Add puller sanity test (#24885)

* Add puller sanity test

* weh

* NRTs

Content.IntegrationTests/Tests/Puller/PullerTest.cs

@@ -0,0 +1,45 @@
+using Content.Shared.Hands.Components;
+using Content.Shared.Prototypes;
+using Content.Shared.Pulling.Components;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Prototypes;
+
+namespace Content.IntegrationTests.Tests.Puller;
+
+#nullable enable
+
+[TestFixture]
+public sealed class PullerTest
+{
+    /// <summary>
+    /// Checks that needsHands on PullerComponent is not set on mobs that don't even have hands.
+    /// </summary>
+    [Test]
+    public async Task PullerSanityTest()
+    {
+        await using var pair = await PoolManager.GetServerClient();
+        var server = pair.Server;
+
+        var compFactory = server.ResolveDependency<IComponentFactory>();
+        var protoManager = server.ResolveDependency<IPrototypeManager>();
+
+        await server.WaitAssertion(() =>
+        {
+            Assert.Multiple(() =>
+            {
+                foreach (var proto in protoManager.EnumeratePrototypes<EntityPrototype>())
+                {
+                    if (!proto.TryGetComponent(out SharedPullerComponent? puller))
+                        continue;
+
+                    if (!puller.NeedsHands)
+                        continue;
+
+                    Assert.That(proto.HasComponent<HandsComponent>(compFactory), $"Found puller {proto} with NeedsHand pulling but has no hands?");
+                }
+            });
+        });
+
+        await pair.CleanReturnAsync();
+    }
+}