Docs don't say how to specify the caller

[ryancwalsh]

I've spent a long time looking through docs here and elsewhere and can't find how to call a function while specifying who is the signer (i.e. what is the account making the call)?

I'm trying to figure out how to fix this (see the "TODO" below).

I appreciate any hints. Thanks!

Ryan Walsh
NEAR Foundation Engineering

// https://github.com/near/workspaces-rs/blob/8f12f3dc3b0251ac3f44ddf6ab6fc63003579139/workspaces/tests/create_account.rs

#![recursion_limit = "256"]

use anyhow::Error;
use donation_matcher_contract::{
    generic::{near_string_to_yocto, yocto_to_near_string},
    GAS_FOR_ACCOUNT_CALLBACK,
};
use near_sdk::serde_json::json;
use test_log::test;
use workspaces::{network::Sandbox, prelude::*, Account, Worker};

async fn create_subaccount(
    worker: &Worker<Sandbox>,
    parent_account: &Account,
    name: &str,
    initial_balance: &str,
) -> Result<Account, Error> {
    let subaccount = parent_account
        .create_subaccount(&worker, name)
        .initial_balance(near_string_to_yocto(initial_balance.to_string()))
        .transact()
        .await?
        .into_result()?;

    Ok(subaccount)
}

#[test(tokio::test)]
async fn test_offer_matching_funds_and_get_commitments_and_rescind_matching_funds_and_donate(
) -> anyhow::Result<()> {
    let worker = workspaces::sandbox().await?;
    let contract = worker
        .dev_deploy(&include_bytes!("../target/res/donation_matcher_contract.wasm").to_vec())
        .await?;
    let parent_account = worker.dev_create_account().await?;
    contract
        .call(&worker, "new")
        //.args_json(json!({"recipient": &recipient.id()}))?
        .gas(GAS_FOR_ACCOUNT_CALLBACK.0)
        .transact()
        .await?;

    let recipient = create_subaccount(&worker, &parent_account, "recipient", "1 Ⓝ").await?;

    assert_eq!(
        yocto_to_near_string(&recipient.view_account(&worker).await?.balance),
        "1 Ⓝ".to_string()
    );

    let matcher1 = create_subaccount(&worker, &parent_account, "matcher1", "1 Ⓝ").await?;

    // TODO: How to set matcher1 as the caller.
    let _matcher1_offer_result = contract
        .call(&worker, "offer_matching_funds")
        .args_json(json!({"recipient": &recipient.id()}))?
        .gas(GAS_FOR_ACCOUNT_CALLBACK.0)
        .deposit(near_string_to_yocto("0.3".to_string()))
        .transact()
        .await?;

    assert_eq!(
        yocto_to_near_string(&recipient.view_account(&worker).await?.balance),
        "1 Ⓝ".to_string()
    ); // The recipient hasn't received any donation yet.
    assert_eq!(
        yocto_to_near_string(&matcher1.view_account(&worker).await?.balance),
        "0.7 Ⓝ".to_string()
    );
    // ...

    Ok(())
}

[willemneal]

You need to use a normal account.

See https://github.com/AhaLabs/bootme/blob/feat/launcher/tests/workspaces/bootloader.rs#L30-L35

You can also use a transaction builder.

[ChaoticTempest]

For your example, all you need to do to specify matcher1 as the signer is to directly use it and call into call from it like so:

matcher1.call(&worker, contract.id(), "offer_matching_funds")
   ... // rest of the options
   .transact()
   .await?

[ryancwalsh]

Thanks @willemneal and @ChaoticTempest .

That helped. Once I figure out more of Workspaces, I'll be in a better position to suggest specifically how to improve the docs. But yeah I definitely think this tip belongs in there.

[ChaoticTempest]

closed with #186