public void Test_Subspace_With_Binary_Prefix()
        {
            var subspace = new FdbSubspace(Slice.Create(new byte[] { 42, 255, 0, 127 }));

            Assert.That(subspace.Key.ToString(), Is.EqualTo("*<FF><00><7F>"));
            Assert.That(subspace.Copy(), Is.Not.SameAs(subspace));
            Assert.That(subspace.Copy().Key, Is.EqualTo(subspace.Key));

            // concat(Slice) should append the slice to the binary prefix directly
            Assert.That(subspace.Concat(Slice.FromInt32(0x01020304)).ToString(), Is.EqualTo("*<FF><00><7F><04><03><02><01>"));
            Assert.That(subspace.Concat(Slice.FromAscii("hello")).ToString(), Is.EqualTo("*<FF><00><7F>hello"));

            // pack(...) should use tuple serialization
            Assert.That(subspace.Pack(123).ToString(), Is.EqualTo("*<FF><00><7F><15>{"));
            Assert.That(subspace.Pack("hello").ToString(), Is.EqualTo("*<FF><00><7F><02>hello<00>"));
            Assert.That(subspace.Pack(Slice.FromAscii("world")).ToString(), Is.EqualTo("*<FF><00><7F><01>world<00>"));
            Assert.That(subspace.Pack(FdbTuple.Create("hello", 123)).ToString(), Is.EqualTo("*<FF><00><7F><02>hello<00><15>{"));

            // if we derive a tuple from this subspace, it should keep the binary prefix when converted to a key
            var t = subspace.Append("world", 123, false);

            Assert.That(t, Is.Not.Null);
            Assert.That(t.Count, Is.EqualTo(3));
            Assert.That(t.Get <string>(0), Is.EqualTo("world"));
            Assert.That(t.Get <int>(1), Is.EqualTo(123));
            Assert.That(t.Get <bool>(2), Is.False);
            var k = t.ToSlice();

            Assert.That(k.ToString(), Is.EqualTo("*<FF><00><7F><02>world<00><15>{<14>"));

            // if we unpack the key with the binary prefix, we should get a valid tuple
            var t2 = subspace.Unpack(k);

            Assert.That(t2, Is.Not.Null);
            Assert.That(t2.Count, Is.EqualTo(3));
            Assert.That(t2.Get <string>(0), Is.EqualTo("world"));
            Assert.That(t2.Get <int>(1), Is.EqualTo(123));
            Assert.That(t2.Get <bool>(2), Is.False);
        }
        public void Test_Subspace_With_Tuple_Prefix()
        {
            var subspace = new FdbSubspace(FdbTuple.Create("hello"));

            Assert.That(subspace.Key.ToString(), Is.EqualTo("<02>hello<00>"));
            Assert.That(subspace.Copy(), Is.Not.SameAs(subspace));
            Assert.That(subspace.Copy().Key, Is.EqualTo(subspace.Key));

            // concat(Slice) should append the slice to the tuple prefix directly
            Assert.That(subspace.Concat(Slice.FromInt32(0x01020304)).ToString(), Is.EqualTo("<02>hello<00><04><03><02><01>"));
            Assert.That(subspace.Concat(Slice.FromAscii("world")).ToString(), Is.EqualTo("<02>hello<00>world"));

            // pack(...) should use tuple serialization
            Assert.That(subspace.Pack(123).ToString(), Is.EqualTo("<02>hello<00><15>{"));
            Assert.That(subspace.Pack("world").ToString(), Is.EqualTo("<02>hello<00><02>world<00>"));

            // even though the subspace prefix is a tuple, appending to it will only return the new items
            var t = subspace.Append("world", 123, false);

            Assert.That(t, Is.Not.Null);
            Assert.That(t.Count, Is.EqualTo(3));
            Assert.That(t.Get <string>(0), Is.EqualTo("world"));
            Assert.That(t.Get <int>(1), Is.EqualTo(123));
            Assert.That(t.Get <bool>(2), Is.False);
            // but ToSlice() should include the prefix
            var k = t.ToSlice();

            Assert.That(k.ToString(), Is.EqualTo("<02>hello<00><02>world<00><15>{<14>"));

            // if we unpack the key with the binary prefix, we should get a valid tuple
            var t2 = subspace.Unpack(k);

            Assert.That(t2, Is.Not.Null);
            Assert.That(t2.Count, Is.EqualTo(3));
            Assert.That(t2.Get <string>(0), Is.EqualTo("world"));
            Assert.That(t2.Get <int>(1), Is.EqualTo(123));
            Assert.That(t2.Get <bool>(2), Is.False);
        }
		public void Test_Subspace_With_Binary_Prefix()
		{
			var subspace = new FdbSubspace(Slice.Create(new byte[] { 42, 255, 0, 127 }));

