From a128e466ddde4ce1b2ee8b14433191e5abbc80c9 Mon Sep 17 00:00:00 2001
From: deadprogram <ron@hybridgroup.com>
Date: Sat, 10 Jun 2017 10:58:59 +0200
Subject: [PATCH] sysfs: increase test coverage

Signed-off-by: deadprogram <ron@hybridgroup.com>
---
 sysfs/pwm_pin_test.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/sysfs/pwm_pin_test.go b/sysfs/pwm_pin_test.go
index 8ef58df1..1ffeef71 100644
--- a/sysfs/pwm_pin_test.go
+++ b/sysfs/pwm_pin_test.go
@@ -46,6 +46,7 @@ func TestPwmPin(t *testing.T) {
 	err = pin.Enable(true)
 	gobottest.Assert(t, err, nil)
 	gobottest.Assert(t, fs.Files["/sys/class/pwm/pwmchip0/pwm10/enable"].Contents, "1")
+	gobottest.Refute(t, pin.InvertPolarity(false), nil)
 
 	fs.Files["/sys/class/pwm/pwmchip0/pwm10/period"].Contents = "6"
 	data, _ := pin.Period()