testsuite/synth: add a test for previous commits.

1 files changed, 46 insertions, 0 deletions

diff --git a/testsuite/synth/case02/tb_case03.vhdl b/testsuite/synth/case02/tb_case03.vhdl
new file mode 100644
index 000000000..6988b1ca1
--- /dev/null
+++ b/testsuite/synth/case02/tb_case03.vhdl
@@ -0,0 +1,46 @@
+entity tb_case03 is
+end tb_case03;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_case03 is
+  signal clk : std_logic;
+  signal opc : std_logic_vector (2 downto 0);
+  signal arg : std_logic_vector (7 downto 0);
+  signal res : std_logic_vector (7 downto 0);
+  signal par : std_logic;
+begin
+  dut: entity work.case03
+    port map (clk, opc, arg, res, par);
+
+  process
+    procedure pulse is
+    begin
+      clk <= '0';
+      wait for 1 ns;
+      clk <= '1';
+      wait for 1 ns;
+    end pulse;
+  begin
+    opc <= "000";
+    arg <= x"45";
+    pulse;
+    assert res = x"ba" severity failure;
+    assert par = '1' severity failure;
+
+    opc <= "010";
+    arg <= x"55";
+    pulse;
+    assert res = x"aa" severity failure;
+    assert par = '0' severity failure;
+
+    opc <= "110";
+    arg <= x"57";
+    pulse;
+    assert res = x"57" severity failure;
+    assert par = '0' severity failure;
+
+    wait;
+  end process;
+end behav;