diff --git a/Makefile b/Makefile
index 71d2a48af9a3..656b0847dd3d 100644
--- a/Makefile
+++ b/Makefile
@@ -350,6 +350,8 @@ $(C_BUILDDIR)/pokedex_plus_hgss.o: CFLAGS := -mthumb -mthumb-interwork -O2 -mabi
 # Annoyingly we can't turn this on just for src/data/trainers.h
 $(C_BUILDDIR)/data.o: CFLAGS += -fno-show-column -fno-diagnostics-show-caret
 
+$(TEST_BUILDDIR)/%.o: CFLAGS := -mthumb -mthumb-interwork -O2 -mabi=apcs-gnu -mtune=arm7tdmi -march=armv4t -Wno-pointer-to-int-cast -Werror -Wall -Wno-strict-aliasing -Wno-attribute-alias -Woverride-init
+
 # Dependency rules (for the *.c & *.s sources to .o files)
 # Have to be explicit or else missing files won't be reported.
 
diff --git a/include/constants/generational_changes.h b/include/constants/generational_changes.h
new file mode 100644
index 000000000000..557b34b6537e
--- /dev/null
+++ b/include/constants/generational_changes.h
@@ -0,0 +1,10 @@
+#ifndef GUARD_CONSTANTS_GENERATIONAL_CHANGES_H
+#define GUARD_CONSTANTS_GENERATIONAL_CHANGES_H
+
+enum GenConfigTag
+{
+    GEN_CONFIG_GALE_WINGS,
+    GEN_CONFIG_COUNT
+};
+
+#endif // GUARD_CONSTANTS_GENERATIONAL_CHANGES_H
diff --git a/include/generational_changes.h b/include/generational_changes.h
new file mode 100644
index 000000000000..5a726007c36e
--- /dev/null
+++ b/include/generational_changes.h
@@ -0,0 +1,41 @@
+#ifndef GUARD_GENERATIONAL_CHANGES_H
+#define GUARD_GENERATIONAL_CHANGES_H
+
+#include "constants/generational_changes.h"
+#include "config/battle.h"
+
+static const u8 sGenerationalChanges[GEN_CONFIG_COUNT] =
+{
+    [GEN_CONFIG_GALE_WINGS] = B_GALE_WINGS,
+};
+
+#if TESTING
+extern u8 *gGenerationalChangesTestOverride;
+#endif
+
+static inline u32 GetGenConfig(enum GenConfigTag configTag)
+{
+    if (configTag >= GEN_CONFIG_COUNT) return GEN_LATEST;
+#if TESTING
+    if (gGenerationalChangesTestOverride == NULL) return sGenerationalChanges[configTag];
+    return gGenerationalChangesTestOverride[configTag];
+#else
+    return sGenerationalChanges[configTag];
+#endif
+}
+
+static inline void SetGenConfig(enum GenConfigTag configTag, u32 value)
+{
+#if TESTING
+    if (configTag >= GEN_CONFIG_COUNT) return;
+    if (gGenerationalChangesTestOverride == NULL) return;
+    gGenerationalChangesTestOverride[configTag] = value;
+#endif
+}
+
+#if TESTING
+void TestInitConfigData(void);
+void TestFreeConfigData(void);
+#endif
+
+#endif // GUARD_GENERATIONAL_CHANGES_H
diff --git a/include/test/battle.h b/include/test/battle.h
index 7cf70539881a..0b44ea02fb92 100644
--- a/include/test/battle.h
+++ b/include/test/battle.h
@@ -287,6 +287,16 @@
  *     GIVEN {
  *         FLAG_SET(FLAG_SYS_EXAMPLE_FLAG);
  *
+ * WITH_CONFIG(configTag, value)
+ * Runs the test with a specified config override. `configTag` must be
+ * of `enum GenConfigTag`
+ * Example:
+ *     GIVEN {
+ *         WITH_CONFIG(GEN_CONFIG_GALE_WINGS, GEN_6);
+ *     }
+ * The `value` may be inferred from a local variable, e.g. set by
+ * PARAMETRIZE.
+ *
  * PLAYER(species) and OPPONENT(species)
  * Adds the species to the player's or opponent's party respectively.
  * The Pokémon can be further customized with the following functions:
@@ -488,6 +498,7 @@
 #include "battle.h"
 #include "battle_anim.h"
 #include "data.h"
+#include "generational_changes.h"
 #include "item.h"
 #include "random.h"
 #include "recorded_battle.h"
@@ -822,6 +833,7 @@ struct moveWithPP {
 #define AI_LOG AILogScores(__LINE__)
 
