public void Remove()
{
var builder = ImmutableSegmentedHashSet.Create("a").ToBuilder();
Assert.False(builder.Remove("b"));
Assert.True(builder.Remove("a"));
}
public static void TestDebuggerAttributes_Null()
{
Type proxyType = DebuggerAttributes.GetProxyType(ImmutableSegmentedHashSet.Create <string>());
TargetInvocationException tie = Assert.Throws <TargetInvocationException>(() => Activator.CreateInstance(proxyType, (object?)null));
Assert.IsType <ArgumentNullException>(tie.InnerException);
}
public void EnumeratorRecyclingMisuse()
{
var collection = ImmutableSegmentedHashSet.Create <int>().Add(5);
var enumerator = collection.GetEnumerator();
var enumeratorCopy = enumerator;
Assert.True(enumerator.MoveNext());
Assert.False(enumerator.MoveNext());
enumerator.Dispose();
Assert.False(enumerator.MoveNext());
enumerator.Reset();
Assert.Equal(0, enumerator.Current);
Assert.True(enumeratorCopy.MoveNext());
enumeratorCopy.Reset();
Assert.Equal(0, enumeratorCopy.Current);
enumerator.Dispose(); // double-disposal should not throw
enumeratorCopy.Dispose();
// We expect that acquiring a new enumerator will use the same underlying Stack<T> object,
// but that it will not throw exceptions for the new enumerator.
enumerator = collection.GetEnumerator();
Assert.True(enumerator.MoveNext());
Assert.False(enumerator.MoveNext());
Assert.Equal(0, enumerator.Current);
enumerator.Dispose();
}
public void IntersectWith()
{
var builder = ImmutableSegmentedHashSet.Create(1, 2, 3).ToBuilder();
Assert.Throws <ArgumentNullException>("other", () => builder.IntersectWith(null !));
builder.IntersectWith(new[] { 2, 3, 4 });
Assert.Equal(new[] { 2, 3 }, builder);
}
public void Clear()
{
var set = ImmutableSegmentedHashSet.Create(1);
var builder = set.ToBuilder();
builder.Clear();
Assert.Equal(0, builder.Count);
}
public void SetEquals()
{
var builder = ImmutableSegmentedHashSet.Create("a").ToBuilder();
Assert.Throws <ArgumentNullException>("other", () => builder.SetEquals(null !));
Assert.False(builder.SetEquals(new[] { "b" }));
Assert.True(builder.SetEquals(new[] { "a" }));
Assert.True(builder.SetEquals(builder));
}
public void RemoveValuesFromCollidedHashCode()
{
var set = ImmutableSegmentedHashSet.Create <int>(new BadHasher <int>(), 5, 6);
Assert.True(IsSame(set, set.Remove(2)));
var setAfterRemovingFive = set.Remove(5);
Assert.Equal(1, setAfterRemovingFive.Count);
Assert.Equal(new[] { 6 }, setAfterRemovingFive);
}
public void DebuggerAttributesValid()
{
DebuggerAttributes.ValidateDebuggerDisplayReferences(ImmutableSegmentedHashSet.Create <string>());
ImmutableSegmentedHashSet <int> set = ImmutableSegmentedHashSet.Create(1, 2, 3);
DebuggerAttributeInfo info = DebuggerAttributes.ValidateDebuggerTypeProxyProperties(set);
PropertyInfo itemProperty = info.Properties.Single(pr => pr.GetCustomAttribute <DebuggerBrowsableAttribute>()?.State == DebuggerBrowsableState.RootHidden);
int[]? items = itemProperty.GetValue(info.Instance) as int[];
Assert.Equal(set, items);
}
public void RemoveValuesFromCollidedHashCode_RefType()
{
var set = ImmutableSegmentedHashSet.Create <string>(new BadHasher <string>(), "a", "b");
Assert.True(IsSame(set, set.Remove("c")));
var setAfterRemovingA = set.Remove("a");
Assert.Equal(1, setAfterRemovingA.Count);
Assert.Equal(new[] { "b" }, setAfterRemovingA);
}
public void KeyComparerEmptyCollection()
{
var builder = ImmutableSegmentedHashSet.Create <string>().ToBuilder();
Assert.Same(EqualityComparer <string> .Default, builder.KeyComparer);
builder.KeyComparer = StringComparer.OrdinalIgnoreCase;
Assert.Same(StringComparer.OrdinalIgnoreCase, builder.KeyComparer);
var set = builder.ToImmutable();
Assert.Same(StringComparer.OrdinalIgnoreCase, set.KeyComparer);
}
public void TryGetValue()
{
