test: database closed-db error paths + pure goproxy/generic/helm/repotype gaps

internal/provider/helm/helm_extra_test.go

@@ -0,0 +1,18 @@
+package helm
+
+import "testing"
+
+func TestHelmContentTypeBranches(t *testing.T) {
+	p := &Provider{}
+	for path, want := range map[string]string{
+		"charts/x-1.0.0.tgz": "application/gzip",
+		"x.tar.gz":           "application/gzip",
+		"index.yaml":         "text/yaml",
+		"x.yml":              "text/yaml",
+		"other":              "application/octet-stream",
+	} {
+		if got := p.ContentType(path); got != want {
+			t.Errorf("ContentType(%q)=%q want %q", path, got, want)
+		}
+	}
+}