telegraf/plugins/inputs/sysstat/sysstat_interval_test.go

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// +build !race
// +build linux
package sysstat
import (
"os/exec"
"testing"
"time"
"github.com/influxdata/telegraf/testutil"
)
// TestInterval verifies that the correct interval is created. It is not
// run with -race option, because in that scenario interval between the two
// Gather calls is greater than wantedInterval.
func TestInterval(t *testing.T) {
if testing.Short() {
t.Skip("Skipping test with sleep in short mode.")
}
// overwriting exec commands with mock commands
execCommand = fakeExecCommand
defer func() { execCommand = exec.Command }()
var acc testutil.Accumulator
s.interval = 0
wantedInterval := 3
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err := acc.GatherError(s.Gather)
if err != nil {
t.Fatal(err)
}
time.Sleep(time.Duration(wantedInterval) * time.Second)
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err = acc.GatherError(s.Gather)
if err != nil {
t.Fatal(err)
}
if s.interval != wantedInterval {
t.Errorf("wrong interval: got %d, want %d", s.interval, wantedInterval)
}
}