRecord::Base.stubs(:establish_connection).raises(Exception)

      $stderr.stubs(:puts).returns(true)
      $stderr.expects(:puts).
        with("Couldn't create database for #{@configuration.inspect}")

      ActiveRecord::Tasks::DatabaseTasks.create @configuration, '/rails/root'
    end
  end

  class SqliteDBDropTest < ActiveRecord::TestCase
    def setup
      @database      = "db_create.sqlite3"
      @path          = stub(:to_s => '/absolute/path', :absolute? => true)
      @configuration = {
        'adapter'  => 'sqlite3',
        'database' => @database
      }

      Pathname.stubs(:new).returns(@path)
      File.stubs(:join).returns('/former/relative/path')
      FileUtils.stubs(:rm).returns(true)
    end

    def test_creates_path_from_database
      Pathname.expects(:new).with(@database).returns(@path)

      ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
    end

    def test_removes_file_with_absolute_path
      File.stubs(:exist?).returns(true)
      @path.stubs(:absolute?).returns(true)

      FileUtils.expects(:rm).with('/absolute/path')

      ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
    end

    def test_generates_absolute_path_with_given_root
      @path.stubs(:absolute?).returns(false)

      File.expects(:join).with('/rails/root', @path).
        returns('/former/relative/path')

      ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
    end

    def test_removes_file_with_relative_path
      File.stubs(:exist?).returns(true)
      @path.stubs(:absolute?).returns(false)

      FileUtils.expects(:rm).with('/former/relative/path')

      ActiveRecord::Tasks::DatabaseTasks.drop @configuration, '/rails/root'
    end
  end

  class SqliteDBCharsetTest < ActiveRecord::TestCase
    def setup
      @database      = 'db_create.sqlite3'
      @connection    = stub :connection
      @configuration = {
        'adapter'  => 'sqlite3',
        'database' => @database
      }

      File.stubs(:exist?).returns(false)
      ActiveRecord::Base.stubs(:connection).returns(@connection)
      ActiveRecord::Base.stubs(:establish_connection).returns(true)
    end

    def test_db_retrieves_charset
      @connection.expects(:encoding)
      ActiveRecord::Tasks::DatabaseTasks.charset @configuration, '/rails/root'
    end
  end

  class SqliteDBCollationTest < ActiveRecord::TestCase
    def setup
      @database      = 'db_create.sqlite3'
      @connection    = stub :connection
      @configuration = {
        'adapter'  => 'sqlite3',
        'database' => @database
      }

      File.stubs(:exist?).returns(false)
      ActiveRecord::Base.stubs(:connection).returns(@connection)
      ActiveRecord::Base.stubs(:establish_connection).returns(true)
    end

    def test_db_retrieves_collation
      assert_raise NoMethodError do
        ActiveRecord::Tasks::DatabaseTasks.collation @configuration, '/rails/root'
      end
    end
  end

  class SqliteStructureDumpTest < ActiveRecord::TestCase
    def setup
      @database      = "db_create.sqlite3"
      @configuration = {
        'adapter'  => 'sqlite3',
        'database' => @database
      }
    end

    def test_structure_dump
      dbfile   = @database
      filename = "awesome-file.sql"

      ActiveRecord::Tasks::DatabaseTasks.structure_dump @configuration, filename, '/rails/root'
      assert File.exists?(dbfile)
      assert File.exists?(filename)
    ensure
      FileUtils.rm_f(filename)
      FileUtils.rm_f(dbfile)
    end
  end

  class SqliteStructureLoadTest < ActiveRecord::TestCase
    def setup
      @database      = "db_create.sqlite3"
      @configuration = {
        'adapter'  => 'sqlite3',
        'database' => @database
      }
    end

    def test_structure_load
      dbfile   = @database
      filename = "awesome-file.sql"

      open(filename, 'w') { |f| f.puts("select datetime('now', 'localtime');") }
      ActiveRecord::Tasks::DatabaseTasks.structure_load @configuration, filename, '/rails/root'
      assert File.exists?(dbfile)
    ensure
      FileUtils.rm_f(filename)
      FileUtils.rm_f(dbfile)
    end
  end
end