remote: Test HTTP validation

remote/http.go

@@ -34,6 +34,9 @@ func (c *HTTPRemoteClient) validateConfig(conf map[string]string) error {
 	if err != nil {
 		return fmt.Errorf("failed to parse url: %v", err)
 	}
+	if url.Scheme != "http" && url.Scheme != "https" {
+		return fmt.Errorf("invalid url: %s", url)
+	}
 	c.url = url
 	return nil
 }

remote/http_test.go

@@ -19,6 +19,23 @@ func TestHTTPRemote_Interface(t *testing.T) {
 	}
 }
 
+func TestHTTPRemote_Validate(t *testing.T) {
+	conf := map[string]string{}
+	if _, err := NewHTTPRemoteClient(conf); err == nil {
+		t.Fatalf("expect error")
+	}
+
+	conf["url"] = ""
+	if _, err := NewHTTPRemoteClient(conf); err == nil {
+		t.Fatalf("expect error")
+	}
+
+	conf["url"] = "http://cool.com"
+	if _, err := NewHTTPRemoteClient(conf); err != nil {
+		t.Fatalf("err: %v", err)
+	}
+}
+
 func TestHTTPRemote_GetState(t *testing.T) {
 	type tcase struct {
 		Code      int