1 files changed, 28 insertions, 0 deletions
diff --git a/testsuite/synth/comp04/tb_comp04.vhdl b/testsuite/synth/comp04/tb_comp04.vhdl
new file mode 100644
index 000000000..d9a9de54a
--- /dev/null
+++ b/testsuite/synth/comp04/tb_comp04.vhdl
@@ -0,0 +1,28 @@
+entity tb_comp04 is
+end tb_comp04;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_comp04 is
+  signal v : std_logic_vector (7 downto 0);
+  signal r : std_logic_vector (7 downto 0);
+begin
+  comp04_1: entity work.comp04
+    port map (
+      v => v,
+      r => r);
+
+  process
+  begin
+    v <= b"1100_0011";
+    wait for 1 ns;
+    assert r = b"1100_0011" severity failure;
+
+    v <= b"1100_0010";
+    wait for 1 ns;
+    assert r = b"0000_0000" severity failure;
+
+    wait;
+  end process;
+end behav;