undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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417
test/jdk/java/lang/StringBuffer/Supplementary.java
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417
test/jdk/java/lang/StringBuffer/Supplementary.java
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@ -0,0 +1,417 @@
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/*
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* Copyright (c) 2003, 2020, 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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*
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* @test
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* @bug 4533872 4915683 4985217 5017280 6937112
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* @summary Unit tests for supplementary character support (JSR-204)
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*/
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import java.util.HexFormat;
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public class Supplementary {
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public static void main(String[] args) {
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test1(); // Test for codePointAt(int index)
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test2(); // Test for codePointBefore(int index)
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test3(); // Test for reverse()
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test4(); // Test for appendCodePoint(int codePoint)
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test5(); // Test for codePointCount(int beginIndex, int endIndex)
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test6(); // Test for offsetByCodePoints(int index, int offset)
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}
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/* Text strings which are used as input data.
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* The comment above each text string means the index of each 16-bit char
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* for convenience.
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*/
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static final String[] input = {
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/* 111 1 111111 22222
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0123 4 5678 9 012 3 456789 01234 */
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"abc\uD800\uDC00def\uD800\uD800ab\uD800\uDC00cdefa\uDC00bcdef",
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/* 1 1111 1111 1 222
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0 12345 6789 0 1234 5678 9 012 */
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"\uD800defg\uD800hij\uD800\uDC00klm\uDC00nop\uDC00\uD800rt\uDC00",
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/* 11 1 1111 1 112 222
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0 12345 6 78901 2 3456 7 890 123 */
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"\uDC00abcd\uDBFF\uDFFFefgh\uD800\uDC009ik\uDC00\uDC00lm\uDC00no\uD800",
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/* 111 111111 1 22 2
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0 1 2345 678 9 012 345678 9 01 2 */
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"\uD800\uDC00!#$\uD800%&\uD800\uDC00;+\uDC00<>;=^\uDC00\\@\uD800\uDC00",
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// includes an undefined supplementary character in Unicode 4.0.0
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/* 1 11 1 1111 1
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0 1 2345 6 789 0 12 3 4567 8 */
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"\uDB40\uDE00abc\uDE01\uDB40de\uDB40\uDE02f\uDB40\uDE03ghi\uDB40\uDE02",
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};
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/* Expected results for:
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* test1(): for codePointAt()
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*
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* Each character in each array is the golden data for each text string
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* in the above input data. For example, the first data in each array is
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* for the first input string.
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*/
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static final int[][] golden1 = {
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{'a', 0xD800, 0xDC00, 0x10000, 0xE0200}, // codePointAt(0)
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{0xD800, 0x10000, 'g', 0xDC00, 0xE0202}, // codePointAt(9)
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{'f', 0xDC00, 0xD800, 0xDC00, 0xDE02}, // codePointAt(length-1)
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};
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/*
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* Test for codePointAt(int index) method
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*/
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static void test1() {
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for (int i = 0; i < input.length; i++) {
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StringBuffer sb = new StringBuffer(input[i]);
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/*
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* Normal case
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*/
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testCodePoint(At, sb, 0, golden1[0][i]);
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testCodePoint(At, sb, 9, golden1[1][i]);
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testCodePoint(At, sb, sb.length()-1, golden1[2][i]);
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/*
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* Abnormal case - verify that an exception is thrown.
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*/
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testCodePoint(At, sb, -1);
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testCodePoint(At, sb, sb.length());
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}
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}
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/* Expected results for:
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* test2(): for codePointBefore()
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*
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* Each character in each array is the golden data for each text string
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* in the above input data. For example, the first data in each array is
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* for the first input string.
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*/
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static final int[][] golden2 = {
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{'a', 0xD800, 0xDC00, 0xD800, 0xDB40}, // codePointBefore(1)
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{0xD800, 'l', 0x10000, 0xDC00, 0xDB40}, // codePointBefore(13)
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{'f', 0xDC00, 0xD800, 0x10000, 0xE0202}, // codePointBefore(length)
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};
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/*
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* Test for codePointBefore(int index) method
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*/
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static void test2() {
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for (int i = 0; i < input.length; i++) {
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StringBuffer sb = new StringBuffer(input[i]);
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/*
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* Normal case
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*/
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testCodePoint(Before, sb, 1, golden2[0][i]);
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testCodePoint(Before, sb, 13, golden2[1][i]);
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testCodePoint(Before, sb, sb.length(), golden2[2][i]);
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/*
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* Abnormal case - verify that an exception is thrown.
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*/
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testCodePoint(Before, sb, 0);
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testCodePoint(Before, sb, sb.length()+1);
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}
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}
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/* Expected results for:
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* test3(): for reverse()
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*
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* Unlike golden1 and golden2, each array is the golden data for each text
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* string in the above input data. For example, the first array is for
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* the first input string.
