public void Should_return_source_when_days_is_null()
{
// Given
var function = new AddDaysFunction();
var source = new DateTime(2017, 9, 15, 9, 10, 0);
// When
var result = function.Evaluate(source, null);
// Then
Assert.That(result, Is.EqualTo(source));
}
public void Should_return_null_when_source_is_null()
{
// Given
var function = new AddDaysFunction();
var source = (DateTime?)null;
// When
var result = function.Evaluate(source, "3");
// Then
Assert.That(result, Is.Null);
}
public void Should_add_days_to_date()
{
// Given
var function = new AddDaysFunction();
var source = new DateTime(2017, 9, 15, 9, 10, 0);
// When
var result = function.Evaluate(source, "3");
// Then
Assert.That(result, Is.EqualTo(source.AddDays(3)));
}
public void Should_add_partial_days_to_date()
{
// Given
Thread.CurrentThread.CurrentCulture = CultureInfo.InvariantCulture;
var function = new AddDaysFunction();
var source = new DateTime(2017, 9, 15, 9, 10, 0);
// When
var result = function.Evaluate(source, "3.5");
// Then
Assert.That(result, Is.EqualTo(source.AddDays(3.5)));
}
public void SuccessfullySetFunctionInfo()
{
var function = new AddDaysFunction();
Assert.NotNull(function.FunctionInfo);
Assert.Equal("Add Days", function.FunctionInfo.Name);
Assert.Equal(new Version("1.0.0"), function.FunctionInfo.Version);
Assert.Equal("Calculates the date that is a number of days from a certain date.", function.FunctionInfo.Description);
Assert.Collection(function.FunctionInfo.Tags,
i => Assert.Equal("date", i),
i => Assert.Equal("add", i),
i => Assert.Equal("day", i));
}
public void SuccessfullyReturnWithDefaultValues()
{
var function = new AddDaysFunction();
var inputs = function.GetInputs();
Assert.Equal(2, inputs.Length);
var result = function.Calculate(inputs);
Assert.Collection(result,
i =>
{
Assert.Equal(typeof(double), i.Value.GetType());
Assert.Equal(Math.IEEERemainder(0.0, 1.0), TypeConverter.ToObject <double>(i.Value));
});
}
