exonum-testkit 0.1.1

extern crate exonum;
extern crate exonum_testkit;
extern crate serde;
extern crate serde_json;

use exonum::helpers::{Height, ValidatorId};
use exonum_testkit::TestKitBuilder;
use exonum::blockchain::Schema;
use exonum::storage::StorageValue;

fn main() {
    let mut testkit = TestKitBuilder::auditor().with_validators(3).create();

    let cfg_change_height = Height(5);
    let proposal = {
        let mut cfg = testkit.configuration_change_proposal();
        // Add us to validators.
        let mut validators = cfg.validators().to_vec();
        validators.push(testkit.network().us().clone());
        cfg.set_validators(validators);
        // Change configuration of our service.
        cfg.set_service_config("my_service", "My config");
        // Set the height with which the configuration takes effect.
        cfg.set_actual_from(cfg_change_height);
        cfg
    };
    // Save proposed configuration.
    let stored = proposal.stored_configuration().clone();
    // Commit configuration change proposal to the testkit.
    testkit.commit_configuration_change(proposal);
    // Create blocks up to the height preceding the `actual_from` height.
    testkit.create_blocks_until(cfg_change_height.previous());
    // Check that the proposal has become actual.
    assert_eq!(testkit.network().us().validator_id(), Some(ValidatorId(3)));
    assert_eq!(testkit.validator(ValidatorId(3)), testkit.network().us());
    assert_eq!(testkit.actual_configuration(), stored);
    assert_eq!(
        Schema::new(&testkit.snapshot())
            .previous_configuration()
            .unwrap()
            .hash(),
        stored.previous_cfg_hash
    );
}