1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/StringsInSwitch/OneCaseSwitches.java Mon Nov 02 21:36:59 2009 -0800
1.3 @@ -0,0 +1,303 @@
1.4 +/*
1.5 + * Copyright 2009 Sun Microsystems, Inc. All Rights Reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
1.23 + * CA 95054 USA or visit www.sun.com if you need additional information or
1.24 + * have any questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 6827009
1.30 + * @summary Positive tests for strings in switch with few alternatives.
1.31 + * @compile/fail -source 6 OneCaseSwitches.java
1.32 + * @compile OneCaseSwitches.java
1.33 + * @run main OneCaseSwitches
1.34 + * @author Joseph D. Darcy
1.35 + */
1.36 +
1.37 +import java.lang.reflect.*;
1.38 +import java.lang.annotation.*;
1.39 +import java.util.*;
1.40 +import static java.lang.annotation.RetentionPolicy.*;
1.41 +
1.42 +public class OneCaseSwitches {
1.43 + @Retention(RUNTIME)
1.44 + @interface TestMeForNull {}
1.45 +
1.46 + @TestMeForNull
1.47 + public static int zeroCasesNoDefault(String s, Set<String> stringSet, boolean expected) {
1.48 + int failures = 0;
1.49 + switch(s) {
1.50 + }
1.51 + return failures;
1.52 + }
1.53 +
1.54 + @TestMeForNull
1.55 + public static int zeroCasesWithDefault(String s, Set<String> stringSet, boolean expected) {
1.56 + int failures = 2;
1.57 + boolean addResult;
1.58 +
1.59 + switch(s) {
1.60 + default:
1.61 + failures = 0;
1.62 + addResult = stringSet.add(s);
1.63 + if (addResult != expected) {
1.64 + failures++;
1.65 + System.err.println("zeroCaseWithDefault: Expectedly got add result of " + addResult +
1.66 + " on string " + s);
1.67 + }
1.68 + }
1.69 +
1.70 + return failures;
1.71 + }
1.72 +
1.73 + @TestMeForNull
1.74 + public static int zeroCasesWithDefaultBreak(String s, Set<String> stringSet, boolean expected) {
1.75 + int failures = 2;
1.76 + boolean addResult;
1.77 +
1.78 + switch(s) {
1.79 + default:
1.80 + failures = zeroCasesWithDefault(s, stringSet, expected);
1.81 + break;
1.82 + }
1.83 +
1.84 + return failures;
1.85 + }
1.86 +
1.87 + @TestMeForNull
1.88 + public static int oneCaseNoDefault(String s, Set<String> stringSet, boolean expected) {
1.89 + int failures = 2;
1.90 + boolean addResult;
1.91 +
1.92 + switch(s) {
1.93 + case "foo":
1.94 + failures = 0;
1.95 + addResult = stringSet.add(s);
1.96 + if (addResult != expected) {
1.97 + failures++;
1.98 + System.err.println("oneCaseNoDefault: Unexpectedly got add result of " + addResult +
1.99 + " on string " + s);
1.100 + }
1.101 + }
1.102 +
1.103 + return failures;
1.104 + }
1.105 +
1.106 + @TestMeForNull
1.107 + public static int oneCaseNoDefaultBreak(String s, Set<String> stringSet, boolean expected) {
1.108 + int failures = 2;
1.109 + boolean addResult;
1.110 +
1.111 + switch(s) {
1.112 + case "foo":
1.113 + failures = oneCaseNoDefaultBreak(s, stringSet, expected);
1.114 + break;
1.115 + }
1.116 +
1.117 + return failures;
1.118 + }
1.119 +
1.120 + @TestMeForNull
1.121 + public static int oneCaseWithDefault(String s, Set<String> stringSet, boolean expected) {
1.122 + int failures = 2;
1.123 + boolean addResult;;
1.124 +
1.125 + switch(s) {
1.126 + case "foo":
1.127 + failures = 0;
1.128 + addResult = stringSet.add(s);
1.129 + if (addResult != expected) {
1.130 + failures++;
1.131 + System.err.println("oneCaseNoDefault: Expectedly got add result of " + addResult +
1.132 + " on string " + s);
1.133 + }
1.134 + break;
1.135 + default:
1.136 + break;
1.137 + }
1.138 +
1.139 + return failures;
1.140 + }
1.141 +
1.142 + @TestMeForNull
1.143 + public static int oneCaseBreakOnly(String s, Set<String> stringSet, boolean expected) {
1.144 + int failures = 1;
1.145 + switch(s) {
1.146 + case "foo":
1.147 + break;
1.148 + }
1.149 + failures = 0;
1.150 + return failures;
1.151 + }
1.152 +
1.153 + @TestMeForNull
1.154 + public static int oneCaseDefaultBreakOnly(String s, Set<String> stringSet, boolean expected) {
1.155 + int failures = 1;
1.156 + switch(s) {
1.157 + default:
1.158 + break;
1.159 + }
1.160 + failures = 0;
1.161 + return failures;
1.162 + }
1.163 +
1.164 +
1.165 + static int testNullBehavior() {
1.166 + int failures = 0;
1.167 + int count = 0;
1.168 +
