mirror of
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synced 2024-11-28 03:34:15 -06:00
99 lines
2.8 KiB
Go
99 lines
2.8 KiB
Go
package loki
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import (
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"testing"
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"time"
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"github.com/google/go-cmp/cmp"
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"github.com/grafana/grafana-plugin-sdk-go/data"
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"github.com/grafana/loki/pkg/loghttp"
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p "github.com/prometheus/common/model"
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"github.com/stretchr/testify/require"
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)
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func TestLoki(t *testing.T) {
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t.Run("converting metric name", func(t *testing.T) {
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metric := map[p.LabelName]p.LabelValue{
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p.LabelName("app"): p.LabelValue("backend"),
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p.LabelName("device"): p.LabelValue("mobile"),
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}
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query := &lokiQuery{
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LegendFormat: "legend {{app}} {{ device }} {{broken}}",
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}
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require.Equal(t, "legend backend mobile ", formatLegend(metric, query))
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})
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t.Run("build full series name", func(t *testing.T) {
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metric := map[p.LabelName]p.LabelValue{
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p.LabelName(p.MetricNameLabel): p.LabelValue("http_request_total"),
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p.LabelName("app"): p.LabelValue("backend"),
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p.LabelName("device"): p.LabelValue("mobile"),
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}
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query := &lokiQuery{
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LegendFormat: "",
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}
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require.Equal(t, `http_request_total{app="backend", device="mobile"}`, formatLegend(metric, query))
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})
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}
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func TestParseResponse(t *testing.T) {
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t.Run("value is not of type matrix", func(t *testing.T) {
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queryRes := data.Frames{}
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value := loghttp.QueryResponse{
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Data: loghttp.QueryResponseData{
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Result: loghttp.Vector{},
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},
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}
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res, err := parseResponse(&value, nil)
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require.Equal(t, queryRes, res)
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require.Error(t, err)
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})
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t.Run("response should be parsed normally", func(t *testing.T) {
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values := []p.SamplePair{
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{Value: 1, Timestamp: 1000},
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{Value: 2, Timestamp: 2000},
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{Value: 3, Timestamp: 3000},
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{Value: 4, Timestamp: 4000},
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{Value: 5, Timestamp: 5000},
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}
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value := loghttp.QueryResponse{
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Data: loghttp.QueryResponseData{
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Result: loghttp.Matrix{
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p.SampleStream{
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Metric: p.Metric{"app": "Application", "tag2": "tag2"},
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Values: values,
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},
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},
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},
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}
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query := &lokiQuery{
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LegendFormat: "legend {{app}}",
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}
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frame, err := parseResponse(&value, query)
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require.NoError(t, err)
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labels, err := data.LabelsFromString("app=Application, tag2=tag2")
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require.NoError(t, err)
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field1 := data.NewField("time", nil, []time.Time{
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time.Date(1970, 1, 1, 0, 0, 1, 0, time.UTC),
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time.Date(1970, 1, 1, 0, 0, 2, 0, time.UTC),
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time.Date(1970, 1, 1, 0, 0, 3, 0, time.UTC),
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time.Date(1970, 1, 1, 0, 0, 4, 0, time.UTC),
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time.Date(1970, 1, 1, 0, 0, 5, 0, time.UTC),
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})
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field2 := data.NewField("value", labels, []float64{1, 2, 3, 4, 5})
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field2.SetConfig(&data.FieldConfig{DisplayNameFromDS: "legend Application"})
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testFrame := data.NewFrame("legend Application", field1, field2)
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if diff := cmp.Diff(testFrame, frame[0], data.FrameTestCompareOptions()...); diff != "" {
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t.Errorf("Result mismatch (-want +got):\n%s", diff)
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}
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})
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}
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