diff --git a/test/tuple.cxx b/test/tuple.cxx
index 68d7209..0f334f4 100644
--- a/test/tuple.cxx
+++ b/test/tuple.cxx
@@ -38,6 +38,7 @@
 
 # define CALC(x) BOOST_PP_TUPLE_ELEM(0, x) BOOST_PP_TUPLE_ELEM(1, x) BOOST_PP_TUPLE_ELEM(2, x)
 # define TEST_EAT BOOST_PP_TUPLE_EAT()(1, 2) 4
+# define TEST_EAT_NONE BOOST_PP_TUPLE_EAT()() 17
 # define TEST_EAT_LARGE BOOST_PP_TUPLE_EAT()(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32) 6
 # define TEST_EAT_VERY_LARGE BOOST_PP_TUPLE_EAT()(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63) 8
 
@@ -45,6 +46,7 @@
 
 # define CALC(x) BOOST_PP_TUPLE_ELEM(3, 0, x) BOOST_PP_TUPLE_ELEM(3, 1, x) BOOST_PP_TUPLE_ELEM(3, 2, x)
 # define TEST_EAT BOOST_PP_TUPLE_EAT(2)(1, 2) 4
+# define TEST_EAT_NONE BOOST_PP_TUPLE_EAT(1)() 17
 # define TEST_EAT_LARGE BOOST_PP_TUPLE_EAT(33)(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32) 6
 # define TEST_EAT_VERY_LARGE BOOST_PP_TUPLE_EAT(64)(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63) 8
 
@@ -64,6 +66,7 @@ BEGIN BOOST_PP_TUPLE_ELEM(64, 63, TUPLE_VERY_LARGE) == 63 END
 
 // reverse
 
+BEGIN BOOST_PP_IS_EMPTY(BOOST_PP_TUPLE_ELEM(1, 0, BOOST_PP_TUPLE_REVERSE(1,TUPLE_NONE))) == 1 END
 BEGIN BOOST_PP_TUPLE_ELEM(6, 2, BOOST_PP_TUPLE_REVERSE(6,TUPLE)) == 3 END
 BEGIN BOOST_PP_TUPLE_ELEM(33, 27, BOOST_PP_TUPLE_REVERSE(33,TUPLE_LARGE)) == 5 END
 BEGIN BOOST_PP_TUPLE_ELEM(64, 43, BOOST_PP_TUPLE_REVERSE(64,TUPLE_VERY_LARGE)) == 20 END
@@ -73,6 +76,7 @@ BEGIN CALC(BOOST_PP_TUPLE_REVERSE(3, T2)) == 6 END
 // eat
 
 BEGIN TEST_EAT == 4 END
+BEGIN TEST_EAT_NONE == 17 END
 BEGIN TEST_EAT_LARGE == 6 END
 BEGIN TEST_EAT_VERY_LARGE == 8 END
 
@@ -116,6 +120,7 @@ BEGIN BOOST_PP_TUPLE_ELEM(63, TUPLE_VERY_LARGE) == 63 END
 
 // reverse
 
+BEGIN BOOST_PP_IS_EMPTY(BOOST_PP_TUPLE_ELEM(0, BOOST_PP_TUPLE_REVERSE(TUPLE_NONE))) == 1 END
 BEGIN BOOST_PP_TUPLE_ELEM(2, BOOST_PP_TUPLE_REVERSE(TUPLE)) == 3 END
 BEGIN BOOST_PP_TUPLE_ELEM(27, BOOST_PP_TUPLE_REVERSE(TUPLE_LARGE)) == 5 END
 BEGIN BOOST_PP_TUPLE_ELEM(43, BOOST_PP_TUPLE_REVERSE(TUPLE_VERY_LARGE)) == 20 END
@@ -126,12 +131,16 @@ BEGIN BOOST_PP_VARIADIC_ELEM(45,BOOST_PP_TUPLE_ENUM(BOOST_PP_TUPLE_REVERSE(TUPLE
 
 // enum
 
+BEGIN BOOST_PP_VARIADIC_SIZE(BOOST_PP_TUPLE_ENUM(TUPLE_NONE)) == 1 END
 BEGIN BOOST_PP_VARIADIC_SIZE(BOOST_PP_TUPLE_ENUM(TUPLE)) == 6 END
 BEGIN BOOST_PP_VARIADIC_SIZE(BOOST_PP_TUPLE_ENUM(TUPLE_LARGE)) == 33 END
 BEGIN BOOST_PP_VARIADIC_SIZE(BOOST_PP_TUPLE_ENUM(TUPLE_VERY_LARGE)) == 64 END
 
 // insert
 
+BEGIN BOOST_PP_TUPLE_ELEM(0, BOOST_PP_TUPLE_INSERT(TUPLE_NONE,0,40)) == 40 END
+BEGIN BOOST_PP_TUPLE_SIZE(BOOST_PP_TUPLE_INSERT(TUPLE_NONE,0,40)) == 2 END
+
 BEGIN BOOST_PP_TUPLE_ELEM(0, BOOST_PP_TUPLE_INSERT(TUPLE,2,40)) == 0 END
 BEGIN BOOST_PP_TUPLE_ELEM(1, BOOST_PP_TUPLE_INSERT(TUPLE,1,40)) == 40 END
 BEGIN BOOST_PP_TUPLE_ELEM(2, BOOST_PP_TUPLE_INSERT(TUPLE,1,40)) == 1 END
@@ -160,15 +169,19 @@ BEGIN BOOST_PP_TUPLE_ELEM(55, BOOST_PP_TUPLE_POP_FRONT(TUPLE_VERY_LARGE)) == 56
 
