Class ActiveRecord::AdapterTest < ActiveRecord::TestCase

# File activerecord/test/cases/adapter_test.rb, line 5
def setup
  @connection = ActiveRecord::Base.connection
end

# File activerecord/test/cases/adapter_test.rb, line 53
def test_charset
  assert_not_nil @connection.charset
  assert_not_equal 'character_set_database', @connection.charset
  assert_equal @connection.show_variable('character_set_database'), @connection.charset
end

# File activerecord/test/cases/adapter_test.rb, line 59
def test_collation
  assert_not_nil @connection.collation
  assert_not_equal 'collation_database', @connection.collation
  assert_equal @connection.show_variable('collation_database'), @connection.collation
end

# File activerecord/test/cases/adapter_test.rb, line 46
def test_current_database
  if @connection.respond_to?(:current_database)
    assert_equal ARTest.connection_config['arunit']['database'], @connection.current_database
  end
end

# File activerecord/test/cases/adapter_test.rb, line 146
def test_disable_referential_integrity
  assert_nothing_raised do
    @connection.disable_referential_integrity do
      # Oracle adapter uses prefetched primary key values from sequence and passes them to connection adapter insert method
      if @connection.prefetch_primary_key?
        id_value = @connection.next_sequence_value(@connection.default_sequence_name("fk_test_has_fk", "id"))
        @connection.execute "INSERT INTO fk_test_has_fk (id, fk_id) VALUES (#{id_value},0)"
      else
        @connection.execute "INSERT INTO fk_test_has_fk (fk_id) VALUES (0)"
      end
      # should deleted created record as otherwise disable_referential_integrity will try to enable contraints after executed block
      # and will fail (at least on Oracle)
      @connection.execute "DELETE FROM fk_test_has_fk"
    end
  end
end

# File activerecord/test/cases/adapter_test.rb, line 132
def test_foreign_key_violations_are_translated_to_specific_exception
  unless @connection.adapter_name == 'SQLite'
    assert_raises(ActiveRecord::InvalidForeignKey) do
      # Oracle adapter uses prefetched primary key values from sequence and passes them to connection adapter insert method
      if @connection.prefetch_primary_key?
        id_value = @connection.next_sequence_value(@connection.default_sequence_name("fk_test_has_fk", "id"))
        @connection.execute "INSERT INTO fk_test_has_fk (id, fk_id) VALUES (#{id_value},0)"
      else
        @connection.execute "INSERT INTO fk_test_has_fk (fk_id) VALUES (0)"
      end
    end
  end
end

# File activerecord/test/cases/adapter_test.rb, line 23
def test_indexes
  idx_name = "accounts_idx"

  if @connection.respond_to?(:indexes)
    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
    # OpenBase does not have the concept of a named index
    # Indexes are merely properties of columns.
    assert_equal idx_name, indexes.first.name unless current_adapter?(:OpenBaseAdapter)
    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, :name => idx_name) rescue nil
end

# File activerecord/test/cases/adapter_test.rb, line 69
def test_not_specifying_database_name_for_cross_database_selects
  begin
    assert_nothing_raised do
      ActiveRecord::Base.establish_connection(ActiveRecord::Base.configurations['arunit'].except(:database))

      config = ARTest.connection_config
      ActiveRecord::Base.connection.execute(
        "SELECT #{config['arunit']['database']}.pirates.*, #{config['arunit2']['database']}.courses.* "                "FROM #{config['arunit']['database']}.pirates, #{config['arunit2']['database']}.courses"
      )
    end
  ensure
    ActiveRecord::Base.establish_connection 'arunit'
  end
end

# File activerecord/test/cases/adapter_test.rb, line 108
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

# File activerecord/test/cases/adapter_test.rb, line 115
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_nothing_raised { sub.save! }
end

# File activerecord/test/cases/adapter_test.rb, line 65
def test_show_nonexistent_variable_returns_nil
  assert_nil @connection.show_variable('foo_bar_baz')
end

# File activerecord/test/cases/adapter_test.rb, line 86
def test_table_alias
  def @connection.test_table_alias_length() 10; end
  class << @connection
    alias_method :old_table_alias_length, :table_alias_length
    alias_method :table_alias_length,     :test_table_alias_length
  end

  assert_equal 'posts',      @connection.table_alias_for('posts')
  assert_equal 'posts_comm', @connection.table_alias_for('posts_comments')
  assert_equal 'dbo_posts',  @connection.table_alias_for('dbo.posts')

  class << @connection
    remove_method :table_alias_length
    alias_method :table_alias_length, :old_table_alias_length
  end
end

# File activerecord/test/cases/adapter_test.rb, line 17
def test_table_exists?
  assert @connection.table_exists?("accounts")
  assert !@connection.table_exists?("nonexistingtable")
  assert !@connection.table_exists?(nil)
end

# File activerecord/test/cases/adapter_test.rb, line 9
def test_tables
  tables = @connection.tables
  assert tables.include?("accounts")
  assert tables.include?("authors")
  assert tables.include?("tasks")
  assert tables.include?("topics")
end

# File activerecord/test/cases/adapter_test.rb, line 125
def test_uniqueness_violations_are_translated_to_specific_exception
  @connection.execute "INSERT INTO subscribers(nick) VALUES('me')"
  assert_raises(ActiveRecord::RecordNotUnique) do
    @connection.execute "INSERT INTO subscribers(nick) VALUES('me')"
  end
end