def test_Variable():
# Test init fail
assert_raises(TypeError, Variable) # no args
assert_raises(TypeError, Variable, 3) # wrong type
assert_raises(TypeError, Variable, "name", "str") # wrong type
assert_raises(ValueError, Variable, 'bla bla') # need correct vtype
assert_raises(ValueError, Variable, 'uniform b l a') # too many
# Test init success
var = Variable('uniform float bla') # Finally
assert_equal(var.name, 'bla')
assert_equal(var.dtype, 'float')
assert_equal(var.vtype, 'uniform')
assert var.value is None
# test assign new value
var.value = 10.
assert_equal(var.dtype, 'float') # type is locked; won't change
# test name-only init
var = Variable('bla') # Finally
assert_equal(var.name, 'bla')
assert_equal(var.dtype, None)
assert_equal(var.vtype, None)
assert var.value is None
# test assign new value
var.value = 10
assert_equal(var.dtype, 'int')
assert_equal(var.vtype, 'uniform')
assert_equal(var.value, 10)
# test init with value
var = Variable('bla', (1, 2, 3)) # Also valid
assert_equal(var.name, 'bla')
assert_equal(var.dtype, 'vec3')
assert_equal(var.vtype, 'uniform')
assert_equal(var.value, (1, 2, 3))
# Test value
#var = Variable('uniform float bla', data) # Also valid
#assert_equal(var.value, data)
#var.value = 3
#assert_equal(var.value, 3)
# Test repr
var = Variable('uniform float bla')
assert_in('uniform float bla', var.compile())
# Test injection, definition, dependencies
assert_equal(var.expression({var: 'xxx'}), 'xxx')
assert_equal(var.definition({var: 'xxx'}, ('120', ''), None),
'uniform float xxx;')
assert_in(var, var.dependencies())
# Renaming
var = Variable('uniform float bla')
assert_equal(var.name, 'bla')
var.name = 'foo'
assert_equal(var.name, 'foo')
def test_function_changed():
ch = []
class C(object):
def _dep_changed(self, dep, **kwargs):
ch.append(dep)
ch_obj = C()
def assert_changed(*objs):
assert set(ch) == set(objs)
while ch:
ch.pop()
fun1 = Function('void main(){$var1; $var2;}')
fun1._dependents[ch_obj] = None
fun1['var1'] = 'x'
fun1['var2'] = 'y'
assert_changed(fun1)
fun1['var1'] = 'z'
assert_changed(fun1)
# same value; should result in no change events
fun1['var1'] = 'z'
assert_changed()
fun1['var1'] = 0.5
var1 = fun1['var1']
var1._dependents[ch_obj] = None
assert_changed(fun1)
var1.name = 'xxx'
assert_changed(fun1, var1)
# changing type requires code change
var1.value = 7
assert_changed(fun1, var1)
# changing value (but not type) requires no code changes
var1.value = 6
assert_changed()
# test variable disconnect
fun1['var1'] = Variable('var1', 7)
var2 = fun1['var1']
var2._dependents[ch_obj] = None
# assert_changed(fun1)
# var2 is now connected
var2.value = (1, 2, 3, 4)
assert_changed(fun1, var2)
# ..but var1 no longer triggers fun1.changed
assert_changed()
var1.value = 0.5
assert_changed(var1)
# test expressions
fun2 = Function('float fn(float x){return $var1 + x;}')
fun3 = Function('float fn(float x){return $var1 + x;}')
exp1 = fun2(fun3(0.5))
fun1['var2'] = exp1
assert_changed(fun1)
fun2._dependents[ch_obj] = None
fun3._dependents[ch_obj] = None
exp1._dependents[ch_obj] = None
fun2['var1'] = 'x'
assert_changed(fun1, fun2, exp1)
fun3['var1'] = 'x'
assert_changed(fun1, fun3, exp1)
# test disconnect
fun1['var2'] = fun2
assert_changed(fun1)
# triggers change
fun2['var1'] = 0.9
assert_changed(fun1, fun2, exp1)
# no longer triggers change
fun3['var1'] = 0.9
assert_changed(fun3, exp1)
def test_Variable():
# Test init fail
assert_raises(TypeError, Variable) # no args
assert_raises(TypeError, Variable, 3) # wrong type
assert_raises(TypeError, Variable, "name", "str") # wrong type
assert_raises(ValueError, Variable, 'bla bla') # need correct vtype
assert_raises(ValueError, Variable, 'uniform b l a') # too many
# Test init success
var = Variable('uniform float bla') # Finally
assert_equal(var.name, 'bla')
assert_equal(var.dtype, 'float')
assert_equal(var.vtype, 'uniform')
assert var.value is None
# test assign new value
var.value = 10.
