chore: added double_gauge case

Signed-off-by: Juraj Michalek <[email protected]>

pkg/translator/prometheusremotewrite/number_data_points_v2_test.go

@@ -26,7 +26,7 @@ func TestPrometheusConverterV2_addGaugeNumberDataPoints(t *testing.T) {
 		want   func() map[uint64]*writev2.TimeSeries
 	}{
 		{
-			name: "gauge",
+			name: "int_gauge",
 			metric: func() pmetric.Metric {
 				return getIntGaugeMetric(
 					"test",
@@ -51,6 +51,32 @@ func TestPrometheusConverterV2_addGaugeNumberDataPoints(t *testing.T) {
 				}
 			},
 		},
+		{
+			name: "double_gauge",
+			metric: func() pmetric.Metric {
+				return getDoubleGaugeMetric(
+					"test",
+					pcommon.NewMap(),
+					1, ts,
+				)
+			},
+			want: func() map[uint64]*writev2.TimeSeries {
+				labels := labels.Labels{
+					labels.Label{
+						Name:  labels.MetricName,
+						Value: "test",
+					},
+				}
+				return map[uint64]*writev2.TimeSeries{
+					labels.Hash(): {
+						LabelsRefs: []uint32{1, 2},
+						Samples: []writev2.Sample{
+							{Timestamp: convertTimeStamp(pcommon.Timestamp(ts)), Value: 1},
+						},
+					},
+				}
+			},
+		},
 		{
 			name: "gauge with staleNaN",
 			metric: func() pmetric.Metric {