From de2f506644a8cdb339b95f14a272f96f862d37a6 Mon Sep 17 00:00:00 2001
From: Ethan Sifferman <ethan@sifferman.dev>
Date: Sat, 29 Jul 2023 00:21:31 -0700
Subject: [PATCH] improved test

---
 ivtest/ivltests/sv_argumentless_func.v | 45 ++++++++++++++++++++------
 1 file changed, 36 insertions(+), 9 deletions(-)

diff --git a/ivtest/ivltests/sv_argumentless_func.v b/ivtest/ivltests/sv_argumentless_func.v
index 858da97f0..6ca061900 100644
--- a/ivtest/ivltests/sv_argumentless_func.v
+++ b/ivtest/ivltests/sv_argumentless_func.v
@@ -2,23 +2,50 @@
 module test;
 
 function automatic [7:0] test_func;
-    input _unused;
-    test_func = _unused;
+    test_func = 8'h1;
 endfunction
 
-logic [7:0] test_assign;
-assign test_assign = test_func(0);
+logic [7:0] test_alwayscomb;
+always_comb test_alwayscomb = test_func();
 
-wire [7:0] test_wire = test_func(0);
+logic [7:0] test_alwaysff;
+logic clk;
+always_ff @(posedge clk) test_alwaysff <= test_func();
+
+logic [7:0] test_assign;
+assign test_assign = test_func();
+
+wire [7:0] test_wire = test_func();
 
 initial begin
-    if (test_assign !== test_func(0)) begin
-        $display("FAILED -- test_assign=%h, expect %h", test_assign, test_func(0));
+    #1;
+
+    if (test_func() !== 8'h1) begin
+        $display("FAILED -- test_func()=%h, expect %h", test_func(), 8'h1);
         $finish;
     end
 
-    if (test_wire !== test_func(0)) begin
-        $display("FAILED -- test_wire=%h, expect %h", test_wire, test_func(0));
+    if (test_alwayscomb !== test_func()) begin
+        $display("FAILED -- test_alwayscomb=%h, expect %h", test_alwayscomb, test_func());
+        $finish;
+    end
+
+    if (test_assign !== test_func()) begin
+        $display("FAILED -- test_assign=%h, expect %h", test_assign, test_func());
+        $finish;
+    end
+
+    if (test_wire !== test_func()) begin
+        $display("FAILED -- test_wire=%h, expect %h", test_wire, test_func());
+        $finish;
+    end
+
+    clk = 0;
+    #1;
+    clk = 1;
+    #1;
+    if (test_alwaysff !== test_func()) begin
+        $display("FAILED -- test_alwaysff=%h, expect %h", test_alwaysff, test_func());
         $finish;
     end