/* * Copyright (C) 2014 The Android Open Source Project * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.android.inputmethod.latin.common; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertFalse; import static org.junit.Assert.assertTrue; import androidx.test.filters.SmallTest; import androidx.test.runner.AndroidJUnit4; import org.junit.Test; import org.junit.runner.RunWith; import java.util.Locale; @SmallTest @RunWith(AndroidJUnit4.class) public class StringUtilsTests { private static final Locale US = Locale.US; private static final Locale GERMAN = Locale.GERMAN; private static final Locale TURKEY = new Locale("tr", "TR"); private static final Locale GREECE = new Locale("el", "GR"); private static void assert_toTitleCaseOfKeyLabel(final Locale locale, final String lowerCase, final String expected) { assertEquals(lowerCase + " in " + locale, expected, StringUtils.toTitleCaseOfKeyLabel(lowerCase, locale)); } @Test public void test_toTitleCaseOfKeyLabel() { assert_toTitleCaseOfKeyLabel(US, null, null); assert_toTitleCaseOfKeyLabel(US, "", ""); assert_toTitleCaseOfKeyLabel(US, "aeiou", "AEIOU"); // U+00E0: "à" LATIN SMALL LETTER A WITH GRAVE // U+00E8: "è" LATIN SMALL LETTER E WITH GRAVE // U+00EE: "î" LATIN SMALL LETTER I WITH CIRCUMFLEX // U+00F6: "ö" LATIN SMALL LETTER O WITH DIAERESIS // U+016B: "ū" LATIN SMALL LETTER U WITH MACRON // U+00F1: "ñ" LATIN SMALL LETTER N WITH TILDE // U+00E7: "ç" LATIN SMALL LETTER C WITH CEDILLA // U+00C0: "À" LATIN CAPITAL LETTER A WITH GRAVE // U+00C8: "È" LATIN CAPITAL LETTER E WITH GRAVE // U+00CE: "Î" LATIN CAPITAL LETTER I WITH CIRCUMFLEX // U+00D6: "Ö" LATIN CAPITAL LETTER O WITH DIAERESIS // U+016A: "Ū" LATIN CAPITAL LETTER U WITH MACRON // U+00D1: "Ñ" LATIN CAPITAL LETTER N WITH TILDE // U+00C7: "Ç" LATIN CAPITAL LETTER C WITH CEDILLA assert_toTitleCaseOfKeyLabel(US, "\u00E0\u00E8\u00EE\u00F6\u016B\u00F1\u00E7", "\u00C0\u00C8\u00CE\u00D6\u016A\u00D1\u00C7"); // U+00DF: "ß" LATIN SMALL LETTER SHARP S // U+015B: "ś" LATIN SMALL LETTER S WITH ACUTE // U+0161: "š" LATIN SMALL LETTER S WITH CARON // U+015A: "Ś" LATIN CAPITAL LETTER S WITH ACUTE // U+0160: "Š" LATIN CAPITAL LETTER S WITH CARONZ assert_toTitleCaseOfKeyLabel(GERMAN, "\u00DF\u015B\u0161", "SS\u015A\u0160"); // U+0259: "ə" LATIN SMALL LETTER SCHWA // U+0069: "i" LATIN SMALL LETTER I // U+0131: "ı" LATIN SMALL LETTER DOTLESS I // U+018F: "Ə" LATIN SMALL LETTER SCHWA // U+0130: "İ" LATIN SMALL LETTER I WITH DOT ABOVE // U+0049: "I" LATIN SMALL LETTER I assert_toTitleCaseOfKeyLabel(TURKEY, "\u0259\u0069\u0131", "\u018F\u0130\u0049"); // U+03C3: "σ" GREEK SMALL LETTER SIGMA // U+03C2: "ς" GREEK SMALL LETTER FINAL SIGMA // U+03A3: "Σ" GREEK CAPITAL LETTER SIGMA assert_toTitleCaseOfKeyLabel(GREECE, "\u03C3\u03C2", "\u03A3\u03A3"); // U+03AC: "ά" GREEK SMALL LETTER ALPHA WITH TONOS // U+03AD: "έ" GREEK SMALL LETTER EPSILON WITH TONOS // U+03AE: "ή" GREEK SMALL LETTER ETA WITH TONOS // U+03AF: "ί" GREEK SMALL LETTER IOTA WITH TONOS // U+03CC: "ό" GREEK SMALL LETTER OMICRON WITH TONOS // U+03CD: "ύ" GREEK SMALL LETTER UPSILON