diff --git a/Source/Silverfly.Testing/SnapshotParserTestBase.cs b/Source/Silverfly.Testing/SnapshotParserTestBase.cs
index 5ac4c72..a3a9f94 100644
--- a/Source/Silverfly.Testing/SnapshotParserTestBase.cs
+++ b/Source/Silverfly.Testing/SnapshotParserTestBase.cs
@@ -33,7 +33,11 @@ public static Task Test(string source)
             useStatementsAtToplevel: _options.UseStatementsAtToplevel,
             filename: _options.Filename);
 
-        var result = new TestResult(parsed.Tree.Accept(new PrintVisitor()), parsed.Document);
+        object result = parsed.Tree;
+        if (_options.OutputMode == OutputMode.Small)
+        {
+            result = new TestResult(parsed.Tree.Accept(new PrintVisitor()), parsed.Document);
+        }
 
         return Verify(result, _settings);
     }
diff --git a/Source/Silverfly.Testing/TestOptions.cs b/Source/Silverfly.Testing/TestOptions.cs
index 2241f34..cb640c9 100644
--- a/Source/Silverfly.Testing/TestOptions.cs
+++ b/Source/Silverfly.Testing/TestOptions.cs
@@ -1,5 +1,11 @@
 namespace Silverfly.Testing;
 
-public record TestOptions(bool UseStatementsAtToplevel, string Filename = "syntetic.dsl")
+public enum OutputMode
+{
+    Small,
+    Full
+}
+
+public record TestOptions(bool UseStatementsAtToplevel, string Filename = "test.src", OutputMode OutputMode = OutputMode.Small)
 {
 }
diff --git a/Source/Silverfly.Testing/TestResult.cs b/Source/Silverfly.Testing/TestResult.cs
index 211b2ea..2f4e0c9 100644
--- a/Source/Silverfly.Testing/TestResult.cs
+++ b/Source/Silverfly.Testing/TestResult.cs
@@ -2,6 +2,6 @@
 
 namespace Silverfly.Testing;
 
-public record TestResult(string ParsedTree, SourceDocument Document)
+public record TestResult(object ParsedTree, SourceDocument Document)
 {
 }
diff --git a/Source/Silverfly/Parselets/BlockParselet.cs b/Source/Silverfly/Parselets/BlockParselet.cs
index 577df54..2c308b3 100644
--- a/Source/Silverfly/Parselets/BlockParselet.cs
+++ b/Source/Silverfly/Parselets/BlockParselet.cs
@@ -17,7 +17,11 @@ public AstNode Parse(Parser parser, Token token)
         while (!parser.Match(Terminator))
         {
             var node = parser.ParseStatement(wrapExpressions);
-            children.Add(node with { Parent = block });
+
+            if (node is not InvalidNode)
+            {
+                children.Add(node with { Parent = block });
+            }
 
             if (Seperator != null && parser.IsMatch(Seperator))
             {
diff --git a/Source/Silverfly/Parser.Helpers.cs b/Source/Silverfly/Parser.Helpers.cs
index 04b0f9f..34f7599 100644
--- a/Source/Silverfly/Parser.Helpers.cs
+++ b/Source/Silverfly/Parser.Helpers.cs
@@ -67,12 +67,17 @@ public ImmutableList<AstNode> ParseSeperated(Symbol seperator, Symbol terminator
 
         do
         {
-            args.Add(Parse(bindingPower));
+            var node = Parse(bindingPower);
+
+            if (node is not InvalidNode)
+            {
+                args.Add(node);
+            }
         } while (Match(seperator));
 
         Consume(terminator);
 
-        return args.ToImmutableList();
+        return [.. args];
     }
 
     public ImmutableList<AstNode> ParseList(Symbol terminator, int bindingPower = 0)
@@ -81,12 +86,17 @@ public ImmutableList<AstNode> ParseList(Symbol terminator, int bindingPower = 0)
 
         while (!IsMatch(terminator))
         {
-            args.Add(Parse(bindingPower));
+            var node = Parse(bindingPower);
+
+            if (node is not InvalidNode)
+            {
+                args.Add(node);
+            }
         }
 
