diff --git a/src/main/test/net/minecraft/commands/tree/ArgumentCommandNodeTest.java b/src/main/test/net/minecraft/commands/tree/ArgumentCommandNodeTest.java
index 486da94..e7f448d 100644
--- a/src/main/test/net/minecraft/commands/tree/ArgumentCommandNodeTest.java
+++ b/src/main/test/net/minecraft/commands/tree/ArgumentCommandNodeTest.java
@@ -36,6 +36,13 @@ public class ArgumentCommandNodeTest {
         assertThat(node.parse("123 123"), is(child));
     }
 
+    @Test(expected = IllegalCommandArgumentException.class)
+    public void testParseInvalidChild() throws Exception {
+        node.addChild(argument("bar", integer()).build());
+
+        node.parse("123 bar");
+    }
+
     @Test(expected = IllegalCommandArgumentException.class)
     public void testParseNoChildren() throws Exception {
         node.parse("123 123");
diff --git a/src/main/test/net/minecraft/commands/tree/LiteralCommandNodeTest.java b/src/main/test/net/minecraft/commands/tree/LiteralCommandNodeTest.java
index d7557b0..72cf6ce 100644
--- a/src/main/test/net/minecraft/commands/tree/LiteralCommandNodeTest.java
+++ b/src/main/test/net/minecraft/commands/tree/LiteralCommandNodeTest.java
@@ -37,6 +37,13 @@ public class LiteralCommandNodeTest {
         assertThat(node.parse("foo 123"), is(child));
     }
 
+    @Test(expected = IllegalCommandArgumentException.class)
+    public void testParseInvalidChild() throws Exception {
+        node.addChild(argument("bar", integer()).build());
+
+        node.parse("foo bar");
+    }
+
     @Test(expected = IllegalCommandArgumentException.class)
     public void testParseNoChildren() throws Exception {
         node.parse("foo 123");