public void UnlessExtensionTest()
{
var input = new Number(1);
var result = input.Unless(x => x.Value == 1);
Assert.IsNull(result);
result = input.Unless(x => x.Value > 1);
Assert.AreSame(input, result);
}
public void ReturnExtensionTest()
{
var defaultValue = "Preceding expression returned NULL, default is returned.";
var input = new Number(1);
var result = input.With(x => x.Value == 1 ? x.ToString() : null).Return(x => x, defaultValue);
Assert.AreEqual(result, "1");
result = input.With(x => x.Value > 1 ? x.ToString() : null).Return(x => x, defaultValue);
Assert.AreEqual(result, defaultValue);
}
public void WithExtensionTest()
{
var input = new Number(1);
var result = input.With(x => x.ToString()).Return(x => x, null);
Assert.AreEqual(result, "1");
var input2 = new Number(1);
var result2 = input.With(x => new Number{Value = x.Value + 1}).Return(x => x, null);
Assert.IsTrue(result2 is Number);
Assert.AreEqual(result2.Value, 2);
}
public void DoExtensionTest()
{
var input = new Number(1);
var result = input.Do((x) => {x.Value++; });
Assert.AreEqual(input.Value, 2);
}