Struct cfx_storage::tests::FakeDbForStateTest

pub struct FakeDbForStateTest {}

Trait Implementations

impl Default for FakeDbForStateTest

fn default() -> FakeDbForStateTest

Returns the “default value” for a type.

impl KeyValueDB for FakeDbForStateTest

fn write_buffered(&self, _transaction: DBTransaction)

No-op

fn flush(&self) -> Result<()>

No-op

fn get(&self, _col: u32, _key: &[u8]) -> Result<Option<DBValue>>

Get a value by key.

fn get_by_prefix(&self, _col: u32, _prefix: &[u8]) -> Option<Box<[u8]>>

Get a value by partial key. Only works for flushed data.

fn iter<'a>( &'a self, _col: u32 ) -> Box<dyn Iterator<Item = (Box<[u8]>, Box<[u8]>)>>

Iterate over flushed data for a given column.

fn iter_from_prefix<'a>( &'a self, _col: u32, _prefix: &'a [u8] ) -> Box<dyn Iterator<Item = (Box<[u8]>, Box<[u8]>)>>

Iterate over flushed data for a given column, starting from a given prefix.

fn restore(&self, _new_db: &str) -> Result<()>

Attempt to replace this database with a new one located at the given path.

fn transaction(&self) -> DBTransaction

Helper to create a new transaction.

fn write(&self, transaction: DBTransaction) -> Result<(), Error>

Write a transaction of changes to the backing store.

fn io_stats(&self, _kind: Kind) -> IoStats

Query statistics.

impl MallocSizeOf for FakeDbForStateTest

fn size_of(&self, _ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.