Adding upstream version 1.34.4.

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

plugins/inputs/trig/trig_test.go

@@ -0,0 +1,31 @@
+package trig
+
+import (
+	"math"
+	"testing"
+
+	"github.com/stretchr/testify/require"
+
+	"github.com/influxdata/telegraf/testutil"
+)
+
+func TestTrig(t *testing.T) {
+	s := &Trig{
+		Amplitude: 10.0,
+	}
+
+	for i := 0.0; i < 10.0; i++ {
+		var acc testutil.Accumulator
+
+		sine := math.Sin((i*math.Pi)/5.0) * s.Amplitude
+		cosine := math.Cos((i*math.Pi)/5.0) * s.Amplitude
+
+		require.NoError(t, s.Gather(&acc))
+
+		fields := make(map[string]interface{})
+		fields["sine"] = sine
+		fields["cosine"] = cosine
+
+		acc.AssertContainsFields(t, "trig", fields)
+	}
+}