public void Draw_CalledTwiceWhenPoolHas1Item_WillThrowInvalidOperationException()
{
WeightedPool <int> pool = new WeightedPool <int>(Singleton.DefaultRandom);
pool.Add(1, 12);
int drawnItem = pool.Draw();
Assert.AreEqual(1, drawnItem);
Assert.ThrowsException <InvalidOperationException>(() => pool.Draw());
}
public void Draw_WhenUsingRandomBiggerThanTotalWeight_WillThrowInvalidOperationException()
{
WeightedPool <int> pool = new WeightedPool <int>(new BadRandom(13));
pool.Add(1, 12);
Assert.ThrowsException <InvalidOperationException>(() => pool.Draw());
}
public void Draw_Called7TimesOnPoolOf7Items_WillDrawAllOfThemAndCountWillBe0()
{
WeightedPool <string> pool = new WeightedPool <string>(Singleton.DefaultRandom);
pool.Add("White", 5);
pool.Add("Blue", 5);
pool.Add("Black", 5);
pool.Add("Red", 5);
pool.Add("Green", 5);
pool.Add("Artifact", 3);
pool.Add("DualColor", 1);
string[] drawn = new string[7];
drawn[0] = pool.Draw();
drawn[1] = pool.Draw();
drawn[2] = pool.Draw();
drawn[3] = pool.Draw();
drawn[4] = pool.Draw();
drawn[5] = pool.Draw();
drawn[6] = pool.Draw();
Assert.IsTrue(drawn.Contains("White"));
Assert.IsTrue(drawn.Contains("Blue"));
Assert.IsTrue(drawn.Contains("Black"));
Assert.IsTrue(drawn.Contains("Red"));
Assert.IsTrue(drawn.Contains("Green"));
Assert.IsTrue(drawn.Contains("Artifact"));
Assert.IsTrue(drawn.Contains("DualColor"));
Assert.AreEqual(0, pool.Count);
}
public void Draw_WhenPoolHas0Items_WillThrowInvalidOperationException()
{
WeightedPool <int> pool = new WeightedPool <int>(Singleton.DefaultRandom);
Assert.ThrowsException <InvalidOperationException>(() => pool.Draw());
}