test: minor, rename fn

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>

test/start-stop-serv.sh

@@ -35,7 +35,7 @@ test_one()
 	#run "initctl status serv"
 
 	retry 'assert_num_children 1 serv'
-	retry "assert_pidfile $pidfn" 1
+	retry "assert_has_pidfile $pidfn" 1
 
 	say 'Stop the service'
 	run "initctl stop serv"

test/tenv/lib.sh

@@ -87,7 +87,7 @@ assert_nocond()
 }
 
 # shellcheck disable=SC2086
-assert_pidfile()
+assert_has_pidfile()
 {
 	assert "Process has PID file" "$(texec find $1 2>/dev/null)"
 }