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# -*- coding: utf-8 -*-
require "cases/helper"
require 'support/connection_helper'
require 'active_record/base'
require 'active_record/connection_adapters/postgresql_adapter'
module PostgresqlCompositeBehavior
include ConnectionHelper
class PostgresqlComposite < ActiveRecord::Base
self.table_name = "postgresql_composites"
end
def setup
super
@connection = ActiveRecord::Base.connection
@connection.transaction do
@connection.execute <<-SQL
CREATE TYPE full_address AS
(
city VARCHAR(90),
street VARCHAR(90)
);
SQL
@connection.create_table('postgresql_composites') do |t|
t.column :address, :full_address
end
end
end
def teardown
super
@connection.execute 'DROP TABLE IF EXISTS postgresql_composites'
@connection.execute 'DROP TYPE IF EXISTS full_address'
reset_connection
PostgresqlComposite.reset_column_information
end
end
# Composites are mapped to `OID::Identity` by default. The user is informed by a warning like:
# "unknown OID 5653508: failed to recognize type of 'address'. It will be treated as String."
# To take full advantage of composite types, we suggest you register your own +OID::Type+.
# See PostgresqlCompositeWithCustomOIDTest
class PostgresqlCompositeTest < ActiveRecord::TestCase
include PostgresqlCompositeBehavior
def test_column
ensure_warning_is_issued
column = PostgresqlComposite.columns_hash["address"]
assert_nil column.type
assert_equal "full_address", column.sql_type
assert_not column.number?
assert_not column.text?
assert_not column.binary?
assert_not column.array
end
def test_composite_mapping
ensure_warning_is_issued
@connection.execute "INSERT INTO postgresql_composites VALUES (1, ROW('Paris', 'Champs-Élysées'));"
composite = PostgresqlComposite.first
assert_equal "(Paris,Champs-Élysées)", composite.address
composite.address = "(Paris,Rue Basse)"
composite.save!
assert_equal '(Paris,"Rue Basse")', composite.reload.address
end
private
def ensure_warning_is_issued
warning = capture(:stderr) do
PostgresqlComposite.columns_hash
end
assert_match(/unknown OID \d+: failed to recognize type of 'address'\. It will be treated as String\./, warning)
end
end
class PostgresqlCompositeWithCustomOIDTest < ActiveRecord::TestCase
include PostgresqlCompositeBehavior
class FullAddressType
def type; :full_address end
def type_cast(value)
if value =~ /\("?([^",]*)"?,"?([^",]*)"?\)/
FullAddress.new($1, $2)
end
end
def type_cast_for_write(value)
"(#{value.city},#{value.street})"
end
end
FullAddress = Struct.new(:city, :street)
def setup
super
@registration = ActiveRecord::ConnectionAdapters::PostgreSQLAdapter::OID
@registration.register_type "full_address", FullAddressType.new
end
def teardown
super
# there is currently no clean way to unregister a OID::Type
@registration::NAMES.delete("full_address")
end
def test_column
column = PostgresqlComposite.columns_hash["address"]
assert_equal :full_address, column.type
assert_equal "full_address", column.sql_type
assert_not column.number?
assert_not column.text?
assert_not column.binary?
assert_not column.array
end
def test_composite_mapping
@connection.execute "INSERT INTO postgresql_composites VALUES (1, ROW('Paris', 'Champs-Élysées'));"
composite = PostgresqlComposite.first
assert_equal "Paris", composite.address.city
assert_equal "Champs-Élysées", composite.address.street
composite.address = FullAddress.new("Paris", "Rue Basse")
skip "Saving with custom OID type is currently not supported."
composite.save!
assert_equal 'Paris', composite.reload.address.city
assert_equal 'Rue Basse', composite.reload.address.street
end
end
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