Fixed method selection by extern constraint specificity

IDEHelper/Tests/src/Generics2.bf

@@ -0,0 +1,50 @@
+using System;
+
+namespace Tests
+{
+	class Generics2
+	{
+		struct TestFunc<T, Del>
+		{
+			private int mId;
+			private Del mComparer;
+
+			public static TestFunc<T, Del> Create(int id, Del comparer)
+			{
+				return .()
+				{
+					mId = id,
+					mComparer = comparer
+				};
+			}
+
+			public bool CheckDlg(T item)
+			{
+				return false;
+			}
+
+			public bool CheckDlg(T item) where Del : delegate bool(T)
+			{
+				return mComparer(item);
+			}
+
+			public bool CheckDlg(T item) where Del : delegate bool(int, T)
+			{
+				return mComparer(mId, item);
+			}
+
+			public bool CallCheck(T val)
+			{
+				return CheckDlg(val);
+			}
+		}
+
+		[Test]
+		public static void TestBasics()
+		{
+			let testF = TestFunc<String, delegate bool(String)>.Create(10, scope (s) => s == "Str");
+			Test.Assert(testF.CallCheck("Str"));
+			Test.Assert(!testF.CallCheck("Str2"));
+		}
+	}
+}