rtapi_app no autostart: Fix raster/test the proper way part 2

Author: hdiethelm

tests/raster/test

@@ -197,7 +197,15 @@ def main():
         #use interactive mode to be have the hal running
         #while needed and exit with writing "exit" at the end
         halrun = subprocess.Popen(["halrun", "-Is", "raster.hal"], stdin=subprocess.PIPE)
-        time.sleep(0.5) #Needs a short delay until halrun is up and running
+        #Test the last connection added in raster.hal
+        #to determine if hal is up and running
+        deadline = time.time() + 5
+        while time.time() < deadline:
+            if hal.pin_has_writer("test.fraction"):
+                break
+            time.sleep(0.01)
+        else:
+            raise RuntimeError("raster.hal did not come up within 5s")
 
         testInvalidOffset(prog, pin)
         testInvalidBPP(prog, pin)
@@ -255,8 +263,8 @@ def main():
         prog.exit()
         try:
             try:
-                halrun.communicate(input=b"exit", timeout=15)
-            except TimeoutExpired:
+                halrun.communicate(input=b"exit\n", timeout=5)
+            except subprocess.TimeoutExpired:
                 halrun.kill()
                 halrun.communicate()
             exit_status = halrun.returncode