1 files changed, 34 insertions, 0 deletions
diff --git a/testsuite/synth/synth115/tb_testcase.vhdl b/testsuite/synth/synth115/tb_testcase.vhdl
new file mode 100644
index 000000000..620447134
--- /dev/null
+++ b/testsuite/synth/synth115/tb_testcase.vhdl
@@ -0,0 +1,34 @@
+entity tb_testcase is
+end tb_testcase;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_testcase is
+  signal din  : std_logic_vector (3 downto 0);
+  signal dout : std_logic_vector (1 downto 0);
+begin
+  dut: entity work.testcase
+    port map (din, dout);
+
+  process
+  begin
+    din <= "0001";
+    wait for 1 ns;
+    assert dout = "01" severity failure;
+
+    din <= "0010";
+    wait for 1 ns;
+    assert dout = "10" severity failure;
+
+    din <= "1010";
+    wait for 1 ns;
+    assert dout = "01" severity failure;
+
+    din <= "1001";
+    wait for 1 ns;
+    assert dout = "00" severity failure;
+
+    wait;
+  end process;
+end behav;