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import unittest
import IECore

class testReversedFrameList( unittest.TestCase ) :

	def test( self ) :

		r = IECore.ReversedFrameList( IECore.FrameRange( 1, 11, 2 ) )
		self.assertEqual( r.asList(), [ 11, 9, 7, 5, 3, 1 ] )

	def testParsing( self ) :

		r = IECore.FrameList.parse( "1-10r" )
		self.assertTrue( isinstance( r, IECore.ReversedFrameList ) )
		rr = list( range( 1, 11 ) )
		rr.reverse()
		self.assertEqual( r.asList(), rr )

		r = IECore.FrameList.parse( "1-4,5-10r" )
		self.assertTrue( isinstance( r, IECore.CompoundFrameList ) )
		self.assertEqual( r.asList(), [ 1, 2, 3, 4, 10, 9, 8, 7, 6, 5 ] )

		r = IECore.FrameList.parse( "(1-4,5-10)r" )
		self.assertTrue( isinstance( r, IECore.ReversedFrameList ) )
		self.assertEqual( r.asList(), [ 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 ] )

		r = IECore.FrameList.parse( "( 5-10 )r" )
		self.assertTrue( isinstance( r, IECore.ReversedFrameList ) )
		self.assertEqual( r.asList(), [ 10, 9, 8, 7, 6, 5 ] )

	def testStr( self ) :

		r = IECore.ReversedFrameList( IECore.FrameRange( 1, 11, 2 ) )
		self.assertEqual( str( r ), "1-11x2r" )

		r = IECore.ReversedFrameList( IECore.CompoundFrameList( [ IECore.FrameRange( 1, 10 ), IECore.FrameRange( 20, 30 ) ] )  )
		self.assertEqual( str( r ), "(1-10,20-30)r" )

		r = IECore.CompoundFrameList( [ IECore.FrameRange( 1, 10 ), IECore.ReversedFrameList( IECore.FrameRange( 20, 30 ) ) ] )
		self.assertEqual( str( r ), "1-10,20-30r" )

	def testRepr( self ) :

		import IECore

		r = IECore.ReversedFrameList( IECore.FrameRange( 1, 11, 2 ) )
		self.assertEqual( r, eval( repr( r ) ) )

		r = IECore.ReversedFrameList( IECore.CompoundFrameList( [ IECore.FrameRange( 1, 10 ), IECore.FrameRange( 20, 30 ) ] )  )
		self.assertEqual( r, eval( repr( r ) ) )

		r = IECore.CompoundFrameList( [ IECore.FrameRange( 1, 10 ), IECore.ReversedFrameList( IECore.FrameRange( 20, 30 ) ) ] )
		self.assertEqual( r, eval( repr( r ) ) )

	def testImpactOnOtherParsing( self ) :

		r = IECore.FrameList.parse( "(1-10)" )
		self.assertEqual( r.start, 1 )
		self.assertEqual( r.end, 10 )
		self.assertEqual( r.step, 1 )

		r = IECore.FrameList.parse( "( 1-10 )" )
		self.assertEqual( r.start, 1 )
		self.assertEqual( r.end, 10 )
		self.assertEqual( r.step, 1 )


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