WITH TONOS // U+03CE: "ώ" GREEK SMALL LETTER OMEGA WITH TONOS // U+0386: "Ά" GREEK CAPITAL LETTER ALPHA WITH TONOS // U+0388: "Έ" GREEK CAPITAL LETTER EPSILON WITH TONOS // U+0389: "Ή" GREEK CAPITAL LETTER ETA WITH TONOS // U+038A: "Ί" GREEK CAPITAL LETTER IOTA WITH TONOS // U+038C: "Ό" GREEK CAPITAL LETTER OMICRON WITH TONOS // U+038E: "Ύ" GREEK CAPITAL LETTER UPSILON WITH TONOS // U+038F: "Ώ" GREEK CAPITAL LETTER OMEGA WITH TONOS assert_toTitleCaseOfKeyLabel(GREECE, "\u03AC\u03AD\u03AE\u03AF\u03CC\u03CD\u03CE", "\u0386\u0388\u0389\u038A\u038C\u038E\u038F"); // U+03CA: "ϊ" GREEK SMALL LETTER IOTA WITH DIALYTIKA // U+03CB: "ϋ" GREEK SMALL LETTER UPSILON WITH DIALYTIKA // U+0390: "ΐ" GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS // U+03B0: "ΰ" GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS // U+03AA: "Ϊ" GREEK CAPITAL LETTER IOTA WITH DIALYTIKA // U+03AB: "Ϋ" GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA // U+0399: "Ι" GREEK CAPITAL LETTER IOTA // U+03A5: "Υ" GREEK CAPITAL LETTER UPSILON // U+0308: COMBINING DIAERESIS // U+0301: COMBINING GRAVE ACCENT assert_toTitleCaseOfKeyLabel(GREECE, "\u03CA\u03CB\u0390\u03B0", "\u03AA\u03AB\u0399\u0308\u0301\u03A5\u0308\u0301"); } private static void assert_toTitleCaseOfKeyCode(final Locale locale, final int lowerCase, final int expected) { assertEquals(lowerCase + " in " + locale, expected, StringUtils.toTitleCaseOfKeyCode(lowerCase, locale)); } @Test public void test_toTitleCaseOfKeyCode() { assert_toTitleCaseOfKeyCode(US, Constants.CODE_ENTER, Constants.CODE_ENTER); assert_toTitleCaseOfKeyCode(US, Constants.CODE_SPACE, Constants.CODE_SPACE); assert_toTitleCaseOfKeyCode(US, Constants.CODE_COMMA, Constants.CODE_COMMA); // U+0069: "i" LATIN SMALL LETTER I // U+0131: "ı" LATIN SMALL LETTER DOTLESS I // U+0130: "İ" LATIN SMALL LETTER I WITH DOT ABOVE // U+0049: "I" LATIN SMALL LETTER I assert_toTitleCaseOfKeyCode(US, 0x0069, 0x0049); // i -> I assert_toTitleCaseOfKeyCode(US, 0x0131, 0x0049); // ı -> I assert_toTitleCaseOfKeyCode(TURKEY, 0x0069, 0x0130); // i -> İ assert_toTitleCaseOfKeyCode(TURKEY, 0x0131, 0x0049); // ı -> I // U+00DF: "ß" LATIN SMALL LETTER SHARP S // The title case of "ß" is "SS". assert_toTitleCaseOfKeyCode(US, 0x00DF, Constants.CODE_UNSPECIFIED); // U+03AC: "ά" GREEK SMALL LETTER ALPHA WITH TONOS // U+0386: "Ά" GREEK CAPITAL LETTER ALPHA WITH TONOS assert_toTitleCaseOfKeyCode(GREECE, 0x03AC, 0x0386); // U+03CA: "ϊ" GREEK SMALL LETTER IOTA WITH DIALYTIKA // U+03AA: "Ϊ" GREEK CAPITAL LETTER IOTA WITH DIALYTIKA assert_toTitleCaseOfKeyCode(GREECE, 0x03CA, 0x03AA); // U+03B0: "ΰ" GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS // The title case of "ΰ" is "\u03A5\u0308\u0301". assert_toTitleCaseOfKeyCode(GREECE, 0x03B0, Constants.CODE_UNSPECIFIED); } private static void assert_capitalizeFirstCodePoint(final Locale locale, final String text, final String expected) { assertEquals(text + " in " + locale, expected, StringUtils.capitalizeFirstCodePoint(text, locale)); } @Test public void