add test for default_label_strategy.go

metrics/default_label_strategy_test.go

@@ -0,0 +1,38 @@
+package metrics
+
+import (
+	"testing"
+
+	"github.com/czerwonk/bird_exporter/protocol"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestLabelNames(t *testing.T) {
+	s := NewDefaultLabelStrategy(true, `(\w+\s*)=(\s*\w+)`)
+	labels := s.LabelNames(&protocol.Protocol{
+		Name:         "test",
+		Description:  " foo = bar x: y",
+		ImportFilter: "in",
+		ExportFilter: "out",
+		IPVersion:    "6",
+		Proto:        protocol.BGP,
+	})
+
+	expected := []string{"name", "proto", "ip_version", "import_filter", "export_filter", "foo"}
+	assert.Equal(t, expected, labels)
+}
+
+func TestLabelValues(t *testing.T) {
+	s := NewDefaultLabelStrategy(true, `(\w+\s*)=(\s*\w+)`)
+	values := s.LabelValues(&protocol.Protocol{
+		Name:         "test",
+		Description:  " foo = bar x: y",
+		ImportFilter: "in",
+		ExportFilter: "out",
+		IPVersion:    "6",
+		Proto:        protocol.BGP,
+	})
+
+	expected := []string{"test", "BGP", "6", "in", "out", "bar"}
+	assert.Equal(t, expected, values)
+}