The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2008 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | package android.core; |
| 18 | |
| 19 | import android.test.suitebuilder.annotation.SmallTest; |
The Android Open Source Project | 9066cfe | 2009-03-03 19:31:44 -0800 | [diff] [blame] | 20 | |
| 21 | import junit.framework.TestCase; |
| 22 | |
| 23 | import java.util.regex.Matcher; |
| 24 | import java.util.regex.Pattern; |
| 25 | |
| 26 | /** |
| 27 | * Tests basic functionality of Pattern and Matcher classes. |
| 28 | */ |
| 29 | public class RegexTest extends TestCase { |
| 30 | |
| 31 | @SmallTest |
| 32 | public void testMatches() throws Exception { |
| 33 | /* Tests class Matcher */ |
| 34 | |
| 35 | Pattern p = Pattern.compile("bcd"); |
| 36 | Matcher m = p.matcher("bcd"); |
| 37 | assertTrue("Should match.", m.matches()); |
| 38 | |
| 39 | /* Pattern in the middle */ |
| 40 | p = Pattern.compile("bcd"); |
| 41 | m = p.matcher("abcdefg"); |
| 42 | assertFalse("Should not match.", m.matches()); |
| 43 | |
| 44 | /* Pattern at the head */ |
| 45 | m = p.matcher("bcdefg"); |
| 46 | assertFalse("Should not match.", m.matches()); |
| 47 | |
| 48 | /* Pattern at the tail */ |
| 49 | m = p.matcher("abcd"); |
| 50 | assertFalse("Should not match.", m.matches()); |
| 51 | |
| 52 | /* Make sure matches() doesn't change after calls to find() */ |
| 53 | p = Pattern.compile(".*"); |
| 54 | m = p.matcher("abc"); |
| 55 | assertTrue(m.matches()); |
| 56 | assertTrue(m.find()); |
| 57 | assertTrue(m.matches()); |
| 58 | |
| 59 | p = Pattern.compile("."); |
| 60 | m = p.matcher("abc"); |
| 61 | assertFalse(m.matches()); |
| 62 | assertTrue(m.find()); |
| 63 | assertFalse(m.matches()); |
| 64 | |
| 65 | /* Make sure matches() agrees after a reset() */ |
| 66 | m.reset("z"); |
| 67 | assertTrue(m.matches()); |
| 68 | |
| 69 | m.reset("xyz"); |
| 70 | assertFalse(m.matches()); |
| 71 | |
| 72 | /* Tests class Pattern */ |
| 73 | |
| 74 | assertFalse("Erroneously matched partial string. " + |
| 75 | "See http://b/issue?id=754601", Pattern.matches("er", "xer")); |
| 76 | assertFalse("Erroneously matched partial string. " + |
| 77 | "See http://b/issue?id=754601", Pattern.matches("xe", "xer")); |
| 78 | assertTrue("Generic regex should match.", |
| 79 | Pattern.matches(".*", "bcd")); |
| 80 | assertTrue("Grouped regex should match.", |
| 81 | Pattern.matches("(b(c(d)))", "bcd")); |
| 82 | assertTrue("Grouped regex should match.", |
| 83 | Pattern.matches("(b)(c)(d)", "bcd")); |
| 84 | } |
| 85 | |
| 86 | @SmallTest |
| 87 | public void testGroupCount() throws Exception { |
| 88 | Pattern p = Pattern.compile( |
| 89 | "\\b(?:\\+?1)?" |
| 90 | + "(?:[ -\\.])?" |
| 91 | + "\\(?(\\d{3})?\\)?" |
| 92 | + "(?:[ -\\.\\/])?" |
| 93 | + "(\\d{3})" |
| 94 | + "(?:[ -\\.])?" |
| 95 | + "(\\d{4})\\b" |
| 96 | ); |
| 97 | |
| 98 | Matcher m = p.matcher("1 (919) 555-1212"); |
| 99 | |
| 100 | assertEquals("groupCount is incorrect, see http://b/issue?id=759412", |
| 101 | 3, m.groupCount()); |
| 102 | } |
| 103 | |
| 104 | @SmallTest |
| 105 | public void testGroups() throws Exception { |
| 106 | Pattern p = Pattern.compile("(b)([c|d])(z*)"); |
| 107 | Matcher m = p.matcher("abcdefg"); |
| 108 | |
