Function substrate_cli_test_utils::start_node

pub fn start_node() -> Child

Starts a new Substrate node in development mode with a temporary chain.

This function creates a new Substrate node using the substrate binary. It configures the node to run in development mode (--dev) with a temporary chain (--tmp), sets the WebSocket port to 45789 (--ws-port=45789).

Returns

A Child process representing the spawned Substrate node.

Panics

This function will panic if the substrate binary is not found or if the node fails to start.

Examples

use my_crate::start_node;

let child = start_node();
// Interact with the Substrate node using the WebSocket port 45789.
// When done, the node will be killed when the `child` is dropped.