Add wait until example

testbench/ha_tb.vhd

@@ -48,6 +48,13 @@ begin
     
     wait;
   end process;
-  
+
+  process is
+  begin
+    report "Shit!";
+    wait until r = '1';
+    report "It happened!";
+    wait;
+  end process;
   
 end architecture;