test_capitalizeFirstCodePoint() { assert_capitalizeFirstCodePoint(US, "", ""); assert_capitalizeFirstCodePoint(US, "a", "A"); assert_capitalizeFirstCodePoint(US, "à", "À"); assert_capitalizeFirstCodePoint(US, "ß", "SS"); assert_capitalizeFirstCodePoint(US, "text", "Text"); assert_capitalizeFirstCodePoint(US, "iGoogle", "IGoogle"); assert_capitalizeFirstCodePoint(TURKEY, "iyi", "İyi"); assert_capitalizeFirstCodePoint(TURKEY, "ısırdı", "Isırdı"); assert_capitalizeFirstCodePoint(GREECE, "ά", "Ά"); assert_capitalizeFirstCodePoint(GREECE, "άνεση", "Άνεση"); } private static void assert_capitalizeFirstAndDowncaseRest(final Locale locale, final String text, final String expected) { assertEquals(text + " in " + locale, expected, StringUtils.capitalizeFirstAndDowncaseRest(text, locale)); } @Test public void test_capitalizeFirstAndDowncaseRest() { assert_capitalizeFirstAndDowncaseRest(US, "", ""); assert_capitalizeFirstAndDowncaseRest(US, "a", "A"); assert_capitalizeFirstAndDowncaseRest(US, "à", "À"); assert_capitalizeFirstAndDowncaseRest(US, "ß", "SS"); assert_capitalizeFirstAndDowncaseRest(US, "text", "Text"); assert_capitalizeFirstAndDowncaseRest(US, "iGoogle", "Igoogle"); assert_capitalizeFirstAndDowncaseRest(US, "invite", "Invite"); assert_capitalizeFirstAndDowncaseRest(US, "INVITE", "Invite"); assert_capitalizeFirstAndDowncaseRest(TURKEY, "iyi", "İyi"); assert_capitalizeFirstAndDowncaseRest(TURKEY, "İYİ", "İyi"); assert_capitalizeFirstAndDowncaseRest(TURKEY, "ısırdı", "Isırdı"); assert_capitalizeFirstAndDowncaseRest(TURKEY, "ISIRDI", "Isırdı"); assert_capitalizeFirstAndDowncaseRest(GREECE, "ά", "Ά"); assert_capitalizeFirstAndDowncaseRest(GREECE, "άνεση", "Άνεση"); assert_capitalizeFirstAndDowncaseRest(GREECE, "ΆΝΕΣΗ", "Άνεση"); } @Test public void testContainsInArray() { assertFalse("empty array", StringUtils.containsInArray("key", new String[0])); assertFalse("not in 1 element", StringUtils.containsInArray("key", new String[] { "key1" })); assertFalse("not in 2 elements", StringUtils.containsInArray("key", new String[] { "key1", "key2" })); assertTrue("in 1 element", StringUtils.containsInArray("key", new String[] { "key" })); assertTrue("in 2 elements", StringUtils.containsInArray("key", new String[] { "key1", "key" })); } @Test public void testContainsInCommaSplittableText() { assertFalse("null", StringUtils.containsInCommaSplittableText("key", null)); assertFalse("empty", StringUtils.containsInCommaSplittableText("key", "")); assertFalse("not in 1 element", StringUtils.containsInCommaSplittableText("key", "key1")); assertFalse("not in 2 elements", StringUtils.containsInCommaSplittableText("key", "key1,key2")); assertTrue("in 1 element", StringUtils.containsInCommaSplittableText("key", "key")); assertTrue("in 2 elements", StringUtils.containsInCommaSplittableText("key", "key1,key")); } @Test public void testRemoveFromCommaSplittableTextIfExists() { assertEquals("null", "", StringUtils.removeFromCommaSplittableTextIfExists("key", null)); assertEquals("empty", "", StringUtils.removeFromCommaSplittableTextIfExists("key", "")); assertEquals("not in 1 