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/*
* Copyright (c) 2017, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/**
* @test
* @bug 8174694 8181033
* @summary improve error message shown when main class can't be loaded
* @compile MainClassCantBeLoadedTest.java
* @run main MainClassCantBeLoadedTest
*/
import java.io.*;
import java.util.*;
public class MainClassCantBeLoadedTest extends TestHelper {
private MainClassCantBeLoadedTest(){}
@Test
void testLoadingClassWithMissingSuper() throws Exception {
if (!isEnglishLocale()) {
return;
}
File cwd = new File(".");
File srcDir = new File(cwd, "src");
if (srcDir.exists()) {
recursiveDelete(srcDir);
}
srcDir.mkdirs();
/* we want to generate two classes A and B, where B is the superclass of A
* class A has a main method
*/
ArrayList<String> scratchpad = new ArrayList<>();
scratchpad.add("public class A extends B {");
scratchpad.add(" public static void main(String... args) {}");
scratchpad.add("}");
createFile(new File(srcDir, "A.java"), scratchpad);
scratchpad.clear();
scratchpad.add("class B {}");
createFile(new File(srcDir, "B.java"), scratchpad);
// let's compile both
TestResult trCompilation = doExec(javacCmd,
"-d", "out",
new File(srcDir, "A.java").toString(),
new File(srcDir, "B.java").toString());
if (!trCompilation.isOK()) {
System.err.println(trCompilation);
throw new RuntimeException("Error: compiling");
}
// and now B is removed
File outDir = new File(cwd, "out");
File bClass = new File(outDir, "B.class");
bClass.delete();
// if A is executed
TestResult trExecution = doExec(javaCmd, "-cp", "out", "A");
// then this error message should be generated
trExecution.contains("Error: Could not find or load main class A");
trExecution.contains("Caused by: java.lang.NoClassDefFoundError: B");
if (!trExecution.testStatus)
System.err.println(trExecution);
}
public static void main(String[] args) throws Exception {
MainClassCantBeLoadedTest a = new MainClassCantBeLoadedTest();
a.run(args);
if (testExitValue > 0) {
System.out.println("Total of " + testExitValue + " failed");
throw new RuntimeException("Test failed");
} else {
System.out.println("Test passed");
}
}
}
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