var builder = ImmutableSegmentedHashSet.Create(1, 2, 3).ToBuilder();
Assert.True(builder.TryGetValue(2, out _));
builder = ImmutableSegmentedHashSet.Create(CustomEqualityComparer.Instance, 1, 2, 3, 4).ToBuilder();
var existing = 0;
Assert.True(builder.TryGetValue(5, out existing));
Assert.Equal(4, existing);
}
public void SymmetricExceptWithComparerTests()
{
var set = ImmutableSegmentedHashSet.Create <string>("a").WithComparer(StringComparer.OrdinalIgnoreCase);
var otherCollection = new[] { "A" };
var expectedSet = new HashSet <string>(set, set.KeyComparer);
expectedSet.SymmetricExceptWith(otherCollection);
var actualSet = set.SymmetricExcept(otherCollection);
CollectionAssertAreEquivalent(expectedSet.ToList(), actualSet.ToList());
}
public void KeyComparerCollisions()
{
var builder = ImmutableSegmentedHashSet.Create("a", "A").ToBuilder();
builder.KeyComparer = StringComparer.OrdinalIgnoreCase;
Assert.Equal(1, builder.Count);
Assert.True(builder.Contains("a"));
var set = builder.ToImmutable();
Assert.Same(StringComparer.OrdinalIgnoreCase, set.KeyComparer);
Assert.Equal(1, set.Count);
Assert.True(set.Contains("a"));
}
public void ICollectionOfTMethods()
{
ICollection <string> builder = ImmutableSegmentedHashSet.Create("a").ToBuilder();
builder.Add("b");
Assert.True(builder.Contains("b"));
var array = new string[3];
builder.CopyTo(array, 1);
Assert.Null(array[0]);
CollectionAssertAreEquivalent(new[] { null, "a", "b" }, array);
Assert.False(builder.IsReadOnly);
CollectionAssertAreEquivalent(new[] { "a", "b" }, builder.ToArray()); // tests enumerator
}
public void KeyComparer()
{
var builder = ImmutableSegmentedHashSet.Create("a", "B").ToBuilder();
Assert.Same(EqualityComparer <string> .Default, builder.KeyComparer);
Assert.True(builder.Contains("a"));
Assert.False(builder.Contains("A"));
builder.KeyComparer = StringComparer.OrdinalIgnoreCase;
Assert.Same(StringComparer.OrdinalIgnoreCase, builder.KeyComparer);
Assert.Equal(2, builder.Count);
Assert.True(builder.Contains("a"));
Assert.True(builder.Contains("A"));
var set = builder.ToImmutable();
Assert.Same(StringComparer.OrdinalIgnoreCase, set.KeyComparer);
}
public void Create()
{
var comparer = StringComparer.OrdinalIgnoreCase;
var set = ImmutableSegmentedHashSet.Create <string?>();
Assert.Equal(0, set.Count);
Assert.Same(EqualityComparer <string> .Default, set.KeyComparer);
set = ImmutableSegmentedHashSet.Create <string?>(comparer);
Assert.Equal(0, set.Count);
Assert.Same(comparer, set.KeyComparer);
set = ImmutableSegmentedHashSet.Create <string?>("a");
Assert.Equal(1, set.Count);
Assert.Same(EqualityComparer <string> .Default, set.KeyComparer);
set = ImmutableSegmentedHashSet.Create <string?>(comparer, "a");
Assert.Equal(1, set.Count);
Assert.Same(comparer, set.KeyComparer);
set = ImmutableSegmentedHashSet.Create <string?>("a", "b");
Assert.Equal(2, set.Count);
Assert.Same(EqualityComparer <string> .Default, set.KeyComparer);
set = ImmutableSegmentedHashSet.Create <string?>(comparer, "a", "b");
Assert.Equal(2, set.Count);
Assert.Same(comparer, set.KeyComparer);
set = ImmutableSegmentedHashSet.CreateRange <string?>((IEnumerable <string>) new[] { "a", "b" });
Assert.Equal(2, set.Count);
Assert.Same(EqualityComparer <string> .Default, set.KeyComparer);
set = ImmutableSegmentedHashSet.CreateRange <string?>(comparer, (IEnumerable <string>) new[] { "a", "b" });
Assert.Equal(2, set.Count);
Assert.Same(comparer, set.KeyComparer);
set = ImmutableSegmentedHashSet.Create((string?)null);
Assert.Equal(1, set.Count);
set = ImmutableSegmentedHashSet.CreateRange(new[] { null, "a", null, "b" });
Assert.Equal(3, set.Count);
}
public void EnumeratorTest()
{
var builder = ImmutableSegmentedHashSet.Create(1).ToBuilder();
ManuallyEnumerateTest(new[] { 1 }, ((IEnumerable <int>)builder).GetEnumerator());
}