diff --git a/src/test/java/com/diamonddagger590/mccore/registry/manager/ManagerRegistryTest.java b/src/test/java/com/diamonddagger590/mccore/registry/manager/ManagerRegistryTest.java
index cc41d02..7a81329 100644
--- a/src/test/java/com/diamonddagger590/mccore/registry/manager/ManagerRegistryTest.java
+++ b/src/test/java/com/diamonddagger590/mccore/registry/manager/ManagerRegistryTest.java
@@ -147,4 +147,18 @@ void registered_returnsTrue_whenSubclassInstanceRegisteredAndCheckedBySubclassIn
         registry().register(subManager);
         assertTrue(registry().registered(new TestManagerASub()));
     }
+
+    @Test
+    @DisplayName("Given only a different manager registered, when checking registered by instance, then returns false")
+    void registered_returnsFalse_whenOnlyNonMatchingManagerRegistered() {
+        registry().register(new TestManagerB());
+        assertFalse(registry().registered(new TestManagerA()));
+    }
+
+    @Test
+    @DisplayName("Given only a different manager registered, when checking registered by key, then returns false")
+    void registered_returnsFalse_whenOnlyNonMatchingManagerRegisteredByKey() {
+        registry().register(new TestManagerB());
+        assertFalse(registry().registered(KEY_A));
+    }
 }
diff --git a/src/test/java/com/diamonddagger590/mccore/util/MethodsTest.java b/src/test/java/com/diamonddagger590/mccore/util/MethodsTest.java
index bb69e21..987335d 100644
--- a/src/test/java/com/diamonddagger590/mccore/util/MethodsTest.java
+++ b/src/test/java/com/diamonddagger590/mccore/util/MethodsTest.java
@@ -726,6 +726,15 @@ void lookAt_returnsNonInfiniteValues_whenTargetIsSamePosition() {
         assertFalse(Float.isInfinite(result.getPitch()), "Pitch should not be infinite");
     }
 
+    @Test
+    @DisplayName("Given target on positive Z with same X, when calculating lookAt, then yaw is zero and pitch is near zero")
+    void lookAt_setsYawToZero_whenTargetIsOnPositiveZWithSameX() {
+        org.bukkit.Location origin = new org.bukkit.Location(null, 0, 0, 0);
+        org.bukkit.Location target = new org.bukkit.Location(null, 0, 0, 10);
+        org.bukkit.Location result = Methods.lookAt(origin, target);
+        assertEquals(0.0, result.getYaw(), 0.01);
+        assertEquals(0.0, result.getPitch(), 0.01);
+    }
 
     // ── getMinecraftKey ─────────────────────────────────────────────────────