public void TestTryGetValue()
{
ImmutableSortedTreeSet <string?> .Builder set = ImmutableSortedTreeSet.CreateBuilder(StringComparer.OrdinalIgnoreCase);
Assert.True(set.Add("a"));
Assert.False(set.Add("A"));
Assert.True(set.TryGetValue("a", out string?value));
Assert.Equal("a", value);
Assert.True(set.TryGetValue("A", out value));
Assert.Equal("a", value);
Assert.False(set.TryGetValue("b", out value));
Assert.Null(value);
}
public void TestIEnumeratorT()
{
ImmutableSortedTreeSet <int> .Builder set = ImmutableSortedTreeSet.CreateBuilder <int>();
IEnumerator <int> enumerator = set.GetEnumerator();
Assert.Equal(0, enumerator.Current);
Assert.False(enumerator.MoveNext());
Assert.Equal(0, enumerator.Current);
// Adding an item to the list invalidates it, but Current is still unchecked
CollectionAssert.EnumeratorInvalidated(set, () => set.Add(1));
Assert.Throws <InvalidOperationException>(() => enumerator.MoveNext());
Assert.Throws <InvalidOperationException>(() => enumerator.Reset());
Assert.Equal(0, enumerator.Current);
enumerator = set.GetEnumerator();
Assert.Equal(0, enumerator.Current);
Assert.True(enumerator.MoveNext());
Assert.Equal(1, enumerator.Current);
Assert.False(enumerator.MoveNext());
Assert.Equal(1, enumerator.Current);
enumerator.Reset();
Assert.Equal(0, enumerator.Current);
Assert.True(enumerator.MoveNext());
Assert.Equal(1, enumerator.Current);
enumerator.Reset();
Assert.Equal(0, enumerator.Current);
Assert.True(enumerator.MoveNext());
Assert.Equal(1, enumerator.Current);
Assert.False(enumerator.MoveNext());
Assert.Equal(1, enumerator.Current);
}
public void TestTrimExcess()
{
var random = new Random();
ImmutableSortedTreeSet <int> .Builder set = ImmutableSortedTreeSet.CreateBuilder <int>();
var reference = new SortedSet <int>();
for (int i = 0; i < 2 * 4 * 4; i++)
{
int value = random.Next(set.Count + 1);
set.Add(i);
reference.Add(i);
}
set.Validate(ValidationRules.None);
// In the first call to TrimExcess, items will move
set.TrimExcess();
set.Validate(ValidationRules.RequirePacked);
Assert.Equal(reference, set);
// In the second call, the list is already packed so nothing will move
set.TrimExcess();
set.Validate(ValidationRules.RequirePacked);
Assert.Equal(reference, set);
ImmutableSortedTreeSet <int> .Builder empty = ImmutableSortedTreeSet.CreateBuilder <int>();
empty.Validate(ValidationRules.RequirePacked);
empty.TrimExcess();
empty.Validate(ValidationRules.RequirePacked);
var single = ImmutableSortedTreeSet.CreateRange <int>(Enumerable.Range(0, 1)).ToBuilder();
single.Validate(ValidationRules.RequirePacked);
single.TrimExcess();
single.Validate(ValidationRules.RequirePacked);
// Construct a poorly-packed list with several levels
ImmutableSortedTreeSet <int> .Builder binary = ImmutableSortedTreeSet.CreateBuilder <int>();
for (int i = 99; i >= 0; i--)
{
binary.Add(i);
}
binary.TrimExcess();
binary.Validate(ValidationRules.RequirePacked);
// Construct a poorly-packed list with several levels
var ternary = ImmutableSortedTreeSet.CreateRange <int>(comparer: null, Enumerable.Range(0, 100)).ToBuilder();
for (int i = 99; i >= 0; i--)
{
ternary.Add(i);
}
ternary.TrimExcess();
ternary.Validate(ValidationRules.RequirePacked);
}
public void TestAddStaysPacked()
{
ImmutableSortedTreeSet <int> .Builder set = ImmutableSortedTreeSet.CreateBuilder <int>();
for (int i = 0; i < 4 * 8 * 8; i++)
{
// This test assumes items are being added are already ordered by hash code
Assert.Equal(i, i.GetHashCode());
set.Add(i);
set.Validate(ValidationRules.RequirePacked);
}
}
public void TestAdd()
{
int value = Generator.GetInt32();
ImmutableSortedTreeSet <int> .Builder set = ImmutableSortedTreeSet.CreateBuilder <int>();
Assert.Empty(set);
set.Add(value);
Assert.Single(set);
Assert.Equal(value, set.First());
int[] expected = { value };
int[] actual = set.ToArray();
Assert.Equal(expected, actual);
}
public void TestAddMany()
{
int[] expected = { 600, 601, 602, 603, 700, 701, 702, 703, 800, 801, 802, 803 };
ImmutableSortedTreeSet <int> .Builder set = ImmutableSortedTreeSet.CreateBuilder <int>();
foreach (int item in expected)
{
set.Add(item);
}
Assert.Equal(expected.Length, set.Count);
int[] actual = set.ToArray();
Assert.Equal(expected, actual);
}
public void TestReverse()
{
var random = new Random();
ImmutableSortedTreeSet <int> .Builder set = ImmutableSortedTreeSet.CreateBuilder <int>();
for (int i = 0; i < 4 * 8 * 8; i++)
{
int item = random.Next();
set.Add(item);
}
IEnumerable <int> reversed = set.Reverse();
Assert.Equal(set.AsEnumerable().Reverse(), reversed);
Assert.Equal(set, reversed.Reverse());
}
public void TestContains()
{
ImmutableSortedTreeSet <int> .Builder set = ImmutableSortedTreeSet.CreateBuilder <int>();
for (int i = 0; i < 4 * 8 * 8; i++)
{
int value = Generator.GetInt32(set.Count + 1);
set.Add(i);
// Use set.Contains(i) since this is a targeted collection API test
#pragma warning disable xUnit2017 // Do not use Contains() to check if a value exists in a collection
Assert.True(set.Contains(i));
#pragma warning restore xUnit2017 // Do not use Contains() to check if a value exists in a collection
}
set.Validate(ValidationRules.None);
}
