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Diffstat (limited to 'libs/utils/tests/BlobCache_test.cpp')
-rw-r--r-- | libs/utils/tests/BlobCache_test.cpp | 421 |
1 files changed, 0 insertions, 421 deletions
diff --git a/libs/utils/tests/BlobCache_test.cpp b/libs/utils/tests/BlobCache_test.cpp deleted file mode 100644 index b64cc39..0000000 --- a/libs/utils/tests/BlobCache_test.cpp +++ /dev/null @@ -1,421 +0,0 @@ -/* - ** Copyright 2011, 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. - */ - -#include <fcntl.h> -#include <stdio.h> - -#include <gtest/gtest.h> - -#include <utils/BlobCache.h> -#include <utils/Errors.h> - -namespace android { - -class BlobCacheTest : public ::testing::Test { -protected: - enum { - MAX_KEY_SIZE = 6, - MAX_VALUE_SIZE = 8, - MAX_TOTAL_SIZE = 13, - }; - - virtual void SetUp() { - mBC = new BlobCache(MAX_KEY_SIZE, MAX_VALUE_SIZE, MAX_TOTAL_SIZE); - } - - virtual void TearDown() { - mBC.clear(); - } - - sp<BlobCache> mBC; -}; - -TEST_F(BlobCacheTest, CacheSingleValueSucceeds) { - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - ASSERT_EQ(size_t(4), mBC->get("abcd", 4, buf, 4)); - ASSERT_EQ('e', buf[0]); - ASSERT_EQ('f', buf[1]); - ASSERT_EQ('g', buf[2]); - ASSERT_EQ('h', buf[3]); -} - -TEST_F(BlobCacheTest, CacheTwoValuesSucceeds) { - char buf[2] = { 0xee, 0xee }; - mBC->set("ab", 2, "cd", 2); - mBC->set("ef", 2, "gh", 2); - ASSERT_EQ(size_t(2), mBC->get("ab", 2, buf, 2)); - ASSERT_EQ('c', buf[0]); - ASSERT_EQ('d', buf[1]); - ASSERT_EQ(size_t(2), mBC->get("ef", 2, buf, 2)); - ASSERT_EQ('g', buf[0]); - ASSERT_EQ('h', buf[1]); -} - -TEST_F(BlobCacheTest, GetOnlyWritesInsideBounds) { - char buf[6] = { 0xee, 0xee, 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - ASSERT_EQ(size_t(4), mBC->get("abcd", 4, buf+1, 4)); - ASSERT_EQ(0xee, buf[0]); - ASSERT_EQ('e', buf[1]); - ASSERT_EQ('f', buf[2]); - ASSERT_EQ('g', buf[3]); - ASSERT_EQ('h', buf[4]); - ASSERT_EQ(0xee, buf[5]); -} - -TEST_F(BlobCacheTest, GetOnlyWritesIfBufferIsLargeEnough) { - char buf[3] = { 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - ASSERT_EQ(size_t(4), mBC->get("abcd", 4, buf, 3)); - ASSERT_EQ(0xee, buf[0]); - ASSERT_EQ(0xee, buf[1]); - ASSERT_EQ(0xee, buf[2]); -} - -TEST_F(BlobCacheTest, GetDoesntAccessNullBuffer) { - mBC->set("abcd", 4, "efgh", 4); - ASSERT_EQ(size_t(4), mBC->get("abcd", 4, NULL, 0)); -} - -TEST_F(BlobCacheTest, MultipleSetsCacheLatestValue) { - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - mBC->set("abcd", 4, "ijkl", 4); - ASSERT_EQ(size_t(4), mBC->get("abcd", 4, buf, 4)); - ASSERT_EQ('i', buf[0]); - ASSERT_EQ('j', buf[1]); - ASSERT_EQ('k', buf[2]); - ASSERT_EQ('l', buf[3]); -} - -TEST_F(BlobCacheTest, SecondSetKeepsFirstValueIfTooLarge) { - char buf[MAX_VALUE_SIZE+1] = { 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - mBC->set("abcd", 