func TestGather(t *testing.T) {
var acc testutil.Accumulator
pid := os.Getpid()
file, err := ioutil.TempFile(os.TempDir(), "telegraf")
require.NoError(t, err)
file.Write([]byte(strconv.Itoa(pid)))
file.Close()
defer os.Remove(file.Name())
p := Procstat{
PidFile: file.Name(),
Prefix: "foo",
}
p.Gather(&acc)
assert.True(t, acc.HasFloatField("procstat", "foo_cpu_time_user"))
assert.True(t, acc.HasUIntField("procstat", "foo_memory_vms"))
}