From 0a4f827f9b79fda6b240f5d3d8765027cf5638e6 Mon Sep 17 00:00:00 2001
From: Chris Goller <goller@gmail.com>
Date: Tue, 24 Jul 2018 21:29:00 -0500
Subject: [PATCH] Provide function to test metric equality (#4464)

---
 testutil/metric.go      | 16 ++++++++++++
 testutil/metric_test.go | 57 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 73 insertions(+)
 create mode 100644 testutil/metric.go
 create mode 100644 testutil/metric_test.go

diff --git a/testutil/metric.go b/testutil/metric.go
new file mode 100644
index 000000000..9620fea15
--- /dev/null
+++ b/testutil/metric.go
@@ -0,0 +1,16 @@
+package testutil
+
+import (
+	"testing"
+
+	"github.com/influxdata/telegraf"
+	"github.com/stretchr/testify/require"
+)
+
+// MustEqual requires a and b to be identical.
+func MustEqual(t *testing.T, got telegraf.Metric, want Metric) {
+	require.Equal(t, want.Measurement, got.Name())
+	require.Equal(t, want.Fields, got.Fields())
+	require.Equal(t, want.Tags, got.Tags())
+	require.Equal(t, want.Time, got.Time())
+}
diff --git a/testutil/metric_test.go b/testutil/metric_test.go
new file mode 100644
index 000000000..7295227ce
--- /dev/null
+++ b/testutil/metric_test.go
@@ -0,0 +1,57 @@
+package testutil
+
+import (
+	"testing"
+	"time"
+
+	"github.com/influxdata/telegraf"
+	"github.com/influxdata/telegraf/metric"
+)
+
+func TestMustEqual(t *testing.T) {
+	type args struct {
+	}
+	tests := []struct {
+		name string
+		got  telegraf.Metric
+		want Metric
+	}{
+		{
+			name: "telegraf and testutil metrics should be equal",
+			got: func() telegraf.Metric {
+				m, _ := metric.New(
+					"test",
+					map[string]string{
+						"t1": "v1",
+						"t2": "v2",
+					},
+					map[string]interface{}{
+						"f1": 1,
+						"f2": 3.14,
+						"f3": "v3",
+					},
+					time.Unix(0, 0),
+				)
+				return m
+			}(),
+			want: Metric{
+				Measurement: "test",
+				Tags: map[string]string{
+					"t1": "v1",
+					"t2": "v2",
+				},
+				Fields: map[string]interface{}{
+					"f1": int64(1),
+					"f2": 3.14,
+					"f3": "v3",
+				},
+				Time: time.Unix(0, 0),
+			},
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			MustEqual(t, tt.got, tt.want)
+		})
+	}
+}