 #define FLAG_SET(flagId) SetFlagForTest(__LINE__, flagId)
+#define WITH_CONFIG(configTag, value) TestSetConfig(__LINE__, configTag, value)
 
 #define PLAYER(species) for (OpenPokemon(__LINE__, B_SIDE_PLAYER, species); gBattleTestRunnerState->data.currentMon; ClosePokemon(__LINE__))
 #define OPPONENT(species) for (OpenPokemon(__LINE__, B_SIDE_OPPONENT, species); gBattleTestRunnerState->data.currentMon; ClosePokemon(__LINE__))
@@ -855,6 +867,7 @@ struct moveWithPP {
 #define Shadow(isShadow) Shadow_(__LINE__, shadow)
 
 void SetFlagForTest(u32 sourceLine, u16 flagId);
+void TestSetConfig(u32 sourceLine, enum GenConfigTag configTag, u32 value);
 void ClearFlagAfterTest(void);
 void OpenPokemon(u32 sourceLine, u32 side, u32 species);
 void ClosePokemon(u32 sourceLine);
diff --git a/src/battle_main.c b/src/battle_main.c
index 075dd3dd3c78..62f5a312029e 100644
--- a/src/battle_main.c
+++ b/src/battle_main.c
@@ -24,6 +24,7 @@
 #include "event_data.h"
 #include "evolution_scene.h"
 #include "field_weather.h"
+#include "generational_changes.h"
 #include "graphics.h"
 #include "gpu_regs.h"
 #include "international_string_util.h"
@@ -4849,7 +4850,7 @@ s8 GetMovePriority(u32 battler, u16 move)
         return gMovesInfo[MOVE_MAX_GUARD].priority;
 
     if (ability == ABILITY_GALE_WINGS
-        && (B_GALE_WINGS < GEN_7 || BATTLER_MAX_HP(battler))
+        && (GetGenConfig(GEN_CONFIG_GALE_WINGS) < GEN_7 || BATTLER_MAX_HP(battler))
         && gMovesInfo[move].type == TYPE_FLYING)
     {
         priority++;
diff --git a/src/generational_changes.c b/src/generational_changes.c
new file mode 100644
index 000000000000..1ad29aa675e7
--- /dev/null
+++ b/src/generational_changes.c
@@ -0,0 +1,19 @@
+#include "global.h"
+#include "generational_changes.h"
+#include "malloc.h"
+#include "constants/generational_changes.h"
+
+#if TESTING
+EWRAM_DATA u8 *gGenerationalChangesTestOverride = NULL;
+
+void TestInitConfigData(void)
+{
+    gGenerationalChangesTestOverride = Alloc(sizeof(sGenerationalChanges));
+    memcpy(gGenerationalChangesTestOverride, sGenerationalChanges, sizeof(sGenerationalChanges));
+}
+
+void TestFreeConfigData(void)
+{
+    TRY_FREE_AND_SET_NULL(gGenerationalChangesTestOverride)
+}
+#endif
diff --git a/test/battle/ability/gale_wings.c b/test/battle/ability/gale_wings.c
index eff458964927..c7a03d09148b 100644
--- a/test/battle/ability/gale_wings.c
+++ b/test/battle/ability/gale_wings.c
@@ -1,20 +1,22 @@
 #include "global.h"
 #include "test/battle.h"
 
