public void RaiseMoreThanThreeParameters()
{
RangeFunction function = new RangeFunction();
try
{
function.Apply(null, new object[] { 1, 2, 3, 4 }, null);
Assert.Fail("Exception expected");
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(TypeError));
Assert.AreEqual("range expected at most 3 arguments, got 4", ex.Message);
}
}
public void CreateRangeWithThreeParameters()
{
RangeFunction function = new RangeFunction();
var result = function.Apply(null, new object[] { 1, -2, -1 }, null);
Assert.IsNotNull(result);
Assert.IsInstanceOfType(result, typeof(Range));
var range = (Range)result;
Assert.AreEqual(1, range.From);
Assert.AreEqual(-2, range.To);
Assert.AreEqual(-1, range.Step);
}
public void RaiseWhenNoParameters()
{
RangeFunction function = new RangeFunction();
try
{
function.Apply(null, new object[] { }, null);
Assert.Fail("Exception expected");
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(TypeError));
Assert.AreEqual("range expected 1 arguments, got 0", ex.Message);
}
}
public void RaiseIfSomeParameterIsFloat()
{
RangeFunction function = new RangeFunction();
try
{
function.Apply(null, new object[] { 1.0, 2, 3 }, null);
Assert.Fail("Exception expected");
}
catch (Exception ex)
{
Assert.IsInstanceOfType(ex, typeof(TypeError));
Assert.AreEqual("'float' object cannot be interpreted as an integer", ex.Message);
}
}