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*/
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static final String[] golden3 = {
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"fedcb\uDC00afedc\uD800\uDC00ba\uD800\uD800fed\uD800\uDC00cba",
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"\uDC00tr\uD800\uDC00pon\uDC00mlk\uD800\uDC00jih\uD800gfed\uD800",
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"\uD800on\uDC00ml\uDC00\uDC00ki9\uD800\uDC00hgfe\uDBFF\uDFFFdcba\uDC00",
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"\uD800\uDC00@\\\uDC00^=;><\uDC00+;\uD800\uDC00&%\uD800$#!\uD800\uDC00",
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// includes an undefined supplementary character in Unicode 4.0.0
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"\uDB40\uDE02ihg\uDB40\uDE03f\uDB40\uDE02ed\uDB40\uDE01cba\uDB40\uDE00",
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};
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// Additional input data & expected result for test3()
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static final String[][] testdata1 = {
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{"a\uD800\uDC00", "\uD800\uDC00a"},
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{"a\uDC00\uD800", "\uD800\uDC00a"},
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{"\uD800\uDC00a", "a\uD800\uDC00"},
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{"\uDC00\uD800a", "a\uD800\uDC00"},
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{"\uDC00\uD800\uD801", "\uD801\uD800\uDC00"},
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{"\uDC00\uD800\uDC01", "\uD800\uDC01\uDC00"},
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{"\uD801\uD800\uDC00", "\uD800\uDC00\uD801"},
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{"\uD800\uDC01\uDC00", "\uDC00\uD800\uDC01"},
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{"\uD800\uDC00\uDC01\uD801", "\uD801\uDC01\uD800\uDC00"},
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};
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/*
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* Test for reverse() method
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*/
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static void test3() {
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for (int i = 0; i < input.length; i++) {
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StringBuffer sb = new StringBuffer(input[i]).reverse();
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check(!golden3[i].equals(new String(sb)),
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"reverse() for <" + toHexString(input[i]) + ">",
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sb, golden3[i]);
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}
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for (int i = 0; i < testdata1.length; i++) {
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StringBuffer sb = new StringBuffer(testdata1[i][0]).reverse();
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check(!testdata1[i][1].equals(new String(sb)),
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"reverse() for <" + toHexString(testdata1[i][0]) + ">",
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sb, testdata1[i][1]);
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}
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}
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/**
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* Test for appendCodePoint() method
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*/
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static void test4() {
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for (int i = 0; i < input.length; i++) {
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String s = input[i];
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StringBuffer sb = new StringBuffer();
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int c;
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for (int j = 0; j < s.length(); j += Character.charCount(c)) {
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c = s.codePointAt(j);
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StringBuffer rsb = sb.appendCodePoint(c);
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check(sb != rsb, "appendCodePoint returned a wrong object");
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int sbc = sb.codePointAt(j);
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check(sbc != c, "appendCodePoint(j) != c", sbc, c);
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}
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check(!s.equals(sb.toString()),
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"appendCodePoint() produced a wrong result with input["+i+"]");
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}
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// test exception
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testAppendCodePoint(-1, IllegalArgumentException.class);
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testAppendCodePoint(Character.MAX_CODE_POINT+1, IllegalArgumentException.class);
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}
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/**
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* Test codePointCount(int, int)
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*
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* This test case assumes that
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* Character.codePointCount(CharSequence, int, int) works
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* correctly.
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*/
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static void test5() {
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for (int i = 0; i < input.length; i++) {
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String s = input[i];
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StringBuffer sb = new StringBuffer(s);
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int length = sb.length();
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for (int j = 0; j <= length; j++) {
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int result = sb.codePointCount(j, length);
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int expected = Character.codePointCount(sb, j, length);
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check(result != expected, "codePointCount(input["+i+"], "+j+", "+length+")",
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result, expected);
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}
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for (int j = length; j >= 0; j--) {
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int result = sb.codePointCount(0, j);
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int expected = Character.codePointCount(sb, 0, j);
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check(result != expected, "codePointCount(input["+i+"], 0, "+j+")",
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result, expected);
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}
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// test exceptions
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testCodePointCount(null, 0, 0, NullPointerException.class);
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testCodePointCount(sb, -1, length, IndexOutOfBoundsException.class);
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testCodePointCount(sb, 0, length+1, IndexOutOfBoundsException.class);
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testCodePointCount(sb, length, length-1, IndexOutOfBoundsException.class);
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}
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}
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/**
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* Test offsetByCodePoints(int, int)
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*
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* This test case assumes that
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* Character.codePointCount(CharSequence, int, int) works
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* correctly.
