testsuite/synth: add a test for black boxes

1 files changed, 33 insertions, 0 deletions

diff --git a/testsuite/synth/blackbox01/tb_blackbox1.vhdl b/testsuite/synth/blackbox01/tb_blackbox1.vhdl
new file mode 100644
index 000000000..695be78d5
--- /dev/null
+++ b/testsuite/synth/blackbox01/tb_blackbox1.vhdl
@@ -0,0 +1,33 @@
+entity tb_blackbox1 is
+end tb_blackbox1;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_blackbox1 is
+  signal a, b : std_logic_vector(7 downto 0);
+  signal r :std_logic_vector(7 downto 0);
+begin
+  dut: entity work.blackbox1
+    port map (a, b, r);
+
+  process
+  begin
+    a <= x"40";
+    b <= x"04";
+    wait for 1 ns;
+    assert r = x"44" severity failure;
+
+    a <= x"b5";
+    b <= x"11";
+    wait for 1 ns;
+    assert r = x"c6" severity failure;
+
+    a <= x"b5";
+    b <= x"23";
+    wait for 1 ns;
+    assert r = x"c8" severity failure;
+
+    wait;
+  end process;
+end behav;