			Assert.That(subspace.Key.ToString(), Is.EqualTo("*<FF><00><7F>"));
			Assert.That(subspace.Copy(), Is.Not.SameAs(subspace));
			Assert.That(subspace.Copy().Key, Is.EqualTo(subspace.Key));

			// concat(Slice) should append the slice to the binary prefix directly
			Assert.That(subspace.Concat(Slice.FromInt32(0x01020304)).ToString(), Is.EqualTo("*<FF><00><7F><04><03><02><01>"));
			Assert.That(subspace.Concat(Slice.FromAscii("hello")).ToString(), Is.EqualTo("*<FF><00><7F>hello"));

			// pack(...) should use tuple serialization
			Assert.That(subspace.Pack(123).ToString(), Is.EqualTo("*<FF><00><7F><15>{"));
			Assert.That(subspace.Pack("hello").ToString(), Is.EqualTo("*<FF><00><7F><02>hello<00>"));
			Assert.That(subspace.Pack(Slice.FromAscii("world")).ToString(), Is.EqualTo("*<FF><00><7F><01>world<00>"));
			Assert.That(subspace.Pack(FdbTuple.Create("hello", 123)).ToString(), Is.EqualTo("*<FF><00><7F><02>hello<00><15>{"));

			// if we derive a tuple from this subspace, it should keep the binary prefix when converted to a key
			var t = subspace.Append("world", 123, false);
			Assert.That(t, Is.Not.Null);
			Assert.That(t.Count, Is.EqualTo(3));
			Assert.That(t.Get<string>(0), Is.EqualTo("world"));
			Assert.That(t.Get<int>(1), Is.EqualTo(123));
			Assert.That(t.Get<bool>(2), Is.False);
			var k = t.ToSlice();
			Assert.That(k.ToString(), Is.EqualTo("*<FF><00><7F><02>world<00><15>{<14>"));

			// if we unpack the key with the binary prefix, we should get a valid tuple
			var t2 = subspace.Unpack(k);
			Assert.That(t2, Is.Not.Null);
			Assert.That(t2.Count, Is.EqualTo(3));
			Assert.That(t2.Get<string>(0), Is.EqualTo("world"));
			Assert.That(t2.Get<int>(1), Is.EqualTo(123));
			Assert.That(t2.Get<bool>(2), Is.False);
		}
		public void Test_Subspace_With_Tuple_Prefix()
		{
			var subspace = new FdbSubspace(FdbTuple.Create("hello"));

			Assert.That(subspace.Key.ToString(), Is.EqualTo("<02>hello<00>"));
			Assert.That(subspace.Copy(), Is.Not.SameAs(subspace));
			Assert.That(subspace.Copy().Key, Is.EqualTo(subspace.Key));

			// concat(Slice) should append the slice to the tuple prefix directly
			Assert.That(subspace.Concat(Slice.FromInt32(0x01020304)).ToString(), Is.EqualTo("<02>hello<00><04><03><02><01>"));
			Assert.That(subspace.Concat(Slice.FromAscii("world")).ToString(), Is.EqualTo("<02>hello<00>world"));

			// pack(...) should use tuple serialization
			Assert.That(subspace.Pack(123).ToString(), Is.EqualTo("<02>hello<00><15>{"));
			Assert.That(subspace.Pack("world").ToString(), Is.EqualTo("<02>hello<00><02>world<00>"));

			// even though the subspace prefix is a tuple, appending to it will only return the new items
			var t = subspace.Append("world", 123, false);
			Assert.That(t, Is.Not.Null);
			Assert.That(t.Count, Is.EqualTo(3));
			Assert.That(t.Get<string>(0), Is.EqualTo("world"));
			Assert.That(t.Get<int>(1), Is.EqualTo(123));
			Assert.That(t.Get<bool>(2), Is.False);
			// but ToSlice() should include the prefix
			var k = t.ToSlice();
			Assert.That(k.ToString(), Is.EqualTo("<02>hello<00><02>world<00><15>{<14>"));

			// if we unpack the key with the binary prefix, we should get a valid tuple
			var t2 = subspace.Unpack(k);
			Assert.That(t2, Is.Not.Null);
			Assert.That(t2.Count, Is.EqualTo(3));
			Assert.That(t2.Get<string>(0), Is.EqualTo("world"));
			Assert.That(t2.Get<int>(1), Is.EqualTo(123));
			Assert.That(t2.Get<bool>(2), Is.False);

		}
 private Slice Encode(Slice key)
 {
     return(m_prefix.Concat(key));
 }