77 lines
3.0 KiB
Java
77 lines
3.0 KiB
Java
/*
|
|
* Copyright (c) 2015, 2022, 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.
|
|
*
|
|
*/
|
|
|
|
// A test class to be launched in AppCDS mode, has basic+
|
|
// coverage of string operations
|
|
|
|
import jdk.test.whitebox.WhiteBox;
|
|
|
|
public class HelloStringPlus {
|
|
public static void main(String args[]) {
|
|
// Let's reference the string that is in archive
|
|
String testString1 = "shared_test_string_unique_14325";
|
|
System.out.println("Hello String: " + testString1);
|
|
|
|
WhiteBox wb = WhiteBox.getWhiteBox();
|
|
if (wb.areSharedStringsMapped() && !wb.isSharedInternedString(testString1)) {
|
|
throw new RuntimeException("testString1 is not shared");
|
|
}
|
|
|
|
// Check other basic string operations
|
|
// Interning and equality
|
|
String[] testArray = new String[] {"shared_", "test_", "string_", "intern_", "12345"};
|
|
String toBeInterned = "";
|
|
|
|
StringBuilder sb = new StringBuilder();
|
|
for (String s : testArray) {
|
|
sb.append(s);
|
|
}
|
|
toBeInterned = sb.toString();
|
|
|
|
System.out.println("About to intern a string: " + toBeInterned);
|
|
toBeInterned.intern();
|
|
|
|
// check equality
|
|
if (testString1.equals(toBeInterned))
|
|
throw new RuntimeException("Equality test 1 failed");
|
|
|
|
if (!testString1.equals("shared_test_string" + '_' + "unique_14325"))
|
|
throw new RuntimeException("Equality test 2 failed");
|
|
|
|
// Chech the hash code functionality; no special assertions, just make sure
|
|
// no crashe or exception occurs
|
|
System.out.println("testString1.hashCode() = " + testString1.hashCode());
|
|
|
|
// Check intern() method for "" string
|
|
String empty = "";
|
|
String empty_interned = empty.intern();
|
|
if (wb.areSharedStringsMapped() && !wb.isSharedInternedString(empty)) {
|
|
throw new RuntimeException("Empty string should be shared");
|
|
}
|
|
if (empty_interned != empty) {
|
|
throw new RuntimeException("Different string is returned from intern() for empty string");
|
|
}
|
|
}
|
|
}
|