public void CountedSetTryGetCountReturnsFalseIfItemIsNotPresent()
{
var set = new CountedSet <string>();
bool result = set.TryGetCount("foo", out _);
Assert.IsFalse(result);
}
public void CountedSetTryGetCountReturnsZeroIfItemIsNotPresent()
{
var set = new CountedSet <string>();
int count;
Assert.IsFalse(set.TryGetCount("foo", out count));
Assert.AreEqual(0, count);
}
public void IfItemIsAddedToSetMultipleTimesRemoveReducesCountByOne()
{
int firstCount = 0;
int secondCount = 0;
var set = new CountedSet <string>();
set.Add("foo");
set.Add("foo");
set.TryGetCount("foo", out firstCount);
set.Remove("foo");
set.TryGetCount("foo", out secondCount);
Assert.AreEqual(2, firstCount);
Assert.AreEqual(1, secondCount);
}
public void IfItemIsAddedToSetOnceAssociatedCountIsOne()
{
int count = 0;
var set = new CountedSet <string>();
set.Add("foo");
set.TryGetCount("foo", out count);
Assert.AreEqual(1, count);
}
public void CountedSetMaintainsDistinctCountForDifferentItems()
{
int fooCount = 0;
int barCount = 0;
var set = new CountedSet <string>();
set.Add("foo");
set.Add("foo");
set.Add("foo");
set.Add("bar");
set.Add("bar");
set.TryGetCount("foo", out fooCount);
set.TryGetCount("bar", out barCount);
Assert.AreEqual(3, fooCount);
Assert.AreEqual(2, barCount);
}
public void IfItemIsAddedToSetMultipleTimesAssociatedCountIsIncreasedByOne()
{
int firstCount = 0;
int secondCount = 0;
int thirdCount = 0;
var set = new CountedSet <string>();
//add first time
set.Add("foo");
set.TryGetCount("foo", out firstCount);
//add second time
set.Add("foo");
set.TryGetCount("foo", out secondCount);
//add third time
set.Add("foo");
set.TryGetCount("foo", out thirdCount);
Assert.AreEqual(1, firstCount);
Assert.AreEqual(2, secondCount);
Assert.AreEqual(3, thirdCount);
}