/// <summary>
/// Determines whether the given set of values defines a valid range or not.
/// A valid range adheres to this constrain: MinValue <= Value <= MaxValue.
/// </summary>
/// <param name="range"></param>
/// <returns></returns>
bool IsValidRange(SByteUpDown range)
{
if (range.MinValue <= range.Value && range.Value <= range.MaxValue)
{
return(true);
}
return(false);
}
/// <summary>
/// Tests all permutions for all sequences of three elements.
/// </summary>
/// <param name="min"></param>
/// <param name="val"></param>
/// <param name="max"></param>
public void TestAllPermutations(sbyte min, sbyte val, sbyte max)
{
string[,] ctrl = new string[6, 3]
{
{ "min", "val", "max" },
{ "val", "min", "max" },
{ "val", "max", "min" },
{ "val", "min", "max" },
{ "min", "max", "val" },
{ "max", "min", "val" },
};
for (int i = 0; i < 6; i++)
{
var range = new SByteUpDown();
string testPermutation = "";
for (int j = 0; j < 3; j++)
{
var itemToSet = ctrl[i, j];
if (string.IsNullOrEmpty(testPermutation))
{
testPermutation = itemToSet;
}
else
{
testPermutation += ", " + itemToSet;
}
switch (itemToSet)
{
case "min":
range.MinValue = min;
Assert.IsTrue(IsValidRange(range));
break;
case "val":
range.Value = val;
Assert.IsTrue(IsValidRange(range));
break;
case "max":
range.MaxValue = max;
Assert.IsTrue(IsValidRange(range));
break;
default:
break;
}
}
Console.WriteLine("Testing Permutation {0}: {1} - min={2}, val={3}, max={4}", i, testPermutation, min, val, max);
Assert.IsTrue(IsValidRange(range));
Assert.IsTrue(range.MinValue == min);
Assert.IsTrue(range.Value == val);
Assert.IsTrue(range.MaxValue == max);
// Test if increment command works as expected
while (range.MaxValue > range.Value)
{
Assert.IsTrue(InputBaseUpDown.IncreaseCommand.CanExecute(null, range));
InputBaseUpDown.IncreaseCommand.Execute(null, range);
}
Assert.IsTrue(range.MaxValue == range.Value);
// Test if decrement command works as expected
while (range.MinValue < range.Value)
{
Assert.IsTrue(InputBaseUpDown.DecreaseCommand.CanExecute(null, range));
InputBaseUpDown.DecreaseCommand.Execute(null, range);
}
Assert.IsTrue(range.MinValue == range.Value);
}
}