testsuite/synth: add a test for previous commit.

1 files changed, 20 insertions, 0 deletions

diff --git a/testsuite/synth/range01/tb_revrng01.vhdl b/testsuite/synth/range01/tb_revrng01.vhdl
new file mode 100644
index 000000000..8e29558ac
--- /dev/null
+++ b/testsuite/synth/range01/tb_revrng01.vhdl
@@ -0,0 +1,20 @@
+entity tb_revrng01 is
+end tb_revrng01;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_revrng01 is
+  signal a, z : std_logic_vector (7 downto 0);
+begin
+  dut: entity work.revrng01
+    port map (a, z);
+
+  process
+  begin
+    a <= x"a1";
+    wait for 1 ns;
+    assert z = x"85" severity failure;
+    wait;
+  end process;
+end behav;