1 // Copyright (C) 2016 and later: Unicode, Inc. and others.
2 // License & terms of use: http://www.unicode.org/copyright.html
4 *******************************************************************************
5 * Copyright (C) 2015, International Business Machines Corporation and *
6 * others. All Rights Reserved. *
7 *******************************************************************************
9 * File UNIFIEDCACHETEST.CPP
11 ********************************************************************************
15 #include "unifiedcache.h"
16 #include "unicode/datefmt.h"
18 class UCTItem : public SharedObject {
21 UCTItem(const char *x) : value(NULL) {
22 value = uprv_strdup(x);
29 class UCTItem2 : public SharedObject {
35 const UCTItem *LocaleCacheKey<UCTItem>::createObject(
36 const void *context, UErrorCode &status) const {
37 const UnifiedCache *cacheContext = (const UnifiedCache *) context;
38 if (uprv_strcmp(fLoc.getName(), "zh") == 0) {
39 status = U_MISSING_RESOURCE_ERROR;
42 if (uprv_strcmp(fLoc.getLanguage(), fLoc.getName()) != 0) {
43 const UCTItem *item = NULL;
44 if (cacheContext == NULL) {
45 UnifiedCache::getByLocale(fLoc.getLanguage(), item, status);
47 cacheContext->get(LocaleCacheKey<UCTItem>(fLoc.getLanguage()), item, status);
49 if (U_FAILURE(status)) {
54 UCTItem *result = new UCTItem(fLoc.getName());
60 const UCTItem2 *LocaleCacheKey<UCTItem2>::createObject(
61 const void * /*unused*/, UErrorCode & /*status*/) const {
68 class UnifiedCacheTest : public IntlTest {
72 void runIndexedTest(int32_t index, UBool exec, const char *&name, char *par=0);
74 void TestEvictionPolicy();
78 void TestHashEquals();
79 void TestEvictionUnderStress();
82 void UnifiedCacheTest::runIndexedTest(int32_t index, UBool exec, const char* &name, char* /*par*/) {
84 TESTCASE_AUTO(TestEvictionPolicy);
85 TESTCASE_AUTO(TestBounded);
86 TESTCASE_AUTO(TestBasic);
87 TESTCASE_AUTO(TestError);
88 TESTCASE_AUTO(TestHashEquals);
89 TESTCASE_AUTO(TestEvictionUnderStress);
93 void UnifiedCacheTest::TestEvictionUnderStress() {
94 #if !UCONFIG_NO_FORMATTING
96 const Locale *locales = DateFormat::getAvailableLocales(localeCount);
97 UErrorCode status = U_ZERO_ERROR;
98 const UnifiedCache *cache = UnifiedCache::getInstance(status);
99 int64_t evictedCountBefore = cache->autoEvictedCount();
100 for (int32_t i = 0; i < localeCount; ++i) {
101 LocalPointer<DateFormat> ptr(DateFormat::createInstanceForSkeleton("yMd", locales[i], status));
103 int64_t evictedCountAfter = cache->autoEvictedCount();
104 if (evictedCountBefore == evictedCountAfter) {
105 dataerrln("%s:%d Items should have been evicted from cache",
108 #endif /* #if !UCONFIG_NO_FORMATTING */
111 void UnifiedCacheTest::TestEvictionPolicy() {
112 UErrorCode status = U_ZERO_ERROR;
114 // We have to call this first or else calling the UnifiedCache
115 // ctor will fail. This is by design to deter clients from using the
116 // cache API incorrectly by creating their own cache instances.
117 UnifiedCache::getInstance(status);
119 // We create our own local UnifiedCache instance to ensure we have
120 // complete control over it. Real clients should never ever create
122 UnifiedCache cache(status);
123 assertSuccess("", status);
125 // Don't allow unused entries to exeed more than 100% of in use entries.
126 cache.setEvictionPolicy(0, 100, status);
128 static const char *locales[] = {
129 "1", "2", "3", "4", "5", "6", "7", "8", "9", "10",
130 "11", "12", "13", "14", "15", "16", "17", "18", "19", "20"};
132 const UCTItem *usedReferences[] = {NULL, NULL, NULL, NULL, NULL};
133 const UCTItem *unusedReference = NULL;
135 // Add 5 in-use entries
136 for (int32_t i = 0; i < UPRV_LENGTHOF(usedReferences); i++) {
138 LocaleCacheKey<UCTItem>(locales[i]),
144 // Add 10 not in use entries.
145 for (int32_t i = 0; i < 10; ++i) {
147 LocaleCacheKey<UCTItem>(
148 locales[i + UPRV_LENGTHOF(usedReferences)]),
153 unusedReference->removeRef();
155 // unused count not to exeed in use count
156 assertEquals("", UPRV_LENGTHOF(usedReferences), cache.unusedCount());
157 assertEquals("", 2*UPRV_LENGTHOF(usedReferences), cache.keyCount());
159 // Free up those used entries.