element", "key1", StringUtils.removeFromCommaSplittableTextIfExists("key", "key1")); assertEquals("not in 2 elements", "key1,key2", StringUtils.removeFromCommaSplittableTextIfExists("key", "key1,key2")); assertEquals("in 1 element", "", StringUtils.removeFromCommaSplittableTextIfExists("key", "key")); assertEquals("in 2 elements at position 1", "key2", StringUtils.removeFromCommaSplittableTextIfExists("key", "key,key2")); assertEquals("in 2 elements at position 2", "key1", StringUtils.removeFromCommaSplittableTextIfExists("key", "key1,key")); assertEquals("in 3 elements at position 2", "key1,key3", StringUtils.removeFromCommaSplittableTextIfExists("key", "key1,key,key3")); assertEquals("in 3 elements at position 1,2,3", "", StringUtils.removeFromCommaSplittableTextIfExists("key", "key,key,key")); assertEquals("in 5 elements at position 2,4", "key1,key3,key5", StringUtils.removeFromCommaSplittableTextIfExists( "key", "key1,key,key3,key,key5")); } @Test public void testCapitalizeFirstCodePoint() { assertEquals("SSaa", StringUtils.capitalizeFirstCodePoint("ßaa", Locale.GERMAN)); assertEquals("Aßa", StringUtils.capitalizeFirstCodePoint("aßa", Locale.GERMAN)); assertEquals("Iab", StringUtils.capitalizeFirstCodePoint("iab", Locale.ENGLISH)); assertEquals("CAmElCaSe", StringUtils.capitalizeFirstCodePoint("cAmElCaSe", Locale.ENGLISH)); assertEquals("İab", StringUtils.capitalizeFirstCodePoint("iab", new Locale("tr"))); assertEquals("AİB", StringUtils.capitalizeFirstCodePoint("AİB", new Locale("tr"))); assertEquals("A", StringUtils.capitalizeFirstCodePoint("a", Locale.ENGLISH)); assertEquals("A", StringUtils.capitalizeFirstCodePoint("A", Locale.ENGLISH)); } @Test public void testCapitalizeFirstAndDowncaseRest() { assertEquals("SSaa", StringUtils.capitalizeFirstAndDowncaseRest("ßaa", Locale.GERMAN)); assertEquals("Aßa", StringUtils.capitalizeFirstAndDowncaseRest("aßa", Locale.GERMAN)); assertEquals("Iab", StringUtils.capitalizeFirstAndDowncaseRest("iab", Locale.ENGLISH)); assertEquals("Camelcase", StringUtils.capitalizeFirstAndDowncaseRest("cAmElCaSe", Locale.ENGLISH)); assertEquals("İab", StringUtils.capitalizeFirstAndDowncaseRest("iab", new Locale("tr"))); assertEquals("Aib", StringUtils.capitalizeFirstAndDowncaseRest("AİB", new Locale("tr"))); assertEquals("A", StringUtils.capitalizeFirstAndDowncaseRest("a", Locale.ENGLISH)); assertEquals("A", StringUtils.capitalizeFirstAndDowncaseRest("A", Locale.ENGLISH)); } @Test public void testGetCapitalizationType() { assertEquals(StringUtils.CAPITALIZE_NONE, StringUtils.getCapitalizationType("capitalize")); assertEquals(StringUtils.CAPITALIZE_NONE, StringUtils.getCapitalizationType("cApITalize")); assertEquals(StringUtils.CAPITALIZE_NONE, StringUtils.getCapitalizationType("capitalizE")); assertEquals(StringUtils.CAPITALIZE_NONE, StringUtils.getCapitalizationType("__c a piu$@tali56ze")); assertEquals(StringUtils.CAPITALIZE_FIRST, StringUtils.getCapitalizationType("A__c a