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Diffstat (limited to 'src/leveldb/table/filter_block_test.cc')
-rw-r--r-- | src/leveldb/table/filter_block_test.cc | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/src/leveldb/table/filter_block_test.cc b/src/leveldb/table/filter_block_test.cc deleted file mode 100644 index 3a2a07cf5..000000000 --- a/src/leveldb/table/filter_block_test.cc +++ /dev/null @@ -1,128 +0,0 @@ -// Copyright (c) 2012 The LevelDB Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. See the AUTHORS file for names of contributors. - -#include "table/filter_block.h" - -#include "leveldb/filter_policy.h" -#include "util/coding.h" -#include "util/hash.h" -#include "util/logging.h" -#include "util/testharness.h" -#include "util/testutil.h" - -namespace leveldb { - -// For testing: emit an array with one hash value per key -class TestHashFilter : public FilterPolicy { - public: - virtual const char* Name() const { - return "TestHashFilter"; - } - - virtual void CreateFilter(const Slice* keys, int n, std::string* dst) const { - for (int i = 0; i < n; i++) { - uint32_t h = Hash(keys[i].data(), keys[i].size(), 1); - PutFixed32(dst, h); - } - } - - virtual bool KeyMayMatch(const Slice& key, const Slice& filter) const { - uint32_t h = Hash(key.data(), key.size(), 1); - for (int i = 0; i + 4 <= filter.size(); i += 4) { - if (h == DecodeFixed32(filter.data() + i)) { - return true; - } - } - return false; - } -}; - -class FilterBlockTest { - public: - TestHashFilter policy_; -}; - -TEST(FilterBlockTest, EmptyBuilder) { - FilterBlockBuilder builder(&policy_); - Slice block = builder.Finish(); - ASSERT_EQ("\\x00\\x00\\x00\\x00\\x0b", EscapeString(block)); - FilterBlockReader reader(&policy_, block); - ASSERT_TRUE(reader.KeyMayMatch(0, "foo")); - ASSERT_TRUE(reader.KeyMayMatch(100000, "foo")); -} - -TEST(FilterBlockTest, SingleChunk) { - FilterBlockBuilder builder(&policy_); - builder.StartBlock(100); - builder.AddKey("foo"); - builder.AddKey("bar"); - builder.AddKey("box"); - builder.StartBlock(200); - builder.AddKey("box"); - builder.StartBlock(300); - builder.AddKey("hello"); - Slice block = builder.Finish(); - FilterBlockReader reader(&policy_, block); - ASSERT_TRUE(reader.KeyMayMatch(100, "foo")); - ASSERT_TRUE(reader.KeyMayMatch(100, "bar")); - ASSERT_TRUE(reader.KeyMayMatch(100, "box")); - ASSERT_TRUE(reader.KeyMayMatch(100, "hello")); - ASSERT_TRUE(reader.KeyMayMatch(100, "foo")); - ASSERT_TRUE(! reader.KeyMayMatch(100, "missing")); - ASSERT_TRUE(! reader.KeyMayMatch(100, "other")); -} - -TEST(FilterBlockTest, MultiChunk) { - FilterBlockBuilder builder(&policy_); - - // First filter - builder.StartBlock(0); - builder.AddKey("foo"); - builder.StartBlock(2000); - builder.AddKey("bar"); - - // Second filter - builder.StartBlock(3100); - builder.AddKey("box"); - - // Third filter is empty - - // Last filter - builder.StartBlock(9000); - builder.AddKey("box"); - builder.AddKey("hello"); - - Slice block = builder.Finish(); - FilterBlockReader reader(&policy_, block); - - // Check first filter - ASSERT_TRUE(reader.KeyMayMatch(0, "foo")); - ASSERT_TRUE(reader.KeyMayMatch(2000, "bar")); - ASSERT_TRUE(! reader.KeyMayMatch(0, "box")); - ASSERT_TRUE(! reader.KeyMayMatch(0, "hello")); - - // Check second filter - ASSERT_TRUE(reader.KeyMayMatch(3100, "box")); - ASSERT_TRUE(! reader.KeyMayMatch(3100, "foo")); - ASSERT_TRUE(! reader.KeyMayMatch(3100, "bar")); - ASSERT_TRUE(! reader.KeyMayMatch(3100, "hello")); - - // Check third filter (empty) - ASSERT_TRUE(! reader.KeyMayMatch(4100, "foo")); - ASSERT_TRUE(! reader.KeyMayMatch(4100, "bar")); - ASSERT_TRUE(! reader.KeyMayMatch(4100, "box")); - ASSERT_TRUE(! reader.KeyMayMatch(4100, "hello")); - - // Check last filter - ASSERT_TRUE(reader.KeyMayMatch(9000, "box")); - ASSERT_TRUE(reader.KeyMayMatch(9000, "hello")); - ASSERT_TRUE(! reader.KeyMayMatch(9000, "foo")); - ASSERT_TRUE(! reader.KeyMayMatch(9000, "bar")); -} - -} // namespace leveldb - -int main(int argc, char** argv) { - return leveldb::test::RunAllTests(); -} |