         Consume(terminator);
 
-        return args.ToImmutableList();
+        return [.. args];
     }
 
     public ImmutableList<AstNode> ParseSeperated(Symbol seperator, int bindingPower = 0, params Symbol[] terminators)
@@ -100,11 +110,16 @@ public ImmutableList<AstNode> ParseSeperated(Symbol seperator, int bindingPower
 
         do
         {
-            args.Add(Parse(bindingPower));
+            var node = Parse(bindingPower);
+
+            if (node is not InvalidNode)
+            {
+                args.Add(node);
+            }
         } while (Match(seperator));
 
         Match(terminators);
 
-        return args.ToImmutableList();
+        return [.. args];
     }
 }
diff --git a/Source/TestProject/TestResults/Tests.FunctionCall_Complex_Should_Pass.received.txt b/Source/TestProject/TestResults/Tests.FunctionCall_Complex_Should_Pass.received.txt
deleted file mode 100644
index 7e0a8cb..0000000
--- a/Source/TestProject/TestResults/Tests.FunctionCall_Complex_Should_Pass.received.txt
+++ /dev/null
@@ -1,9 +0,0 @@
-{
-  $type: TestResult,
-  Tree: ((a) (b ? c : d), (e + f)); ,
-  Document: {
-    Filename: syntethic.dsl,
-    Source: a(b ? c : d, e + f),
-    Messages: []
-  }
-}
\ No newline at end of file
diff --git a/Source/TestProject/TestResults/Tests.FunctionCall_Complex_Should_Pass.verified.txt b/Source/TestProject/TestResults/Tests.FunctionCall_Complex_Should_Pass.verified.txt
index fda2de4..7e0a8cb 100644
--- a/Source/TestProject/TestResults/Tests.FunctionCall_Complex_Should_Pass.verified.txt
+++ b/Source/TestProject/TestResults/Tests.FunctionCall_Complex_Should_Pass.verified.txt
@@ -1,69 +1,6 @@
 {
-  $type: TranslationUnit,
-  Tree: {
-    $type: BlockNode,
-    SeperatorSymbol: ;,
-    Terminator: #eof,
-    Children: {
-      $type: ImmutableList<AstNode>,
-      $values: [
-        {
-          $type: CallNode,
-          FunctionExpr: {
-            $type: NameNode,
-            Name: a,
-            Range: 1:1-1:1
-          },
-          Arguments: {
-            $type: ImmutableList<AstNode>,
-            $values: [
-              {
-                $type: TernaryOperatorNode,
-                FirstExpr: {
-                  $type: NameNode,
-                  Name: b,
-                  Range: 1:3-1:3
-                },
-                SecondExpr: {
-                  $type: NameNode,
-                  Name: c,
-                  Range: 1:7-1:7
-                },
-                ThirdExpr: {
-                  $type: NameNode,
-                  Name: d,
-                  Range: 1:11-1:11
-                },
-                Range: 1:3-1:5
-              },
-              {
-                $type: BinaryOperatorNode,
-                LeftExpr: {
-                  $type: NameNode,
-                  Name: e,
-                  Range: 1:14-1:14
-                },
-                Operator: +,
-                RightExpr: {
-                  $type: NameNode,
-                  Name: f,
-                  Range: 1:18-1:18
-                },
-                Range: 1:14-1:18
-              }
-            ]
-          },
-          Range: 1:1-1:2,
-          Parent: {
-            $type: BlockNode,
-            SeperatorSymbol: ;,
-            Terminator: #eof
-          }
-        }
-      ]
-    },
-    Range: 1:1-1:23
-  },
+  $type: TestResult,
+  Tree: ((a) (b ? c : d), (e + f)); ,
   Document: {
     Filename: syntethic.dsl,
     Source: a(b ? c : d, e + f),