assert_equal(var.dtype, 'float') # type is locked; won't change
# test name-only init
var = Variable('bla') # Finally
assert_equal(var.name, 'bla')
assert_equal(var.dtype, None)
assert_equal(var.vtype, None)
assert var.value is None
# test assign new value
var.value = 10
assert_equal(var.dtype, 'int')
assert_equal(var.vtype, 'uniform')
assert_equal(var.value, 10)
# test init with value
var = Variable('bla', (1, 2, 3)) # Also valid
assert_equal(var.name, 'bla')
assert_equal(var.dtype, 'vec3')
assert_equal(var.vtype, 'uniform')
assert_equal(var.value, (1, 2, 3))
# Test value
#var = Variable('uniform float bla', data) # Also valid
#assert_equal(var.value, data)
#var.value = 3
#assert_equal(var.value, 3)
# Test repr
var = Variable('uniform float bla')
assert_in('uniform float bla', var.compile())
# Test injection, definition, dependencies
assert_equal(var.expression({var: 'xxx'}), 'xxx')
assert_equal(var.definition({var: 'xxx'}), 'uniform float xxx;')
assert_in(var, var.dependencies())
# Renaming
var = Variable('uniform float bla')
assert_equal(var.name, 'bla')
var.name = 'foo'
assert_equal(var.name, 'foo')
def test_function_basics():
# Test init fail
assert_raises(TypeError, Function) # no args
assert_raises(ValueError, Function, 3) # need string
# Test init success 1
fun = Function('void main(){}')
assert_equal(fun.name, 'main')
assert len(fun.template_vars) == 0
# Test init success with template vars
fun = Function('void main(){$foo; $bar;}')
assert_equal(fun.name, 'main')
assert len(fun.template_vars) == 2
assert_in('foo', fun.template_vars)
assert_in('bar', fun.template_vars)
# Test setting verbatim expressions
assert_raises(KeyError, fun.__setitem__, 'bla', '33') # no such template
fun['foo'] = '33'
fun['bar'] = 'bla bla'
assert_is(type(fun['foo']), TextExpression)
assert_equal(fun['foo'].expression(None), '33')
assert_is(type(fun['bar']), TextExpression)
assert_equal(fun['bar'].expression(None), 'bla bla')
# Test setting call expressions
fun = Function('void main(){\n$foo;\n$bar;\n$spam(XX);\n$eggs(YY);\n}')
trans = Function('float transform_scale(float x) {return x+1.0;}')
assert_raises(TypeError, trans) # requires 1 arg
assert_raises(TypeError, trans, '1', '2')
fun['foo'] = trans('2')
fun['bar'] = trans('3')
fun['spam'] = trans
fun['eggs'] = trans
#
for name in ['foo', 'bar']:
assert_is(type(fun[name]), FunctionCall)
assert_equal(fun[name].function, trans)
assert_in(trans, fun.dependencies())
for name in ['spam', 'eggs']:
assert_equal(fun[name], trans)
#
text = fun.compile()
assert_in('\ntransform_scale(2);\n', text)
assert_in('\ntransform_scale(3);\n', text)
assert_in('\ntransform_scale(XX);\n', text)
assert_in('\ntransform_scale(YY);\n', text)
# test pre/post assignments
fun = Function('void main() {some stuff;}')
fun['pre'] = '__pre__'
fun['post'] = '__post__'
text = fun.compile()
assert text == 'void main() {\n __pre__\nsome stuff;\n __post__\n}\n'
# Test variable expressions
fun = Function('void main(){$foo; $bar;}')
fun['foo'] = Variable('uniform float bla')
fun['bar'] = Variable('attribute float bla')
assert_is(type(fun['foo']), Variable)
assert_is(type(fun['bar']), Variable)
assert_in(fun['foo'], fun.dependencies())
assert_in(fun['bar'], fun.dependencies())
# Test special variables
fun = Function('void main(){$foo; $bar;}')
variable = Variable('attribute vec3 v_pos')
varying = Variable('varying vec3 color')
# These do not work due to index
assert_raises(TypeError, fun.__setitem__, 3, 3) # not a string
assert_raises(KeyError, fun.__setitem__, 'xxx', 3) # unknown template var
assert_raises(TypeError, fun.__setitem__, variable, 3) # only varyings
# These work
fun['gl_PointSize'] = '3.0'
fun[varying] = variable
# And getting works
assert_equal(fun['gl_PointSize'].text, '3.0')
assert_equal(fun[varying], variable)