test: make the test work

Author: York Chen

internal/helm/repository/chart_repository.go

@@ -284,12 +284,14 @@ func (r *ChartRepository) DownloadChart(chart *repo.ChartVersion) (*bytes.Buffer
 	defer transport.Release(t)
 	start := time.Now()
 	buffer, err := r.Client.Get(u.String(), clientOpts...)
-	r.Recorder.RecordChartRepoEventDuration(
-		ChartRepoTypeHelm,
-		ChartRepoEventTypeDownloadChart,
-		r.Namespace,
-		r.URL,
-		start)
+	if r.Recorder != nil {
+		r.Recorder.RecordChartRepoEventDuration(
+			ChartRepoTypeHelm,
+			ChartRepoEventDownloadChart,
+			r.Namespace,
+			r.URL,
+			start)
+	}
 	return buffer, err
 }
 
@@ -459,12 +461,15 @@ func (r *ChartRepository) DownloadIndex(w io.Writer) (err error) {
 	if err != nil {
 		return err
 	}
-	r.Recorder.RecordChartRepoEventDuration(
-		ChartRepoTypeHelm,
-		ChartRepoEventTypeDownloadIndex,
-		r.Namespace,
-		r.URL,
-		start)
+	if r.Recorder != nil {
+		r.Recorder.RecordChartRepoEventDuration(
+			ChartRepoTypeHelm,
+			ChartRepoEventDownloadIndex,
+			r.Namespace,
+			r.URL,
+			start)
+	}
+
 	if _, err = io.Copy(w, res); err != nil {
 		return err
 	}

internal/helm/repository/chart_repository_test.go

@@ -63,13 +63,12 @@ func TestNewChartRepository(t *testing.T) {
 			New:     helmgetter.NewHTTPGetter,
 		},
 	}
-	repoRecorder := MustMakeMetrics()
 	options := []helmgetter.Option{helmgetter.WithBasicAuth("username", "password")}
 
 	t.Run("should construct chart repository", func(t *testing.T) {
 		g := NewWithT(t)
 
-		r, err := NewChartRepository(repositoryURL, "", providers, nil, options, "fake-namespace", repoRecorder)
+		r, err := NewChartRepository(repositoryURL, "", providers, nil, options, "fake-namespace", nil)
 		g.Expect(err).ToNot(HaveOccurred())
 		g.Expect(r).ToNot(BeNil())
 		g.Expect(r.URL).To(Equal(repositoryURL))
@@ -79,7 +78,7 @@ func TestNewChartRepository(t *testing.T) {
 
 	t.Run("should error on URL parsing failure", func(t *testing.T) {
 		g := NewWithT(t)
-		r, err := NewChartRepository("https://ex ample.com", "", nil, nil, nil, "fake-namespace", repoRecorder)
+		r, err := NewChartRepository("https://ex ample.com", "", nil, nil, nil, "fake-namespace", nil)
 		g.Expect(err).To(HaveOccurred())
 		g.Expect(err).To(BeAssignableToTypeOf(&url.Error{}))
 		g.Expect(r).To(BeNil())
@@ -89,7 +88,7 @@ func TestNewChartRepository(t *testing.T) {
 	t.Run("should error on unsupported scheme", func(t *testing.T) {
 		g := NewWithT(t)
 
-		r, err := NewChartRepository("http://example.com", "", providers, nil, nil, "fake-namespace", repoRecorder)
+		r, err := NewChartRepository("http://example.com", "", providers, nil, nil, "fake-namespace", nil)
 		g.Expect(err).To(HaveOccurred())
 		g.Expect(err.Error()).To(Equal("scheme \"http\" not supported"))
 		g.Expect(r).To(BeNil())
@@ -236,9 +235,12 @@ func TestChartRepository_DownloadChart(t *testing.T) {
 			t.Parallel()
 
 			mg := mockGetter{}
+
 			r := &ChartRepository{
-				URL:    tt.url,
-				Client: &mg,
+				URL:       tt.url,
+				Namespace: "dummy",
+				Client:    &mg,
+				Recorder:  nil,
 			}
 			res, err := r.DownloadChart(tt.chartVersion)
 			if tt.wantErr {

internal/helm/repository/metrics.go

@@ -25,8 +25,8 @@ import (
 const (
 	ChartRepoTypeHelm = "helm"
 	//ChartRepoTypeOCI                = "oci"
-	ChartRepoEventTypeDownloadIndex = "chart_repository_download"
-	ChartRepoEventTypeDownloadChart = "chart_download"
+	ChartRepoEventDownloadIndex = "chart_repository_download"
+	ChartRepoEventDownloadChart = "chart_download"
 )
 
 // Recorder is a recorder for chart repository events.
@@ -58,7 +58,7 @@ func NewRepositoryRecorder() *Recorder {
 				Help:    "The duration in seconds of an event for a Helm Chart Repository.",
 				Buckets: prometheus.ExponentialBuckets(10e-9, 10, 10),
 			},
-			[]string{"name", "repo_type", "namespace", "url", "checksum"},
+			[]string{"name", "repo_type", "namespace", "url"},
 		),
 	}
 }