Adding upstream version 1.34.4.

Signed-off-by: Daniel Baumann <daniel@debian.org>

plugins/inputs/sysstat/sysstat_interval_test.go

@@ -0,0 +1,54 @@
+//go:build !race && linux
+
+package sysstat
+
+import (
+	"os/exec"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+
+	"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 := &Sysstat{
+		Log:        testutil.Logger{},
+		interval:   0,
+		Sadc:       "/usr/lib/sa/sadc",
+		Sadf:       "/usr/bin/sadf",
+		Group:      false,
+		Activities: []string{"DISK", "SNMP"},
+		Options: map[string]string{
+			"C": "cpu",
+			"d": "disk",
+		},
+		DeviceTags: map[string][]map[string]string{
+			"sda": {
+				{
+					"vg": "rootvg",
+				},
+			},
+		},
+	}
+	require.NoError(t, s.Init())
+	require.NoError(t, acc.GatherError(s.Gather))
+
+	wantedInterval := 3
+	time.Sleep(time.Duration(wantedInterval) * time.Second)
+
+	require.NoError(t, acc.GatherError(s.Gather))
+	require.Equalf(t, wantedInterval, s.interval, "wrong interval: got %d, want %d", s.interval, wantedInterval)
+}