private static void AssertEmpty <T>(ReadOnlyCollectionBuilder <T> rocb)
{
Assert.Equal(0, rocb.Count);
Assert.False(rocb.Contains(default(T)));
Assert.False(rocb.Remove(default(T)));
Assert.InRange(rocb.IndexOf(default(T)), int.MinValue, -1);
IEnumerator <T> e = rocb.GetEnumerator();
Assert.False(e.MoveNext());
}
public void ReadOnlyCollectionBuilder_IndexOf()
{
var rocb = new ReadOnlyCollectionBuilder <int>(new[] { 1, 2, 2, 3 });
Assert.Equal(4, rocb.Count);
Assert.Equal(0, rocb.IndexOf(1));
Assert.Equal(1, rocb.IndexOf(2));
Assert.Equal(3, rocb.IndexOf(3));
Assert.InRange(rocb.IndexOf(0), int.MinValue, -1);
Assert.InRange(rocb.IndexOf(4), int.MinValue, -1);
rocb.Capacity = 5;
Assert.Equal(4, rocb.Count);
Assert.InRange(rocb.IndexOf(0), int.MinValue, -1); // No default values leak in through underlying array
Assert.True(rocb.Remove(3));
Assert.Equal(3, rocb.Count);
Assert.InRange(rocb.IndexOf(0), int.MinValue, -1); // No default values leak in through underlying array
Assert.InRange(rocb.IndexOf(3), int.MinValue, -1);
}
public void TestReadOnlyCollectionBuilder()
{
int cnt = 0;
// Empty
ReadOnlyCollectionBuilder <int> a = new ReadOnlyCollectionBuilder <int>();
AreEqual(0, a.Count);
AreEqual(0, a.Capacity);
AreEqual(a.ToReadOnlyCollection().Count, 0);
AreEqual(a.ToReadOnlyCollection().Count, 0);
// Simple case
a.Add(5);
AreEqual(1, a.Count);
AreEqual(4, a.Capacity);
AreEqual(a.ToReadOnlyCollection()[0], 5);
AreEqual(a.ToReadOnlyCollection().Count, 0); // Will reset
a = new ReadOnlyCollectionBuilder <int>(0);
AreEqual(0, a.Count);
AssertError <ArgumentException>(() => a = new ReadOnlyCollectionBuilder <int>(-1));
a = new ReadOnlyCollectionBuilder <int>(5);
for (int i = 1; i <= 10; i++)
{
a.Add(i);
}
AreEqual(10, a.Capacity);
System.Collections.ObjectModel.ReadOnlyCollection <int> readonlyCollection = a.ToReadOnlyCollection();
AreEqual(0, a.Capacity);
AreEqual(readonlyCollection.Count, 10);
ReadOnlyCollectionBuilder <int> b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
b.Add(11);
AreEqual(b.Count, 11);
AssertError <ArgumentException>(() => a = new ReadOnlyCollectionBuilder <int>(null));
// Capacity tests
b.Capacity = 11;
AssertError <ArgumentException>(() => b.Capacity = 10);
b.Capacity = 50;
AreEqual(b.Count, 11);
AreEqual(b.Capacity, 50);
// IndexOf cases
AreEqual(b.IndexOf(5), 4);
AreEqual(b[4], 5);
a = new ReadOnlyCollectionBuilder <int>();
AreEqual(a.IndexOf(5), -1);
// Insert cases
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
AssertError <ArgumentException>(() => b.Insert(11, 11));
b.Insert(2, 24);
AreEqual(b.Count, 11);
AreEqual(b[1], 2);
AreEqual(b[2], 24);
AreEqual(b[3], 3);
b.Insert(11, 1234);
AssertError <ArgumentException>(() => b.Insert(-1, 55));
AreEqual(b[11], 1234);
AreEqual(b.ToReadOnlyCollection().Count, 12);
// Remove
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
AreEqual(b.Remove(2), true);
AreEqual(b[0], 1);
AreEqual(b[1], 3);
AreEqual(b[2], 4);
AreEqual(b.Remove(2), false);
// RemoveAt
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
b.RemoveAt(2);
AreEqual(b[1], 2);
AreEqual(b[2], 4);
AreEqual(b[3], 5);
AssertError <ArgumentException>(() => b.RemoveAt(-5));
AssertError <ArgumentException>(() => b.RemoveAt(9));
// Clear
b.Clear();
AreEqual(b.Count, 0);
AreEqual(b.ToReadOnlyCollection().Count, 0);
b = new ReadOnlyCollectionBuilder <int>();
b.Clear();
AreEqual(b.Count, 0);
// Contains
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
AreEqual(b.Contains(5), true);
AreEqual(b.Contains(-3), false);
