diff --git a/test/samples/semantics.ml b/test/samples/semantics.ml
new file mode 100644
index 0000000..1e70755
--- /dev/null
+++ b/test/samples/semantics.ml
@@ -0,0 +1,116 @@
+
+let () =
+  assert true;
+  assert( not false );
+  assert( true && true );
+  assert(not ( true && false ) );
+  assert(not ( false && true ) );
+  assert(not ( false && false ) );
+  assert( true || true );
+  assert( true || false );
+  assert( false || true );
+  assert(not ( false || false ));
+  ()
+
+let () =
+  assert( 1 = 1 );
+  assert( not( 1 = 2 ) );
+  assert( 1 <> 2 );
+  assert( not( 1 <> 1 ) );
+  assert( 1 == 1 );
+  assert( not( 1 == 2 ) );
+  assert( 1 != 2 );
+  assert( not( 1 != 1 ) );
+  assert( 1 < 2 );
+  assert( not( 2 < 2 ) );
+  assert( 2 > 1 );
+  assert( not( 2 > 2 ) );
+  assert( 2 <= 2 );
+  assert( not( 3 <= 2 ) );
+  assert( 2 >= 2 );
+  (* assert( not( 2 >= 3 ) ); *)
+  ()
+
+let () =
+  (* assert( compare 0 0 = 0 ); *)
+  (* assert( compare 0 1 < 0 ); *)
+  (* assert( compare 1 0 > 0 ); *)
+  ()
+
+let () =
+  assert( ~- 1 = -1 );
+  assert( ~+ 1 = 1 );
+  assert( succ 1 = 2 );
+  assert( pred 1 = 0 );
+  assert( 1 + 1 = 2 );
+  assert( 1 - 1 = 0 );
+  assert( 1 * 2 = 2 );
+  (* assert( 1 / 1 = 1 ); *)
+  (* assert( 3 mod 2 = 1 ); *)
+  assert( abs (-1) = 1 );
+  (* assert( -1 land 3 = 3 ); *)
+  (* assert( -1 lor 3 = -1 ); *)
+  (* assert( -1 lxor 3 = -4 ); *)
+  (* assert( lnot (-1) = 0 ); *)
+  (* assert( 1 lsl 2 = 4 ); *)
+  (* assert( 1 lsr 1 = 0 ); *)
+  (* assert( 1 asr 1 = 0 ); *)
+  ()
+
+let () =
+  (* assert( ~- min_int = min_int ); *)
+  (* assert( ~- max_int = min_int + 1 ); *)
+  ()
+
+let () =
+  let f x = x + x in
+  assert( 1 |> f = 2 );
+  (* assert( 1 |> f |> f = 4 ); *)
+  assert( f @@ 1 = 2 );
+  (* assert( f @@ f @@ 1 = 4 ); *)
+  ()
+
+let () =
+  let a = "a" in
+  let b = "b" in
+  (* assert( a == a ); *)
+  (* assert( a != b ); *)
+  (* assert( "a" = "a" ); *)
+  (* assert( "a" <> "b" ); *)
+  (* assert( "a" ^ "b" = "ab" ); *)
+  (* assert( "a" ^ "c" <> "ab" ); *)
+  ()
+
+let () =
+  (* assert( ignore 1 = () ); *)
+  (* assert( string_of_bool true = "true" ); *)
+  ()
+
+let () =
+  assert( fst (1,2) = 1 );
+  assert( snd (1,2) = 2 );
+  ()
+
+
+let () =
+  let r = ref 0 in
+  assert( !r = 0 );
+  r := 1;
+  assert( !r = 1 );
+  incr r;
+  assert( !r = 2 );
+  decr r;
+  assert( !r = 1 );
+  ()
+
+let () =
+  let r = ref 0 in
+  ignore( r == r ); (* forbid promotion to variable *)
+  (* assert( !r = 0 ); *)
+  r := 1;
+  (* assert( !r = 1 ); *)
+  (* incr r; *)
+  (* assert( !r = 2 ); *)
+  (* decr r; *)
+  (* assert( !r = 1 ); *)
+  ()
diff --git a/test/tests.ocp b/test/tests.ocp
index 6a17446..4e7b344 100644
--- a/test/tests.ocp
+++ b/test/tests.ocp
@@ -103,6 +103,7 @@ begin test "tmain"
   "minicycle" ( test_args = [ "-counter" "-dtlambda" "minicycle.ml" "-dot" "minicycle" ] )
   "loop_no_rec" ( test_args = [ "-counter" "-dtlambda" "loop_no_rec.ml" "-dot" "loop_no_rec" ] test_exit = 1 )
   "functions" ( test_args = [ "-counter" "-dtlambda" "pervasives.ml" "-open" "Pervasives" "functions.ml" "-dot" "functions" ] )
+  "semantics" ( test_args = [ "-counter" "-dtlambda" "pervasives.ml" "-open" "Pervasives" "semantics.ml" "-dot" "semantics" ] )
  ]
 
 end