4, buf, MAX_VALUE_SIZE+1); - ASSERT_EQ(size_t(4), mBC->get("abcd", 4, buf, 4)); - ASSERT_EQ('e', buf[0]); - ASSERT_EQ('f', buf[1]); - ASSERT_EQ('g', buf[2]); - ASSERT_EQ('h', buf[3]); -} - -TEST_F(BlobCacheTest, DoesntCacheIfKeyIsTooBig) { - char key[MAX_KEY_SIZE+1]; - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - for (int i = 0; i < MAX_KEY_SIZE+1; i++) { - key[i] = 'a'; - } - mBC->set(key, MAX_KEY_SIZE+1, "bbbb", 4); - ASSERT_EQ(size_t(0), mBC->get(key, MAX_KEY_SIZE+1, buf, 4)); - ASSERT_EQ(0xee, buf[0]); - ASSERT_EQ(0xee, buf[1]); - ASSERT_EQ(0xee, buf[2]); - ASSERT_EQ(0xee, buf[3]); -} - -TEST_F(BlobCacheTest, DoesntCacheIfValueIsTooBig) { - char buf[MAX_VALUE_SIZE+1]; - for (int i = 0; i < MAX_VALUE_SIZE+1; i++) { - buf[i] = 'b'; - } - mBC->set("abcd", 4, buf, MAX_VALUE_SIZE+1); - for (int i = 0; i < MAX_VALUE_SIZE+1; i++) { - buf[i] = 0xee; - } - ASSERT_EQ(size_t(0), mBC->get("abcd", 4, buf, MAX_VALUE_SIZE+1)); - for (int i = 0; i < MAX_VALUE_SIZE+1; i++) { - SCOPED_TRACE(i); - ASSERT_EQ(0xee, buf[i]); - } -} - -TEST_F(BlobCacheTest, DoesntCacheIfKeyValuePairIsTooBig) { - // Check a testing assumptions - ASSERT_TRUE(MAX_TOTAL_SIZE < MAX_KEY_SIZE + MAX_VALUE_SIZE); - ASSERT_TRUE(MAX_KEY_SIZE < MAX_TOTAL_SIZE); - - enum { bufSize = MAX_TOTAL_SIZE - MAX_KEY_SIZE + 1 }; - - char key[MAX_KEY_SIZE]; - char buf[bufSize]; - for (int i = 0; i < MAX_KEY_SIZE; i++) { - key[i] = 'a'; - } - for (int i = 0; i < bufSize; i++) { - buf[i] = 'b'; - } - - mBC->set(key, MAX_KEY_SIZE, buf, MAX_VALUE_SIZE); - ASSERT_EQ(size_t(0), mBC->get(key, MAX_KEY_SIZE, NULL, 0)); -} - -TEST_F(BlobCacheTest, CacheMaxKeySizeSucceeds) { - char key[MAX_KEY_SIZE]; - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - for (int i = 0; i < MAX_KEY_SIZE; i++) { - key[i] = 'a'; - } - mBC->set(key, MAX_KEY_SIZE, "wxyz", 4); - ASSERT_EQ(size_t(4), mBC->get(key, MAX_KEY_SIZE, buf, 4)); - ASSERT_EQ('w', buf[0]); - ASSERT_EQ('x', buf[1]); - ASSERT_EQ('y', buf[2]); - ASSERT_EQ('z', buf[3]); -} - -TEST_F(BlobCacheTest, CacheMaxValueSizeSucceeds) { - char buf[MAX_VALUE_SIZE]; - for (int i = 0; i < MAX_VALUE_SIZE; i++) { - buf[i] = 'b'; - } - mBC->set("abcd", 4, buf, MAX_VALUE_SIZE); - for (int i = 0; i < MAX_VALUE_SIZE; i++) { - buf[i] = 0xee; - } - ASSERT_EQ(size_t(MAX_VALUE_SIZE), mBC->get("abcd", 4, buf, - MAX_VALUE_SIZE)); - for (int i = 0; i < MAX_VALUE_SIZE; i++) { - SCOPED_TRACE(i); - ASSERT_EQ('b', buf[i]); - } -} - -TEST_F(BlobCacheTest, CacheMaxKeyValuePairSizeSucceeds) { - // Check a testing assumption - ASSERT_TRUE(MAX_KEY_SIZE < MAX_TOTAL_SIZE); - - enum { bufSize = MAX_TOTAL_SIZE - MAX_KEY_SIZE }; - - char key[MAX_KEY_SIZE]; - char buf[bufSize]; - for (int i = 0; i < MAX_KEY_SIZE; i++) { - key[i] = 'a'; - } - for (int i = 0; i < bufSize; i++) { - buf[i] = 'b'; - } - - mBC->set(key, MAX_KEY_SIZE, buf, bufSize); - ASSERT_EQ(size_t(bufSize), mBC->get(key, MAX_KEY_SIZE, NULL, 