def testGivenExpressionWithVariableWhenMultiplyBy0ThenExpressionWithConstant0IsObtained(
self):
variable = VariableBuilder().build()
expression = ExpressionBuilder().term(variable).build()
expression.multiply(0.0)
self.assertEqual(expression.get_value_constant(), 0)
self.assertEqual(expression.get_value_variable(variable.name), 0.0)
def testGivenExpressionWithConstantAndVariableWhenMultiplyThenGetValuesReturnsMultipliedTermsValues(
self):
constant = ConstantBuilder().build()
variable = VariableBuilder().build()
expression = ExpressionBuilder().term(constant).term(variable).build()
multiply_value = 2.0
expression.multiply(multiply_value)
constant.multiply(multiply_value)
variable.multiply(multiply_value)
self.assertEqual(expression.get_value_constant(), constant.value)
self.assertEqual(expression.get_value_variable(variable.name),
variable.value)
