feat(tests): add draw 8bpp font test (#7895)

Signed-off-by: pengyiqiang <pengyiqiang@xiaomi.com>
Co-authored-by: pengyiqiang <pengyiqiang@xiaomi.com>

tests/CMakeLists.txt

@@ -296,6 +296,7 @@ add_library(test_common
         src/test_assets/test_font_montserrat_ascii_1bpp.c
         src/test_assets/test_font_montserrat_ascii_2bpp.c
         src/test_assets/test_font_montserrat_ascii_4bpp.c
+        src/test_assets/test_font_montserrat_ascii_8bpp.c
         src/test_assets/test_font_montserrat_ascii_3bpp_compressed.c
         src/test_assets/test_font_1_bin.c
         src/test_assets/test_font_2_bin.c

tests/src/test_cases/draw/test_draw_label.c

@@ -33,11 +33,13 @@ static void all_labels_create(const char * name, lv_style_t * style)
     LV_FONT_DECLARE(test_font_montserrat_ascii_1bpp);
     LV_FONT_DECLARE(test_font_montserrat_ascii_2bpp);
     LV_FONT_DECLARE(test_font_montserrat_ascii_4bpp);
+    LV_FONT_DECLARE(test_font_montserrat_ascii_8bpp);
     LV_FONT_DECLARE(test_font_montserrat_ascii_3bpp_compressed);
 
     label_create(&test_font_montserrat_ascii_1bpp, style, "1bpp font");
     label_create(&test_font_montserrat_ascii_2bpp, style, "2bpp font");
     label_create(&test_font_montserrat_ascii_4bpp, style, "4bpp font");
+    label_create(&test_font_montserrat_ascii_8bpp, style, "8bpp font");
     label_create(&test_font_montserrat_ascii_3bpp_compressed, style, "3bpp compressed font");
 
     char buf[64];