def test_error(self):
class A(object): pass
val = A()
try:
is_constant(val)
self.fail("Expected TypeError")
except TypeError:
pass
def test_unknownNumericType(self):
ref = MyBogusNumericType(42)
self.assertTrue(is_constant(ref))
from pyomo.core.base.numvalue import native_numeric_types, native_types
self.assertIn(MyBogusNumericType, native_numeric_types)
self.assertIn(MyBogusNumericType, native_types)
native_numeric_types.remove(MyBogusNumericType)
native_types.remove(MyBogusNumericType)
def wrap_var(obj):
"""
Provides a Wrapper around the obj if it is not a constant value; otherwise,
returns the constant value.
"""
if pe.is_constant(obj):
return pe.value(obj)
else:
return Wrapper(obj)
def test_const2(self):
val = NumericConstant('foo')
self.assertTrue(is_constant(val))
def test_const1(self):
val = NumericConstant(1.0)
self.assertTrue(is_constant(val))
def test_string(self):
self.assertTrue(is_constant('foo'))
def test_long(self):
val = int(1e10)
self.assertTrue(is_constant(val))
def test_int(self):
self.assertTrue(is_constant(1))
def test_float(self):
self.assertTrue(is_constant(1.1))
def test_bool(self):
self.assertTrue(is_constant(True))
def test_none(self):
self.assertTrue(is_constant(None))