Function near_bindgen::env::set_blockchain_interface

pub fn set_blockchain_interface(
    blockchain_interface: Box<dyn BlockchainInterface>
)

Replaces the current low-level blockchain interface accessible through env::* with another low-level blockchain interfacr that implements BlockchainInterface trait. In most cases you want to use testing_env! macro to set it.

let mocked_blockchain = near_bindgen::MockedBlockchain::new(
          context,
          vm_config,
          fees_config,
          vec![],
          storage,
      );
near_bindgen::env::set_blockchain_interface(Box::new(mocked_blockchain));