--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/String/nativeEncoding/StringPlatformChars.java Mon Jun 19 09:29:11 2017 +0200
@@ -0,0 +1,91 @@
+/*
+ * Copyright (c) 2017, 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
+ * @run main/othervm/native -Xcheck:jni StringPlatformChars
+ */
+import java.util.Arrays;
+
+public class StringPlatformChars {
+
+ private static final String JNU_ENCODING = System.getProperty("sun.jnu.encoding");
+
+ public static void main(String... args) throws Exception {
+ System.out.println("sun.jnu.encoding: " + JNU_ENCODING);
+ System.loadLibrary("stringPlatformChars");
+
+ // Test varying lengths, provoking different allocation paths
+ StringBuilder unicodeSb = new StringBuilder();
+ StringBuilder asciiSb = new StringBuilder();
+ StringBuilder latinSb = new StringBuilder();
+
+ for (int i = 0; i < 2000; i++) {
+ unicodeSb.append('\uFEFE');
+ testString(unicodeSb.toString());
+
+ asciiSb.append('x');
+ testString(asciiSb.toString());
+
+ latinSb.append('\u00FE');
+ testString(latinSb.toString());
+
+ testString(latinSb.toString() + asciiSb.toString() + unicodeSb.toString());
+ }
+
+ // Exhaustively test simple Strings made up of all possible chars:
+ for (char c = '\u0001'; c < Character.MAX_VALUE; c++) {
+ testString(String.valueOf(c));
+ }
+ // Special case: \u0000 is treated as end-of-string in the native code,
+ // so strings with it should be truncated:
+ if (getBytes("\u0000abcdef").length != 0 ||
+ getBytes("a\u0000bcdef").length != 1) {
+ System.out.println("Mismatching values for strings including \\u0000");
+ throw new AssertionError();
+ }
+ }
+
+ private static void testString(String s) throws Exception {
+ byte[] nativeBytes = getBytes(s);
+ byte[] stringBytes = s.getBytes(JNU_ENCODING);
+
+ if (!Arrays.equals(nativeBytes, stringBytes)) {
+ System.out.println("Mismatching values for: '" + s + "' " + Arrays.toString(s.chars().toArray()));
+ System.out.println("Native: " + Arrays.toString(nativeBytes));
+ System.out.println("String: " + Arrays.toString(stringBytes));
+ throw new AssertionError(s);
+ }
+
+ String javaNewS = new String(nativeBytes, JNU_ENCODING);
+ String nativeNewS = newString(nativeBytes);
+ if (!javaNewS.equals(nativeNewS)) {
+ System.out.println("New string via native doesn't match via java: '" + javaNewS + "' and '" + nativeNewS + "'");
+ throw new AssertionError(s);
+ }
+ }
+
+ static native byte[] getBytes(String string);
+
+ static native String newString(byte[] bytes);
+}