SplitTest.java revision 870fd9b66c51b18966fb18ec65705efab9cf0d50
1package org.apache.harmony.regex.tests.java.util.regex; 2 3import dalvik.annotation.TestTargetClass; 4import dalvik.annotation.TestTargets; 5import dalvik.annotation.TestTargetNew; 6import dalvik.annotation.TestLevel; 7 8import junit.framework.TestCase; 9import java.util.regex.*; 10 11@TestTargetClass(java.util.regex.Pattern.class) 12/** 13 * TODO Type description 14 * 15 */ 16public class SplitTest extends TestCase { 17 @TestTargets({ 18 @TestTargetNew( 19 level = TestLevel.PARTIAL_COMPLETE, 20 notes = "Verifies the basic functionality of split(java.lang.CharSequence) & compile(java.lang.String)methods.", 21 method = "split", 22 args = {java.lang.CharSequence.class} 23 ), 24 @TestTargetNew( 25 level = TestLevel.PARTIAL_COMPLETE, 26 notes = "Verifies the basic functionality of split(java.lang.CharSequence) & compile(java.lang.String)methods.", 27 method = "compile", 28 args = {java.lang.String.class} 29 ) 30 }) 31 public void testSimple() { 32 Pattern p = Pattern.compile("/"); 33 String[] results = p.split("have/you/done/it/right"); 34 String[] expected = new String[] { "have", "you", "done", "it", "right" }; 35 assertArraysEqual(expected, results); 36 } 37 38 @TestTargets({ 39 @TestTargetNew( 40 level = TestLevel.PARTIAL_COMPLETE, 41 notes = "Verifies the basic functionality of split with empty matches.", 42 method = "split", 43 args = {java.lang.CharSequence.class} 44 ) 45 }) 46 public void testEmptySplits() { 47 // Trailing empty matches are removed. 48 assertArraysEqual(new String[0], "hello".split(".")); 49 assertArraysEqual(new String[] { "1", "2" }, "1:2:".split(":")); 50 // ...including when that results in an empty result. 51 assertArraysEqual(new String[0], ":".split(":")); 52 // ...but not when limit < 0. 53 assertArraysEqual(new String[] { "1", "2", "" }, "1:2:".split(":", -1)); 54 55 // Leading empty matches are retained. 56 assertArraysEqual(new String[] { "", "", "o" }, "hello".split("..")); 57 58 // A separator that doesn't occur in the input gets you the input. 59 assertArraysEqual(new String[] { "hello" }, "hello".split("not-present-in-test")); 60 // ...including when the input is the empty string. 61 // (Perl returns an empty list instead.) 62 assertArraysEqual(new String[] { "" }, "".split("not-present-in-test")); 63 assertArraysEqual(new String[] { "" }, "".split("A?")); 64 65 // The limit argument controls the size of the result. 66 // If l == 0, the result is as long as needed, except trailing empty matches are dropped. 67 // If l < 0, the result is as long as needed, and trailing empty matches are retained. 68 // If l > 0, the result contains the first l matches, plus one string containing the remaining input. 69 // Examples without a trailing separator (and hence without a trailing empty match): 70 assertArraysEqual(new String[] { "a", "b", "c" }, "a,b,c".split(",", 0)); 71 assertArraysEqual(new String[] { "a,b,c" }, "a,b,c".split(",", 1)); 72 assertArraysEqual(new String[] { "a", "b,c" }, "a,b,c".split(",", 2)); 73 assertArraysEqual(new String[] { "a", "b", "c" }, "a,b,c".split(",", 3)); 74 assertArraysEqual(new String[] { "a", "b", "c" }, "a,b,c".split(",", Integer.MAX_VALUE)); 75 // Examples with a trailing separator (and hence possibly with a trailing empty match): 76 assertArraysEqual(new String[] { "a", "b", "c" }, "a,b,c,".split(",", 0)); 77 assertArraysEqual(new String[] { "a,b,c," }, "a,b,c,".split(",", 1)); 78 assertArraysEqual(new String[] { "a", "b,c," }, "a,b,c,".split(",", 2)); 79 assertArraysEqual(new String[] { "a", "b", "c," }, "a,b,c,".split(",", 3)); 80 assertArraysEqual(new String[] { "a", "b", "c", "" }, "a,b,c,".split(",", Integer.MAX_VALUE)); 81 assertArraysEqual(new String[] { "a", "b", "c", "" }, "a,b,c,".split(",", -1)); 82 } 83 84 private void assertArraysEqual(String[] expected, String[] actual) { 85 assertEquals(expected.length, actual.length); 86 for (int i = 0; i < expected.length; i++) { 87 assertEquals(Integer.toString(i), expected[i], actual[i]); 88 } 89 } 90 91 @TestTargetNew( 92 level = TestLevel.PARTIAL_COMPLETE, 93 notes = "Verifies the functionality of split(java.lang.CharSequence). Test uses not empty pattern.", 94 method = "split", 95 args = {java.lang.CharSequence.class, int.class} 96 ) 97 public void testSplit1() throws PatternSyntaxException { 98 Pattern p = Pattern.compile(" "); 99 100 String input = "poodle zoo"; 101 String tokens[]; 102 103 tokens = p.split(input, 1); 104 assertEquals(1, tokens.length); 105 assertTrue(tokens[0].equals(input)); 106 tokens = p.split(input, 2); 107 assertEquals(2, tokens.length); 108 assertEquals("poodle", tokens[0]); 