Initial project import

tools/v/vlib/gg/image_private_test.v

@@ -0,0 +1,27 @@
+// vtest build: !docker-ubuntu-musl // needs GL/gl.h
+module gg
+
+import os
+
+const background_path = os.join_path(@VEXEROOT, 'examples/flappylearning/assets/img/background.png')
+
+fn test_load_image_loads_supported_file_contents() {
+	img := load_image(background_path)!
+	assert img.width > 0
+	assert img.height > 0
+	assert img.nr_channels == 4
+	assert img.path == background_path
+}
+
+fn test_load_image_returns_error_for_unsupported_file_contents() {
+	file := os.join_path(os.vtmp_dir(), 'gg_unsupported_image_${os.getpid()}.jpg')
+	os.write_file(file, 'not an image') or { panic(err) }
+	defer {
+		os.rm(file) or {}
+	}
+	load_image(file) or {
+		assert err.msg().contains('stbi_image failed to load')
+		return
+	}
+	assert false
+}