1 files changed, 50 insertions, 0 deletions
diff --git a/internal/world/ground_test.go b/internal/world/ground_test.go
new file mode 100644
index 0000000..ef77766
--- /dev/null
+++ b/internal/world/ground_test.go
@@ -0,0 +1,50 @@
+package world
+
+import "testing"
+
+// TestRemoveReservedItemSkipsOtherPlayersReservations: the take loop must
+// apply the same ownership check as the availability pass. With a stack
+// reserved for Bob stored before a public stack, Alice's pickup must take
+// the public stack only — consuming Bob's reservation instead silently
+// destroys his loot while telling Alice the ground still holds it.
+func TestRemoveReservedItemSkipsOtherPlayersReservations(t *testing.T) {
+	w := New(t.TempDir())
+	w.AddReservedItem(1, "ore", 10, "bob")
+	w.AddGroundItem(1, "ore", 10)
+
+	taken, ok := w.RemoveReservedItem(1, "ore", 10, "alice")
+	if !ok || taken != 10 {
+		t.Fatalf("alice's pickup of the public stack = (%d, %v), want (10, true)", taken, ok)
+	}
+	if got := w.AccessibleGround(1, "alice")["ore"]; got != 0 {
+		t.Errorf("alice still sees %d ore after taking the public stack; removal consumed reserved stock", got)
+	}
+	// Bob's reserved stack must be untouched and still his to take.
+	if got := w.AccessibleGround(1, "bob")["ore"]; got != 10 {
+		t.Errorf("bob's reserved stack = %d, want 10", got)
+	}
+	bobTaken, ok := w.RemoveReservedItem(1, "ore", 10, "bob")
+	if !ok || bobTaken != 10 {
+		t.Errorf("bob's pickup of his own reservation = (%d, %v), want (10, true)", bobTaken, ok)
+	}
+}
+
+// TestRemoveAvailableItemTakesAccessibleStock: a request far larger than
+// the ground stock succeeds and takes exactly what is accessible, skipping
+// entries reserved for other players.
+func TestRemoveAvailableItemTakesAccessibleStock(t *testing.T) {
+	w := New(t.TempDir())
+	w.AddReservedItem(1, "credits", 10, "bob")
+	w.AddGroundItem(1, "credits", 5)
+
+	taken := w.RemoveAvailableItem(1, "credits", 999999, "alice")
+	if taken != 5 {
+		t.Fatalf("remove-available took %d, want the 5 accessible credits", taken)
+	}
+	if got := w.AccessibleGround(1, "alice")["credits"]; got != 0 {
+		t.Errorf("alice still sees %d accessible credits", got)
+	}
+	if got := w.AccessibleGround(1, "bob")["credits"]; got != 10 {
+		t.Errorf("bob's reserved credits = %d, want 10", got)
+	}
+}