1 /*
   2  * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @summary Test Type Inference
  27  * @library /tools/lib
  28  * @build KullaTesting TestingInputStream ToolBox Compiler
  29  * @run testng InferTypeTest
  30  */
  31 
  32 import org.testng.annotations.Test;
  33 
  34 @Test
  35 public class InferTypeTest extends KullaTesting {
  36 
  37     public void testTypeInference() {
  38         assertInferredType("1", "int");
  39         assertEval("import java.util.*;");
  40         assertInferredType("new ArrayList<String>()", "ArrayList<String>");
  41         assertInferredType("null", "Object");
  42         assertInferredType("1 + ", null); //incomplete
  43         assertInferredType("undef", null);  //unresolvable
  44         assertEval("List<String> l1;");
  45         assertEval("List<? extends String> l2;");
  46         assertEval("List<? super String> l3;");
  47         assertInferredType("l1", "List<String>");
  48         assertInferredType("l2", "List<? extends String>");
  49         assertInferredType("l3", "List<? super String>");
  50         assertInferredType("l1.get(0)", "String");
  51         assertInferredType("l2.get(0)", "String");
  52         assertInferredType("l3.get(0)", "Object");
  53     }
  54 
  55 }