net: add simple SetKeepAlivePeriod call test

R=golang-dev, dave
CC=golang-dev
https://golang.org/cl/12090043

diff --git a/src/pkg/net/protoconn_test.go b/src/pkg/net/protoconn_test.go
index b59925e01c1420d3f54e9e4c4e6afff126de4dad..7e4fbdaa748217eac0410ec0035232ae052701d6 100644 (file)
--- a/src/pkg/net/protoconn_test.go
+++ b/src/pkg/net/protoconn_test.go
@@ -103,6 +103,7 @@ func TestTCPConnSpecificMethods(t *testing.T) {
        }
        defer c.Close()
        c.SetKeepAlive(false)
+       c.SetKeepAlivePeriod(3 * time.Second)
        c.SetLinger(0)
        c.SetNoDelay(false)
        c.LocalAddr()