| /* |
| * Copyright (c) 1998, 2016, 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 4062985 4108758 4108762 4157299 |
| * @library /java/text/testlib |
| * @summary Test CollationElementIterator, particularly the new methods in 1.2 |
| */ |
| /* |
| * (C) Copyright IBM Corp. 1998 - All Rights Reserved |
| * |
| * The original version of this source code and documentation is copyrighted |
| * and owned by IBM, Inc. These materials are provided under terms of a |
| * License Agreement between IBM and Sun. This technology is protected by |
| * multiple US and International patents. This notice and attribution to IBM |
| * may not be removed. |
| */ |
| |
| import java.util.Locale; |
| import java.text.*; |
| |
| public class IteratorTest extends CollatorTest { |
| // TODO: |
| // - Test previous() with contracting character sequences, which don't work |
| // at the moment. |
| // - Test edge cases on setOffset(), e.g. offset > length, etc. |
| // |
| public static void main(String[] args) throws Exception { |
| new IteratorTest().run(args); |
| } |
| |
| /** |
| * Test for CollationElementIterator.previous() |
| * |
| * @bug 4108758 - Make sure it works with contracting characters |
| * |
| */ |
| public void TestPrevious() throws ParseException { |
| // A basic test to see if it's working at all |
| backAndForth(en_us.getCollationElementIterator(test1)); |
| |
| // Test with a contracting character sequence |
| RuleBasedCollator c1 = new RuleBasedCollator( |
| "< a,A < b,B < c,C, d,D < z,Z < ch,cH,Ch,CH" ); |
| |
| backAndForth(c1.getCollationElementIterator("abchdcba")); |
| |
| // Test with an expanding character sequence |
| RuleBasedCollator c2 = new RuleBasedCollator( |
| "< a < b < c/abd < d" ); |
| |
| backAndForth(c2.getCollationElementIterator("abcd")); |
| |
| // Now try both |
| RuleBasedCollator c3 = new RuleBasedCollator( |
| "< a < b < c/aba < d < z < ch" ); |
| |
| backAndForth(c3.getCollationElementIterator("abcdbchdc")); |
| } |
| |
| /** |
| * Test for getOffset() and setOffset() |
| */ |
| public void TestOffset() { |
| CollationElementIterator iter = en_us.getCollationElementIterator(test1); |
| |
| // Run all the way through the iterator, then get the offset |
| int orders[] = getOrders(iter); |
| |
| int offset = iter.getOffset(); |
| if (offset != test1.length()) { |
| System.out.println("offset at end != length: " |
| + offset + " vs " + test1.length()); |
| } |
| |
| // Now set the offset back to the beginning and see if it works |
| iter.setOffset(0); |
| assertEqual(iter, en_us.getCollationElementIterator(test1)); |
| |
| // TODO: try iterating halfway through a messy string. |
| } |
| |
| /** |
| * Test for setText() |
| */ |
| public void TestSetText() { |
| CollationElementIterator iter1 = en_us.getCollationElementIterator(test1); |
| CollationElementIterator iter2 = en_us.getCollationElementIterator(test2); |
| |
| // Run through the second iterator just to exercise it |
| int c = iter2.next(); |
| int i = 0; |
| while ( ++i < 10 && c != CollationElementIterator.NULLORDER) { |
| c = iter2.next(); |
| } |
| |
| // Now set it to point to the same string as the first iterator |
| iter2.setText(test1); |
| assertEqual(iter1, iter2); |
| } |
| |
| /** @bug 4108762 |
| * Test for getMaxExpansion() |
| */ |
| public void TestMaxExpansion() throws ParseException { |
| // Try a simple one first: |
| // The only expansion ends with 'e' and has length 2 |
| String[][] test1 = { |
| { "< a & ae = \u00e4 < b < e", "" }, |
| { "a", "1" }, |
| { "b", "1" }, |
| { "e", "2" }, |
| }; |
| verifyExpansion(test1); |
| |
| // Now a more complicated one: |
| // "a1" --> "ae" |
| // "z" --> "aeef" |
| // |
| String[][] test2 = { |
| { "< a & ae = a1 & aeef = z < b < e < f", "" }, |
| { "a", "1" }, |
| { "b", "1" }, |
| { "e", "2" }, |
| { "f", "4" }, |
| }; |
| verifyExpansion(test2); |
| } |
| |
| /* |
| * @bug 4157299 |
| */ |
| public void TestClearBuffers() throws ParseException { |
| RuleBasedCollator c = new RuleBasedCollator("< a < b < c & ab = d"); |
| CollationElementIterator i = c.getCollationElementIterator("abcd"); |
