use crate::{
storage::{StorageDecodeLength, StorageTryAppend},
traits::Get,
};
pub use sp_runtime::{BoundedSlice, BoundedVec};
impl<T, S> StorageDecodeLength for BoundedVec<T, S> {}
impl<T, S: Get<u32>> StorageTryAppend<T> for BoundedVec<T, S> {
fn bound() -> usize {
S::get() as usize
}
}
#[cfg(test)]
pub mod test {
use super::*;
use crate::{traits::ConstU32, Twox128};
use sp_io::TestExternalities;
use sp_runtime::bounded_vec;
#[crate::storage_alias]
type Foo = StorageValue<Prefix, BoundedVec<u32, ConstU32<7>>>;
#[crate::storage_alias]
type FooMap = StorageMap<Prefix, Twox128, u32, BoundedVec<u32, ConstU32<7>>>;
#[crate::storage_alias]
type FooDoubleMap =
StorageDoubleMap<Prefix, Twox128, u32, Twox128, u32, BoundedVec<u32, ConstU32<7>>>;
#[test]
fn decode_len_works() {
TestExternalities::default().execute_with(|| {
let bounded: BoundedVec<u32, ConstU32<7>> = bounded_vec![1, 2, 3];
Foo::put(bounded);
assert_eq!(Foo::decode_len().unwrap(), 3);
});
TestExternalities::default().execute_with(|| {
let bounded: BoundedVec<u32, ConstU32<7>> = bounded_vec![1, 2, 3];
FooMap::insert(1, bounded);
assert_eq!(FooMap::decode_len(1).unwrap(), 3);
assert!(FooMap::decode_len(0).is_none());
assert!(FooMap::decode_len(2).is_none());
});
TestExternalities::default().execute_with(|| {
let bounded: BoundedVec<u32, ConstU32<7>> = bounded_vec![1, 2, 3];
FooDoubleMap::insert(1, 1, bounded);
assert_eq!(FooDoubleMap::decode_len(1, 1).unwrap(), 3);
assert!(FooDoubleMap::decode_len(2, 1).is_none());
assert!(FooDoubleMap::decode_len(1, 2).is_none());
assert!(FooDoubleMap::decode_len(2, 2).is_none());
});
}
}