Rename to Kelar Keyboard (org.kelar.inputmethod.latin)

1 files changed, 501 insertions, 0 deletions

diff --git a/tests/src/org/kelar/inputmethod/latin/common/StringUtilsTests.java b/tests/src/org/kelar/inputmethod/latin/common/StringUtilsTests.java
new file mode 100644
index 000000000..016819ce8
--- /dev/null
+++ b/tests/src/org/kelar/inputmethod/latin/common/StringUtilsTests.java
@@ -0,0 +1,501 @@
+/*
+ * 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 org.kelar.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"));
+    }
+}