From 4cf16febf68a24128b4a9b75a83e4930f127151b Mon Sep 17 00:00:00 2001
From: Lam Wei Lun <weilun.lam@gmail.com>
Date: Wed, 14 Oct 2026 18:23:32 +0800
Subject: [PATCH] Fix plugin unit test

---
 tests/slic3rutils/test_plugin_resource_texture.cpp | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/tests/slic3rutils/test_plugin_resource_texture.cpp b/tests/slic3rutils/test_plugin_resource_texture.cpp
index efe7cfbb86..c57a39b5e1 100644
--- a/tests/slic3rutils/test_plugin_resource_texture.cpp
+++ b/tests/slic3rutils/test_plugin_resource_texture.cpp
@@ -258,13 +258,17 @@ std::vector<unsigned char> make_gray_bmp(int width, int height, uint8_t value)
     return bmp;
 }
 
-// The app calls wxInitAllImageHandlers() during startup; the test binary has no app.
+// The app calls wxInitAllImageHandlers() during startup and, before that, wxEntryStart() runs the
+// wxImageModule, which registers the standard handlers. wxInitAllImageHandlers() adds PNG, JPEG and
+// the rest but NOT the BMP handler, so a test binary without a wxApp must add the standard set too or
+// a .bmp texture cannot be loaded here at all.
 void ensure_wx_image_handlers()
 {
     static bool initialized = false;
     if (initialized)
         return;
     initialized = true;
+    wxImage::InitStandardHandlers();
     wxInitAllImageHandlers();
 }