more tests for proxy

app/rest/proxy/image.go

@@ -59,6 +59,11 @@ func (p Image) Routes() chi.Router {
 			}
 		}()
 
+		if resp.StatusCode != http.StatusOK {
+			w.WriteHeader(resp.StatusCode)
+			return
+		}
+
 		for k, v := range resp.Header {
 			if strings.EqualFold(k, "Content-Type") {
 				w.Header().Set(k, v[0])

app/rest/proxy/image_test.go

@@ -1,9 +1,14 @@
 package proxy
 
 import (
+	"encoding/base64"
+	"fmt"
+	"net/http"
+	"net/http/httptest"
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/require"
 )
 
 func TestPicture_Extract(t *testing.T) {
@@ -52,3 +57,49 @@ func TestPicture_Replace(t *testing.T) {
 		[]string{"http://radio-t.com/img3.png", "http://images.pexels.com/67636/img4.jpeg"})
 	assert.Equal(t, `<img src="/img?src=aHR0cDovL3JhZGlvLXQuY29tL2ltZzMucG5n"/> xyz <img src="/img?src=aHR0cDovL2ltYWdlcy5wZXhlbHMuY29tLzY3NjM2L2ltZzQuanBlZw==">`, r)
 }
+
+func TestImage_Routes(t *testing.T) {
+	img := Image{Enabled: true, RemarkURL: "https://demo.remark42.com", RoutePath: "/api/v1/proxy"}
+	router := img.Routes()
+
+	httpSrv := imgHttpServer(t)
+	defer httpSrv.Close()
+	ts := httptest.NewServer(router)
+	defer ts.Close()
+
+	encodedImgURL := base64.URLEncoding.EncodeToString([]byte(httpSrv.URL + "/image/img1.png"))
+
+	resp, err := http.Get(ts.URL + "/?src=" + encodedImgURL)
+	require.Nil(t, err)
+	assert.Equal(t, 200, resp.StatusCode)
+	t.Logf("%+v", resp.Header)
+	assert.Equal(t, "123", resp.Header["Content-Length"][0])
+	assert.Equal(t, "image/png", resp.Header["Content-Type"][0])
+
+	encodedImgURL = base64.URLEncoding.EncodeToString([]byte(httpSrv.URL + "/image/no-such-image.png"))
+	resp, err = http.Get(ts.URL + "/?src=" + encodedImgURL)
+	require.Nil(t, err)
+	assert.Equal(t, 404, resp.StatusCode)
+}
+
+func TestPicture_Convert(t *testing.T) {
+	img := Image{Enabled: true, RoutePath: "/img"}
+	r := img.Convert(`<img src="http://radio-t.com/img3.png"/> xyz <img src="http://images.pexels.com/67636/img4.jpeg">`)
+	assert.Equal(t, `<img src="/img?src=aHR0cDovL3JhZGlvLXQuY29tL2ltZzMucG5n"/> xyz <img src="/img?src=aHR0cDovL2ltYWdlcy5wZXhlbHMuY29tLzY3NjM2L2ltZzQuanBlZw==">`, r)
+}
+
+func imgHttpServer(t *testing.T) *httptest.Server {
+	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.URL.Path == "/image/img1.png" {
+			t.Log("http img request", r.URL)
+			w.Header().Add("Content-Length", "123")
+			w.Header().Add("Content-Type", "image/png")
+			w.Write([]byte(fmt.Sprintf("%123s", "X")))
+			return
+		}
+		t.Log("http img request - not found", r.URL)
+		w.WriteHeader(404)
+	}))
+
+	return ts
+}