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 }