testsuite/synth: improve test for previous commit.

1 files changed, 31 insertions, 0 deletions

diff --git a/testsuite/synth/synth38/tb_modulo_test.vhdl b/testsuite/synth/synth38/tb_modulo_test.vhdl
new file mode 100644
index 000000000..0395be47a
--- /dev/null
+++ b/testsuite/synth/synth38/tb_modulo_test.vhdl
@@ -0,0 +1,31 @@
+entity tb_modulo_test is
+end tb_modulo_test;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_modulo_test is
+  signal a, b, c : integer := 0;
+begin
+  dut: entity work.modulo_test
+    port map (a, b, c);
+
+  process
+  begin
+    a <= 7;
+    wait for 1 ns;
+    assert b = 7 severity failure;
+    assert c = 7 severity failure;
+    
+    a <= 8;
+    wait for 1 ns;
+    assert b = 0 severity failure;
+    assert c = 0 severity failure;
+
+    a <= -7;
+    wait for 1 ns;
+    assert b = 1 severity failure;
+    assert c = -7 severity failure;
+    wait;
+  end process;
+end behav;