public void NextFloatMinimumMaximumTest()
{
var random = new MockRandom
{
MockNextDouble = float.NegativeInfinity
};
var nextFloat = random.NextFloat(0, 1);
Assert.IsTrue(float.IsNegativeInfinity(nextFloat), $@"Expected negative infinity, got {nextFloat}.");
}
public void NextDoubleTest()
{
var random = new MockRandom
{
MockNextDouble = double.NegativeInfinity
};
var nextDouble = random.NextDouble();
Assert.IsTrue(double.IsNegativeInfinity(nextDouble), $@"Expected negative infinity, got {nextDouble}.");
}
public void NextULongTest()
{
var byteGenerator = new Random();
var random = new MockRandom();
var buffer = new byte[8];
for (var i = 0; i < 100; i++)
{
byteGenerator.NextBytes(buffer);
random.MockNextBytes = buffer;
Assert.AreEqual(BitConverter.ToUInt64(buffer, 0), random.NextULong());
}
}
public void NextULongMaximumTest()
{
var random = new MockRandom();
var byteGenerator = new Random();
var buffer = new byte[8];
for (var i = 0; i < 100; i++)
{
byteGenerator.NextBytes(buffer);
random.MockNextBytes = buffer;
var value = BitConverter.ToUInt64(buffer, 0);
var maximum = unchecked ((ulong)byteGenerator.NextInt64());
Assert.AreEqual(
value % maximum, random.NextULong(maximum),
$"value={value}, maximum={maximum}, %={value % maximum}, {random.NextULong( maximum )}"
);
}
}
public void NextLongMaximumTest()
{
var random = new MockRandom();
Assert.ThrowsException <ArgumentOutOfRangeException>(() => random.NextLong(-1));
var byteGenerator = new Random();
var buffer = new byte[8];
for (var i = 0; i < 100; i++)
{
byteGenerator.NextBytes(buffer);
random.MockNextBytes = buffer;
var value = BitConverter.ToInt64(buffer, 0);
var maximum = byteGenerator.NextInt64();
Assert.AreEqual(
value % maximum, random.NextLong(maximum),
$"value={value}, maximum={maximum}, %={value % maximum}, {random.NextLong( maximum )}"
);
}
}
public void NextFloatMinimumThrowsExceptionWhenMaximumLessThanMinimumTest()
{
var random = new MockRandom();
Assert.ThrowsException <ArgumentOutOfRangeException>(() => random.NextFloat(1, 0));
}
public void NextFloatMaximumThrowsExceptionWhenNegativeTest()
{
var random = new MockRandom();
Assert.ThrowsException <ArgumentOutOfRangeException>(() => random.NextFloat(-1));
}
public void NextDoubleMinimumMaximumTest()
{
var random = new MockRandom();
Assert.ThrowsException <ArgumentOutOfRangeException>(() => random.NextDouble(1, 0));
}
public void NextDecimalMaximumTest()
{
var random = new MockRandom();
Assert.ThrowsException <ArgumentOutOfRangeException>(() => random.NextDecimal(-1));
}