예제 #1
0
        private static void TestTuple(Xtensive.Tuples.Tuple tuple)
        {
            Assert.IsFalse(tuple.GetFieldState(0).IsAvailable());

            try {
                tuple.GetFieldState(0).IsNull();
                throw new AssertionException("Value is not available. No one knows if it is null or not.");
            } catch (InvalidOperationException) {
            }

            tuple.SetValue(0, 1);
            Assert.IsTrue(tuple.GetFieldState(0).IsAvailable());
            Assert.IsFalse(tuple.GetFieldState(0).IsNull());
            Assert.IsTrue(tuple.GetFieldState(0).HasValue());
            Assert.AreEqual(1, tuple.GetValue(0));
            Assert.AreEqual(1, tuple.GetValue <int>(0));
            Assert.AreEqual(new int?(1), tuple.GetValue <int?>(0));

            tuple.SetValue(0, null);
            Assert.IsTrue(tuple.GetFieldState(0).IsAvailable());
            Assert.IsTrue(tuple.GetFieldState(0).IsNull());
            Assert.IsFalse(tuple.GetFieldState(0).HasValue());
            Assert.AreEqual(null, tuple.GetValue(0));
            Assert.AreEqual(null, tuple.GetValue <int?>(0));

            tuple.SetValue <int?>(0, null);
            Assert.IsTrue(tuple.GetFieldState(0).IsAvailable());
            Assert.IsTrue(tuple.GetFieldState(0).IsNull());
            Assert.IsFalse(tuple.GetFieldState(0).HasValue());
            Assert.AreEqual(null, tuple.GetValue(0));
            Assert.AreEqual(null, tuple.GetValue <int?>(0));
            Assert.AreEqual(null, tuple.GetValueOrDefault(0));
            Assert.AreEqual(null, tuple.GetValueOrDefault <int?>(0));

            try {
                tuple.GetValue(1);
                throw new AssertionException("Value should not be available.");
            } catch (InvalidOperationException) {
            }

            try {
                tuple.GetValue <string>(2);
                throw new AssertionException("Value should not be available.");
            } catch (InvalidOperationException) {
            }

            try {
                tuple.GetValue <byte>(0);
                throw new AssertionException("Null reference or Invalid cast exception should be thrown.");
            }
            catch (NullReferenceException) {}
            catch (InvalidCastException) {}

            Assert.IsTrue(tuple.Equals(tuple));
        }