def test_evaluate_series_access(self):
""" Test evaluation with series accessor """
model = Model()
model.var('x', default=1)
model.var('y', default=10)
model.param('a', default=.5)
model.solutions = [{'x': 2, 'y': 11, 'a': 60}]
self.assertEquals(11, model.evaluate('y(-1)'))
self.assertEquals(73, model.evaluate('x(-1) + y(-1) + a(-1)'))
def test_delta(self):
""" test the d() function """
model = Model()
model.var('x', default=-1)
model.var('y', default=10)
model.param('a', default=.5)
model.solutions = [{'x': 2, 'y': 11, 'a': 60}]
model.variables['x'].value = 5
self.assertEquals(3, model.evaluate('d(x)'))
def test_evaluate_series_access(self):
""" Test evaluation with series accessor """
model = Model()
model.var('x', default=1)
model.var('y', default=10)
model.param('a', default=.5)
model.solutions = [{'x': 2, 'y': 11, 'a': 60}]
self.assertEquals(11, model.evaluate('y(-1)'))
self.assertEquals(73, model.evaluate('x(-1) + y(-1) + a(-1)'))
def test_delta_error(self):
model = Model()
model.var('x', default=-1)
model.var('y', default=10)
model.param('a', default=.5)
model.solutions = [{'x': 2, 'y': 11, 'a': 60}]
model.variables['x'].value = 5
with self.assertRaises(EquationError) as context:
model.evaluate('d(-1)')
self.assertEquals('d-arg-not-a-variable', context.exception.errorid)
