public void ShortRange_LengthDivisibleByStep_IterationCountMatchesCalculated()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
// note that the number of steps is limited to 1000 or fewer
short step = (short)(length / Random.Next(4, Math.Max(4, Math.Min(length / 2, 1000))));
// In case range length is under 4, ensure the step is at least 1
if (step < 1)
{
step = 1;
}
//ensure that step size is a factor of the length of the range
start += (short)(length % step);
ShortRange shortRange = new ShortRange(start, end, step);
// Range endpoint is inclusive, so must take into account this extra iteration
Assert.AreEqual(
length / step + 1,
shortRange.Count(),
"Iteration count should be (end-start)/step + 1 where endpoint is included");
}
public void ShortRange_Iterating_DifferenceBetweenIterationsMatchesStepSize()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
// note that the number of steps is limited to 100 or fewer
short step = (short)(length / Random.Next(4, Math.Max(4, Math.Min(length / 2, 100))));
// In case range length is under 4, ensure the step is at least 1
if (step < 1)
{
step = 1;
}
ShortRange shortRange = new ShortRange(start, end, step);
short?previous = null;
foreach (short i in shortRange)
{
if (previous.HasValue)
{
Assert.AreEqual(
i - previous,
step,
"Difference between iteration values should match the step value supplied");
}
previous = i;
}
}
public void ShortRange_LengthNotDivisibleByStep_IterationCountMatchesCalculated()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
// note that the number of steps is limited to 1000 or fewer
short step = (short)(length / Random.Next(4, Math.Max(4, Math.Min(length / 2, 1000))));
// In case range length is under 4, ensure the step is at least 2
if (step < 2)
{
step = 2;
}
//ensure that step size is not a factor of the length of the range
if (length % step == 0)
{
start += (short)Random.Next(1, step - 1);
length = (short)(end - start);
}
ShortRange shortRange = new ShortRange(start, end, step);
Assert.AreEqual(length / step + 1, shortRange.Count(), "Iteration count should be (start-end)/step +1");
}
public void ShortRange_EndBeforeStart_ThrowsArgumentOutOfRangeException()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue + length, short.MaxValue);
short end = (short)(start - length);
ShortRange shortRange = new ShortRange(start, end);
}
public void ShortRange_ConstructorWithoutStepParam_StepDefaultsToOne()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
ShortRange shortRange = new ShortRange(start, end);
Assert.AreEqual(start, shortRange.Start, "Starting point field must match the value supplied");
Assert.AreEqual(end, shortRange.End, "End point field must match the value supplied");
Assert.AreEqual(1, shortRange.Step, "Step amount must default to one");
}
public void ShortRange_StepIsLargerThanShortRange_ParametersMatchThoseGiven()
{
short length = (short)Random.Next(1, short.MaxValue / 2);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
short step = (short)(length + Random.Next(1, short.MaxValue / 3));
ShortRange shortRange = new ShortRange(start, end, step);
Assert.AreEqual(start, shortRange.Start, "Starting point field must match the value supplied");
Assert.AreEqual(end, shortRange.End, "End point field must match the value supplied");
Assert.AreEqual(step, shortRange.Step, "Step amount field must match the value supplied");
}
public void ShortRange_StepIsLargerThanShortRange_ParametersMatchThoseGiven()
{
short length = (short)Random.Next(1, short.MaxValue / 2);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
short step = (short)(length + Random.Next(1, short.MaxValue / 3));
ShortRange shortRange = new ShortRange(start, end, step);
Assert.AreEqual(start, shortRange.Start, "Starting point field must match the value supplied");
Assert.AreEqual(end, shortRange.End, "End point field must match the value supplied");
Assert.AreEqual(step, shortRange.Step, "Step amount field must match the value supplied");
}
public void ShortRange_ConvertingToString_IsNotBlank()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
short step = (short)Random.Next(1, length / 2);
ShortRange shortRange = new ShortRange(start, end, step);
Assert.AreNotEqual(
string.Empty,
shortRange.ToString(),
"String representation of range must not be an empty string");
}
public void ShortRange_ConvertingToString_IsNotBlank()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
short step = (short)Random.Next(1, length / 2);
ShortRange shortRange = new ShortRange(start, end, step);
Assert.AreNotEqual(
string.Empty,
shortRange.ToString(),
"String representation of range must not be an empty string");
}
public void ShortRange_UsingLargestPossibleParameters_IteratesSuccessfully()
{
// Step chosen to avoid an unfeasible number of iterations