| 109 | /* Must call find() first, otherwise group*() are undefined. */ |
| 110 | assertTrue(m.find()); |
| 111 | |
| 112 | assertEquals(3, m.groupCount()); |
| 113 | |
| 114 | assertEquals("bc", m.group(0)); |
| 115 | assertEquals("b", m.group(1)); |
| 116 | assertEquals("c", m.group(2)); |
| 117 | assertEquals("", m.group(3)); |
| 118 | } |
| 119 | |
| 120 | @SmallTest |
| 121 | public void testFind() throws Exception { |
| 122 | Pattern p = Pattern.compile("."); |
| 123 | Matcher m = p.matcher("abc"); |
| 124 | |
| 125 | assertTrue(m.find()); |
| 126 | assertEquals("a", m.group(0)); |
| 127 | |
| 128 | assertTrue(m.find()); |
| 129 | assertEquals("b", m.group(0)); |
| 130 | |
| 131 | assertTrue(m.find()); |
| 132 | assertEquals("c", m.group(0)); |
| 133 | |
| 134 | assertFalse(m.find()); |
| 135 | } |
| 136 | |
| 137 | @SmallTest |
| 138 | public void testReplaceAll() throws Exception { |
| 139 | // Begins with non-matching text, ends with matching text |
| 140 | Pattern p = Pattern.compile("a*b"); |
| 141 | Matcher m = p.matcher("fooaabfooaabfooabfoob"); |
| 142 | |
| 143 | String r = m.replaceAll("-"); |
| 144 | assertEquals("foo-foo-foo-foo-", r); |
| 145 | |
| 146 | // Begins with matching text, ends with non-matching text |
| 147 | p = Pattern.compile("a*b"); |
| 148 | m = p.matcher("aabfooaabfooabfoobfoo"); |
| 149 | |
| 150 | r = m.replaceAll("-"); |
| 151 | assertEquals("-foo-foo-foo-foo", r); |
| 152 | } |
| 153 | |
| 154 | @SmallTest |
| 155 | public void testReplaceFirst() throws Exception { |
| 156 | // Begins with non-matching text, ends with matching text |
| 157 | Pattern p = Pattern.compile("a*b"); |
| 158 | Matcher m = p.matcher("fooaabfooaabfooabfoob"); |
| 159 | |
| 160 | String r = m.replaceFirst("-"); |
| 161 | assertEquals("foo-fooaabfooabfoob", r); |
| 162 | |
| 163 | // Begins with matching text, ends with non-matching text |
| 164 | p = Pattern.compile("a*b"); |
| 165 | m = p.matcher("aabfooaabfooabfoobfoo"); |
| 166 | |
| 167 | r = m.replaceFirst("-"); |
| 168 | assertEquals("-fooaabfooabfoobfoo", r); |
| 169 | } |
| 170 | |
| 171 | @SmallTest |
| 172 | public void testSplit() throws Exception { |
| 173 | Pattern p = Pattern.compile(":"); |
| 174 | String[] strings; |
| 175 | |
| 176 | strings = p.split("boo:and:foo"); |
| 177 | assertEquals(3, strings.length); |
| 178 | assertEquals("boo", strings[0]); |
| 179 | assertEquals("and", strings[1]); |
| 180 | assertEquals("foo", strings[2]); |
| 181 | |
| 182 | strings = p.split("boo:and:foo", 2); |
| 183 | assertEquals(2, strings.length); |
| 184 | assertEquals("boo", strings[0]); |
| 185 | assertEquals("and:foo", strings[1]); |
| 186 | |
| 187 | strings = p.split("boo:and:foo", 5); |
| 188 | assertEquals(3, strings.length); |
| 189 | assertEquals("boo", strings[0]); |
| 190 | assertEquals("and", strings[1]); |
| 191 | assertEquals("foo", strings[2]); |
| 192 | |
| 193 | strings = p.split("boo:and:foo", -2); |
| 194 | assertEquals(3, strings.length); |
| 195 | assertEquals("boo", strings[0]); |
| 196 | assertEquals("and", strings[1]); |
| 197 | assertEquals("foo", strings[2]); |
| 198 | |
| 199 | p = Pattern.compile("o"); |
| 200 | |
| 201 | strings = p.split("boo:and:foo"); |
| 202 | assertEquals(3, strings.length); |
