testsuite/synth: add a test for previous commit.

1 files changed, 32 insertions, 0 deletions

diff --git a/testsuite/synth/comp02/tb_mixer.vhdl b/testsuite/synth/comp02/tb_mixer.vhdl
new file mode 100644
index 000000000..4085ba9a9
--- /dev/null
+++ b/testsuite/synth/comp02/tb_mixer.vhdl
@@ -0,0 +1,32 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity tb_mixer is
+end tb_mixer;
+
+architecture behav of tb_mixer is
+  signal h, l, o : std_logic_vector (7 downto 0);
+begin
+  dut : entity work.mixer
+    port map (h => h, l => l, o => o);
+
+  process
+  begin
+    h <= x"00";
+    l <= x"ab";
+    wait for 1 ns;
+    assert o = x"0b" severity failure;
+
+    h <= x"50";
+    l <= x"a6";
+    wait for 1 ns;
+    assert o = x"56" severity failure;
+
+    h <= x"a3";
+    l <= x"5c";
+    wait for 1 ns;
+    assert o = x"af" severity failure;
+
+    wait;
+  end process;
+end behav;