ReadOnlyCollectionBuilder <object> c = new ReadOnlyCollectionBuilder <object>();
c.Add("HI");
AreEqual(c.Contains("HI"), true);
AreEqual(c.Contains(null), false);
c.Add(null);
AreEqual(c.Contains(null), true);
// CopyTo
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
int[] ary = new int[10];
b.CopyTo(ary, 0);
AreEqual(ary[0], 1);
AreEqual(ary[9], 10);
// Reverse
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
b.Reverse();
// 1..10
cnt = 10;
for (int i = 0; i < 10; i++)
{
AreEqual(b[i], cnt--);
}
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
AssertError <ArgumentException>(() => b.Reverse(-1, 5));
AssertError <ArgumentException>(() => b.Reverse(5, -1));
b.Reverse(3, 3);
// 1,2,3,4,5,6,7,8,9.10
// 1,2,3,6,5,4,7,8,9,10
AreEqual(b[1], 2);
AreEqual(b[2], 3);
AreEqual(b[3], 6);
AreEqual(b[4], 5);
AreEqual(b[5], 4);
AreEqual(b[6], 7);
// ToArray
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
int[] intAry = b.ToArray();
AreEqual(intAry[0], 1);
AreEqual(intAry[9], 10);
b = new ReadOnlyCollectionBuilder <int>();
intAry = b.ToArray();
AreEqual(intAry.Length, 0);
// IEnumerable cases
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
cnt = 0;
foreach (int i in b)
{
cnt++;
}
AreEqual(cnt, 10);
b = new ReadOnlyCollectionBuilder <int>();
cnt = 0;
foreach (int i in b)
{
cnt++;
}
AreEqual(cnt, 0);
// Error case
AssertError <InvalidOperationException>(() => ChangeWhileEnumeratingAdd());
AssertError <InvalidOperationException>(() => ChangeWhileEnumeratingRemove());
// IList members
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
System.Collections.IList lst = b;
// IsReadOnly
AreEqual(lst.IsReadOnly, false);
// Add
AreEqual(lst.Add(11), 10);
AreEqual(lst.Count, 11);
AssertError <ArgumentException>(() => lst.Add("MOM"));
AssertError <ArgumentException>(() => lst.Add(null));
c = new ReadOnlyCollectionBuilder <object>();
c.Add("HI");
c.Add(null);
lst = c;
lst.Add(null);
AreEqual(lst.Count, 3);
// Contains
lst = b;
AreEqual(lst.Contains(5), true);
AreEqual(lst.Contains(null), false);
lst = c;
AreEqual(lst.Contains("HI"), true);
AreEqual(lst.Contains("hi"), false);
AreEqual(lst.Contains(null), true);
// IndexOf
lst = b;
AreEqual(lst.IndexOf(null), -1);
AreEqual(lst.IndexOf(1234), -1);
AreEqual(lst.IndexOf(5), 4);
// Insert
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
lst = b;
AssertError <ArgumentException>(() => lst.Insert(11, 11));
lst.Insert(2, 24);
AreEqual(lst.Count, 11);
AreEqual(lst[1], 2);
AreEqual(lst[2], 24);
AreEqual(lst[3], 3);
lst.Insert(11, 1234);
AssertError <ArgumentException>(() => lst.Insert(-1, 55));
AreEqual(lst[11], 1234);
AssertError <ArgumentException>(() => lst.Insert(3, "MOM"));
// IsFixedSize
AreEqual(lst.IsFixedSize, false);
// Remove
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
lst = b;
lst.Remove(2);
AreEqual(lst[0], 1);
AreEqual(lst[1], 3);
AreEqual(lst[2], 4);
lst.Remove(2);
// Indexing
lst[3] = 234;
AreEqual(lst[3], 234);
AssertError <ArgumentException>(() => lst[3] = null);
AssertError <ArgumentException>(() => lst[3] = "HI");
// ICollection<T>
// IsReadOnly
System.Collections.Generic.ICollection <int> col = b;
AreEqual(col.IsReadOnly, false);
// ICollection
b = new ReadOnlyCollectionBuilder <int>(readonlyCollection);
System.Collections.ICollection col2 = b;
AreEqual(col2.IsSynchronized, false);
Assert(col2.SyncRoot != null);
intAry = new int[10];
col2.CopyTo(intAry, 0);
AreEqual(intAry[0], 1);
AreEqual(intAry[9], 10);
string[] str = new string[50];
AssertError <ArrayTypeMismatchException>(() => col2.CopyTo(str, 0));
}