node_exporter/collector/netdev_linux_test.go

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package collector
import (
"os"
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"regexp"
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"testing"
)
func TestNetDevStats(t *testing.T) {
file, err := os.Open("fixtures/net-dev")
if err != nil {
t.Fatal(err)
}
defer file.Close()
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netStats, err := parseNetDevStats(file, regexp.MustCompile("^veth"))
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if err != nil {
t.Fatal(err)
}
if want, got := "10437182923", netStats["receive"]["wlan0"]["bytes"]; want != got {
t.Errorf("want netstat wlan0 bytes %s, got %s", want, got)
}
if want, got := "68210035552", netStats["receive"]["eth0"]["bytes"]; want != got {
t.Errorf("want netstat eth0 bytes %s, got %s", want, got)
}
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if want, got := "934", netStats["transmit"]["tun0"]["packets"]; want != got {
t.Errorf("want netstat tun0 packets %s, got %s", want, got)
}
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if want, got := 6, len(netStats["transmit"]); want != got {
t.Errorf("want count of devices to be %d, got %d", want, got)
}
if _, ok := netStats["transmit"]["veth4B09XN"]; ok != false {
t.Error("want fixture interface veth4B09XN to not exist, but it does")
}
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}