testsuite/synth: add a test for previous commit.

3 files changed, 87 insertions, 1 deletions

diff --git a/testsuite/synth/dff03/dff07.vhdl b/testsuite/synth/dff03/dff07.vhdl
new file mode 100644
index 000000000..428b527f4
--- /dev/null
+++ b/testsuite/synth/dff03/dff07.vhdl
@@ -0,0 +1,23 @@
+library ieee;
+use ieee.std_logic_1164.all;
+
+entity dff07 is
+  port (q1, q2 : out std_logic;
+        d : std_logic;
+        en1 : std_logic;
+        en2 : std_logic;
+        clk : std_logic);
+end dff07;
+
+architecture behav of dff07 is
+begin
+  process (clk) is
+  begin
+    if rising_edge (clk) and en1 = '1' then
+      if en2 = '1' then
+        q1 <= d;
+        q2 <= d;
+      end if;
+    end if;
+  end process;
+end behav;
diff --git a/testsuite/synth/dff03/tb_dff07.vhdl b/testsuite/synth/dff03/tb_dff07.vhdl
new file mode 100644
index 000000000..cbed9caa9
--- /dev/null
+++ b/testsuite/synth/dff03/tb_dff07.vhdl
@@ -0,0 +1,63 @@
+entity tb_dff07 is
+end tb_dff07;
+
+library ieee;
+use ieee.std_logic_1164.all;
+
+architecture behav of tb_dff07 is
+  signal clk : std_logic;
+  signal en1 : std_logic;
+  signal en2 : std_logic;
+  signal din : std_logic;
+  signal dout : std_logic;
+begin
+  dut: entity work.dff07
+    port map (
+      q1 => dout,
+      d => din,
+      en1 => en1,
+      en2 => en2,
+      clk => clk);
+
+  process
+    procedure pulse is
+    begin
+      clk <= '0';
+      wait for 1 ns;
+      clk <= '1';
+      wait for 1 ns;
+    end pulse;
+  begin
+    en1 <= '1';
+    en2 <= '1';
+    din <= '0';
+    pulse;
+    assert dout = '0' severity failure;
+
+    din <= '1';
+    pulse;
+    assert dout = '1' severity failure;
+
+    en1 <= '0';
+    din <= '0';
+    pulse;
+    assert dout = '1' severity failure;
+
+    en1 <= '1';
+    din <= '0';
+    pulse;
+    assert dout = '0' severity failure;
+
+    en2 <= '0';
+    din <= '1';
+    pulse;
+    assert dout = '0' severity failure;
+
+    en2 <= '1';
+    din <= '1';
+    pulse;
+    assert dout = '1' severity failure;
+
+    wait;
+  end process;
+end behav;
diff --git a/testsuite/synth/dff03/testsuite.sh b/testsuite/synth/dff03/testsuite.sh
index f0c94f7f9..5700e4cef 100755
--- a/testsuite/synth/dff03/testsuite.sh
+++ b/testsuite/synth/dff03/testsuite.sh
@@ -2,7 +2,7 @@
 
 . ../../testenv.sh
 
-for t in dff01 dff02 dff03 dff04 dff05 dff06; do
+for t in dff01 dff02 dff03 dff04 dff05 dff06 dff07; do
     analyze $t.vhdl tb_$t.vhdl
     elab_simulate tb_$t
     clean