1.169 + Method[] methods = OneCaseSwitches.class.getDeclaredMethods();
1.170 +
1.171 + try {
1.172 + for(Method method : methods) {
1.173 + count++;
1.174 + try {
1.175 + if (method.isAnnotationPresent(TestMeForNull.class)) {
1.176 + System.out.println("Testing method " + method);
1.177 + method.invoke(null, (String)null, emptyStringSet, false);
1.178 + failures++;
1.179 + System.err.println("Didn't get NPE as expected from " + method);
1.180 + }
1.181 + } catch (InvocationTargetException ite) { // Expected
1.182 + Throwable targetException = ite.getTargetException();
1.183 + if (! (targetException instanceof NullPointerException)) {
1.184 + failures++; // Wrong exception thrown
1.185 + System.err.println("Didn't get expected target exception NPE, got " +
1.186 + ite.getClass().getName());
1.187 + }
1.188 + }
1.189 + }
1.190 + } catch (Exception e) {
1.191 + throw new RuntimeException(e);
1.192 + }
1.193 +
1.194 + if (count == 0) {
1.195 + failures++;
1.196 + System.err.println("Did not find any annotated methods.");
1.197 + }
1.198 + return failures;
1.199 + }
1.200 +
1.201 + static int testZeroCases() {
1.202 + int failures = 0;
1.203 + Set<String> noDefaultSet = new HashSet<String>();
1.204 + Set<String> defaultSet = new HashSet<String>();
1.205 +
1.206 + zeroCasesNoDefault(FOO, noDefaultSet, false);
1.207 + for(String word : words) {
1.208 + zeroCasesNoDefault(word, noDefaultSet, false);
1.209 + }
1.210 +
1.211 + if (!noDefaultSet.isEmpty()) {
1.212 + failures++;
1.213 + System.err.println("Non-empty set after zeroCasesNoDefault");
1.214 + }
1.215 +
1.216 + for(String word : words) {
1.217 + zeroCasesWithDefault(word, defaultSet, true);
1.218 + }
1.219 + if (defaultSet.size() != words.length) {
1.220 + failures++;
1.221 + System.err.println("Missing strings after zeroCasesWithDefault");
1.222 + }
1.223 +
1.224 + return failures;
1.225 + }
1.226 +
1.227 + static int testOneCaseNoDefault() {
1.228 + int failures = 0;
1.229 + Set<String> s = new HashSet<String>();
1.230 + s.add("foo");
1.231 + Set<String> fooSet = Collections.unmodifiableSet(s);
1.232 + Set<String> testSet = new HashSet<String>();
1.233 +
1.234 + oneCaseNoDefault(FOO, testSet, true);
1.235 + if (!testSet.equals(fooSet)) {
1.236 + failures++;
1.237 + System.err.println("Unexpected result from oneCaseNoDefault: didn't get {\"Foo\"}");
1.238 + }
1.239 +
1.240 + for(String word : words) {
1.241 + oneCaseNoDefault(word, testSet, false);
1.242 + }
1.243 + if (!testSet.equals(fooSet)) {
1.244 + failures++;
1.245 + System.err.println("Unexpected result from oneCaseNoDefault: didn't get {\"Foo\"}");
1.246 + }
1.247 +
1.248 + return failures;
1.249 + }
1.250 +
1.251 + static int testBreakOnly() {
1.252 + int failures = 0;
1.253 +
1.254 + for(String word : words) {
1.255 + failures += oneCaseBreakOnly(word, emptyStringSet, true);
1.256 + failures += oneCaseDefaultBreakOnly(word, emptyStringSet, true);
1.257 + }
1.258 +
1.259 + return failures;
1.260 + }
1.261 +
1.262 + static int testExpressionEval() {
1.263 + String s = "a";
1.264 + int errors = 2;
1.265 +
1.266 + System.out.println("Testing expression evaluation.");
1.267 +
1.268 + switch (s + s) {
1.269 + case "aa":
1.270 + errors = 0;
1.271 + break;
1.272 +
1.273 + case "aaaa":
1.274 + errors = 1;
1.275 + System.err.println("Suspected bad expression evaluation.");
1.276 + break;
1.277 +
1.278 + default:
1.279 + throw new RuntimeException("Should not reach here.");
1.280 + }
1.281 + return errors;
1.282 + }
1.283 +
1.284 + static final String FOO = "foo";
1.285 +
1.286 + static final String[] words = {"baz",
1.287 + "quux",
1.288 + "wombat",
1.289 + "\u0ccc\u0012"}; // hash collision with "foo"
1.290 +
1.291 + final static Set<String> emptyStringSet = Collections.emptySet();
1.292 +
1.293 + public static void main(String... args) {
1.294 + int failures = 0;
1.295 +
1.296 + failures += testNullBehavior();
1.297 + failures += testZeroCases();
1.298 + failures += testOneCaseNoDefault();
1.299 + failures += testBreakOnly();
1.300 + failures += testExpressionEval();
1.301 +
1.302 + if (failures > 0) {
1.303 + throw new RuntimeException();
1.304 + }
1.305 + }
1.306 +}
