1 /* 2 * Copyright (c) 2015, 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 Stack trace should have module information 27 * @run testng ModuleFrames 28 */ 29 30 import java.util.Arrays; 31 32 import org.testng.annotations.Test; 33 import static org.testng.Assert.*; 34 35 public class ModuleFrames { 36 37 @Test 38 public void testModuleName() { 39 try { 40 Integer.parseInt("a"); 41 } catch (NumberFormatException e) { 42 43 StackTraceElement[] stack = e.getStackTrace(); 44 StackTraceElement topFrame = stack[0]; 45 StackTraceElement thisFrame = findFrame(this.getClass().getName(), stack); 46 47 assertEquals(topFrame.getModuleName(), "java.base", 48 "Expected top frame to be in module java.base"); 49 50 assertTrue(topFrame.toString().startsWith("java.base"), 51 "Expected toString of top frame to omit loader name, start with module name: java.base"); 52 53 assertTrue(!topFrame.toString().contains("@"), 54 "Expected toString of top frame not to include module version ('@')"); 55 56 assertTrue(!topFrame.getModuleVersion().isEmpty(), 57 "Expected non-empty STE.getModuleVersion() for top frame"); 58 59 assertNull(thisFrame.getModuleName(), 60 "Expected frame for test not to have a module name"); 61 62 assertTrue(thisFrame.toString().startsWith(this.getClass().getName()), 63 "Expected toString to start with class name (no loader or module name"); 64 65 assertEquals(thisFrame.getClassLoaderName(), "app", 66 "Expect STE to have loader name of \"app\""); 67 } 68 } 69 70 private static StackTraceElement findFrame(String cn, StackTraceElement[] stack) { 71 return Arrays.stream(stack) 72 .filter(s -> s.getClassName().equals(cn)) 73 .findFirst() 74 .get(); 75 } 76 }