Move image proxy filter to template functions

template/functions_test.go

@@ -5,10 +5,15 @@
 package template // import "miniflux.app/template"
 
 import (
+	"net/http"
+	"os"
 	"testing"
 	"time"
 
+	"miniflux.app/config"
 	"miniflux.app/locale"
+
+	"github.com/gorilla/mux"
 )
 
 func TestDict(t *testing.T) {
@@ -125,3 +130,139 @@ func TestElapsedTime(t *testing.T) {
 		}
 	}
 }
+
+func TestProxyFilterWithHttpDefault(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("PROXY_IMAGES", "http-only")
+	c := config.NewConfig()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/proxy/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
+
+	input := `<p><img src="http://website/folder/image.png" alt="Test"/></p>`
+	output := imageProxyFilter(r, c, input)
+	expected := `<p><img src="/proxy/aHR0cDovL3dlYnNpdGUvZm9sZGVyL2ltYWdlLnBuZw==" alt="Test"/></p>`
+
+	if expected != output {
+		t.Errorf(`Not expected output: got "%s" instead of "%s"`, output, expected)
+	}
+}
+
+func TestProxyFilterWithHttpsDefault(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("PROXY_IMAGES", "http-only")
+	c := config.NewConfig()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/proxy/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
+
+	input := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
+	output := imageProxyFilter(r, c, input)
+	expected := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
+
+	if expected != output {
+		t.Errorf(`Not expected output: got "%s" instead of "%s"`, output, expected)
+	}
+}
+
+func TestProxyFilterWithHttpNever(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("PROXY_IMAGES", "none")
+	c := config.NewConfig()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/proxy/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
+
+	input := `<p><img src="http://website/folder/image.png" alt="Test"/></p>`
+	output := imageProxyFilter(r, c, input)
+	expected := input
+
+	if expected != output {
+		t.Errorf(`Not expected output: got "%s" instead of "%s"`, output, expected)
+	}
+}
+
+func TestProxyFilterWithHttpsNever(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("PROXY_IMAGES", "none")
+	c := config.NewConfig()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/proxy/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
+
+	input := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
+	output := imageProxyFilter(r, c, input)
+	expected := input
+
+	if expected != output {
+		t.Errorf(`Not expected output: got "%s" instead of "%s"`, output, expected)
+	}
+}
+
+func TestProxyFilterWithHttpAlways(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("PROXY_IMAGES", "all")
+	c := config.NewConfig()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/proxy/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
+
+	input := `<p><img src="http://website/folder/image.png" alt="Test"/></p>`
+	output := imageProxyFilter(r, c, input)
+	expected := `<p><img src="/proxy/aHR0cDovL3dlYnNpdGUvZm9sZGVyL2ltYWdlLnBuZw==" alt="Test"/></p>`
+
+	if expected != output {
+		t.Errorf(`Not expected output: got "%s" instead of "%s"`, output, expected)
+	}
+}
+
+func TestProxyFilterWithHttpsAlways(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("PROXY_IMAGES", "all")
+	c := config.NewConfig()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/proxy/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
+
+	input := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
+	output := imageProxyFilter(r, c, input)
+	expected := `<p><img src="/proxy/aHR0cHM6Ly93ZWJzaXRlL2ZvbGRlci9pbWFnZS5wbmc=" alt="Test"/></p>`
+
+	if expected != output {
+		t.Errorf(`Not expected output: got "%s" instead of "%s"`, output, expected)
+	}
+}
+
+func TestProxyFilterWithHttpInvalid(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("PROXY_IMAGES", "invalid")
+	c := config.NewConfig()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/proxy/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
+
+	input := `<p><img src="http://website/folder/image.png" alt="Test"/></p>`
+	output := imageProxyFilter(r, c, input)
+	expected := `<p><img src="/proxy/aHR0cDovL3dlYnNpdGUvZm9sZGVyL2ltYWdlLnBuZw==" alt="Test"/></p>`
+
+	if expected != output {
+		t.Errorf(`Not expected output: got "%s" instead of "%s"`, output, expected)
+	}
+}
+
+func TestProxyFilterWithHttpsInvalid(t *testing.T) {
+	os.Clearenv()
+	os.Setenv("PROXY_IMAGES", "invalid")
+	c := config.NewConfig()
+
+	r := mux.NewRouter()
+	r.HandleFunc("/proxy/{encodedURL}", func(w http.ResponseWriter, r *http.Request) {}).Name("proxy")
+
+	input := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
+	output := imageProxyFilter(r, c, input)
+	expected := `<p><img src="https://website/folder/image.png" alt="Test"/></p>`
+
+	if expected != output {
+		t.Errorf(`Not expected output: got "%s" instead of "%s"`, output, expected)
+	}
+}