public void GetInt_MinGreaterThanMaxEquals_Exception()
{
var target = new FastRandomRandomization();
ExceptionAssert.IsThrowing(new ArgumentOutOfRangeException("upperBound", 1, "upperBound must be >=lowerBound"), () => {
target.GetInt(2, 1);
});
}
public void GetInt_NegativeValues_Negative()
{
var target = new FastRandomRandomization();
var actual = target.GetInt(-10, -9);
Assert.AreEqual(-10, actual);
}
public void GetInt_MinGreaterThanMaxEquals_Exception()
{
var target = new FastRandomRandomization();
Assert.Catch <ArgumentOutOfRangeException>(() =>
{
target.GetInt(2, 1);
}, "upperBound must be >=lowerBound");
}
public void GetUniqueInts_RangeLowerThanLength_Exception()
{
var target = new FastRandomRandomization();
Assert.Catch <ArgumentOutOfRangeException>(() =>
{
target.GetUniqueInts(5, 0, 4);
}, "The length is 5, but the possible unique values between 0 (inclusive) and 4 (exclusive) are 4.");
}
public void GetDouble_ManyThreads_DiffRandomResult()
{
var target = new FastRandomRandomization();
var actual = new BlockingCollection <int>();
Parallel.For(0, 1000, (i) =>
{
actual.Add(target.GetInt(0, int.MaxValue));
});
Assert.AreEqual(1000, actual.Count);
Assert.AreEqual(1000, actual.Distinct().Count());
}
public void GetInt_Range_RandomInRangeResult()
{
var target = new FastRandomRandomization();
FlowAssert.IsAtLeastOneAttemptOk(100, () => {
Assert.AreEqual(0, target.GetInt(0, 2));
});
FlowAssert.IsAtLeastOneAttemptOk(100, () => {
Assert.AreEqual(1, target.GetInt(0, 2));
});
for (int i = 0; i < 100; i++)
{
Assert.AreNotEqual(2, target.GetInt(0, 2));
}
}
public void GetDouble_Range_RandomInRangeResult()
{
var target = new FastRandomRandomization();
FlowAssert.IsAtLeastOneAttemptOk(100, () => {
Assert.IsTrue(target.GetDouble(0, 2.2) < 1);
});
FlowAssert.IsAtLeastOneAttemptOk(1000, () => {
Assert.IsTrue(target.GetDouble(0, 2.2) > 2.1);
});
for (int i = 0; i < 100; i++)
{
Assert.AreNotEqual(2.3, target.GetDouble(0, 2.2));
}
}
public void GetInts_Length_ArrayWithLength()
{
var target = new FastRandomRandomization();
var actual = target.GetInts(1, 0, 10);
Assert.AreEqual(1, actual.Length);
Assert.IsTrue(actual[0] >= 0 && actual[0] < 10);
actual = target.GetInts(2, 0, 10);
Assert.AreEqual(2, actual.Length);
Assert.IsTrue(actual[0] >= 0 && actual[0] < 10);
Assert.IsTrue(actual[1] >= 0 && actual[1] < 10);
actual = target.GetInts(3, 0, 10);
Assert.AreEqual(3, actual.Length);
Assert.IsTrue(actual[0] >= 0 && actual[0] < 10);
Assert.IsTrue(actual[1] >= 0 && actual[1] < 10);
Assert.IsTrue(actual[2] >= 0 && actual[2] < 10);
}
public void GetUniqueInts_Length_ArrayWithUniqueInts()
{
var target = new FastRandomRandomization();
var actual = target.GetUniqueInts(10, 0, 10);
Assert.AreEqual(10, actual.Length);
Assert.AreEqual(10, actual.Distinct().Count());
for (int i = 0; i < 10; i++)
{
Assert.IsTrue(actual[i] >= 0 && actual[i] < 10);
}
actual = target.GetUniqueInts(10, 10, 20);
Assert.AreEqual(10, actual.Length);
Assert.AreEqual(10, actual.Distinct().Count());
for (int i = 0; i < 10; i++)
{
Assert.IsTrue(actual[i] >= 10 && actual[i] < 20);
}
actual = target.GetUniqueInts(2, 0, 20);
Assert.AreEqual(2, actual.Length);
Assert.AreEqual(2, actual.Distinct().Count());
for (int i = 0; i < 2; i++)
{
Assert.IsTrue(actual[i] >= 0 && actual[i] < 20);
}
FlowAssert.IsAtLeastOneAttemptOk(100, () =>
{
actual = target.GetUniqueInts(2, 0, 20);
Assert.AreEqual(2, actual.Length);
Assert.AreEqual(2, actual.Distinct().Count());
Assert.IsTrue(actual[0] >= 2);
});
}
public void GetDouble_NoArgs_RandomResult()
{
var target = new FastRandomRandomization();
Assert.AreNotEqual(target.GetDouble(), target.GetDouble());
}
/// <summary>
/// Initializes static members of the <see cref="RandomizationProvider"/> class.
/// </summary>
static RandomizationProvider()
{
Current = new FastRandomRandomization();
}