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import unittest
import imath
import os
import IECore
import IECoreScene

class IDXReaderTest( unittest.TestCase ) :

	def testConstruction( self ) :

		r = IECoreScene.IDXReader()
		self.assertEqual( r["fileName"].getTypedValue(), "" )

		r = IECoreScene.IDXReader( os.path.join( "test", "IECore", "data", "idxFiles", "test.idx" ) )
		self.assertEqual( r["fileName"].getTypedValue(), os.path.join( "test", "IECore", "data", "idxFiles", "test.idx" ) )

	def testReading( self ) :

		r = IECoreScene.IDXReader( os.path.join( "test", "IECore", "data", "idxFiles", "test.idx" ) )

		o = r.read()

		self.assertTrue( o.isInstanceOf( IECoreScene.Group.staticTypeId() ) )

		self.assertEqual( len(o.children()), 1 )

		c = o.children()[0]

		self.assertEqual( c.numPoints, 6 )

		# We're not order preserving

		for k in [ "000", "001", "002", "003", "004", "005" ] :
			self.assertTrue( k in c["PointID"].data )

		for p in [
				imath.V3f( 63.204863, 0.831837, -33.969296 ),
				imath.V3f( 62.345470, 0.707662, -34.099882 ),
				imath.V3f( 63.104346, 0.708060, -34.025762 ),
				imath.V3f( 63.096101, -0.973316, -34.031914 ),
				imath.V3f( 62.338136, -0.974567, -34.112893 ),
				imath.V3f( 54.252821, 0.716216, -34.849839 ),
			]:
				self.assertTrue( p in c["P"].data )

	def testCanRead( self ) :

		self.assertTrue( IECoreScene.IDXReader.canRead( os.path.join( "test", "IECore", "data", "idxFiles", "test.idx" ) ) )
		self.assertFalse( IECoreScene.IDXReader.canRead( os.path.join( "test", "IECore", "data", "cobFiles", "ball.cob" ) ) )

	def testRegistration( self ) :

		r = IECore.Reader.create( os.path.join( "test", "IECore", "data", "idxFiles", "test.idx" ) )
		self.assertTrue( isinstance( r, IECoreScene.IDXReader ) )

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

