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#[test]
fn get_and_wrap_version_works() {
new_test_ext_with_balances_and_xcm_version(vec![], None).execute_with(|| {
let remote_a: MultiLocation = Parachain(1000).into();
let remote_b: MultiLocation = Parachain(1001).into();
let remote_c: MultiLocation = Parachain(1002).into();
// no `safe_xcm_version` version at `GenesisConfig`
assert_eq!(XcmPallet::get_version_for(&remote_a), None);
assert_eq!(XcmPallet::get_version_for(&remote_b), None);
assert_eq!(XcmPallet::get_version_for(&remote_c), None);
assert_eq!(VersionDiscoveryQueue::<Test>::get().into_inner(), vec![]);
// set default XCM version (a.k.a. `safe_xcm_version`)
assert_ok!(XcmPallet::force_default_xcm_version(RuntimeOrigin::root(), Some(1)));
assert_eq!(XcmPallet::get_version_for(&remote_a), None);
assert_eq!(XcmPallet::get_version_for(&remote_b), None);
assert_eq!(XcmPallet::get_version_for(&remote_c), None);
assert_eq!(VersionDiscoveryQueue::<Test>::get().into_inner(), vec![]);
// set XCM version only for `remote_a`
assert_ok!(XcmPallet::force_xcm_version(
RuntimeOrigin::root(),
Box::new(remote_a),
XCM_VERSION
));
assert_eq!(XcmPallet::get_version_for(&remote_a), Some(XCM_VERSION));
assert_eq!(XcmPallet::get_version_for(&remote_b), None);
assert_eq!(XcmPallet::get_version_for(&remote_c), None);
assert_eq!(VersionDiscoveryQueue::<Test>::get().into_inner(), vec![]);
let xcm = Xcm::<()>::default();
// wrap version - works because remote_a has `XCM_VERSION`
assert_eq!(
XcmPallet::wrap_version(&remote_a, xcm.clone()),
Ok(VersionedXcm::from(xcm.clone()))
);
// does not work because remote_b has unknown version and default is set to 1, and
// `XCM_VERSION` cannot be wrapped to the `1`
assert_eq!(XcmPallet::wrap_version(&remote_b, xcm.clone()), Err(()));
assert_eq!(VersionDiscoveryQueue::<Test>::get().into_inner(), vec![(remote_b.into(), 1)]);
// set default to the `XCM_VERSION`
assert_ok!(XcmPallet::force_default_xcm_version(RuntimeOrigin::root(), Some(XCM_VERSION)));
assert_eq!(XcmPallet::get_version_for(&remote_b), None);
assert_eq!(XcmPallet::get_version_for(&remote_c), None);
// now works, because default is `XCM_VERSION`
assert_eq!(
XcmPallet::wrap_version(&remote_b, xcm.clone()),
Ok(VersionedXcm::from(xcm.clone()))
);
assert_eq!(VersionDiscoveryQueue::<Test>::get().into_inner(), vec![(remote_b.into(), 2)]);
// change remote_c to `1`
assert_ok!(XcmPallet::force_xcm_version(RuntimeOrigin::root(), Box::new(remote_c), 1));
// does not work because remote_c has `1` and default is `XCM_VERSION` which cannot be
// wrapped to the `1`
assert_eq!(XcmPallet::wrap_version(&remote_c, xcm.clone()), Err(()));
assert_eq!(VersionDiscoveryQueue::<Test>::get().into_inner(), vec![(remote_b.into(), 2)]);
})
}