public void GetUniqueInts_RangeLowerThanLength_Exception() { var target = new FastRandomRandomization(); ExceptionAssert.IsThrowing(new ArgumentOutOfRangeException("length", "The length is 5, but the possible unique values between 0 (inclusive) and 4 (exclusive) are 4."), () => { target.GetUniqueInts(5, 0, 4); }); }
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); }); }