def testUseUsesTheShaderProgram(self, mockGl):
program = ShaderProgram()
program.getLinkStatus = lambda: True
program.use()
self.assertEquals(mockGl.glUseProgram.call_args, ((program.id,), {}))
def testUseRaisesOnLinkFailure(self):
program = ShaderProgram()
program.getLinkStatus = lambda: False
program.getInfoLog = lambda: 'linkerror'
try:
program.use()
self.fail('should raise')
except LinkError, e:
self.assertTrue('linkerror' in str(e))
def testUseCreatesProgram(self, mockGl):
mockGl.glCreateProgram.return_value = 123
program = ShaderProgram()
program.getLinkStatus = lambda: True
program.use()
self.assertTrue(mockGl.glCreateProgram.called)
self.assertEquals(program.id, 123)
def testUseReturnsConcatenatedMessages(self):
shader1 = Mock()
shader2 = Mock()
shader1.getInfoLog = lambda: 's1'
shader2.getInfoLog = lambda: 's2'
program = ShaderProgram(shader1, shader2)
program.getInfoLog = lambda: 'p0'
program.getLinkStatus = lambda: True
message = program.use()
self.assertEquals(message, 's1\ns2\np0')
def testGetLinkStatus(self):
data = [
(gl.GL_TRUE, True),
(gl.GL_FALSE, False),
]
for getReturn, expected in data:
program = ShaderProgram()
program._get = Mock(return_value=getReturn)
actual = program.getLinkStatus()
self.assertEquals(program._get.call_args,
((gl.GL_LINK_STATUS,), {}))
self.assertEquals(actual, expected)
self.assertEquals(type(actual), type(expected))
def testUseCompilesAndAttachesShaders(self, mockGl):
shader1 = Mock()
shader2 = Mock()
program = ShaderProgram(shader1, shader2)
program.id = 123
program._getMessage = DoNothing
program.getLinkStatus = lambda: True
program.use()
self.assertEquals(shader1.compile.call_args, (tuple(), {}))
self.assertEquals(shader2.compile.call_args, (tuple(), {}))
self.assertEquals(mockGl.glAttachShader.call_args_list, [
((program.id, shader1.id), {}),
((program.id, shader2.id), {}),
])
