Struct sp_state_machine::TestExternalities

pub struct TestExternalities<H: Hasher<Out = H256> = Blake2Hasher, N: ChangesTrieBlockNumber = u64> { /* fields omitted */ }

Simple HashMap-based Externalities impl.

Methods

impl<H: Hasher<Out = H256>, N: ChangesTrieBlockNumber> TestExternalities<H, N>

pub fn ext(
    &mut self
) -> Ext<H, N, InMemory<H>, ChangesTrieInMemoryStorage<H, N>>

Get externalities implementation.

pub fn new(storage: Storage) -> Self

Create a new instance of TestExternalities with storage.

pub fn new_with_code(code: &[u8], storage: Storage) -> Self

Create a new instance of TestExternalities with code and storage.

pub fn insert(&mut self, k: Vec<u8>, v: Vec<u8>)

Insert key/value into backend

pub fn register_extension<E: Any + Extension>(&mut self, ext: E)

Registers the given extension for this instance.

pub fn changes_trie_storage(&mut self) -> &mut ChangesTrieInMemoryStorage<H, N>

Get mutable reference to changes trie storage.

pub fn commit_all(&self) -> InMemory<H>

Return a new backend with all pending value.

pub fn execute_with<R>(&mut self, execute: impl FnOnce() -> R) -> R

Execute the given closure while self is set as externalities.

Returns the result of the given closure.

Trait Implementations

impl<H: Hasher<Out = H256>, N: ChangesTrieBlockNumber> Debug for TestExternalities<H, N>

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

Formats the value using the given formatter.

impl<H: Hasher<Out = H256>, N: ChangesTrieBlockNumber> Default for TestExternalities<H, N>

fn default() -> Self

Returns the "default value" for a type.

impl<H, N> ExtensionStore for TestExternalities<H, N> where
    H: Hasher<Out = H256>,
    N: ChangesTrieBlockNumber, 

fn extension_by_type_id(&mut self, type_id: TypeId) -> Option<&mut dyn Any>

Tries to find a registered extension by the given type_id and returns it as a &mut dyn Any.

impl<H: Hasher<Out = H256>, N: ChangesTrieBlockNumber> From<Storage> for TestExternalities<H, N>

fn from(storage: Storage) -> Self

Performs the conversion.

impl<H: Hasher<Out = H256>, N: ChangesTrieBlockNumber> PartialEq<TestExternalities<H, N>> for TestExternalities<H, N>

fn eq(&self, other: &TestExternalities<H, N>) -> bool

This doesn't test if they are in the same state, only if they contains the same data at this state

#[must_use] fn ne(&self, other: &Rhs) -> bool

This method tests for !=.