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*/
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static void test6() {
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for (int i = 0; i < input.length; i++) {
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String s = input[i];
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StringBuffer sb = new StringBuffer(s);
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int length = s.length();
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for (int j = 0; j <= length; j++) {
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int nCodePoints = Character.codePointCount(sb, j, length);
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int result = sb.offsetByCodePoints(j, nCodePoints);
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check(result != length,
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"offsetByCodePoints(input["+i+"], "+j+", "+nCodePoints+")",
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result, length);
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result = sb.offsetByCodePoints(length, -nCodePoints);
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int expected = j;
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if (j > 0 && j < length) {
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int cp = sb.codePointBefore(j+1);
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if (Character.isSupplementaryCodePoint(cp)) {
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expected--;
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}
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}
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check(result != expected,
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"offsetByCodePoints(input["+i+"], "+j+", "+(-nCodePoints)+")",
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result, expected);
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}
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for (int j = length; j >= 0; j--) {
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int nCodePoints = Character.codePointCount(sb, 0, j);
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int result = sb.offsetByCodePoints(0, nCodePoints);
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int expected = j;
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if (j > 0 && j < length) {
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int cp = sb.codePointAt(j-1);
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if (Character.isSupplementaryCodePoint(cp)) {
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expected++;
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}
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}
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check(result != expected,
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"offsetByCodePoints(input["+i+"], 0, "+nCodePoints+")",
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result, expected);
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result = sb.offsetByCodePoints(j, -nCodePoints);
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check(result != 0,
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"offsetBycodePoints(input["+i+"], "+j+", "+(-nCodePoints)+")",
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result, 0);
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}
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// test exceptions
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testOffsetByCodePoints(null, 0, 0, NullPointerException.class);
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testOffsetByCodePoints(sb, -1, length, IndexOutOfBoundsException.class);
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testOffsetByCodePoints(sb, 0, length+1, IndexOutOfBoundsException.class);
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testOffsetByCodePoints(sb, 1, -2, IndexOutOfBoundsException.class);
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testOffsetByCodePoints(sb, length, length-1, IndexOutOfBoundsException.class);
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testOffsetByCodePoints(sb, length, -(length+1), IndexOutOfBoundsException.class);
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}
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}
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static final boolean At = true, Before = false;
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static void testCodePoint(boolean isAt, StringBuffer sb, int index, int expected) {
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int c = isAt ? sb.codePointAt(index) : sb.codePointBefore(index);
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check(c != expected,
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"codePoint" + (isAt ? "At" : "Before") + "(" + index + ") for <"
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+ sb + ">", c, expected);
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}
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static void testCodePoint(boolean isAt, StringBuffer sb, int index) {
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boolean exceptionOccurred = false;
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try {
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int c = isAt ? sb.codePointAt(index) : sb.codePointBefore(index);
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}
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catch (StringIndexOutOfBoundsException e) {
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exceptionOccurred = true;
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}
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check(!exceptionOccurred,
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"codePoint" + (isAt ? "At" : "Before") + "(" + index + ") for <"
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+ sb + "> should throw StringIndexOutOfBoundsPointerException.");
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}
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static void testAppendCodePoint(int codePoint, Class expectedException) {
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try {
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new StringBuffer().appendCodePoint(codePoint);
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} catch (Exception e) {
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if (expectedException.isInstance(e)) {
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return;
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}
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throw new RuntimeException("Error: Unexpected exception", e);
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}
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check(true, "appendCodePoint(" + toHexString(codePoint) + ") didn't throw "
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+ expectedException.getName());
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}
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static void testCodePointCount(StringBuffer sb, int beginIndex, int endIndex,
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Class expectedException) {
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try {
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int n = sb.codePointCount(beginIndex, endIndex);
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} catch (Exception e) {
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if (expectedException.isInstance(e)) {
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return;
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}
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throw new RuntimeException("Error: Unexpected exception", e);
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}
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check(true, "codePointCount() didn't throw " + expectedException.getName());
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}
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static void testOffsetByCodePoints(StringBuffer sb, int index, int offset,
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Class expectedException) {
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try {
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int n = sb.offsetByCodePoints(index, offset);
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} catch (Exception e) {
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if (expectedException.isInstance(e)) {
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return;
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}
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throw new RuntimeException("Error: Unexpected exception", e);
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}
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check(true, "offsetByCodePoints() didn't throw " + expectedException.getName());
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}
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static void check(boolean err, String msg) {
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if (err) {
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throw new RuntimeException("Error: " + msg);
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}
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}
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static void check(boolean err, String s, int got, int expected) {
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if (err) {
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throw new RuntimeException("Error: " + s
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+ " returned an unexpected value. got "
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+ toHexString(got)
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+ ", expected "
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+ toHexString(expected));
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}
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}
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static void check(boolean err, String s, StringBuffer got, String expected) {
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if (err) {
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throw new RuntimeException("Error: " + s
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+ " returned an unexpected value. got <"
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+ toHexString(new String(got))
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+ ">, expected <"
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+ toHexString(expected)
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+ ">");
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}
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}
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private static String toHexString(int c) {
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return "0x" + Integer.toHexString(c);
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}
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private static String toHexString(String s) {
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HexFormat format = HexFormat.of();
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StringBuilder sb = new StringBuilder();
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for (int i = 0; i < s.length(); i++) {
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char c = s.charAt(i);
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sb.append(" 0x");
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sb.append(format.toHexDigits(c));
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}
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sb.append(' ');
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return sb.toString();
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}
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}
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