87 lines
3.3 KiB
Java
87 lines
3.3 KiB
Java
/*
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* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @summary Stack trace should have module information
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* @run testng ModuleFrames
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*/
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.util.Arrays;
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import org.testng.annotations.Test;
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import static org.testng.Assert.*;
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public class ModuleFrames {
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@Test
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public void testModuleName() {
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try {
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Integer.parseInt("a");
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} catch (NumberFormatException e) {
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StackTraceElement[] stack = e.getStackTrace();
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StackTraceElement topFrame = stack[0];
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StackTraceElement thisFrame = findFrame(this.getClass().getName(), stack);
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assertEquals(topFrame.getModuleName(), "java.base",
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"Expected top frame to be in module java.base");
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assertTrue(topFrame.toString().startsWith("java.base"),
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"Expected toString of top frame to omit loader name, start with module name: java.base");
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assertTrue(!topFrame.toString().contains("@"),
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"Expected toString of top frame not to include module version ('@')");
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Path home = Paths.get(System.getProperty("java.home"));
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boolean isImage = Files.exists(home.resolve("lib").resolve("modules"));
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if (isImage) {
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assertTrue(!topFrame.getModuleVersion().isEmpty(),
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"Expected non-empty STE.getModuleVersion() for top frame");
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}
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assertNull(thisFrame.getModuleName(),
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"Expected frame for test not to have a module name");
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assertTrue(thisFrame.toString().startsWith(this.getClass().getName()),
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"Expected toString to start with class name (no loader or module name");
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ClassLoader testCL = this.getClass().getClassLoader();
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if (ClassLoader.getSystemClassLoader().getClass().isInstance(testCL)) {
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assertEquals(thisFrame.getClassLoaderName(), "app",
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"Expect STE to have loader name of \"app\"");
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}
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}
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}
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private static StackTraceElement findFrame(String cn, StackTraceElement[] stack) {
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return Arrays.stream(stack)
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.filter(s -> s.getClassName().equals(cn))
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.findFirst()
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.get();
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}
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}
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