md-cli 0.5.2

CLI for the Mnemonic Descriptor (MD) engravable BIP 388 wallet policy backup format
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#![allow(missing_docs)]
#![cfg(feature = "json")]

use assert_cmd::Command;
use bitcoin::Network;
use bitcoin::bip32::{DerivationPath, Xpriv, Xpub};
use bitcoin::secp256k1::Secp256k1;
use std::str::FromStr;

const ABANDON: &str =
    "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about";

fn account_xpub(path: &str, network: Network) -> Xpub {
    let mn = bip39::Mnemonic::parse(ABANDON).unwrap();
    let seed = mn.to_seed("");
    let secp = Secp256k1::new();
    let master = Xpriv::new_master(network, &seed).unwrap();
    let dp = DerivationPath::from_str(path).unwrap();
    let xpriv = master.derive_priv(&secp, &dp).unwrap();
    Xpub::from_priv(&secp, &xpriv)
}

#[test]
fn snapshot_wpkh_mainnet_receive_0_to_2() {
    let xpub = account_xpub("m/84'/0'/0'", Network::Bitcoin);
    let key = format!("@0={xpub}");
    let out = Command::cargo_bin("md")
        .unwrap()
        .args([
            "address",
            "--template",
            "wpkh(@0/<0;1>/*)",
            "--key",
            &key,
            "--count",
            "3",
            "--json",
        ])
        .output()
        .unwrap();
    let body = String::from_utf8(out.stdout).unwrap();
    insta::assert_snapshot!("wpkh_mainnet_receive_0_to_2", body);
}

#[test]
fn snapshot_wpkh_mainnet_change_0() {
    let xpub = account_xpub("m/84'/0'/0'", Network::Bitcoin);
    let key = format!("@0={xpub}");
    let out = Command::cargo_bin("md")
        .unwrap()
        .args([
            "address",
            "--template",
            "wpkh(@0/<0;1>/*)",
            "--key",
            &key,
            "--change",
            "--json",
        ])
        .output()
        .unwrap();
    let body = String::from_utf8(out.stdout).unwrap();
    insta::assert_snapshot!("wpkh_mainnet_change_0", body);
}

#[test]
fn snapshot_wpkh_testnet_receive_0() {
    let xpub = account_xpub("m/84'/1'/0'", Network::Testnet);
    let key = format!("@0={xpub}");
    let out = Command::cargo_bin("md")
        .unwrap()
        .args([
            "address",
            "--template",
            "wpkh(@0/<0;1>/*)",
            "--key",
            &key,
            "--network",
            "testnet",
            "--json",
        ])
        .output()
        .unwrap();
    let body = String::from_utf8(out.stdout).unwrap();
    insta::assert_snapshot!("wpkh_testnet_receive_0", body);
}

#[test]
fn snapshot_wsh_2of2_mainnet_receive_0() {
    // 2-of-2 wsh-multi at m/48'/0'/0'/2', same xpub for @0 and @1 (degenerate
    // but structurally valid; same fixture pattern as the non-JSON wsh-multi
    // integration test in cmd_address.rs).
    let xpub = account_xpub("m/48'/0'/0'/2'", Network::Bitcoin);
    let key_a = format!("@0={xpub}");
    let key_b = format!("@1={xpub}");
    let out = Command::cargo_bin("md")
        .unwrap()
        .args([
            "address",
            "--template",
            "wsh(multi(2,@0/<0;1>/*,@1/<0;1>/*))",
            "--key",
            &key_a,
            "--key",
            &key_b,
            "--json",
        ])
        .output()
        .unwrap();
    let body = String::from_utf8(out.stdout).unwrap();
    insta::assert_snapshot!("wsh_2of2_mainnet_receive_0", body);
}