-SINGLE_BATTLE_TEST("Gale Wings only grants priority at full HP")
+SINGLE_BATTLE_TEST("Gale Wings only grants priority at full HP (Gen 7+)")
 {
-    u16 hp;
-    PARAMETRIZE { hp = 100; }
-    PARAMETRIZE { hp = 99; }
+    u32 hp, config;
+    PARAMETRIZE { hp = 100; config = GEN_7; }
+    PARAMETRIZE { hp = 99;  config = GEN_7; }
+    PARAMETRIZE { hp = 100; config = GEN_6; }
+    PARAMETRIZE { hp = 99;  config = GEN_6; }
     GIVEN {
-        ASSUME(B_GALE_WINGS >= GEN_7);
+        WITH_CONFIG(GEN_CONFIG_GALE_WINGS, config);
         ASSUME(gMovesInfo[MOVE_AERIAL_ACE].type == TYPE_FLYING);
         PLAYER(SPECIES_TALONFLAME) { Ability(ABILITY_GALE_WINGS); HP(hp); MaxHP(100); Speed(1);}
         OPPONENT(SPECIES_WOBBUFFET) { Speed(100);};
     } WHEN {
         TURN { MOVE(player, MOVE_AERIAL_ACE); }
     } SCENE {
-        if (hp == 100) {
+        if (hp == 100 || config <= GEN_6) {
             MESSAGE("Talonflame used Aerial Ace!");
             MESSAGE("The opposing Wobbuffet used Celebrate!");
         }
@@ -31,7 +33,6 @@ SINGLE_BATTLE_TEST("Gale Wings only grants priority to Flying-type moves")
     PARAMETRIZE { move = MOVE_AERIAL_ACE; }
     PARAMETRIZE { move = MOVE_FLARE_BLITZ; }
     GIVEN {
-        ASSUME(B_GALE_WINGS >= GEN_7);
         ASSUME(gMovesInfo[MOVE_AERIAL_ACE].type == TYPE_FLYING);
         ASSUME(gMovesInfo[MOVE_FLARE_BLITZ].type == TYPE_FIRE);
         PLAYER(SPECIES_TALONFLAME) { Ability(ABILITY_GALE_WINGS); HP(100); MaxHP(100); Speed(1);}
@@ -58,7 +59,6 @@ SINGLE_BATTLE_TEST("Gale Wings doesn't increase priority of Flying-type Natural
     PARAMETRIZE { move = MOVE_JUDGMENT; heldItem = ITEM_SKY_PLATE; }
     PARAMETRIZE { move = MOVE_HIDDEN_POWER; heldItem = ITEM_NONE; }
     GIVEN {
-        ASSUME(B_GALE_WINGS >= GEN_7);
         ASSUME(gMovesInfo[MOVE_NATURAL_GIFT].effect == EFFECT_NATURAL_GIFT);
         ASSUME(gMovesInfo[MOVE_JUDGMENT].effect == EFFECT_CHANGE_TYPE_ON_ITEM);
         // IV combinations sourced from https://www.smogon.com/forums/threads/hidden-power-iv-combinations.78083/
diff --git a/test/test_runner_battle.c b/test/test_runner_battle.c
index c55ef489b3e3..9484e6df6cf4 100644
--- a/test/test_runner_battle.c
+++ b/test/test_runner_battle.c
@@ -160,6 +160,7 @@ static void BattleTest_SetUp(void *data)
 {
     const struct BattleTest *test = data;
     memset(STATE, 0, sizeof(*STATE));
+    TestInitConfigData();
     InvokeTestFunction(test);
     STATE->parameters = STATE->parametersCount;
     if (STATE->parametersCount == 0 && test->resultsSize > 0)
@@ -1417,6 +1418,7 @@ static void BattleTest_TearDown(void *data)
     // Free resources that aren't cleaned up when the battle was
     // aborted unexpectedly.
     ClearFlagAfterTest();
+    TestFreeConfigData();
     if (STATE->tearDownBattle)
         TearDownBattle();
 }
@@ -1513,6 +1515,12 @@ void SetFlagForTest(u32 sourceLine, u16 flagId)
     FlagSet(flagId);
 }
 
+void TestSetConfig(u32 sourceLine, enum GenConfigTag configTag, u32 value)
+{
+    INVALID_IF(!STATE->runGiven, "WITH_CONFIG outside of GIVEN");
+    SetGenConfig(configTag, value);
+}
+
 void ClearFlagAfterTest(void)
 {
     if (DATA.flagId != 0)