| int e0 = i.next(); // save the first collation element |
| i.setOffset(3); // go to the expanding character |
| i.next(); // but only use up half of it |
| i.setOffset(0); // go back to the beginning |
| int e = i.next(); // and get this one again |
| if (e != e0) { |
| errln("got " + Integer.toString(e, 16) + ", expected " + |
| Integer.toString(e0, 16)); |
| } |
| } |
| |
| //------------------------------------------------------------------------ |
| // Internal utilities |
| // |
| |
| private void backAndForth(CollationElementIterator iter) { |
| // Run through the iterator forwards and stick it into an array |
| int [] orders = getOrders(iter); |
| |
| // Now go through it backwards and make sure we get the same values |
| int index = orders.length; |
| int o; |
| |
| while ((o = iter.previous()) != CollationElementIterator.NULLORDER) { |
| if (o != orders[--index]) { |
| errln("Mismatch at index " + index + ": " |
| + orders[index] + " vs " + o); |
| break; |
| } |
| } |
| if (index != 0) { |
| errln("Didn't get back to beginning - index is " + index); |
| |
| iter.reset(); |
| err("next: "); |
| while ((o = iter.next()) != NULLORDER) { |
| err( Integer.toHexString(o) + " "); |
| } |
| errln(""); |
| |
| err("prev: "); |
| while ((o = iter.previous()) != NULLORDER) { |
| err( Integer.toHexString(o) + " "); |
| } |
| errln(""); |
| } |
| } |
| |
| /** |
| * Verify that getMaxExpansion works on a given set of collation rules |
| * |
| * The first row of the "tests" array contains the collation rules |
| * at index 0, and the string at index 1 is ignored. |
| * |
| * Subsequent rows of the array contain a character and a number, both |
| * represented as strings. The character's collation order is determined, |
| * and getMaxExpansion is called for that character. If its value is |
| * not equal to the specified number, an error results. |
| */ |
| private void verifyExpansion(String[][] tests) throws ParseException |
| { |
| RuleBasedCollator coll = new RuleBasedCollator(tests[0][0]); |
| CollationElementIterator iter = coll.getCollationElementIterator(""); |
| |
| for (int i = 1; i < tests.length; i++) { |
| // First get the collation key that the test string expands to |
| iter.setText(tests[i][0]); |
| |
| int order = iter.next(); |
| |
| if (order == NULLORDER || iter.next() != NULLORDER) { |
| iter.reset(); |
| errln("verifyExpansion: '" + tests[i][0] + |
| "' has multiple orders:" + orderString(iter)); |
| } |
| |
| int expansion = iter.getMaxExpansion(order); |
| int expect = new Integer(tests[i][1]).intValue(); |
| |
| if (expansion != expect) { |
| errln("expansion for '" + tests[i][0] + "' is wrong: " + |
| "expected " + expect + ", got " + expansion); |
| } |
| } |
| } |
| |
| /** |
| * Return an integer array containing all of the collation orders |
| * returned by calls to next on the specified iterator |
| */ |
| private int[] getOrders(CollationElementIterator iter) |
| { |
| int maxSize = 100; |
| int size = 0; |
| int[] orders = new int[maxSize]; |
| |
| int order; |
| while ((order = iter.next()) != NULLORDER) { |
| if (size == maxSize) { |
| maxSize *= 2; |
| int[] temp = new int[maxSize]; |
| System.arraycopy(orders, 0, temp, 0, size); |
| orders = temp; |
| } |
| orders[size++] = order; |
| } |
| |
| if (orders.length > size) { |
| int[] temp = new int[size]; |
| System.arraycopy(orders, 0, temp, 0, size); |
| orders = temp; |
| } |
| return orders; |
| }; |
| |
| /** |
| * Return a string containing all of the collation orders |
| * returned by calls to next on the specified iterator |
| */ |
| private String orderString(CollationElementIterator iter) { |
| StringBuffer buf = new StringBuffer(); |
| |
| int order; |
| while ((order = iter.next()) != NULLORDER) { |
| buf.append( Integer.toHexString(order) + " "); |
| } |
| return buf.toString(); |
| } |
| |
| static final private int NULLORDER = CollationElementIterator.NULLORDER; |
| RuleBasedCollator en_us = (RuleBasedCollator)Collator.getInstance(Locale.US); |
| |
| String test1 = "What subset of all possible test cases?"; |
| String test2 = "has the highest probability of detecting"; |
| } |