testsuite/synth: add a test for previous commit.

1 files changed, 38 insertions, 0 deletions

diff --git a/testsuite/synth/asgn01/tb_asgn06.vhdl b/testsuite/synth/asgn01/tb_asgn06.vhdl
new file mode 100644
index 000000000..82870f465
--- /dev/null
+++ b/testsuite/synth/asgn01/tb_asgn06.vhdl
@@ -0,0 +1,38 @@
+entity tb_asgn06 is
+end tb_asgn06;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_asgn06 is
+  signal s0 : std_logic;
+  signal clk : std_logic;
+  signal r  : std_logic_vector (65 downto 0);
+begin
+  dut: entity work.asgn06
+    port map (clk => clk, s0 => s0, r => r);
+
+  process
+    procedure pulse is
+    begin
+      clk <= '0';
+      wait for 1 ns;
+      clk <= '1';
+      wait for 1 ns;
+    end pulse;
+  begin
+    s0 <= '0';
+    pulse;
+    assert r (0) = '1' severity failure;
+    assert r (64 downto 1) = x"ffff_eeee_dddd_cccc" severity failure;
+    assert r (65) = '1' severity failure;
+
+    s0 <= '1';
+    pulse;
+    assert r (0) = '0' severity failure;
+    assert r (64 downto 1) = x"ffff_eeee_dddd_cc9c" severity failure;
+    assert r (65) = '0' severity failure;
+
+    wait;
+  end process;
+end behav;