piu$@tali56ze")); assertEquals(StringUtils.CAPITALIZE_FIRST, StringUtils.getCapitalizationType("Capitalize")); assertEquals(StringUtils.CAPITALIZE_FIRST, StringUtils.getCapitalizationType(" Capitalize")); assertEquals(StringUtils.CAPITALIZE_ALL, StringUtils.getCapitalizationType("CAPITALIZE")); assertEquals(StringUtils.CAPITALIZE_ALL, StringUtils.getCapitalizationType(" PI26LIE")); assertEquals(StringUtils.CAPITALIZE_NONE, StringUtils.getCapitalizationType("")); } @Test public void testIsIdenticalAfterUpcaseIsIdenticalAfterDowncase() { assertFalse(StringUtils.isIdenticalAfterUpcase("capitalize")); assertTrue(StringUtils.isIdenticalAfterDowncase("capitalize")); assertFalse(StringUtils.isIdenticalAfterUpcase("cApITalize")); assertFalse(StringUtils.isIdenticalAfterDowncase("cApITalize")); assertFalse(StringUtils.isIdenticalAfterUpcase("capitalizE")); assertFalse(StringUtils.isIdenticalAfterDowncase("capitalizE")); assertFalse(StringUtils.isIdenticalAfterUpcase("__c a piu$@tali56ze")); assertTrue(StringUtils.isIdenticalAfterDowncase("__c a piu$@tali56ze")); assertFalse(StringUtils.isIdenticalAfterUpcase("A__c a piu$@tali56ze")); assertFalse(StringUtils.isIdenticalAfterDowncase("A__c a piu$@tali56ze")); assertFalse(StringUtils.isIdenticalAfterUpcase("Capitalize")); assertFalse(StringUtils.isIdenticalAfterDowncase("Capitalize")); assertFalse(StringUtils.isIdenticalAfterUpcase(" Capitalize")); assertFalse(StringUtils.isIdenticalAfterDowncase(" Capitalize")); assertTrue(StringUtils.isIdenticalAfterUpcase("CAPITALIZE")); assertFalse(StringUtils.isIdenticalAfterDowncase("CAPITALIZE")); assertTrue(StringUtils.isIdenticalAfterUpcase(" PI26LIE")); assertFalse(StringUtils.isIdenticalAfterDowncase(" PI26LIE")); assertTrue(StringUtils.isIdenticalAfterUpcase("")); assertTrue(StringUtils.isIdenticalAfterDowncase("")); } private static void checkCapitalize(final String src, final String dst, final int[] sortedSeparators, final Locale locale) { assertEquals(dst, StringUtils.capitalizeEachWord(src, sortedSeparators, locale)); assert(src.equals(dst) == StringUtils.isIdenticalAfterCapitalizeEachWord(src, sortedSeparators)); } private static final int[] SPACE = { Constants.CODE_SPACE }; private static final int[] SPACE_PERIOD = StringUtils.toSortedCodePointArray(" ."); private static final int[] SENTENCE_SEPARATORS = StringUtils.toSortedCodePointArray(" \n.!?*()&"); private static final int[] WORD_SEPARATORS = StringUtils.toSortedCodePointArray(" \n.!?*,();&"); @Test public void testCapitalizeEachWord() { checkCapitalize("", "", SPACE, Locale.ENGLISH); checkCapitalize("test", "Test", SPACE, Locale.ENGLISH); checkCapitalize(" test", " Test", SPACE, Locale.ENGLISH); checkCapitalize("Test", "Test", SPACE, Locale.ENGLISH); checkCapitalize(" Test", " Test", SPACE, Locale.ENGLISH); checkCapitalize(".Test", ".test", SPACE, Locale.ENGLISH); checkCapitalize(".Test", ".Test", SPACE_PERIOD, Locale.ENGLISH); checkCapitalize("test and retest", "Test And Retest", SPACE_PERIOD, Locale.ENGLISH); checkCapitalize("Test and retest", "Test And Retest", SPACE_PERIOD, Locale.ENGLISH); checkCapitalize("Test And Retest", "Test And Retest", SPACE_PERIOD, Locale.ENGLISH); checkCapitalize("Test And.Retest ", "Test And.Retest ", SPACE_PERIOD, Locale.ENGLISH); checkCapitalize("Test And.retest ", "Test And.Retest ", SPACE_PERIOD, Locale.ENGLISH); checkCapitalize("Test And.retest ", "Test And.retest ", SPACE, Locale.ENGLISH); checkCapitalize("Test And.Retest ", "Test And.retest ", SPACE, Locale.ENGLISH); checkCapitalize("test and ietest", "Test And İetest", SPACE_PERIOD, new Locale("tr")); checkCapitalize("test and ietest", "Test And Ietest", SPACE_PERIOD, Locale.ENGLISH); checkCapitalize("Test&Retest", "Test&Retest", SENTENCE_SEPARATORS, Locale.ENGLISH); checkCapitalize("Test&retest", "Test&Retest", SENTENCE_SEPARATORS, Locale.ENGLISH); checkCapitalize("test&Retest", "Test&Retest", SENTENCE_SEPARATORS, Locale.ENGLISH); checkCapitalize("rest\nrecreation! And in the end...", "Rest\nRecreation! And In The End...", WORD_SEPARATORS, Locale.ENGLISH); checkCapitalize("lorem ipsum dolor sit amet", "Lorem Ipsum Dolor Sit Amet", WORD_SEPARATORS, Locale.ENGLISH); checkCapitalize("Lorem!Ipsum (Dolor) Sit * Amet", "Lorem!Ipsum (Dolor) Sit * Amet", WORD_SEPARATORS, Locale.ENGLISH); checkCapitalize("Lorem!Ipsum (dolor) Sit * Amet", "Lorem!Ipsum (Dolor) Sit * Amet", WORD_SEPARATORS, Locale.ENGLISH); } @Test public void testLooksLikeURL() { assertTrue(StringUtils.lastPartLooksLikeURL("http://www.google.")); assertFalse(StringUtils.lastPartLooksLikeURL("word wo")); assertTrue(StringUtils.lastPartLooksLikeURL("/etc/foo")); assertFalse(StringUtils.lastPartLooksLikeURL("left/right")); assertTrue(StringUtils.lastPartLooksLikeURL("www.goo")); assertTrue(StringUtils.lastPartLooksLikeURL("www.")); assertFalse(StringUtils.lastPartLooksLikeURL("U.S.A")); assertFalse(StringUtils.lastPartLooksLikeURL("U.S.A.")); assertTrue(StringUtils.lastPartLooksLikeURL("rtsp://foo.")); assertTrue(StringUtils.lastPartLooksLikeURL("://")); assertFalse(StringUtils.lastPartLooksLikeURL("abc/")); assertTrue(StringUtils.lastPartLooksLikeURL("abc.def/ghi")); assertFalse(StringUtils.lastPartLooksLikeURL("abc.def")); // TODO: ideally this would not look like a URL, but to keep down the complexity of the // code for now True is acceptable. assertTrue(StringUtils.lastPartLooksLikeURL("abc./def")); // TODO: ideally this would not look like a URL, but to keep down the complexity of the // code for now True is acceptable. assertTrue(StringUtils.lastPartLooksLikeURL(".abc/def")); } @Test public void testHexStringUtils() { final byte[] bytes = new byte[] { (byte)0x01, (byte)0x11, (byte)0x22, (byte)0x33, (byte)0x55, (byte)0x88, (byte)0xEE }; final String bytesStr = StringUtils.byteArrayToHexString(bytes); final byte[] bytes2 = StringUtils.hexStringToByteArray(bytesStr); for (int i = 0; i < bytes.length; ++i) { assertTrue(bytes[i] == bytes2[i]); } final String bytesStr2 = StringUtils.byteArrayToHexString(bytes2); assertTrue(bytesStr.equals(bytesStr2)); } @Test public void testToCodePointArray() { final String STR_WITH_SUPPLEMENTARY_CHAR = "abcde\uD861\uDED7fgh\u0000\u2002\u2003\u3000xx"; final int[] EXPECTED_RESULT = new int[] { 'a', 'b', 'c', 'd', 'e', 0x286D7, 'f', 'g', 'h', 0, 0x2002, 0x2003, 0x3000, 'x', 'x'}; final int[] codePointArray = StringUtils.toCodePointArray(STR_WITH_SUPPLEMENTARY_CHAR, 0, STR_WITH_SUPPLEMENTARY_CHAR.length()); assertEquals("toCodePointArray, size matches", codePointArray.length, EXPECTED_RESULT.length); for (int i = 0; i < EXPECTED_RESULT.length; ++i) { assertEquals("toCodePointArray position " + i, codePointArray[i], EXPECTED_RESULT[i]); } } @Test public void testCopyCodePointsAndReturnCodePointCount() { final String STR_WITH_SUPPLEMENTARY_CHAR = "AbcDE\uD861\uDED7fGh\u0000\u2002\u3000あx"; final int[] EXPECTED_RESULT = new int[] { 'A', 'b', 'c', 'D', 'E', 0x286D7, 'f', 'G', 'h', 0, 0x2002, 0x3000, 'あ', 'x'}; final int[] EXPECTED_RESULT_DOWNCASE = new int[] { 'a', 'b', 'c', 'd', 'e', 0x286D7, 'f', 'g', 'h', 0, 0x2002, 0x3000, 'あ', 'x'}; int[] codePointArray = new int[50]; int codePointCount = StringUtils.copyCodePointsAndReturnCodePointCount(codePointArray, STR_WITH_SUPPLEMENTARY_CHAR, 0, STR_WITH_SUPPLEMENTARY_CHAR.length(), false /* downCase */); assertEquals("copyCodePointsAndReturnCodePointCount, size matches", codePointCount, EXPECTED_RESULT.length); for (int i = 0; i < codePointCount; ++i) { assertEquals("copyCodePointsAndReturnCodePointCount position " + i, codePointArray[i], EXPECTED_RESULT[i]); } codePointCount = StringUtils.copyCodePointsAndReturnCodePointCount(codePointArray, STR_WITH_SUPPLEMENTARY_CHAR, 0, STR_WITH_SUPPLEMENTARY_CHAR.length(), true /* downCase */); assertEquals("copyCodePointsAndReturnCodePointCount downcase, size matches", codePointCount, EXPECTED_RESULT_DOWNCASE.length); for (int i = 0; i < codePointCount; ++i) { assertEquals("copyCodePointsAndReturnCodePointCount position " + i, codePointArray[i], EXPECTED_RESULT_DOWNCASE[i]); } final int JAVA_CHAR_COUNT = 8; final int CODEPOINT_COUNT = 7; codePointCount = StringUtils.copyCodePointsAndReturnCodePointCount(codePointArray, STR_WITH_SUPPLEMENTARY_CHAR, 0, JAVA_CHAR_COUNT, false /* downCase */); assertEquals("copyCodePointsAndReturnCodePointCount, size matches", codePointCount, CODEPOINT_COUNT); for (int i = 0; i < codePointCount; ++i) { assertEquals("copyCodePointsAndReturnCodePointCount position " + i, codePointArray[i], EXPECTED_RESULT[i]); } boolean exceptionHappened = false; codePointArray = new int[5]; try { codePointCount = StringUtils.copyCodePointsAndReturnCodePointCount(codePointArray, STR_WITH_SUPPLEMENTARY_CHAR, 0, JAVA_CHAR_COUNT, false /* downCase */); } catch (ArrayIndexOutOfBoundsException e) { exceptionHappened = true; } assertTrue("copyCodePointsAndReturnCodePointCount throws when array is too small", exceptionHappened); } @Test public void testGetTrailingSingleQuotesCount() { assertEquals(0, StringUtils.getTrailingSingleQuotesCount("")); assertEquals(1, StringUtils.getTrailingSingleQuotesCount("'")); assertEquals(5, StringUtils.getTrailingSingleQuotesCount("'''''")); assertEquals(0, StringUtils.getTrailingSingleQuotesCount("a")); assertEquals(0, StringUtils.getTrailingSingleQuotesCount("'this")); assertEquals(1, StringUtils.getTrailingSingleQuotesCount("'word'")); assertEquals(0, StringUtils.getTrailingSingleQuotesCount("I'm")); } }