 // push_back
 
+BEGIN BOOST_PP_TUPLE_SIZE(BOOST_PP_TUPLE_PUSH_BACK(TUPLE_NONE, 1)) == 2 END
 BEGIN BOOST_PP_TUPLE_SIZE(BOOST_PP_TUPLE_PUSH_BACK(TUPLE, 6)) == 7 END
 BEGIN BOOST_PP_TUPLE_SIZE(BOOST_PP_TUPLE_PUSH_BACK(TUPLE_LARGE, 33)) == 34 END
+BEGIN BOOST_PP_TUPLE_ELEM(1, BOOST_PP_TUPLE_PUSH_BACK(TUPLE_NONE, 1)) == 1 END
 BEGIN BOOST_PP_TUPLE_ELEM(0, BOOST_PP_TUPLE_PUSH_BACK(TUPLE, 6)) == 0 END
 BEGIN BOOST_PP_TUPLE_ELEM(33, BOOST_PP_TUPLE_PUSH_BACK(TUPLE_LARGE, 33)) == 33 END
 
 // push_front
 
+BEGIN BOOST_PP_TUPLE_SIZE(BOOST_PP_TUPLE_PUSH_FRONT(TUPLE_NONE, 55)) == 2 END
 BEGIN BOOST_PP_TUPLE_SIZE(BOOST_PP_TUPLE_PUSH_FRONT(TUPLE, 555)) == 7 END
 BEGIN BOOST_PP_TUPLE_SIZE(BOOST_PP_TUPLE_PUSH_FRONT(TUPLE_LARGE, 666)) == 34 END
+BEGIN BOOST_PP_TUPLE_ELEM(0, BOOST_PP_TUPLE_PUSH_FRONT(TUPLE_NONE, 55)) == 55 END
 BEGIN BOOST_PP_TUPLE_ELEM(0, BOOST_PP_TUPLE_PUSH_FRONT(TUPLE, 555)) == 555 END
 BEGIN BOOST_PP_TUPLE_ELEM(33, BOOST_PP_TUPLE_PUSH_FRONT(TUPLE_LARGE, 33)) == 32 END
 
@@ -176,7 +189,7 @@ BEGIN BOOST_PP_TUPLE_ELEM(33, BOOST_PP_TUPLE_PUSH_FRONT(TUPLE_LARGE, 33)) == 32
 
 #if BOOST_PP_VARIADICS_MSVC && _MSC_VER <= 1400
 
-BEGIN BOOST_PP_VARIADIC_SIZE(BOOST_PP_TUPLE_REM(6)(0, 1, 2, 3, 4, 5)) == 6 END
+BEGIN BOOST_PP_VARIADIC_SIZE(BOOST_PP_TUPLE_REM(1)()) == 1 END
 BEGIN BOOST_PP_VARIADIC_SIZE(BOOST_PP_TUPLE_REM(33)(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)) == 33 END
 BEGIN BOOST_PP_VARIADIC_SIZE(BOOST_PP_TUPLE_REM(64)(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)) == 64 END
 
@@ -213,6 +226,7 @@ BEGIN BOOST_PP_TUPLE_ELEM(62, BOOST_PP_TUPLE_REMOVE(TUPLE_VERY_LARGE, 48)) == 63
 // replace
 
 BEGIN BOOST_PP_TUPLE_SIZE(BOOST_PP_TUPLE_REPLACE(TUPLE_VERY_LARGE, 27, 1000)) == 64 END
+BEGIN BOOST_PP_TUPLE_ELEM(0, BOOST_PP_TUPLE_REPLACE(TUPLE_NONE, 0, 71)) == 71 END
 BEGIN BOOST_PP_TUPLE_ELEM(0, BOOST_PP_TUPLE_REPLACE(TUPLE, 1, 44)) == 0 END
 BEGIN BOOST_PP_TUPLE_ELEM(29, BOOST_PP_TUPLE_REPLACE(TUPLE_LARGE, 29, 999)) == 999 END
 BEGIN BOOST_PP_TUPLE_ELEM(38, BOOST_PP_TUPLE_REPLACE(TUPLE_VERY_LARGE, 37, 1)) == 38 END
@@ -220,6 +234,7 @@ BEGIN BOOST_PP_TUPLE_ELEM(28, BOOST_PP_TUPLE_REPLACE(TUPLE_VERY_LARGE, 28, 1)) =
 
 // size
 
+BEGIN BOOST_PP_TUPLE_SIZE(TUPLE_NONE) == 1 END
 BEGIN BOOST_PP_TUPLE_SIZE(TUPLE) == 6 END
 BEGIN BOOST_PP_TUPLE_SIZE(TUPLE_LARGE) == 33 END
 BEGIN BOOST_PP_TUPLE_SIZE(TUPLE_VERY_LARGE) == 64 END