Struct solana_libra_language_e2e_tests::data_store::FakeDataStore

pub struct FakeDataStore { /* fields omitted */ }

An in-memory implementation of [StateView] and [RemoteCache] for the VM.

Tests use this to set up state, and pass in a reference to the cache whenever a StateView or RemoteCache is needed.

Methods

impl FakeDataStore

pub fn new(data: HashMap<AccessPath, Vec<u8>>) -> Self

Creates a new FakeDataStore with the provided initial data.

pub fn add_write_set(&mut self, write_set: &WriteSet)

Adds a [WriteSet] to this data store.

pub fn set(
    &mut self,
    access_path: AccessPath,
    data_blob: Vec<u8>
) -> Option<Vec<u8>>

Sets a (key, value) pair within this data store.

Returns the previous data if the key was occupied.

pub fn remove(&mut self, access_path: &AccessPath) -> Option<Vec<u8>>

Deletes a key from this data store.

Returns the previous data if the key was occupied.

pub fn add_account_data(&mut self, account_data: &AccountData)

Adds an AccountData to this data store.

pub fn add_module(&mut self, module_id: &ModuleId, module: &CompiledModule)

Adds a [CompiledModule] to this data store.

Does not do any sort of verification on the module.

Trait Implementations

impl Default for FakeDataStore

fn default() -> FakeDataStore

Returns the "default value" for a type.

impl Debug for FakeDataStore

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl StateView for FakeDataStore

fn get(&self, access_path: &AccessPath) -> Result<Option<Vec<u8>>>

Gets the state for a single access path.

fn multi_get(
    &self,
    _access_paths: &[AccessPath]
) -> Result<Vec<Option<Vec<u8>>>>

Gets states for a list of access paths.

fn is_genesis(&self) -> bool

VM needs this method to know whether the current state view is for genesis state creation. Currently TransactionPayload::WriteSet is only valid for genesis state creation.

impl RemoteCache for FakeDataStore

fn get(
    &self,
    access_path: &AccessPath
) -> Result<Option<Vec<u8>>, VMInvariantViolation>