working commit

client.go

@@ -22,6 +22,19 @@ func NewClient() *Client {
 	}
 }
 
+func NewClientWithTransport(transport http.RoundTripper, mwFunc ...MiddlewareFunc) *Client {
+	if transport == nil {
+		transport = NewDefaultTransport()
+	}
+	httpClient := &http.Client{
+		Transport: transport,
+	}
+	return &Client{
+		httpClient: httpClient,
+		userAgent:  "ociClient/1.0",
+	}
+}
+
 func (cli *Client) SetTransport(transport http.RoundTripper) {
 	cli.httpClient.Transport = transport
 }

client_test.go

@@ -33,7 +33,7 @@ func xxxTestClientGetManifest(t *testing.T) {
 	}
 }
 
-func TestClientManifestExists(t *testing.T) {
+func xxxTestClientManifestExists(t *testing.T) {
 	rawrepo := "mirror.gcr.io/alpine"
 	tags := []string{
 		"3.20.0",
@@ -70,7 +70,7 @@ func xxxTestClientBlobExists(t *testing.T) {
 	}
 }
 
-func TestClientGetBlob(t *testing.T) {
+func xxxTestClientGetBlob(t *testing.T) {
 	rawrepos := []string{
 		"mirror.gcr.io/alpine",
 	}

getman.go

@@ -3,6 +3,7 @@ package repocli
 import (
 	"bytes"
 	"context"
+	"errors"
 	"fmt"
 	"net/http"
 	"strconv"
@@ -41,6 +42,10 @@ func (cli *Client) GetManifest(ctx context.Context, rawrepo, tag string) (bool,
 		return exist, mime, man, err
 	}
 	contentLength := resp.Header.Get("Content-Length")
+	if contentLength == "" {
+		err = errors.New("Empty Content-Length header")
+		return exist, mime, man, err
+	}
 	manSize, err := strconv.ParseInt(contentLength, 10, 64)
 	if err != nil {
 		return exist, mime, man, err