1 files changed, 21 insertions, 0 deletions
diff --git a/internal/combat/state_test.go b/internal/combat/state_test.go
new file mode 100644
index 0000000..8005ba3
--- /dev/null
+++ b/internal/combat/state_test.go
@@ -0,0 +1,21 @@
+package combat
+
+import "testing"
+
+// Regression: re-entering combat must release the previous mob, or that mob
+// stays "in combat" forever and no other player can attack it.
+func TestTrackerEnterReleasesPreviousMob(t *testing.T) {
+	tr := NewTracker()
+	tr.Enter("alice", "mobA")
+	tr.Enter("alice", "mobB")
+	if tr.IsMobInCombat("mobA") {
+		t.Fatal("mobA still marked in combat after alice switched targets")
+	}
+	if !tr.IsMobInCombat("mobB") {
+		t.Fatal("mobB not marked in combat")
+	}
+	tr.Leave("alice")
+	if tr.IsMobInCombat("mobB") {
+		t.Fatal("mobB still marked in combat after leave")
+	}
+}