| 203 | assertEquals("b", strings[0]); |
| 204 | assertEquals("", strings[1]); |
| 205 | assertEquals(":and:f", strings[2]); |
| 206 | |
| 207 | strings = p.split("boo:and:foo", 5); |
| 208 | assertEquals(5, strings.length); |
| 209 | assertEquals("b", strings[0]); |
| 210 | assertEquals("", strings[1]); |
| 211 | assertEquals(":and:f", strings[2]); |
| 212 | assertEquals("", strings[3]); |
| 213 | assertEquals("", strings[4]); |
| 214 | |
| 215 | strings = p.split("boo:and:foo", -2); |
| 216 | assertEquals(5, strings.length); |
| 217 | assertEquals("b", strings[0]); |
| 218 | assertEquals("", strings[1]); |
| 219 | assertEquals(":and:f", strings[2]); |
| 220 | assertEquals("", strings[3]); |
| 221 | assertEquals("", strings[4]); |
| 222 | |
| 223 | strings = p.split("boo:and:foo", 0); |
| 224 | assertEquals(3, strings.length); |
| 225 | assertEquals("b", strings[0]); |
| 226 | assertEquals("", strings[1]); |
| 227 | assertEquals(":and:f", strings[2]); |
| 228 | } |
| 229 | |
| 230 | // ------------------------------------------------------------------- |
| 231 | // Regression test for #1172774: Bug in Regex.java |
| 232 | // Regression test for #1216887: Regular expression match is very slow |
| 233 | public static final Pattern TOP_LEVEL_DOMAIN_PATTERN = Pattern.compile( |
| 234 | "((aero|arpa|asia|a[cdefgilmnoqrstuwxz])" |
| 235 | + "|(biz|b[abdefghijmnorstvwyz])" |
| 236 | + "|(cat|com|coop|c[acdfghiklmnoruvxyz])" |
| 237 | + "|d[ejkmoz]" |
| 238 | + "|(edu|e[cegrstu])" |
| 239 | + "|f[ijkmor]" |
| 240 | + "|(gov|g[abdefghilmnpqrstuwy])" |
| 241 | + "|h[kmnrtu]" |
| 242 | + "|(info|int|i[delmnoqrst])" |
| 243 | + "|(jobs|j[emop])" |
| 244 | + "|k[eghimnrwyz]" |
| 245 | + "|l[abcikrstuvy]" |
| 246 | + "|(mil|mobi|museum|m[acdghklmnopqrstuvwxyz])" |
| 247 | + "|(name|net|n[acefgilopruz])" |
| 248 | + "|(org|om)" |
| 249 | + "|(pro|p[aefghklmnrstwy])" |
| 250 | + "|qa" |
| 251 | + "|r[eouw]" |
| 252 | + "|s[abcdeghijklmnortuvyz]" |
| 253 | + "|(tel|travel|t[cdfghjklmnoprtvwz])" |
| 254 | + "|u[agkmsyz]" |
| 255 | + "|v[aceginu]" |
| 256 | + "|w[fs]" |
| 257 | + "|y[etu]" |
| 258 | + "|z[amw])"); |
| 259 | |
| 260 | public static final Pattern EMAIL_ADDRESS_PATTERN = Pattern.compile( |
| 261 | "[\\+a-zA-Z0-9\\.\\_\\%\\-]+\\@" |
| 262 | + "((" |
| 263 | + "[a-zA-Z0-9]\\.|" |
| 264 | + "([a-zA-Z0-9][a-zA-Z0-9\\-]*[a-zA-Z0-9]\\.)+)" |
| 265 | + TOP_LEVEL_DOMAIN_PATTERN |
| 266 | + ")"); |
| 267 | |
| 268 | @SmallTest |
| 269 | public void testMonsterRegexCorrectness() { |
| 270 | assertTrue(EMAIL_ADDRESS_PATTERN.matcher("a+b@gmail.com").matches()); |
| 271 | } |
| 272 | |
| 273 | @SmallTest |
| 274 | public void testMonsterRegexPerformance() { |
| 275 | android.util.Log.e("RegexTest", "RegEx performance test started."); |
| 276 | long t0 = System.currentTimeMillis(); |
| 277 | Matcher m = EMAIL_ADDRESS_PATTERN.matcher("donot repeate@RC8jjjjjjjjjjjjjjj"); |
| 278 | assertFalse(m.find()); |
| 279 | long t1 = System.currentTimeMillis(); |
| 280 | android.util.Log.e("RegexTest", "RegEx performance test finished, " + |
| 281 | "took " + (t1 - t0) + " ms."); |
| 282 | } |
| 283 | |
| 284 | // |
| 285 | // ------------------------------------------------------------------- |
| 286 | |
| 287 | } |