160 for (int32_t i = 0; i < UPRV_LENGTHOF(usedReferences); i++) {
161 usedReferences[i]->removeRef();
164 // This should free up all cache items
165 assertEquals("", 0, cache.keyCount());
167 assertSuccess("", status);
172 void UnifiedCacheTest::TestBounded() {
173 UErrorCode status = U_ZERO_ERROR;
175 // We have to call this first or else calling the UnifiedCache
176 // ctor will fail. This is by design to deter clients from using the
177 // cache API incorrectly by creating their own cache instances.
178 UnifiedCache::getInstance(status);
180 // We create our own local UnifiedCache instance to ensure we have
181 // complete control over it. Real clients should never ever create
183 UnifiedCache cache(status);
184 assertSuccess("", status);
186 // Maximum unused count is 3.
187 cache.setEvictionPolicy(3, 0, status);
189 // Our cache will hold up to 3 unused key-value pairs
190 // We test the following invariants:
191 // 1. unusedCount <= 3
192 // 2. cache->get(X) always returns the same reference as long as caller
193 // already holds references to that same object.
195 // We first add 5 key-value pairs with two distinct values, "en" and "fr"
196 // keeping all those references.
198 const UCTItem *en = NULL;
199 const UCTItem *enGb = NULL;
200 const UCTItem *enUs = NULL;
201 const UCTItem *fr = NULL;
202 const UCTItem *frFr = NULL;
203 cache.get(LocaleCacheKey<UCTItem>("en_US"), &cache, enUs, status);
204 cache.get(LocaleCacheKey<UCTItem>("en"), &cache, en, status);
205 assertEquals("", 1, cache.unusedCount());
206 cache.get(LocaleCacheKey<UCTItem>("en_GB"), &cache, enGb, status);
207 cache.get(LocaleCacheKey<UCTItem>("fr_FR"), &cache, frFr, status);
208 cache.get(LocaleCacheKey<UCTItem>("fr"), &cache, fr, status);
210 // Client holds two unique references, "en" and "fr" the other three
211 // entries are eligible for eviction.
212 assertEquals("", 3, cache.unusedCount());
213 assertEquals("", 5, cache.keyCount());
215 // Exercise cache more but don't hold the references except for
216 // the last one. At the end of this, we will hold references to one
217 // additional distinct value, so we will have references to 3 distinct
219 const UCTItem *throwAway = NULL;
220 cache.get(LocaleCacheKey<UCTItem>("zn_AA"), &cache, throwAway, status);
221 cache.get(LocaleCacheKey<UCTItem>("sr_AA"), &cache, throwAway, status);
222 cache.get(LocaleCacheKey<UCTItem>("de_AU"), &cache, throwAway, status);
224 const UCTItem *deAu(throwAway);
227 // Client holds three unique references, "en", "fr", "de" although we
228 // could have a total of 8 entries in the cache maxUnusedCount == 3
229 // so we have only 6 entries.
230 assertEquals("", 3, cache.unusedCount());
231 assertEquals("", 6, cache.keyCount());
233 // For all the references we have, cache must continue to return
234 // those same references (#2)
236 cache.get(LocaleCacheKey<UCTItem>("en"), &cache, throwAway, status);
237 if (throwAway != en) {
238 errln("Expected en to resolve to the same object.");
240 cache.get(LocaleCacheKey<UCTItem>("en_US"), &cache, throwAway, status);
241 if (throwAway != enUs) {
242 errln("Expected enUs to resolve to the same object.");
244 cache.get(LocaleCacheKey<UCTItem>("en_GB"), &cache, throwAway, status);
245 if (throwAway != enGb) {
246 errln("Expected enGb to resolve to the same object.");
248 cache.get(LocaleCacheKey<UCTItem>("fr_FR"), &cache, throwAway, status);
249 if (throwAway != frFr) {
250 errln("Expected frFr to resolve to the same object.");
252 cache.get(LocaleCacheKey<UCTItem>("fr_FR"), &cache, throwAway, status);
253 cache.get(LocaleCacheKey<UCTItem>("fr"), &cache, throwAway, status);
254 if (throwAway != fr) {
255 errln("Expected fr to resolve to the same object.");
257 cache.get(LocaleCacheKey<UCTItem>("de_AU"), &cache, throwAway, status);
258 if (throwAway != deAu) {
259 errln("Expected deAu to resolve to the same object.");
262 assertEquals("", 3, cache.unusedCount());
263 assertEquals("", 6, cache.keyCount());
265 // Now we hold a references to two more distinct values. Cache size
267 const UCTItem *es = NULL;
268 const UCTItem *ru = NULL;
269 cache.get(LocaleCacheKey<UCTItem>("es"), &cache, es, status);
270 cache.get(LocaleCacheKey<UCTItem>("ru"), &cache, ru, status);
271 assertEquals("", 3, cache.unusedCount());
272 assertEquals("", 8, cache.keyCount());
274 // Now release all the references we hold except for
276 SharedObject::clearPtr(enGb);
277 SharedObject::clearPtr(enUs);
278 SharedObject::clearPtr(fr);
279 SharedObject::clearPtr(frFr);
280 SharedObject::clearPtr(deAu);
281 SharedObject::clearPtr(es);
282 SharedObject::clearPtr(ru);
283 SharedObject::clearPtr(en);
284 SharedObject::clearPtr(throwAway);
286 // Size of cache should magically drop to 3.
