synth: add a test for previous commit.

1 files changed, 25 insertions, 0 deletions

diff --git a/testsuite/synth/func01/tb_func03.vhdl b/testsuite/synth/func01/tb_func03.vhdl
new file mode 100644
index 000000000..d9ef0c0eb
--- /dev/null
+++ b/testsuite/synth/func01/tb_func03.vhdl
@@ -0,0 +1,25 @@
+entity tb_func03 is
+end tb_func03;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_func03 is
+  signal a, b : std_logic_vector(7 downto 0);
+begin
+  dut: entity work.func03
+    port map (a, b);
+
+  process
+  begin
+    a <= x"ff";
+    wait for 1 ns;
+    assert b = x"01" severity failure;
+
+    a <= x"ee";
+    wait for 1 ns;
+    assert b = x"00" severity failure;
+
+    wait;
+  end process;
+end behav;