Issue 11892. It is compile-time error when unqualified invocation with unresolved identifier.

editor/tools/plugins/com.google.dart.engine_test/src/com/google/dart/engine/resolver/StaticTypeWarningCodeTest.java

 /*
  * Copyright (c) 2013, the Dart project authors.
  * 
  * Licensed under the Eclipse Public License v1.0 (the "License"); you may not use this file except
  * in compliance with the License. You may obtain a copy of the License at
  * 
  * http://www.eclipse.org/legal/epl-v10.html
  * 
  * Unless required by applicable law or agreed to in writing, software distributed under the License
  * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
@@ skipping 654 matching lines @@
     Source source = addSource(createSource(//
         "class A {}",
         "class B {}",
         "class G<E extends A> {}",
         "class C extends Object with G<B>{}"));
     resolve(source);
     assertErrors(StaticTypeWarningCode.TYPE_ARGUMENT_NOT_MATCHING_BOUNDS);
     verify(source);
   }
 
-  public void test_undefinedFunction() throws Exception {
-    Source source = addSource(createSource(//
-        "void f() {",
-        "  g();",
-        "}"));
-    resolve(source);
-    assertErrors(StaticTypeWarningCode.UNDEFINED_FUNCTION);
-  }
-
   public void test_undefinedGetter() throws Exception {
     Source source = addSource(createSource(//
         "class T {}",
         "f(T e) { return e.m; }"));
     resolve(source);
     assertErrors(StaticTypeWarningCode.UNDEFINED_GETTER);
     // A call to verify(source) fails as 'e.m' isn't resolved.
   }
 
   public void test_undefinedGetter_static() throws Exception {
@@ skipping 139 matching lines @@
         "class A {}",
         "class C<E> {}",
         "f(p) {",
         "  return p is C<A, A>;",
         "}"));
     resolve(source);
     assertErrors(StaticTypeWarningCode.WRONG_NUMBER_OF_TYPE_ARGUMENTS);
     verify(source);
   }
 }