Struct TestOracle 

pub struct TestOracle {
    pub writes: BTreeMap<WriteId, AppliedWrite>,
}

An oracle of applied metadata that tests may populate from streamed records.

Fields

writes: BTreeMap<WriteId, AppliedWrite>

Metadata indexed by merge’s write identity; no write bodies are reconstructed.

Trait Implementations

impl Clone for TestOracle

fn clone(&self) -> TestOracle

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl WriteOracle for TestOracle

type Error = Error

Reading the metadata failed, or a merge check on it did.

fn timestamp(&self, id: WriteId) -> Result<Option<Timestamp>, Error>

The timestamp of an applied write, or None if it is not applied.

fn had_read(&self, reader: WriteId, earlier: WriteId) -> Result<bool, Error>

Whether an applied write had read another write.

impl WriteSlots for TestOracle

fn slot(&self, write: WriteId) -> Result<Option<Slot>, Error>

Containing slot, or absence when no authenticated metadata establishes it.

fn landed(&self, write: WriteId) -> Result<bool, Error>

Whether the metadata holds a write of write’s device numbered at or above it. A device’s writes land in the order it numbered them, so write landed at or before that write’s slot (coven.md §16.7).