287 assertEquals("", 3, cache.unusedCount());
288 assertEquals("", 3, cache.keyCount());
290 // Be sure nothing happens setting the eviction policy in the middle of
292 cache.setEvictionPolicy(3, 0, status);
293 assertSuccess("", status);
297 void UnifiedCacheTest::TestBasic() {
298 UErrorCode status = U_ZERO_ERROR;
299 const UnifiedCache *cache = UnifiedCache::getInstance(status);
300 assertSuccess("", status);
302 int32_t baseCount = cache->keyCount();
303 const UCTItem *en = NULL;
304 const UCTItem *enGb = NULL;
305 const UCTItem *enGb2 = NULL;
306 const UCTItem *enUs = NULL;
307 const UCTItem *fr = NULL;
308 const UCTItem *frFr = NULL;
309 cache->get(LocaleCacheKey<UCTItem>("en"), en, status);
310 cache->get(LocaleCacheKey<UCTItem>("en_US"), enUs, status);
311 cache->get(LocaleCacheKey<UCTItem>("en_GB"), enGb, status);
312 cache->get(LocaleCacheKey<UCTItem>("fr_FR"), frFr, status);
313 cache->get(LocaleCacheKey<UCTItem>("fr"), fr, status);
314 cache->get(LocaleCacheKey<UCTItem>("en_GB"), enGb2, status);
315 SharedObject::clearPtr(enGb2);
317 errln("Expected en_GB and en_US to resolve to same object.");
320 errln("Expected fr and fr_FR to resolve to same object.");
323 errln("Expected en_GB and fr to return different objects.");
325 assertSuccess("", status);
326 // en_US, en_GB, en share one object; fr_FR and fr don't share.
328 assertEquals("", baseCount + 5, cache->keyCount());
329 SharedObject::clearPtr(enGb);
332 // Only 2 unique values in the cache. flushing trims cache down
333 // to this minimum size.
334 assertEquals("", baseCount + 2, cache->keyCount());
335 SharedObject::clearPtr(enUs);
336 SharedObject::clearPtr(en);
338 // With en_GB and en_US and en cleared there are no more hard references to
339 // the "en" object, so it gets flushed and the keys that refer to it
340 // get removed from the cache. Now we have just one unique value, fr, in
342 assertEquals("", baseCount + 1, cache->keyCount());
343 SharedObject::clearPtr(fr);
345 assertEquals("", baseCount + 1, cache->keyCount());
346 SharedObject::clearPtr(frFr);
348 assertEquals("", baseCount + 0, cache->keyCount());
349 assertSuccess("", status);
352 void UnifiedCacheTest::TestError() {
353 UErrorCode status = U_ZERO_ERROR;
354 const UnifiedCache *cache = UnifiedCache::getInstance(status);
355 assertSuccess("", status);
357 int32_t baseCount = cache->keyCount();
358 const UCTItem *zh = NULL;
359 const UCTItem *zhTw = NULL;
360 const UCTItem *zhHk = NULL;
362 status = U_ZERO_ERROR;
363 cache->get(LocaleCacheKey<UCTItem>("zh"), zh, status);
364 if (status != U_MISSING_RESOURCE_ERROR) {
365 errln("Expected U_MISSING_RESOURCE_ERROR");
367 status = U_ZERO_ERROR;
368 cache->get(LocaleCacheKey<UCTItem>("zh_TW"), zhTw, status);
369 if (status != U_MISSING_RESOURCE_ERROR) {
370 errln("Expected U_MISSING_RESOURCE_ERROR");
372 status = U_ZERO_ERROR;
373 cache->get(LocaleCacheKey<UCTItem>("zh_HK"), zhHk, status);
374 if (status != U_MISSING_RESOURCE_ERROR) {
375 errln("Expected U_MISSING_RESOURCE_ERROR");
377 // 3 keys in cache zh, zhTW, zhHk all pointing to error placeholders
378 assertEquals("", baseCount + 3, cache->keyCount());
380 // error placeholders have no hard references so they always get flushed.
381 assertEquals("", baseCount + 0, cache->keyCount());
384 void UnifiedCacheTest::TestHashEquals() {
385 LocaleCacheKey<UCTItem> key1("en_US");
386 LocaleCacheKey<UCTItem> key2("en_US");
387 LocaleCacheKey<UCTItem> diffKey1("en_UT");
388 LocaleCacheKey<UCTItem2> diffKey2("en_US");
389 assertTrue("", key1.hashCode() == key2.hashCode());
390 assertTrue("", key1.hashCode() != diffKey1.hashCode());
391 assertTrue("", key1.hashCode() != diffKey2.hashCode());
392 assertTrue("", diffKey1.hashCode() != diffKey2.hashCode());
393 assertTrue("", key1 == key2);
394 assertTrue("", key1 != diffKey1);
395 assertTrue("", key1 != diffKey2);
396 assertTrue("", diffKey1 != diffKey2);
399 extern IntlTest *createUnifiedCacheTest() {
400 return new UnifiedCacheTest();