testsuite/synth: add a test for #2013

1 files changed, 26 insertions, 0 deletions

diff --git a/testsuite/synth/issue2013/tb_tc3.vhdl b/testsuite/synth/issue2013/tb_tc3.vhdl
new file mode 100644
index 000000000..35579b791
--- /dev/null
+++ b/testsuite/synth/issue2013/tb_tc3.vhdl
@@ -0,0 +1,26 @@
+entity tb_tc3 is
+end tb_tc3;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_tc3 is
+  signal state : std_ulogic;
+  signal o     : std_ulogic_vector(3 downto 0);
+begin
+  dut: entity work.tc3
+    port map (state, o);
+
+  process
+  begin
+    state <= '0';
+    wait for 1 ns;
+    assert o = "0111" severity failure;
+
+    state <= '1';
+    wait for 1 ns;
+    assert o = "1000" severity failure;
+
+    wait;
+  end process;
+end behav;