Fix content.integration tests warnings (#17817)

Co-authored-by: metalgearsloth <31366439+metalgearsloth@users.noreply.github.com>

Content.IntegrationTests/Tests/Body/SaveLoadReparentTest.cs

@@ -1,10 +1,8 @@
-using System.Linq;
-using System.Threading.Tasks;
+using System.Collections.Generic;
+using System.Linq;
 using Content.Shared.Body.Components;
 using Content.Shared.Body.Systems;
-using NUnit.Framework;
 using Robust.Server.GameObjects;
-using Robust.Server.Maps;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
 
@@ -85,10 +83,22 @@ public sealed class SaveLoadReparentTest
                 });
             }
 
-            Assert.That(entities
-                .EntityQuery<BodyComponent>()
-                .Where(e => entities.GetComponent<MetaDataComponent>(e.Owner).EntityPrototype!.Name ==
-                            "HumanBodyDummy"), Is.Not.Empty);
+            // Converts an entity query enumerator to an enumerable.
+            static IEnumerable<(EntityUid Uid, TComp Comp)> EnumerateQueryEnumerator<TComp>(EntityQueryEnumerator<TComp> query)
+                where TComp : Component
+            {
+                while (query.MoveNext(out var uid, out var comp))
+                    yield return (uid, comp);
+            }
+
+            Assert.That(
+                EnumerateQueryEnumerator(
+                    entities.EntityQueryEnumerator<BodyComponent>()
+                ).Where((e) =>
+                    entities.GetComponent<MetaDataComponent>(e.Uid).EntityPrototype!.Name == "HumanBodyDummy"
+                ),
+                Is.Not.Empty
+            );
 
             const string mapPath = $"/{nameof(SaveLoadReparentTest)}{nameof(Test)}map.yml";
 
@@ -96,22 +106,26 @@ public sealed class SaveLoadReparentTest
             maps.DeleteMap(mapId);
 
             mapId = maps.CreateMap();
-            mapLoader.LoadMap(mapId, mapPath);
+            Assert.That(mapLoader.TryLoad(mapId, mapPath, out _), Is.True);
 
-            var query = entities
-                .EntityQuery<BodyComponent>()
-                .Where(e => entities.GetComponent<MetaDataComponent>(e.Owner).EntityPrototype!.Name == "HumanBodyDummy")
-                .ToArray();
+            var query = EnumerateQueryEnumerator(
+                    entities.EntityQueryEnumerator<BodyComponent>()
+                ).Where((e) =>
+                    entities.GetComponent<MetaDataComponent>(e.Uid).EntityPrototype!.Name == "HumanBodyDummy"
+                ).ToArray();
 
             Assert.That(query, Is.Not.Empty);
-            foreach (var body in query)
+            foreach (var (uid, body) in query)
             {
-                human = body.Owner;
+                human = uid;
                 parts = bodySystem.GetBodyChildren(human).ToArray();
                 organs = bodySystem.GetBodyOrgans(human).ToArray();
 
-                Assert.That(parts, Is.Not.Empty);
-                Assert.That(organs, Is.Not.Empty);
+                Assert.Multiple(() =>
+                {
+                    Assert.That(parts, Is.Not.Empty);
+                    Assert.That(organs, Is.Not.Empty);
+                });
 
                 foreach (var (id, component) in parts)
                 {