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add one more test case for consolidate, both are negative

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This commit is contained in:
Guanqun Lu 2017-05-31 01:06:25 +08:00
parent ce8f8f40d7
commit 1efa7e7b10
1 changed files with 6 additions and 0 deletions
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6
util/src/memorydb.rs
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@ -290,11 +290,17 @@ mod tests {
let insert_key = other.insert(b"arf"); let insert_key = other.insert(b"arf");
main.emplace(insert_key, DBValue::from_slice(b"arf")); main.emplace(insert_key, DBValue::from_slice(b"arf"));
let negative_remove_key = other.insert(b"negative");
other.remove(&negative_remove_key); // ref cnt: 0
other.remove(&negative_remove_key); // ref cnt: -1
main.remove(&negative_remove_key); // ref cnt: -1
main.consolidate(other); main.consolidate(other);
let overlay = main.drain(); let overlay = main.drain();
assert_eq!(overlay.get(&remove_key).unwrap(), &(DBValue::from_slice(b"doggo"), 0)); assert_eq!(overlay.get(&remove_key).unwrap(), &(DBValue::from_slice(b"doggo"), 0));
assert_eq!(overlay.get(&insert_key).unwrap(), &(DBValue::from_slice(b"arf"), 2)); assert_eq!(overlay.get(&insert_key).unwrap(), &(DBValue::from_slice(b"arf"), 2));
assert_eq!(overlay.get(&negative_remove_key).unwrap(), &(DBValue::from_slice(b"negative"), -2));
} }
} }