Add influx v2 output plugin (#4645)

plugins/outputs/influxdb_v2/influxdb_test.go

@@ -0,0 +1,103 @@
+package influxdb_v2_test
+
+import (
+	"testing"
+
+	"github.com/influxdata/telegraf/internal/tls"
+	"github.com/influxdata/telegraf/plugins/outputs"
+	influxdb "github.com/influxdata/telegraf/plugins/outputs/influxdb_v2"
+	"github.com/stretchr/testify/require"
+)
+
+func TestDefaultURL(t *testing.T) {
+	output := influxdb.InfluxDB{}
+	err := output.Connect()
+	require.NoError(t, err)
+	if len(output.URLs) < 1 {
+		t.Fatal("Default URL failed to get set")
+	}
+	require.Equal(t, "http://localhost:9999", output.URLs[0])
+}
+func TestConnect(t *testing.T) {
+	tests := []struct {
+		err bool
+		out influxdb.InfluxDB
+	}{
+		{
+			out: influxdb.InfluxDB{
+				URLs:      []string{"http://localhost:1234"},
+				HTTPProxy: "http://localhost:9999",
+				HTTPHeaders: map[string]string{
+					"x": "y",
+				},
+			},
+		},
+		{
+			err: true,
+			out: influxdb.InfluxDB{
+				URLs:      []string{"!@#$qwert"},
+				HTTPProxy: "http://localhost:9999",
+				HTTPHeaders: map[string]string{
+					"x": "y",
+				},
+			},
+		},
+		{
+			err: true,
+			out: influxdb.InfluxDB{
+				URLs:      []string{"http://localhost:1234"},
+				HTTPProxy: "!@#$%^&*()_+",
+				HTTPHeaders: map[string]string{
+					"x": "y",
+				},
+			},
+		},
+		{
+			err: true,
+			out: influxdb.InfluxDB{
+				URLs:      []string{"!@#$%^&*()_+"},
+				HTTPProxy: "http://localhost:9999",
+				HTTPHeaders: map[string]string{
+					"x": "y",
+				},
+			},
+		},
+		{
+			err: true,
+			out: influxdb.InfluxDB{
+				URLs:      []string{":::@#$qwert"},
+				HTTPProxy: "http://localhost:9999",
+				HTTPHeaders: map[string]string{
+					"x": "y",
+				},
+			},
+		},
+		{
+			err: true,
+			out: influxdb.InfluxDB{
+				URLs: []string{"https://localhost:8080"},
+				ClientConfig: tls.ClientConfig{
+					TLSCA: "thing",
+				},
+			},
+		},
+	}
+
+	for i := range tests {
+		err := tests[i].out.Connect()
+		if !tests[i].err {
+			require.NoError(t, err)
+		} else {
+			require.Error(t, err)
+			t.Log(err)
+		}
+	}
+}
+
+func TestUnused(t *testing.T) {
+	thing := influxdb.InfluxDB{}
+	thing.Close()
+	thing.Description()
+	thing.SampleConfig()
+	outputs.Outputs["influxdb_v2"]()
+}