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import os
import unittest
from pathlib import Path
import pywavefront.material
from utils import fixture
class TestMaterial(unittest.TestCase):
def setUp(self):
# Append current path to locate files
self.material = pywavefront.material.Material(fixture('material'))
self.material.set_texture(str(fixture('4x4.png')), '')
self.material.set_texture_ambient(str(fixture('4x4.png')), '')
def testSetTexture(self):
"""Running set_texture should set a texture."""
self.assertEqual(self.material.texture.__class__,
pywavefront.texture.Texture)
self.assertEqual(self.material.texture_ambient.__class__,
pywavefront.texture.Texture)
self.assertEqual(self.material.texture.path, str(fixture('4x4.png')))
self.assertEqual(self.material.texture_ambient.path, str(fixture('4x4.png')))
def testUnsetTexture(self):
"""Running unset_texture should set texture to None."""
self.material.unset_texture()
self.assertEqual(self.material.texture, None)
def testPadLight(self):
"""pad_light should return known values."""
self.assertEqual(self.material.pad_light([1.]),
[1., 0., 0., 0.])
def testSetAlpha(self):
"""set_alpha should set known values."""
self.material.set_alpha(0)
self.assertEqual(self.material.diffuse[3], 0.)
self.assertEqual(self.material.ambient[3], 0.)
self.assertEqual(self.material.specular[3], 0.)
self.assertEqual(self.material.emissive[3], 0.)
def testSetDiffuse(self):
"""set_diffuse should set known values."""
self.material.set_diffuse([1, 0])
self.assertEqual(self.material.diffuse, [1., 0., 0., 0.])
def testSetAmbient(self):
"""set_ambient should set known values."""
self.material.set_ambient([1, 0, 0.5, 0.2])
self.assertEqual(self.material.ambient, [1., 0., 0.5, 0.2])
def testSetSpecular(self):
"""set_specular should set known values."""
self.material.set_specular()
self.assertEqual(self.material.specular, [0., 0., 0., 0.])
def testSetEmissive(self):
"""set_emissive should set known values."""
self.material.set_emissive()
self.assertEqual(self.material.emissive, [0., 0., 0., 0.])
def testTransparency(self):
self.assertEqual(self.material.transparency, 1.0)
class TestInvalidMaterial(unittest.TestCase):
def test_missing_texture(self):
"""Running set_texture with a nonexistent file should raise an exception."""
material = pywavefront.material.Material('material')
material.set_texture('missing.file.do.not.create', '')
self.assertFalse(material.texture.exists())
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