[material graph] add tests for node configuration.

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Editor/Testing/UnitTests/SerializedGraphTests.cs

         }
 
         [Test]
+        public void TestExceptionIfBadNodeConfigurationWorks()
+        {
+            var node = new TestableNode();
+            Assert.DoesNotThrow(
+                                () =>
+                                    NodeUtils.SlotConfigurationExceptionIfBadConfiguration(
+                                                                                           node,
+                                        new[] {TestableNode.Input0, TestableNode.Input1, TestableNode.Input2},
+                                        new[] {TestableNode.Output0, TestableNode.Output1, TestableNode.Output2,})
+                );
+
+
+            Assert.Throws<SlotConfigurationException>(
+                                                      () =>
+                                                          NodeUtils.SlotConfigurationExceptionIfBadConfiguration(
+                                                                                                                 node,
+                                                              new[] {666, TestableNode.Input1, TestableNode.Input2},
+                                                              new[] {TestableNode.Output0, TestableNode.Output1, TestableNode.Output2,})
+                );
+
+            Assert.Throws<SlotConfigurationException>(
+                                                      () =>
+                                                          NodeUtils.SlotConfigurationExceptionIfBadConfiguration(
+                                                                                                                 node,
+                                                              new[] {TestableNode.Input0, TestableNode.Input1, TestableNode.Input2},
+                                                              new[] {666, TestableNode.Output1, TestableNode.Output2,})
+                );
+
+            Assert.DoesNotThrow(
+                                () =>
+                                    NodeUtils.SlotConfigurationExceptionIfBadConfiguration(
+                                                                                           node,
+                                        new[] {TestableNode.Input0},
+                                        new[] {TestableNode.Output0})
+                );
+        }
+
+        [Test]
         public void TestConectionToSameInputReplacesOldInput()
         {
             var graph = new SerializableGraph();

MaterialGraphProject/Assets/GraphFramework/SerializableGraph/Runtime/Implementation/NodeUtils.cs

 
 namespace UnityEngine.Graphing
 {
-    public static class NodeUtils
+    public class SlotConfigurationException : Exception
-        public class SlotConfigurationException : Exception
-        {
-            public SlotConfigurationException()
-            { }
+        public SlotConfigurationException()
+        { }
-            public SlotConfigurationException(string message)
-                : base(message)
-            {}
+        public SlotConfigurationException(string message)
+            : base(message)
+        { }
-            public SlotConfigurationException(string message, Exception inner)
-                : base(message, inner)
-            {}
-        }
+        public SlotConfigurationException(string message, Exception inner)
+            : base(message, inner)
+        { }
+    }
+    public static class NodeUtils
+    {
         public static void SlotConfigurationExceptionIfBadConfiguration(INode node, IEnumerable<int> expectedInputSlots, IEnumerable<int> expectedOutputSlots )
         {
             var missingSlots = new List<int>();