Added unit tests for query parsing

pkg/tsdb/opentsdb/opentsdb_test.go

 package opentsdb
+
+import (
+	"testing"
+
+	"github.com/grafana/grafana/pkg/tsdb"
+	. "github.com/smartystreets/goconvey/convey"
+	"github.com/grafana/grafana/pkg/components/simplejson"
+)
+
+func TestOpenTsdbExecutor(t *testing.T) {
+	Convey("OpenTsdb query testing", t, func() {
+
+		exec := &OpenTsdbExecutor{}
+
+		Convey("Build metric with downsampling enabled", func() {
+
+			query := &tsdb.Query{
+				Model: simplejson.New(),
+			}
+
+			query.Model.Set("metric", "cpu.average.percent")
+			query.Model.Set("aggregator", "avg")
+			query.Model.Set("disableDownsampling", false)
+			query.Model.Set("downsampleInterval", "")
+			query.Model.Set("downsampleAggregator","avg")
+			query.Model.Set("downsampleFillPolicy","none")
+
+			metric := exec.buildMetric(query)
+
+			So(len(metric), ShouldEqual, 3)
+			So(metric["metric"], ShouldEqual, "cpu.average.percent")
+			So(metric["aggregator"], ShouldEqual, "avg")
+			So(metric["downsample"], ShouldEqual, "1m-avg")
+
+		})
+
+		Convey("Build metric with downsampling diabled", func() {
+
+			query := &tsdb.Query{
+				Model: simplejson.New(),
+			}
+
+			query.Model.Set("metric", "cpu.average.percent")
+			query.Model.Set("aggregator", "avg")
+			query.Model.Set("disableDownsampling", true)
+			query.Model.Set("downsampleInterval", "")
+			query.Model.Set("downsampleAggregator","avg")
+			query.Model.Set("downsampleFillPolicy","none")
+
+			metric := exec.buildMetric(query)
+
+			So(len(metric), ShouldEqual, 2)
+			So(metric["metric"], ShouldEqual, "cpu.average.percent")
+			So(metric["aggregator"], ShouldEqual, "avg")
+			
+		})
+
+		Convey("Build metric with downsampling enabled with params", func() {
+
+			query := &tsdb.Query{
+				Model: simplejson.New(),
+			}
+
+			query.Model.Set("metric", "cpu.average.percent")
+			query.Model.Set("aggregator", "avg")
+			query.Model.Set("disableDownsampling", false)
+			query.Model.Set("downsampleInterval", "5m")
+			query.Model.Set("downsampleAggregator","sum")
+			query.Model.Set("downsampleFillPolicy","null")
+
+			metric := exec.buildMetric(query)
+
+			So(len(metric), ShouldEqual, 3)
+			So(metric["metric"], ShouldEqual, "cpu.average.percent")
+			So(metric["aggregator"], ShouldEqual, "avg")
+			So(metric["downsample"], ShouldEqual, "5m-sum-null")
+		})
+
+		Convey("Build metric with tags with downsampling disabled", func() {
+
+			query := &tsdb.Query{
+				Model: simplejson.New(),
+			}
+
+			query.Model.Set("metric", "cpu.average.percent")
+			query.Model.Set("aggregator", "avg")
+			query.Model.Set("disableDownsampling", true)
+			query.Model.Set("downsampleInterval", "5m")
+			query.Model.Set("downsampleAggregator","sum")
+			query.Model.Set("downsampleFillPolicy","null")
+
+			tags := simplejson.New()
+			tags.Set("env", "prod")
+			tags.Set("app", "grafana")
+			query.Model.Set("tags", tags.MustMap())
+
+			metric := exec.buildMetric(query)
+
+			So(len(metric), ShouldEqual, 3)
+			So(metric["metric"], ShouldEqual, "cpu.average.percent")
+			So(metric["aggregator"], ShouldEqual, "avg")
+			So(metric["downsample"], ShouldEqual, nil)
+			So(len(metric["tags"].(map[string]interface{})), ShouldEqual, 2)
+			So(metric["tags"].(map[string]interface{})["env"], ShouldEqual, "prod")
+			So(metric["tags"].(map[string]interface{})["app"], ShouldEqual, "grafana")
+			So(metric["tags"].(map[string]interface{})["ip"], ShouldEqual, nil)
+		})
+
+		Convey("Build metric with rate enabled but counter disabled", func() {
+
+			query := &tsdb.Query{
+				Model: simplejson.New(),
+			}
+
+			query.Model.Set("metric", "cpu.average.percent")
+			query.Model.Set("aggregator", "avg")
+			query.Model.Set("disableDownsampling", true)
+			query.Model.Set("shouldComputeRate", true)
+			query.Model.Set("isCounter",false)
+			
+			tags := simplejson.New()
+			tags.Set("env", "prod")
+			tags.Set("app", "grafana")
+			query.Model.Set("tags", tags.MustMap())
+
+			metric := exec.buildMetric(query)
+
+			So(len(metric), ShouldEqual, 5)
+			So(metric["metric"], ShouldEqual, "cpu.average.percent")
+			So(metric["aggregator"], ShouldEqual, "avg")
+			So(len(metric["tags"].(map[string]interface{})), ShouldEqual, 2)
+			So(metric["tags"].(map[string]interface{})["env"], ShouldEqual, "prod")
+			So(metric["tags"].(map[string]interface{})["app"], ShouldEqual, "grafana")
+			So(metric["tags"].(map[string]interface{})["ip"], ShouldEqual, nil)
+			So(metric["rate"], ShouldEqual, true)
+			So(metric["rateOptions"].(map[string]interface{})["counter"], ShouldEqual, false)
+		})
+
+		Convey("Build metric with rate and counter enabled", func() {
+
+			query := &tsdb.Query{
+				Model: simplejson.New(),
+			}
+
+			query.Model.Set("metric", "cpu.average.percent")
+			query.Model.Set("aggregator", "avg")
+			query.Model.Set("disableDownsampling", true)
+			query.Model.Set("shouldComputeRate", true)
+			query.Model.Set("isCounter",true)
+			query.Model.Set("counterMax",45)
+			query.Model.Set("counterResetValue",60)
+
+			tags := simplejson.New()
+			tags.Set("env", "prod")
+			tags.Set("app", "grafana")
+			query.Model.Set("tags", tags.MustMap())
+
+			metric := exec.buildMetric(query)
+
+			So(len(metric), ShouldEqual, 5)
+			So(metric["metric"], ShouldEqual, "cpu.average.percent")
+			So(metric["aggregator"], ShouldEqual, "avg")
+			So(len(metric["tags"].(map[string]interface{})), ShouldEqual, 2)
+			So(metric["tags"].(map[string]interface{})["env"], ShouldEqual, "prod")
+			So(metric["tags"].(map[string]interface{})["app"], ShouldEqual, "grafana")
+			So(metric["tags"].(map[string]interface{})["ip"], ShouldEqual, nil)
+			So(metric["rate"], ShouldEqual, true)
+			So(len(metric["rateOptions"].(map[string]interface{})), ShouldEqual, 3)
+			So(metric["rateOptions"].(map[string]interface{})["counter"], ShouldEqual, true)
+			So(metric["rateOptions"].(map[string]interface{})["counterMax"], ShouldEqual, 45)
+			So(metric["rateOptions"].(map[string]interface{})["resetValue"], ShouldEqual, 60)
+		})
+
+	})
+}
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