0)); -} - -TEST_F(BlobCacheTest, CacheMinKeyAndValueSizeSucceeds) { - char buf[1] = { 0xee }; - mBC->set("x", 1, "y", 1); - ASSERT_EQ(size_t(1), mBC->get("x", 1, buf, 1)); - ASSERT_EQ('y', buf[0]); -} - -TEST_F(BlobCacheTest, CacheSizeDoesntExceedTotalLimit) { - for (int i = 0; i < 256; i++) { - uint8_t k = i; - mBC->set(&k, 1, "x", 1); - } - int numCached = 0; - for (int i = 0; i < 256; i++) { - uint8_t k = i; - if (mBC->get(&k, 1, NULL, 0) == 1) { - numCached++; - } - } - ASSERT_GE(MAX_TOTAL_SIZE / 2, numCached); -} - -TEST_F(BlobCacheTest, ExceedingTotalLimitHalvesCacheSize) { - // Fill up the entire cache with 1 char key/value pairs. - const int maxEntries = MAX_TOTAL_SIZE / 2; - for (int i = 0; i < maxEntries; i++) { - uint8_t k = i; - mBC->set(&k, 1, "x", 1); - } - // Insert one more entry, causing a cache overflow. - { - uint8_t k = maxEntries; - mBC->set(&k, 1, "x", 1); - } - // Count the number of entries in the cache. - int numCached = 0; - for (int i = 0; i < maxEntries+1; i++) { - uint8_t k = i; - if (mBC->get(&k, 1, NULL, 0) == 1) { - numCached++; - } - } - ASSERT_EQ(maxEntries/2 + 1, numCached); -} - -class BlobCacheFlattenTest : public BlobCacheTest { -protected: - virtual void SetUp() { - BlobCacheTest::SetUp(); - mBC2 = new BlobCache(MAX_KEY_SIZE, MAX_VALUE_SIZE, MAX_TOTAL_SIZE); - } - - virtual void TearDown() { - mBC2.clear(); - BlobCacheTest::TearDown(); - } - - void roundTrip() { - size_t size = mBC->getFlattenedSize(); - uint8_t* flat = new uint8_t[size]; - ASSERT_EQ(OK, mBC->flatten(flat, size, NULL, 0)); - ASSERT_EQ(OK, mBC2->unflatten(flat, size, NULL, 0)); - delete[] flat; - } - - sp<BlobCache> mBC2; -}; - -TEST_F(BlobCacheFlattenTest, FlattenOneValue) { - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - roundTrip(); - ASSERT_EQ(size_t(4), mBC2->get("abcd", 4, buf, 4)); - ASSERT_EQ('e', buf[0]); - ASSERT_EQ('f', buf[1]); - ASSERT_EQ('g', buf[2]); - ASSERT_EQ('h', buf[3]); -} - -TEST_F(BlobCacheFlattenTest, FlattenFullCache) { - // Fill up the entire cache with 1 char key/value pairs. - const int maxEntries = MAX_TOTAL_SIZE / 2; - for (int i = 0; i < maxEntries; i++) { - uint8_t k = i; - mBC->set(&k, 1, &k, 1); - } - - roundTrip(); - - // Verify the deserialized cache - for (int i = 0; i < maxEntries; i++) { - uint8_t k = i; - uint8_t v = 0xee; - ASSERT_EQ(size_t(1), mBC2->get(&k, 1, &v, 1)); - ASSERT_EQ(k, v); - } -} - -TEST_F(BlobCacheFlattenTest, FlattenDoesntChangeCache) { - // Fill up the entire cache with 1 char key/value pairs. - const int maxEntries = MAX_TOTAL_SIZE / 2; - for (int i = 0; i < maxEntries; i++) { - uint8_t k = i; - mBC->set(&k, 1, &k, 1); - } - - size_t size = mBC->getFlattenedSize(); - uint8_t* flat = new uint8_t[size]; - ASSERT_EQ(OK, mBC->flatten(flat, size, NULL, 0)); - delete[] flat; - - // Verify the cache that we just