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| author | Pieter Wuille <[email protected]> | 2016-12-01 16:14:45 -0800 |
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| committer | Pieter Wuille <[email protected]> | 2016-12-01 16:14:45 -0800 |
| commit | 605d701471c3ee84682b0c149e41142d7cea95e7 (patch) | |
| tree | 7a6af0e78ee2202f510686e9a3561c28829b8a4b /src/leveldb/table/table_test.cc | |
| parent | Merge #9183: Final Preparation for main.cpp Split (diff) | |
| parent | Squashed 'src/leveldb/' changes from 20ca81f..a31c8aa (diff) | |
| download | discoin-605d701471c3ee84682b0c149e41142d7cea95e7.tar.xz discoin-605d701471c3ee84682b0c149e41142d7cea95e7.zip | |
Merge in LevelDB 1.19 changes
Diffstat (limited to 'src/leveldb/table/table_test.cc')
| -rw-r--r-- | src/leveldb/table/table_test.cc | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/src/leveldb/table/table_test.cc b/src/leveldb/table/table_test.cc index c723bf84c..abf6e246f 100644 --- a/src/leveldb/table/table_test.cc +++ b/src/leveldb/table/table_test.cc @@ -853,12 +853,20 @@ TEST(TableTest, ApproximateOffsetOfCompressed) { options.compression = kSnappyCompression; c.Finish(options, &keys, &kvmap); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("abc"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k01"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k02"), 0, 0)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k03"), 2000, 3000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("k04"), 2000, 3000)); - ASSERT_TRUE(Between(c.ApproximateOffsetOf("xyz"), 4000, 6000)); + // Expected upper and lower bounds of space used by compressible strings. + static const int kSlop = 1000; // Compressor effectiveness varies. + const int expected = 2500; // 10000 * compression ratio (0.25) + const int min_z = expected - kSlop; + const int max_z = expected + kSlop; + + ASSERT_TRUE(Between(c.ApproximateOffsetOf("abc"), 0, kSlop)); + ASSERT_TRUE(Between(c.ApproximateOffsetOf("k01"), 0, kSlop)); + ASSERT_TRUE(Between(c.ApproximateOffsetOf("k02"), 0, kSlop)); + // Have now emitted a large compressible string, so adjust expected offset. + ASSERT_TRUE(Between(c.ApproximateOffsetOf("k03"), min_z, max_z)); + ASSERT_TRUE(Between(c.ApproximateOffsetOf("k04"), min_z, max_z)); + // Have now emitted two large compressible strings, so adjust expected offset. + ASSERT_TRUE(Between(c.ApproximateOffsetOf("xyz"), 2 * min_z, 2 * max_z)); } } // namespace leveldb |