public void TestBinaryObjects()
{
var obj1 = GetBinaryObject(1, "foo", 11);
var obj2 = GetBinaryObject(1, "bar", 11);
var obj3 = GetBinaryObject(2, "foo", 11);
var obj4 = GetBinaryObject(2, "bar", 11);
var obj5 = GetBinaryObject(1, "foo", 11);
var obj6 = GetBinaryObject(1, "foo", 12);
// Equals.
Assert.IsTrue(BinaryArrayEqualityComparer.Equals(obj1, obj1));
Assert.IsTrue(BinaryArrayEqualityComparer.Equals(obj1, obj5));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj1, obj2));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj1, obj3));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj1, obj4));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj1, obj6));
Assert.IsTrue(BinaryArrayEqualityComparer.Equals(obj2, obj2));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj2, obj5));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj2, obj3));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj2, obj4));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj2, obj6));
Assert.IsTrue(BinaryArrayEqualityComparer.Equals(obj3, obj3));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj3, obj5));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj3, obj4));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj3, obj6));
Assert.IsTrue(BinaryArrayEqualityComparer.Equals(obj4, obj4));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj4, obj5));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj4, obj6));
Assert.IsTrue(BinaryArrayEqualityComparer.Equals(obj5, obj5));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj5, obj6));
// BinaryObject.GetHashCode.
Assert.AreEqual(1934949494, obj1.GetHashCode());
Assert.AreEqual(-2013102781, obj2.GetHashCode());
Assert.AreEqual(1424415317, obj3.GetHashCode());
Assert.AreEqual(1771330338, obj4.GetHashCode());
Assert.AreEqual(obj1.GetHashCode(), obj5.GetHashCode());
Assert.AreEqual(1934979285, BinaryArrayEqualityComparer.GetHashCode(obj6));
// Comparer.GetHashCode.
Assert.AreEqual(2001751043, BinaryArrayEqualityComparer.GetHashCode(GetBinaryObject(0, null, 0)));
Assert.AreEqual(194296580, BinaryArrayEqualityComparer.GetHashCode(GetBinaryObject(1, null, 0)));
Assert.AreEqual(1934949494, BinaryArrayEqualityComparer.GetHashCode(obj1));
Assert.AreEqual(-2013102781, BinaryArrayEqualityComparer.GetHashCode(obj2));
Assert.AreEqual(1424415317, BinaryArrayEqualityComparer.GetHashCode(obj3));
Assert.AreEqual(1771330338, BinaryArrayEqualityComparer.GetHashCode(obj4));
Assert.AreEqual(BinaryArrayEqualityComparer.GetHashCode(obj1), BinaryArrayEqualityComparer.GetHashCode(obj5));
Assert.AreEqual(1934979285, BinaryArrayEqualityComparer.GetHashCode(obj6));
// GetHashCode consistency.
foreach (var obj in new[] { obj1, obj2, obj3, obj4, obj5, obj6 })
{
Assert.AreEqual(obj.GetHashCode(), BinaryArrayEqualityComparer.GetHashCode(obj));
}
}
public void TestStreamHashCode()
{
var ms = new BinaryHeapStream(10);
Assert.AreEqual(1, BinaryArrayEqualityComparer.GetHashCode(ms, 0, 0));
ms.WriteByte(1);
Assert.AreEqual(31 + 1, BinaryArrayEqualityComparer.GetHashCode(ms, 0, 1));
ms.WriteByte(3);
Assert.AreEqual((31 + 1) * 31 + 3, BinaryArrayEqualityComparer.GetHashCode(ms, 0, 2));
}
public void TestSimpleEquality()
{
var obj = GetBinaryObject(1, "x", 0);
Assert.IsTrue(BinaryArrayEqualityComparer.Equals(null, null));
Assert.IsTrue(BinaryArrayEqualityComparer.Equals(obj, obj));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(obj, null));
Assert.IsFalse(BinaryArrayEqualityComparer.Equals(null, obj));
Assert.AreEqual(0, BinaryArrayEqualityComparer.GetHashCode(null));
Assert.AreNotEqual(0, BinaryArrayEqualityComparer.GetHashCode(obj));
}