diff --git a/SerialPrograms/Source/VideoGames/PokemonFRLG/Inference/Menus/PokemonFRLG_BagDetector.cpp b/SerialPrograms/Source/VideoGames/PokemonFRLG/Inference/Menus/PokemonFRLG_BagDetector.cpp
index efd44bf464..323a0f3899 100644
--- a/SerialPrograms/Source/VideoGames/PokemonFRLG/Inference/Menus/PokemonFRLG_BagDetector.cpp
+++ b/SerialPrograms/Source/VideoGames/PokemonFRLG/Inference/Menus/PokemonFRLG_BagDetector.cpp
@@ -12,6 +12,7 @@
 #include "CommonTools/Images/SolidColorTest.h"
 #include "CommonTools/Images/ImageFilter.h"
 #include "CommonTools/Images/WaterfillUtilities.h"
+#include "Tests/ImageUnitTest.h"
 #include "PokemonFRLG_BagDetector.h"
 
 
@@ -23,7 +24,9 @@ namespace PokemonFRLG{
 BagDetector::BagDetector(Color color)
     : m_bag_shadow_box(0.131250, 0.608173, 0.068269, 0.001442)
     , m_pocket_underline_box(0.043269, 0.137259, 0.279808, 0.005769)
-    , m_menu_top_box(0.029808, 0.029086, 0.947115, 0.003606)
+    //  Stops short of the red arrow drawn over the frame once the list is
+    //  scrolled down.
+    , m_menu_top_box(0.029808, 0.029086, 0.550000, 0.003606)
     , m_menu_right_box(0.977404, 0.034134, 0.005288, 0.597837)
 {}
 void BagDetector::make_overlays(VideoOverlaySet& items) const{
@@ -54,6 +57,49 @@ bool BagDetector::detect(const ImageViewRGB32& screen){
 }
 
 
+class Test_BagDetector : public ImageUnitTest{
+public:
+    Test_BagDetector(const std::string& image, bool expected)
+        : ImageUnitTest("PokemonFRLG::BagDetector - " + image, {image})
+        , m_expected(expected)
+    {}
+
+    virtual UnitTestResult run_on_images(
+        Logger&, CancellableScope&,
+        const std::vector<ImageRGB32>& images
+    ) const override{
+        BagDetector detector(COLOR_RED);
+        const ImageRGB32& image = images[0];
+        const bool result = detector.detect(image);
+        if (result != m_expected){
+            return std::string("Expected bag = ") + (m_expected ? "true" : "false") +
+                ", got " + (result ? "true" : "false");
+        }
+        return true;
+    }
+
+private:
+    bool m_expected;
+};
+
+void add_tests_BagDetector(UnitTestDatabase& database){
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/Items_Top_True.png", true);
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/KeyItems_Top_True.png", true);
+    //  Scrolled down: a red up-arrow covers the middle of the top frame.
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/Items_Scrolled_True.png", true);
+
+    //  A girl's bag, drawn differently from the boy's.
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/Items_Top_Girl_True.png", true);
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/Items_Potion_Girl_True.png", true);
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/KeyItems_Top_Girl_True.png", true);
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/PokeBalls_Top_Girl_True.png", true);
+
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/Overworld_Route24_False.png", false);
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/Overworld_Bedroom_Girl_False.png", false);
+    database.add<Test_BagDetector>("PokemonFRLG/Bag/StartMenu_Girl_False.png", false);
+}
+
+
 
 }
 }
diff --git a/SerialPrograms/Source/VideoGames/PokemonFRLG/Inference/Menus/PokemonFRLG_BagDetector.h b/SerialPrograms/Source/VideoGames/PokemonFRLG/Inference/Menus/PokemonFRLG_BagDetector.h
index ee3d4bd1a4..d8170289a8 100644
--- a/SerialPrograms/Source/VideoGames/PokemonFRLG/Inference/Menus/PokemonFRLG_BagDetector.h
+++ b/SerialPrograms/Source/VideoGames/PokemonFRLG/Inference/Menus/PokemonFRLG_BagDetector.h
@@ -9,6 +9,7 @@
 
 #include <chrono>
 #include "Common/Cpp/Color.h"
+#include "Common/Cpp/TestRunners/UnitTestDatabase.h"
 #include "CommonFramework/ImageTools/ImageBoxes.h"
 #include "CommonFramework/VideoPipeline/VideoOverlayScopes.h"
 #include "CommonTools/VisualDetector.h"
@@ -42,6 +43,9 @@ class BagWatcher : public DetectorToFinder<BagDetector>{
 };
 
 
+void add_tests_BagDetector(UnitTestDatabase& database);
+
+
 
 }
 }
diff --git a/SerialPrograms/Source/VideoGames/PokemonFRLG/PokemonFRLG_Tests.cpp b/SerialPrograms/Source/VideoGames/PokemonFRLG/PokemonFRLG_Tests.cpp
index d51e585590..23e40ab5da 100644
--- a/SerialPrograms/Source/VideoGames/PokemonFRLG/PokemonFRLG_Tests.cpp
+++ b/SerialPrograms/Source/VideoGames/PokemonFRLG/PokemonFRLG_Tests.cpp
@@ -13,6 +13,7 @@
 #include "Inference/Dialogs/PokemonFRLG_DialogDetector.h"
 #include "Inference/Dialogs/PokemonFRLG_PrizeSelectDetector.h"
 #include "Inference/Map/PokemonFRLG_PokemonLeagueDetectors.h"
+#include "Inference/Menus/PokemonFRLG_BagDetector.h"
 #include "Inference/Menus/PokemonFRLG_PartyEmptySlotDetector.h"
 #include "Inference/Menus/PokemonFRLG_PartyHeldItemDetector.h"
 #include "Inference/Menus/PokemonFRLG_PartyMenuDetector.h"
@@ -277,6 +278,7 @@ void add_tests(UnitTestDatabase& database){
     add_tests_EliteFourRoomDetector(database);
     add_tests_HallOfFameSavingDetector(database);
     add_tests_BattleMoveSelectionArrow(database);
+    add_tests_BagDetector(database);
     add_tests_ExitWildBattle(database);
 }