Added a few tests, removed some error codes from Resolver

compiler/java/com/google/dart/compiler/resolver/ResolverErrorCode.java

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 package com.google.dart.compiler.resolver;
 
 import com.google.dart.compiler.ErrorCode;
 import com.google.dart.compiler.ErrorSeverity;
 import com.google.dart.compiler.SubSystem;
 
 /**
  * {@link ErrorCode}s for resolver.
  */
 public enum ResolverErrorCode implements ErrorCode {
   BLACK_LISTED_EXTENDS("'%s' can not be used as superclass"),
   BLACK_LISTED_IMPLEMENTS("'%s' can not be used as superinterface"),
   BREAK_LABEL_RESOLVES_TO_CASE_OR_DEFAULT("break label resolves to case or default statement"),
   BUILT_IN_IDENTIFIER_AS_IMPORT_PREFIX("Build-in identifier '%s' cannot be used as a import prefix"),
   BUILT_IN_IDENTIFIER_AS_TYPE("Build-in identifier '%s' cannot be used as a type annotation"),
-  // TODO(zundel): error message needs JUnit test
   CANNOT_ACCESS_FIELD_IN_INIT("Cannot access an instance field in an initializer expression"),
   CANNOT_ACCESS_METHOD(ErrorSeverity.WARNING, "Cannot access private method '%s'"),
   CANNOT_ACCESS_OUTER_LABEL("Cannot access label %s declared in an outer function"),
   CANNOT_ASSIGN_TO_FINAL("cannot assign value to final variable \"%s\"."),
   CANNOT_ASSIGN_TO_METHOD("cannot assign value to method '%s'."),
-  // TODO(zundel): error message needs JUnit test
   CANNOT_BE_RESOLVED("cannot resolve %s"),
-  // TODO(zundel): error message needs JUnit test
+  // TODO(zundel): error message needs JUnit test - how to test #imports in junit?
   CANNOT_BE_RESOLVED_LIBRARY("cannot resolve %s in library %s"),
-  // TODO(zundel): error message needs JUnit test
-  CANNOT_BE_INITIALIZED("cannot be initialized"),
-  // TODO(zundel): error message needs JUnit test
-  CANNOT_CALL_LABEL("Labels cannot be called"),
-  // TODO(zundel): error message needs JUnit test
   CANNOT_CALL_FUNCTION_TYPE_ALIAS("Function type aliases cannot be called"),
   // TODO(zundel): error message needs JUnit test
   CANNOT_CALL_LIBRARY_PREFIX("Library prefixes cannot be called"),
   CANNOT_DECLARE_NON_FACTORY_CONSTRUCTOR(
       "Cannot declare a non-factory named constructor of another class."),
   CANNOT_HIDE_IMPORT_PREFIX("Cannot hide import prefix '%s'"),
   CANNOT_INIT_STATIC_FIELD_IN_INITIALIZER("Cannot initialize a static field in an initializer list"),
   // TODO(zundel): error message needs JUnit test
   CANNOT_OVERRIDE_INSTANCE_MEMBER("static member cannot override instance member %s of %s"),
   CANNOT_OVERRIDE_METHOD_NUM_REQUIRED_PARAMS(
       "cannot override method %s, wrong number of required parameters"),
   CANNOT_OVERRIDE_METHOD_NAMED_PARAMS(
       "cannot override method %s, named parameters don't match"),
   // TODO(zundel): error message needs JUnit test
   CANNOT_RESOLVE_CONSTRUCTOR("cannot resolve constructor %s"),
   // TODO(zundel): error message needs JUnit test
   CANNOT_RESOLVE_FIELD("cannot resolve field %s"),
   CANNOT_RESOLVE_LABEL("cannot resolve label %s"),
   CANNOT_RESOLVE_METHOD("cannot resolve method '%s'"),
   CANNOT_RESOLVE_METHOD_IN_CLASS("cannot resolve method '%s' in class '%s'"),
   // TODO(zundel): error message needs JUnit test
   CANNOT_RESOLVE_METHOD_IN_LIBRARY("cannot resolve method '%s' in library '%s'"),
+  // TODO(zundel): To exercise this requires simulating a corrupted SDK?
+  CANNOT_RESOLVE_SDK_TYPE("cannot resolve SDK type %s"),
   // TODO(zundel): error message needs JUnit test
   CANNOT_RESOLVE_SUPER_CONSTRUCTOR("cannot resolve method '%s'"),
   CANNOT_RESOLVE_IMPLICIT_CALL_TO_SUPER_CONSTRUCTOR(
       "super type %s does not have a default constructor"),
   // TODO(zundel): error message needs JUnit test
   CANNOT_USE_TYPE("Cannot reference the type '%s' in this context"),
   // TODO(zundel): error message needs JUnit test
   CANNOT_USE_TYPE_VARIABLE("Cannot reference the type variable '%s' in this context"),
   CIRCULAR_REFERENCE(
       "Circular reference detected:  compile-time constants cannot reference themselves."),
@@ skipping 205 matching lines @@
   @Override
   public SubSystem getSubSystem() {
     return SubSystem.RESOLVER;
   }
 
   @Override
   public boolean needsRecompilation() {
     return true;
   }
 }