1 files changed, 81 insertions, 0 deletions
diff --git a/internal/game/exit_discovery_test.go b/internal/game/exit_discovery_test.go
new file mode 100644
index 0000000..58177de
--- /dev/null
+++ b/internal/game/exit_discovery_test.go
@@ -0,0 +1,81 @@
+package game
+
+import (
+	"testing"
+
+	"thehouseoficarus/internal/player"
+	"thehouseoficarus/internal/world"
+)
+
+func TestDiscoveredExitFlagKey(t *testing.T) {
+	key := discoveredExitFlag(2001, world.North)
+	if key != "hidden_exit_2001_north" {
+		t.Errorf("unexpected flag key: %q", key)
+	}
+	key = discoveredExitFlag(100, world.Down)
+	if key != "hidden_exit_100_down" {
+		t.Errorf("unexpected flag key: %q", key)
+	}
+}
+
+func TestExitDiscoveredUndiscovered(t *testing.T) {
+	p := &player.Player{}
+	if g := (&Game{}).exitDiscovered(p, 42, world.East); g {
+		t.Error("expected undiscovered to be false")
+	}
+}
+
+func TestExitDiscoveredAfterMark(t *testing.T) {
+	g := &Game{Flags: NewFlagStore()}
+	p := &player.Player{}
+	roomID := 42
+	dir := world.East
+	flagKey := discoveredExitFlag(roomID, dir)
+
+	if g.exitDiscovered(p, roomID, dir) {
+		t.Error("should not be discovered before marking")
+	}
+	g.markExitDiscovered(p, roomID, dir)
+	if !g.exitDiscovered(p, roomID, dir) {
+		t.Error("should be discovered after marking")
+	}
+	if getPlayerFlagInt(p, flagKey) == 0 {
+		t.Error("flag should be set after marking")
+	}
+}
+
+func TestExitDiscoveredGodMode(t *testing.T) {
+	p := &player.Player{GodMode: true}
+	if !(&Game{}).exitDiscovered(p, 99, world.South) {
+		t.Error("god mode should always see exits as discovered")
+	}
+}
+
+func TestExitHiddenFiltered(t *testing.T) {
+	g := &Game{Flags: NewFlagStore()}
+	p := &player.Player{}
+
+	if !g.exitHiddenFiltered(p, 1, world.North, false) {
+		t.Error("non-hidden exit should pass filter")
+	}
+	if g.exitHiddenFiltered(p, 1, world.North, true) {
+		t.Error("hidden undiscovered exit should be filtered")
+	}
+	g.markExitDiscovered(p, 1, world.North)
+	if !g.exitHiddenFiltered(p, 1, world.North, true) {
+		t.Error("hidden discovered exit should pass filter")
+	}
+}
+
+func TestExitDiscoveredDifferentRoom(t *testing.T) {
+	g := &Game{Flags: NewFlagStore()}
+	p := &player.Player{}
+
+	g.markExitDiscovered(p, 10, world.North)
+	if g.exitDiscovered(p, 10, world.East) {
+		t.Error("discovering north should not mark east as discovered")
+	}
+	if g.exitDiscovered(p, 20, world.North) {
+		t.Error("discovering room 10 north should not mark room 20 north")
+	}
+}