add test fixture for territory instances, to fix the tests

ScoutHelper/Utils/CollectionExtensions.cs

@@ -179,6 +179,12 @@ Func<IEnumerable<T>, IEnumerable<U>, R> transform
 			.AsPairs()
 			.AsList();
 
+	public static IEnumerable<(A first, B second)> PairWith<A, B>(
+		this IEnumerable<A> source,
+		Func<A, B> secondSelector
+	) =>
+		source.Select(first => (first, secondSelector(first)));
+
 	#endregion
 
 	#region tuples

ScoutHelperTests/TestFixture.cs

@@ -0,0 +1,25 @@
+using ScoutHelper;
+using ScoutHelper.Config;
+using ScoutHelper.Models;
+using static ScoutHelper.Utils.Utils;
+
+namespace ScoutHelperTests;
+
+public class TestFixture : IDisposable {
+	public Configuration Conf { get; }
+
+	public TestFixture() {
+		Conf = new Configuration();
+		var territoryIds = GetEnumValues<Territory>()
+			.PairWith(territory => (uint)territory)
+			.AsList();
+		territoryIds
+			.Select(territoryId => (territoryId.second, territoryId.first.DefaultInstances()))
+			.UseToUpdate(Conf.Instances);
+		TerritoryExtensions.SetTerritoryInstances(Conf, territoryIds);
+	}
+
+	public void Dispose() {
+		// nothing to dispose yet
+	}
+}

ScoutHelperTests/Utils/UtilsTests.cs

@@ -10,8 +10,12 @@
 
 namespace ScoutHelperTests.Utils;
 
-public class UtilsTests {
+public class UtilsTests : IClassFixture<TestFixture> {
+	private readonly TestFixture _fixture;
 
+	public UtilsTests(TestFixture fixture) {
+		_fixture = fixture;
+	}
 
 	[Fact]
 	public void WorldName_NoPlayer() {