serialized - for (int i = 0; i < maxEntries; i++) { - uint8_t k = i; - uint8_t v = 0xee; - ASSERT_EQ(size_t(1), mBC->get(&k, 1, &v, 1)); - ASSERT_EQ(k, v); - } -} - -TEST_F(BlobCacheFlattenTest, FlattenCatchesBufferTooSmall) { - // Fill up the entire cache with 1 char key/value pairs. - const int maxEntries = MAX_TOTAL_SIZE / 2; - for (int i = 0; i < maxEntries; i++) { - uint8_t k = i; - mBC->set(&k, 1, &k, 1); - } - - size_t size = mBC->getFlattenedSize() - 1; - uint8_t* flat = new uint8_t[size]; - ASSERT_EQ(BAD_VALUE, mBC->flatten(flat, size, NULL, 0)); - delete[] flat; -} - -TEST_F(BlobCacheFlattenTest, UnflattenCatchesBadMagic) { - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - - size_t size = mBC->getFlattenedSize(); - uint8_t* flat = new uint8_t[size]; - ASSERT_EQ(OK, mBC->flatten(flat, size, NULL, 0)); - flat[1] = ~flat[1]; - - // Bad magic should cause an error. - ASSERT_EQ(BAD_VALUE, mBC2->unflatten(flat, size, NULL, 0)); - delete[] flat; - - // The error should cause the unflatten to result in an empty cache - ASSERT_EQ(size_t(0), mBC2->get("abcd", 4, buf, 4)); -} - -TEST_F(BlobCacheFlattenTest, UnflattenCatchesBadBlobCacheVersion) { - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - - size_t size = mBC->getFlattenedSize(); - uint8_t* flat = new uint8_t[size]; - ASSERT_EQ(OK, mBC->flatten(flat, size, NULL, 0)); - flat[5] = ~flat[5]; - - // Version mismatches shouldn't cause errors, but should not use the - // serialized entries - ASSERT_EQ(OK, mBC2->unflatten(flat, size, NULL, 0)); - delete[] flat; - - // The version mismatch should cause the unflatten to result in an empty - // cache - ASSERT_EQ(size_t(0), mBC2->get("abcd", 4, buf, 4)); -} - -TEST_F(BlobCacheFlattenTest, UnflattenCatchesBadBlobCacheDeviceVersion) { - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - - size_t size = mBC->getFlattenedSize(); - uint8_t* flat = new uint8_t[size]; - ASSERT_EQ(OK, mBC->flatten(flat, size, NULL, 0)); - flat[10] = ~flat[10]; - - // Version mismatches shouldn't cause errors, but should not use the - // serialized entries - ASSERT_EQ(OK, mBC2->unflatten(flat, size, NULL, 0)); - delete[] flat; - - // The version mismatch should cause the unflatten to result in an empty - // cache - ASSERT_EQ(size_t(0), mBC2->get("abcd", 4, buf, 4)); -} - -TEST_F(BlobCacheFlattenTest, UnflattenCatchesBufferTooSmall) { - char buf[4] = { 0xee, 0xee, 0xee, 0xee }; - mBC->set("abcd", 4, "efgh", 4); - - size_t size = mBC->getFlattenedSize(); - uint8_t* flat = new uint8_t[size]; - ASSERT_EQ(OK, mBC->flatten(flat, size, NULL, 0)); - - // A buffer truncation shouldt cause an error - ASSERT_EQ(BAD_VALUE, mBC2->unflatten(flat, size-1, NULL, 0)); - delete[] flat; - - // The error should cause the unflatten to result in an empty cache - ASSERT_EQ(size_t(0), mBC2->get("abcd", 4, buf, 4)); -} - -} // namespace android |