Trait era_test_node::namespaces::EvmNamespaceT

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pub trait EvmNamespaceT: Sized + Send + Sync + 'static {
    // Required methods
    fn increase_time(&self, time_delta_seconds: u64) -> RpcResult<u64>;
    fn evm_mine(&self) -> RpcResult<String>;
    fn set_next_block_timestamp(&self, timestamp: u64) -> RpcResult<u64>;
    fn set_time(&self, time: u64) -> RpcResult<i128>;
    fn snapshot(&self) -> RpcResult<U64>;
    fn revert_snapshot(&self, snapshot_id: U64) -> RpcResult<bool>;

    // Provided method
    fn to_delegate<M: Metadata>(self) -> IoDelegate<Self, M> { ... }
}

Required Methods§

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fn increase_time(&self, time_delta_seconds: u64) -> RpcResult<u64>

Increase the current timestamp for the node

Parameters

time_delta: The number of seconds to increase time by

Returns

The applied time delta to current_timestamp value for the InMemoryNodeInner.

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fn evm_mine(&self) -> RpcResult<String>

Force a single block to be mined.

Will mine an empty block (containing zero transactions)

fn set_next_block_timestamp(&self, timestamp: u64) -> RpcResult<u64>

Set the current timestamp for the node. The timestamp must be in future.

Parameters

timestamp: The timestamp to set the time to

Returns

The new timestamp value for the InMemoryNodeInner.

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fn set_time(&self, time: u64) -> RpcResult<i128>

Set the current timestamp for the node. Warning: This will allow you to move backwards in time, which may cause new blocks to appear to be mined before old blocks. This will result in an invalid state.

Parameters

time: The timestamp to set the time to

Returns

The difference between the current_timestamp and the new timestamp for the InMemoryNodeInner.

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fn snapshot(&self) -> RpcResult<U64>

Snapshot the state of the blockchain at the current block. Takes no parameters. Returns the id of the snapshot that was created. A snapshot can only be reverted once. After a successful evm_revert, the same snapshot id cannot be used again. Consider creating a new snapshot after each evm_revert if you need to revert to the same point multiple times.

Returns

The U64 identifier for this snapshot.

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fn revert_snapshot(&self, snapshot_id: U64) -> RpcResult<bool>

Revert the state of the blockchain to a previous snapshot. Takes a single parameter, which is the snapshot id to revert to. This deletes the given snapshot, as well as any snapshots taken after (e.g.: reverting to id 0x1 will delete snapshots with ids 0x1, 0x2, etc.)