testsuite/synth: add test for previous commit.

3 files changed, 56 insertions, 0 deletions

diff --git a/testsuite/synth/func03/func01.vhdl b/testsuite/synth/func03/func01.vhdl
new file mode 100644
index 000000000..53f0a5c2c
--- /dev/null
+++ b/testsuite/synth/func03/func01.vhdl
@@ -0,0 +1,18 @@
+library ieee;
+use ieee.std_logic_1164.all;
+use ieee.numeric_std.all;
+
+entity func01 is
+  port (a : std_logic_vector (7 downto 0);
+        b : out std_logic_vector (7 downto 0));
+end func01;
+
+architecture behav of func01 is
+  function "+"(l, r : std_logic_vector) return std_logic_Vector is
+  begin
+    return std_logic_vector(unsigned(l) + unsigned(r));
+  end "+";
+begin
+  b <= a + a;
+end behav;
+
diff --git a/testsuite/synth/func03/tb_func01.vhdl b/testsuite/synth/func03/tb_func01.vhdl
new file mode 100644
index 000000000..42bdb3546
--- /dev/null
+++ b/testsuite/synth/func03/tb_func01.vhdl
@@ -0,0 +1,29 @@
+entity tb_func01 is
+end tb_func01;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_func01 is
+  signal a, b : std_logic_vector(7 downto 0);
+begin
+  dut: entity work.func01
+    port map (a, b);
+
+  process
+  begin
+    a <= x"5d";
+    wait for 1 ns;
+    assert b = x"ba" severity failure;
+
+    a <= x"ff";
+    wait for 1 ns;
+    assert b = x"fe" severity failure;
+
+    a <= x"23";
+    wait for 1 ns;
+    assert b = x"46" severity failure;
+
+    wait;
+  end process;
+end behav;
diff --git a/testsuite/synth/func03/testsuite.sh b/testsuite/synth/func03/testsuite.sh
new file mode 100755
index 000000000..74351ab7e
--- /dev/null
+++ b/testsuite/synth/func03/testsuite.sh
@@ -0,0 +1,9 @@
+#! /bin/sh
+
+. ../../testenv.sh
+
+for t in func01; do
+    synth_tb $t
+done
+
+echo "Test successful"