text: 
  import unittest, os, sys
  import PyOpenColorIO as OCIO
  
  class ConstantsTest(unittest.TestCase):
      
      def test_interface(self):
          
          # LoggingLevel
          self.assertEqual(OCIO.Constants.LOGGING_LEVEL_NONE, "none")
          self.assertEqual(OCIO.Constants.LOGGING_LEVEL_WARNING, "warning")
          self.assertEqual(OCIO.Constants.LOGGING_LEVEL_INFO, "info")
          self.assertEqual(OCIO.Constants.LOGGING_LEVEL_DEBUG, "debug")
          self.assertEqual(OCIO.Constants.LOGGING_LEVEL_UNKNOWN, "unknown")
          
          # TransformDirection
          self.assertEqual(OCIO.Constants.TRANSFORM_DIR_UNKNOWN, "unknown")
          self.assertEqual(OCIO.Constants.TRANSFORM_DIR_FORWARD, "forward")
          self.assertEqual(OCIO.Constants.TRANSFORM_DIR_INVERSE, "inverse")
          self.assertEqual(OCIO.Constants.GetInverseTransformDirection(OCIO.Constants.TRANSFORM_DIR_UNKNOWN),
              OCIO.Constants.TRANSFORM_DIR_UNKNOWN)
          self.assertEqual(OCIO.Constants.GetInverseTransformDirection(OCIO.Constants.TRANSFORM_DIR_FORWARD),
              OCIO.Constants.TRANSFORM_DIR_INVERSE)
          self.assertEqual(OCIO.Constants.GetInverseTransformDirection(OCIO.Constants.TRANSFORM_DIR_INVERSE),
              OCIO.Constants.TRANSFORM_DIR_FORWARD)
          
          # ColorSpaceDirection
          self.assertEqual(OCIO.Constants.COLORSPACE_DIR_UNKNOWN, "unknown")
          self.assertEqual(OCIO.Constants.COLORSPACE_DIR_TO_REFERENCE, "to_reference")
          self.assertEqual(OCIO.Constants.COLORSPACE_DIR_FROM_REFERENCE, "from_reference")
          
          # BitDepth
          self.assertEqual(OCIO.Constants.BIT_DEPTH_UNKNOWN, "unknown")
          self.assertEqual(OCIO.Constants.BIT_DEPTH_UINT8, "8ui")
          self.assertEqual(OCIO.Constants.BIT_DEPTH_UINT10, "10ui")
          self.assertEqual(OCIO.Constants.BIT_DEPTH_UINT12, "12ui")
          self.assertEqual(OCIO.Constants.BIT_DEPTH_UINT14, "14ui")
          self.assertEqual(OCIO.Constants.BIT_DEPTH_UINT16, "16ui")
          self.assertEqual(OCIO.Constants.BIT_DEPTH_UINT32, "32ui")
          self.assertEqual(OCIO.Constants.BIT_DEPTH_F16, "16f")
          self.assertEqual(OCIO.Constants.BIT_DEPTH_F32, "32f")
          
          # Allocation
          self.assertEqual(OCIO.Constants.ALLOCATION_UNKNOWN, "unknown")
          self.assertEqual(OCIO.Constants.ALLOCATION_UNIFORM, "uniform")
          self.assertEqual(OCIO.Constants.ALLOCATION_LG2, "lg2")
          
          # Interpolation
          self.assertEqual(OCIO.Constants.INTERP_UNKNOWN, "unknown")
          self.assertEqual(OCIO.Constants.INTERP_NEAREST, "nearest")
          self.assertEqual(OCIO.Constants.INTERP_LINEAR, "linear")
          self.assertEqual(OCIO.Constants.INTERP_TETRAHEDRAL, "tetrahedral")
          self.assertEqual(OCIO.Constants.INTERP_BEST, "best")
          
          # GpuLanguage
          self.assertEqual(OCIO.Constants.GPU_LANGUAGE_UNKNOWN, "unknown")
          self.assertEqual(OCIO.Constants.GPU_LANGUAGE_CG, "cg")
          self.assertEqual(OCIO.Constants.GPU_LANGUAGE_GLSL_1_0, "glsl_1.0")
          self.assertEqual(OCIO.Constants.GPU_LANGUAGE_GLSL_1_3, "glsl_1.3")
          
          # EnvironmentMode
          self.assertEqual(OCIO.Constants.ENV_ENVIRONMENT_UNKNOWN, "unknown")
          self.assertEqual(OCIO.Constants.ENV_ENVIRONMENT_LOAD_PREDEFINED, "loadpredefined")
          self.assertEqual(OCIO.Constants.ENV_ENVIRONMENT_LOAD_ALL, "loadall")
          
          # Roles
          self.assertEqual(OCIO.Constants.ROLE_DEFAULT, "default")
          self.assertEqual(OCIO.Constants.ROLE_REFERENCE, "reference")
          self.assertEqual(OCIO.Constants.ROLE_DATA, "data")
          self.assertEqual(OCIO.Constants.ROLE_COLOR_PICKING, "color_picking")
          self.assertEqual(OCIO.Constants.ROLE_SCENE_LINEAR, "scene_linear")
          self.assertEqual(OCIO.Constants.ROLE_COMPOSITING_LOG, "compositing_log")
          self.assertEqual(OCIO.Constants.ROLE_COLOR_TIMING, "color_timing")
          self.assertEqual(OCIO.Constants.ROLE_TEXTURE_PAINT, "texture_paint")
          self.assertEqual(OCIO.Constants.ROLE_MATTE_PAINT, "matte_paint")
  
  