109 assertEquals("zoo", tokens[1]); 110 tokens = p.split(input, 5); 111 assertEquals(2, tokens.length); 112 assertEquals("poodle", tokens[0]); 113 assertEquals("zoo", tokens[1]); 114 tokens = p.split(input, -2); 115 assertEquals(2, tokens.length); 116 assertEquals("poodle", tokens[0]); 117 assertEquals("zoo", tokens[1]); 118 tokens = p.split(input, 0); 119 assertEquals(2, tokens.length); 120 assertEquals("poodle", tokens[0]); 121 assertEquals("zoo", tokens[1]); 122 tokens = p.split(input); 123 assertEquals(2, tokens.length); 124 assertEquals("poodle", tokens[0]); 125 assertEquals("zoo", tokens[1]); 126 127 p = Pattern.compile("d"); 128 129 tokens = p.split(input, 1); 130 assertEquals(1, tokens.length); 131 assertTrue(tokens[0].equals(input)); 132 tokens = p.split(input, 2); 133 assertEquals(2, tokens.length); 134 assertEquals("poo", tokens[0]); 135 assertEquals("le zoo", tokens[1]); 136 tokens = p.split(input, 5); 137 assertEquals(2, tokens.length); 138 assertEquals("poo", tokens[0]); 139 assertEquals("le zoo", tokens[1]); 140 tokens = p.split(input, -2); 141 assertEquals(2, tokens.length); 142 assertEquals("poo", tokens[0]); 143 assertEquals("le zoo", tokens[1]); 144 tokens = p.split(input, 0); 145 assertEquals(2, tokens.length); 146 assertEquals("poo", tokens[0]); 147 assertEquals("le zoo", tokens[1]); 148 tokens = p.split(input); 149 assertEquals(2, tokens.length); 150 assertEquals("poo", tokens[0]); 151 assertEquals("le zoo", tokens[1]); 152 153 p = Pattern.compile("o"); 154 155 tokens = p.split(input, 1); 156 assertEquals(1, tokens.length); 157 assertTrue(tokens[0].equals(input)); 158 tokens = p.split(input, 2); 159 assertEquals(2, tokens.length); 160 assertEquals("p", tokens[0]); 161 assertEquals("odle zoo", tokens[1]); 162 tokens = p.split(input, 5); 163 assertEquals(5, tokens.length); 164 assertEquals("p", tokens[0]); 165 assertTrue(tokens[1].equals("")); 166 assertEquals("dle z", tokens[2]); 167 assertTrue(tokens[3].equals("")); 168 assertTrue(tokens[4].equals("")); 169 tokens = p.split(input, -2); 170 assertEquals(5, tokens.length); 171 assertEquals("p", tokens[0]); 172 assertTrue(tokens[1].equals("")); 173 assertEquals("dle z", tokens[2]); 174 assertTrue(tokens[3].equals("")); 175 assertTrue(tokens[4].equals("")); 176 tokens = p.split(input, 0); 177 assertEquals(3, tokens.length); 178 assertEquals("p", tokens[0]); 179 assertTrue(tokens[1].equals("")); 180 assertEquals("dle z", tokens[2]); 181 tokens = p.split(input); 182 assertEquals(3, tokens.length); 183 assertEquals("p", tokens[0]); 184 assertTrue(tokens[1].equals("")); 185 assertEquals("dle z", tokens[2]); 186 } 187 188 @TestTargetNew( 189 level = TestLevel.PARTIAL_COMPLETE, 190 notes = "Verifies the functionality of split(java.lang.CharSequence). Test uses empty pattern.", 191 method = "split", 192 args = {java.lang.CharSequence.class, int.class} 193 ) 194 public void testSplit2() { 195 Pattern p = Pattern.compile(""); 196 String s[]; 197 s = p.split("a", -1); 198 assertEquals(3, s.length); 199 assertEquals("", s[0]); 200 assertEquals("a", s[1]); 201 assertEquals("", s[2]); 202 203 s = p.split("", -1); 204 assertEquals(1, s.length); 205 assertEquals("", s[0]); 206 207 s = p.split("abcd", -1); 208 assertEquals(6, s.length); 209 assertEquals("", s[0]); 210 assertEquals("a", s[1]); 211 assertEquals("b", s[2]); 212 assertEquals("c", s[3]); 213 assertEquals("d", s[4]); 214 assertEquals("", s[5]); 215 216 // Regression test for Android 217 assertEquals("GOOG,23,500".split("|").length, 12); 218 } 219 220 221 @TestTargets({ 222 @TestTargetNew( 223 level = TestLevel.PARTIAL_COMPLETE, 224 notes = "Verifies the functionality of split(java.lang.CharSequence) & compile(java.lang.String, int) methods. Test uses empty pattern and supplementary chars.", 225 method = "split", 226 args = {java.lang.CharSequence.class, int.class} 227 ), 228 @TestTargetNew( 229 level = TestLevel.PARTIAL_COMPLETE, 230 notes = "Verifies the functionality of split(java.lang.CharSequence) & compile(java.lang.String, int) methods. Test uses empty pattern and supplementary chars.", 231 method = "compile", 232 args = {java.lang.String.class} 233 ) 234 }) 235 public void testSplitSupplementaryWithEmptyString() { 236 237 /* 238 * See http://www.unicode.org/reports/tr18/#Supplementary_Characters 239 * We have to treat text as code points not code units. 240 */ 241 Pattern p = Pattern.compile(""); 242 String s[]; 243 s = p.split("a\ud869\uded6b", -1); 244 assertEquals(5, s.length); 245 assertEquals("", s[0]); 246 assertEquals("a", s[1]); 247 assertEquals("\ud869\uded6", s[2]); 248 assertEquals("b", s[3]); 249 assertEquals("", s[4]); 250 } 251} 252