Enable trivy db download and update

pkg/extensions/search/cve/BUILD.bazel

@@ -1,4 +1,4 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("@io_bazel_rules_go//go:def.bzl", "go_library", "go_test")
 
 go_library(
     name = "go_default_library",
@@ -14,3 +14,14 @@ go_library(
         "@com_github_aquasecurity_trivy//integration/config:go_default_library",
     ],
 )
+
+go_test(
+    name = "go_default_test",
+    srcs = ["cve_test.go"],
+    data = glob(["testdata/**"]),
+    embed = [":go_default_library"],
+    deps = [
+        "//pkg/log:go_default_library",
+        "@com_github_smartystreets_goconvey//convey:go_default_library",
+    ],
+)

pkg/extensions/search/cve/cve_test.go

@@ -0,0 +1,40 @@
+package cveinfo_test
+
+import (
+	"io/ioutil"
+	"os"
+	"testing"
+
+	cveinfo "github.com/anuvu/zot/pkg/extensions/search/cve"
+	"github.com/anuvu/zot/pkg/log"
+	. "github.com/smartystreets/goconvey/convey"
+)
+
+// nolint:gochecknoglobals
+var (
+	cve   *cveinfo.CveInfo
+	dbDir string
+)
+
+func testSetup() error {
+	dir, err := ioutil.TempDir("", "util_test")
+	if err != nil {
+		return err
+	}
+
+	cve = &cveinfo.CveInfo{Log: log.NewLogger("debug", "")}
+
+	dbDir = dir
+
+	return nil
+}
+
+func TestDownloadDB(t *testing.T) {
+	Convey("Download DB", t, func() {
+		err := testSetup()
+		So(err, ShouldBeNil)
+		err = cveinfo.UpdateCVEDb(dbDir, cve.Log)
+		So(err, ShouldBeNil)
+		os.RemoveAll(dbDir)
+	})
+}