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import unittest

import IECore

class derived( IECore.Parameterised ):

	def __init__( self ):
		self.objectAttribute1 = 1
		IECore.Parameterised.__init__( self, "description" )
		a = self.parameters()
		self.objectAttribute2 = 2
		a.addParameter( IECore.IntParameter( "number", "number parameter", 0 ) )

class TestParameterised( unittest.TestCase ) :

	def testSubclass( self ) :
		""" Test Parameterised subclassing """
		b = derived()

	def testUserData( self ) :

		a = IECore.Parameterised( "description" )
		self.assertEqual( a.userData(), IECore.CompoundObject() )

	def testSmartAssignment( self ):

		b = derived()
		b.anotherAttribute = [ 1, "lala", 1.2 ]
		b.objectAttribute1 = 2
		self.assert_( isinstance( b.anotherAttribute, list ) )
		self.assertEqual( b.objectAttribute1, 2 )
		b["number"] = 30
		self.assertEqual( b["number"].getTypedValue(), 30 )

	def testAttributeAccessRemoval( self ) :

		b = derived()

		self.assert_( hasattr( b, "objectAttribute1" ) )
		self.failIf( hasattr( b, "doesNotExist" ) )
		self.assertEqual( b.objectAttribute1, 1 )

		self.assertRaises( AttributeError, getattr, b, "number" )
		b.number = 10
		self.assertEqual( b.number, 10 )
		self.assertEqual( b["number"].getNumericValue(), 0 )

if __name__ == "__main__":
        unittest.main()
