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require "cases/helper"
module ActiveRecord
module ConnectionAdapters
class ConnectionHandlerTest < ActiveRecord::TestCase
def setup
@klass = Class.new(Base) { def self.name; 'klass'; end }
@subklass = Class.new(@klass) { def self.name; 'subklass'; end }
@handler = ConnectionHandler.new
@pool = @handler.establish_connection(@klass, Base.connection_pool.spec)
end
def test_retrieve_connection
assert @handler.retrieve_connection(@klass)
end
def test_active_connections?
assert !@handler.active_connections?
assert @handler.retrieve_connection(@klass)
assert @handler.active_connections?
@handler.clear_active_connections!
assert !@handler.active_connections?
end
def test_retrieve_connection_pool_with_ar_base
assert_nil @handler.retrieve_connection_pool(ActiveRecord::Base)
end
def test_retrieve_connection_pool
assert_not_nil @handler.retrieve_connection_pool(@klass)
end
def test_retrieve_connection_pool_uses_superclass_when_no_subclass_connection
assert_not_nil @handler.retrieve_connection_pool(@subklass)
end
def test_retrieve_connection_pool_uses_superclass_pool_after_subclass_establish_and_remove
sub_pool = @handler.establish_connection(@subklass, Base.connection_pool.spec)
assert_same sub_pool, @handler.retrieve_connection_pool(@subklass)
@handler.remove_connection @subklass
assert_same @pool, @handler.retrieve_connection_pool(@subklass)
end
def test_connection_pools
assert_equal([@pool], @handler.connection_pools)
end
if Process.respond_to?(:fork)
def test_connection_pool_per_pid
object_id = ActiveRecord::Base.connection.object_id
rd, wr = IO.pipe
rd.binmode
wr.binmode
pid = fork {
rd.close
wr.write Marshal.dump ActiveRecord::Base.connection.object_id
wr.close
exit!
}
wr.close
Process.waitpid pid
assert_not_equal object_id, Marshal.load(rd.read)
rd.close
end
def test_retrieve_connection_pool_copies_schema_cache_from_ancestor_pool
@pool.schema_cache = @pool.connection.schema_cache
@pool.schema_cache.add('posts')
rd, wr = IO.pipe
rd.binmode
wr.binmode
pid = fork {
rd.close
pool = @handler.retrieve_connection_pool(@klass)
wr.write Marshal.dump pool.schema_cache.size
wr.close
exit!
}
wr.close
Process.waitpid pid
assert_equal @pool.schema_cache.size, Marshal.load(rd.read)
rd.close
end
end
end
end
end
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