adapter_test.rb

require 'abstract_unit'

class AdapterTest < Test::Unit::TestCase
  def setup
    @connection = ActiveRecord::Base.connection
  end

  def test_tables
    if @connection.respond_to?(:tables)
      tables = @connection.tables
      assert tables.include?("accounts")
      assert tables.include?("authors")
      assert tables.include?("tasks")
      assert tables.include?("topics")
    else
      warn "#{@connection.class} does not respond to #tables"
    end
  end

  def test_indexes
    if @connection.respond_to?(:indexes)
      idx_name = "accounts_idx"
      indexes = @connection.indexes("accounts")
      assert indexes.empty?

      @connection.add_index :accounts, :firm_id, :name => idx_name
      indexes = @connection.indexes("accounts")
      assert_equal "accounts", indexes.first.table
      assert_equal idx_name, indexes.first.name
      assert !indexes.first.unique
      assert_equal ["firm_id"], indexes.first.columns
    else
      warn "#{@connection.class} does not respond to #indexes"
    end

  ensure
    @connection.remove_index :accounts, :firm_id rescue nil
  end

  # test resetting sequences in odd tables in postgreSQL
  if ActiveRecord::Base.connection.respond_to?(:reset_pk_sequence!)
    require 'fixtures/movie'
    require 'fixtures/subscriber'
    def test_reset_empty_table_with_custom_pk
      Movie.delete_all
      Movie.connection.reset_pk_sequence! 'movies'
      assert_equal 1, Movie.create(:name => 'fight club').id
    end

    def test_reset_table_with_non_integer_pk
      Subscriber.delete_all
      Subscriber.connection.reset_pk_sequence! 'subscribers'

      sub = Subscriber.new(:name => 'robert drake')
      sub.id = 'bob drake'
      assert sub.save!
    end
  end
end