public void CheckAdditionService()
{
double x = 123.0;
double y = 0.456;
Assert.AreEqual(123.456, CalculationService.Add(x, y), epsilon, "The calculated value of x + y is not correct");
}
public void Should_AddNormally_WhenTwoPositiveNumbers()
{
var result = _calculationService.Add(10, 33);
result.Should().Be(43);
}
public void TestAddition()
{
AdderViewModel_INotifyDataErrorInfo vm = null;
try
{
vm = (AdderViewModel_INotifyDataErrorInfo)Controller.CreateViewModel(typeof(AdderViewModel_INotifyDataErrorInfo));
}
catch (Exception)
{
}
Assert.AreNotEqual(vm, null);
// One of the fields is null => can't calculate.
vm.x = null;
vm.y = 0.456;
Assert.IsFalse(vm.CanCalculate(null));
Assert.IsTrue(vm.HasErrors);
Assert.AreEqual(vm.CurrentValidationError.ToString(), "x: is mandatory");
// One of the fields is null => can't calculate.
vm.x = 123.0;
vm.y = null;
Assert.IsFalse(vm.CanCalculate(null));
Assert.IsTrue(vm.HasErrors);
Assert.AreEqual(vm.CurrentValidationError.ToString(), "y: is mandatory");
// One of the fields is null => can't calculate.
vm.x = null;
vm.y = null;
Assert.IsTrue(vm.HasErrors);
Assert.IsFalse(vm.CanCalculate(null));
Assert.AreEqual(vm.CurrentValidationError.ToString(), "y: is mandatory");
// Should be able to calculate when both inputs are valid numbers.
vm.x = 123.0;
vm.y = 0.456;
Assert.IsFalse(vm.HasErrors);
Assert.IsTrue(vm.CanCalculate(null));
Assert.AreEqual(vm.CurrentValidationError, null);
Assert.AreEqual(123.456, CalculationService.Add(vm.x.Value, vm.y.Value), epsilon, "The calculated value of x + y is not correct");
// One of the fields is negative => can't calculate.
vm.x = -1.0;
vm.y = 123.0;
Assert.IsFalse(vm.CanCalculate(null));
Assert.IsTrue(vm.HasErrors);
Assert.AreEqual(vm.CurrentValidationError.ToString(), "x: must be non-negative");
// One of the fields is negative => can't calculate.
vm.x = 123.0;
vm.y = -1.0;
Assert.IsFalse(vm.CanCalculate(null));
Assert.IsTrue(vm.HasErrors);
Assert.AreEqual(vm.CurrentValidationError.ToString(), "y: must be non-negative");
// One of the fields is negative => can't calculate.
vm.x = -1.0;
vm.y = -2.0;
Assert.IsFalse(vm.CanCalculate(null));
Assert.IsTrue(vm.HasErrors);
Assert.AreEqual(vm.CurrentValidationError.ToString(), "y: must be non-negative");
}