ShortRange shortRange = new ShortRange(short.MinValue, short.MaxValue, short.MaxValue / 16);
bool iterated = false;
foreach (short i in shortRange)
{
iterated = true;
}
Assert.AreEqual(true, iterated, "When iterating across full range, at least one value should be returned");
}
public void ShortRange_Iterating_ValuesStayWithinRange()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
// note that the number of steps is limited to 100 or fewer
short step = (short)(length / Random.Next(4, Math.Max(4, Math.Min(length / 2, 100))));
// ensure the step is at least 1 (as length of less than four causes it to round down to zero)
if (step < 1)
{
step = 1;
}
ShortRange shortRange = new ShortRange(start, end, step);
foreach (short i in shortRange)
{
Assert.IsTrue(i >= start, "Value from iterator must by equal or above start parameter");
Assert.IsTrue(i <= end, "Value from iterator must be equal or below end parameter");
}
}
public void ShortRange_UsingLargestPossibleParameters_IteratesSuccessfully()
{
// Step chosen to avoid an unfeasible number of iterations
ShortRange shortRange = new ShortRange(short.MinValue, short.MaxValue, short.MaxValue / 16);
bool iterated = false;
foreach (short i in shortRange)
iterated = true;
Assert.AreEqual(true, iterated, "When iterating across full range, at least one value should be returned");
}
public void ShortRange_Iterating_DifferenceBetweenIterationsMatchesStepSize()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
// note that the number of steps is limited to 100 or fewer
short step = (short)(length / Random.Next(4, Math.Max(4, Math.Min(length / 2, 100))));
// In case range length is under 4, ensure the step is at least 1
if (step < 1) step = 1;
ShortRange shortRange = new ShortRange(start, end, step);
short? previous = null;
foreach (short i in shortRange)
{
if (previous.HasValue)
Assert.AreEqual(
i - previous,
step,
"Difference between iteration values should match the step value supplied");
previous = i;
}
}
public void ShortRange_LengthNotDivisibleByStep_IterationCountMatchesCalculated()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
// note that the number of steps is limited to 1000 or fewer
short step = (short)(length / Random.Next(4, Math.Max(4, Math.Min(length / 2, 1000))));
// In case range length is under 4, ensure the step is at least 2
if (step < 2) step = 2;
//ensure that step size is not a factor of the length of the range
if (length % step == 0)
{
start += (short)Random.Next(1, step - 1);
length = (short)(end - start);
}
ShortRange shortRange = new ShortRange(start, end, step);
Assert.AreEqual(length / step + 1, shortRange.Count(), "Iteration count should be (start-end)/step +1");
}
public void ShortRange_LengthDivisibleByStep_IterationCountMatchesCalculated()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
// note that the number of steps is limited to 1000 or fewer
short step = (short)(length / Random.Next(4, Math.Max(4, Math.Min(length / 2, 1000))));
// In case range length is under 4, ensure the step is at least 1
if (step < 1) step = 1;
//ensure that step size is a factor of the length of the range
start += (short)(length % step);
ShortRange shortRange = new ShortRange(start, end, step);
// Range endpoint is inclusive, so must take into account this extra iteration
Assert.AreEqual(
length / step + 1,
shortRange.Count(),
"Iteration count should be (end-start)/step + 1 where endpoint is included");
}
public void ShortRange_ConstructorWithoutStepParam_StepDefaultsToOne()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
ShortRange shortRange = new ShortRange(start, end);
Assert.AreEqual(start, shortRange.Start, "Starting point field must match the value supplied");
Assert.AreEqual(end, shortRange.End, "End point field must match the value supplied");
Assert.AreEqual(1, shortRange.Step, "Step amount must default to one");
}
public void ShortRange_EndBeforeStart_ThrowsArgumentOutOfRangeException()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue + length, short.MaxValue);
short end = (short)(start - length);
ShortRange shortRange = new ShortRange(start, end);
}
public void ShortRange_Iterating_ValuesStayWithinRange()
{
short length = (short)Random.Next(1, short.MaxValue);
short start = (short)Random.Next(short.MinValue, short.MaxValue - length);
short end = (short)(start + length);
// note that the number of steps is limited to 100 or fewer
short step = (short)(length / Random.Next(4, Math.Max(4, Math.Min(length / 2, 100))));
// ensure the step is at least 1 (as length of less than four causes it to round down to zero)
if (step < 1) step = 1;
ShortRange shortRange = new ShortRange(start, end, step);
foreach (short i in shortRange)
{
Assert.IsTrue(i >= start, "Value from iterator must by equal or above start parameter");
Assert.IsTrue(i <= end, "Value from iterator must be equal or below end parameter");
}
}