System.Object.ReferenceEquals C# (CSharp) Method

    public static bool ReferenceEquals (Object objA, Object objB) {
        return objA == objB;
    }
    

        public void TestObjectReferenceEquals()
        {
            Assert.That(Object.ReferenceEquals(null, null), Is.True);
            var suffix = "_";
            var o1     = "TestString" + suffix;
            var o2     = "TestString" + suffix;
            var o3     = o1;

            Assert.That(Object.ReferenceEquals(null, o1), Is.False);
            Assert.That(Object.ReferenceEquals(o1, o2), Is.False);
            Assert.That(Object.ReferenceEquals(o1, o3), Is.True);

            // Object.ReferenceEquals(valueType1, valueType2) always returns false
            int age = 34;

            Assert.That(Object.ReferenceEquals(age, age), Is.False);

            // When comparing strings, the interned string is compared if the string is interned.
            var s1 = "TestString";
            var s2 = "TestString";

            Assert.That(String.IsInterned(s1), Is.Not.Null);
            Assert.That(String.IsInterned(s2), Is.Not.Null);
            Assert.That(Object.ReferenceEquals(s1, s2), Is.True);
        }