1 files changed, 89 insertions, 0 deletions
diff --git a/plugins/metrics/config_test.go b/plugins/metrics/config_test.go
new file mode 100644
index 00000000..665ec9cd
--- /dev/null
+++ b/plugins/metrics/config_test.go
@@ -0,0 +1,89 @@
+package metrics
+
+import (
+	"bytes"
+	"testing"
+
+	j "github.com/json-iterator/go"
+	"github.com/prometheus/client_golang/prometheus"
+	"github.com/stretchr/testify/assert"
+)
+
+var json = j.ConfigCompatibleWithStandardLibrary
+
+func Test_Config_Hydrate_Error1(t *testing.T) {
+	cfg := `{"request": {"From": "Something"}}`
+	c := &Config{}
+	f := new(bytes.Buffer)
+	f.WriteString(cfg)
+
+	err := json.Unmarshal(f.Bytes(), &c)
+	if err != nil {
+		t.Fatal(err)
+	}
+}
+
+func Test_Config_Hydrate_Error2(t *testing.T) {
+	cfg := `{"dir": "/dir/"`
+	c := &Config{}
+
+	f := new(bytes.Buffer)
+	f.WriteString(cfg)
+
+	err := json.Unmarshal(f.Bytes(), &c)
+	assert.Error(t, err)
+}
+
+func Test_Config_Metrics(t *testing.T) {
+	cfg := `{
+"collect":{
+	"metric1":{"type": "gauge"},
+	"metric2":{	"type": "counter"},
+	"metric3":{"type": "summary"},
+	"metric4":{"type": "histogram"}
+}
+}`
+	c := &Config{}
+	f := new(bytes.Buffer)
+	f.WriteString(cfg)
+
+	err := json.Unmarshal(f.Bytes(), &c)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	m, err := c.getCollectors()
+	assert.NoError(t, err)
+
+	assert.IsType(t, prometheus.NewGauge(prometheus.GaugeOpts{}), m["metric1"])
+	assert.IsType(t, prometheus.NewCounter(prometheus.CounterOpts{}), m["metric2"])
+	assert.IsType(t, prometheus.NewSummary(prometheus.SummaryOpts{}), m["metric3"])
+	assert.IsType(t, prometheus.NewHistogram(prometheus.HistogramOpts{}), m["metric4"])
+}
+
+func Test_Config_MetricsVector(t *testing.T) {
+	cfg := `{
+"collect":{
+	"metric1":{"type": "gauge","labels":["label"]},
+	"metric2":{	"type": "counter","labels":["label"]},
+	"metric3":{"type": "summary","labels":["label"]},
+	"metric4":{"type": "histogram","labels":["label"]}
+}
+}`
+	c := &Config{}
+	f := new(bytes.Buffer)
+	f.WriteString(cfg)
+
+	err := json.Unmarshal(f.Bytes(), &c)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	m, err := c.getCollectors()
+	assert.NoError(t, err)
+
+	assert.IsType(t, prometheus.NewGaugeVec(prometheus.GaugeOpts{}, []string{}), m["metric1"])
+	assert.IsType(t, prometheus.NewCounterVec(prometheus.CounterOpts{}, []string{}), m["metric2"])
+	assert.IsType(t, prometheus.NewSummaryVec(prometheus.SummaryOpts{}, []string{}), m["metric3"])
+	assert.IsType(t, prometheus.NewHistogramVec(prometheus.HistogramOpts{}, []string{}), m["metric4"])
+}