Add more unit tests

Author: jhonabreul

src/embed_tests/TestMethodBinder.cs

@@ -967,6 +967,20 @@ public void PyObjectArgsHavePrecedenceOverOtherTypes()
                 pyInstance.InvokeMethod("Method", pyArg);
             });
 
+            // With the first named argument
+            Assert.DoesNotThrow(() =>
+            {
+                using var kwargs = Py.kw("decimalArgument", 1.234m);
+                pyInstance.InvokeMethod("Method", new[] { pyArg }, kwargs);
+            });
+
+            // Snake case version
+            Assert.DoesNotThrow(() =>
+            {
+                using var kwargs = Py.kw("decimal_argument", 1.234m);
+                pyInstance.InvokeMethod("method", new[] { pyArg }, kwargs);
+            });
+
             Assert.AreEqual("Overload 4", instance.CalledMethodMessage);
 
             Assert.IsFalse(Exceptions.ErrorOccurred());

src/runtime/MethodBinder.cs

@@ -362,7 +362,7 @@ private static int GetMatchedArgumentsPrecedence(MethodInformation method, int m
             var val = 0;
             for (var i = 0; i < pi.Length; i++)
             {
-                if (i < matchedPositionalArgsCount || matchedKwargsNames.Contains(pi[i].Name))
+                if (i < matchedPositionalArgsCount || matchedKwargsNames.Contains(method.ParameterNames[i]))
                 {
                     val += ArgPrecedence(pi[i].ParameterType, isOperatorMethod);
                 }
@@ -480,11 +480,6 @@ internal Binding Bind(BorrowedReference inst, BorrowedReference args, BorrowedRe
             var methods = info == null ? GetMethods()
                 : new List<MethodInformation>(1) { new MethodInformation(info, true) };
 
-            if (methods.Any(m => m.MethodBase.Name.StartsWith("History")))
-            {
-
-            }
-
             int pyArgCount = (int)Runtime.PyTuple_Size(args);
             var matches = new List<MatchedMethod>(methods.Count);
             List<MatchedMethod> matchesUsingImplicitConversion = null;