testsuite/synth/var01: add more tests.

1 files changed, 51 insertions, 0 deletions

diff --git a/testsuite/synth/var01/tb_var01a.vhdl b/testsuite/synth/var01/tb_var01a.vhdl
new file mode 100644
index 000000000..3712f1d8b
--- /dev/null
+++ b/testsuite/synth/var01/tb_var01a.vhdl
@@ -0,0 +1,51 @@
+entity tb_var01a is
+end tb_var01a;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_var01a is
+  signal clk : std_logic;
+  signal mask : std_logic_vector (1 downto 0);
+  signal val : std_logic_vector (7 downto 0);
+  signal res : std_logic_vector (7 downto 0);
+begin
+  dut: entity work.var01a
+    port map (
+      clk => clk,
+      mask => mask,
+      val => val,
+      res => res);
+
+  process
+    procedure pulse is
+    begin
+      clk <= '0';
+      wait for 1 ns;
+      clk <= '1';
+      wait for 1 ns;
+    end pulse;
+  begin
+    mask <= "11";
+    val <= x"12";
+    pulse;
+    assert res = x"12" report "res=" & to_hstring (res) severity failure;
+    
+    mask <= "10";
+    val <= x"9a";
+    pulse;
+    assert res = x"92" severity failure;
+
+    mask <= "00";
+    val <= x"00";
+    pulse;
+    assert res = x"92" severity failure;
+
+    mask <= "01";
+    val <= x"de";
+    pulse;
+    assert res = x"9e" severity failure;
+
+    wait;
+  end process;
+end behav;