Add tests for tags list pagination

Signed-off-by: João Pereira <484633+joaodrp@users.noreply.github.com>

registry/api/v2/urls.go

@@ -128,7 +128,7 @@ func (ub *URLBuilder) BuildCatalogURL(values ...url.Values) (string, error) {
 }
 
 // BuildTagsURL constructs a url to list the tags in the named repository.
-func (ub *URLBuilder) BuildTagsURL(name reference.Named) (string, error) {
+func (ub *URLBuilder) BuildTagsURL(name reference.Named, values ...url.Values) (string, error) {
 	route := ub.cloneRoute(RouteNameTags)
 
 	tagsURL, err := route.URL("name", name.Name())
@@ -136,7 +136,7 @@ func (ub *URLBuilder) BuildTagsURL(name reference.Named) (string, error) {
 		return "", err
 	}
 
-	return tagsURL.String(), nil
+	return appendValuesURL(tagsURL, values...).String(), nil
 }
 
 // BuildManifestURL constructs a url for the manifest identified by name and

registry/api/v2/urls_test.go

@@ -34,6 +34,26 @@ func makeURLBuilderTestCases(urlBuilder *URLBuilder) []urlBuilderTestCase {
 				return urlBuilder.BuildTagsURL(fooBarRef)
 			},
 		},
+		{
+			description:  "test tags url with n query parameter",
+			expectedPath: "/v2/foo/bar/tags/list?n=10",
+			expectedErr:  nil,
+			build: func() (string, error) {
+				return urlBuilder.BuildTagsURL(fooBarRef, url.Values{
+					"n": []string{"10"},
+				})
+			},
+		},
+		{
+			description:  "test tags url with last query parameter",
+			expectedPath: "/v2/foo/bar/tags/list?last=abc-def",
+			expectedErr:  nil,
+			build: func() (string, error) {
+				return urlBuilder.BuildTagsURL(fooBarRef, url.Values{
+					"last": []string{"abc-def"},
+				})
+			},
+		},
 		{
 			description:  "test manifest url tagged ref",
 			expectedPath: "/v2/foo/bar/manifests/tag",