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Add swap and decode_len to DoubleMap finishing #3749 (#4264)

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* Add `swap` and `decode_len` to `DoubleMap`

*  Add tests to `swap` and `decode_len` for `DoubleMap` (WIP)

* Address review comments

* Remove function that is not in scope

* fix test

* better naming
This commit is contained in:
thiolliere
2019-12-02 13:01:29 +01:00
committed by Bastian Köcher
parent 810ac845b5
commit 22c00ff424
5 changed files with 109 additions and 2 deletions
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substrate/frame/support/src/lib.rs
+30
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@@ -292,6 +292,36 @@ mod tests {
});
}
#[test]
fn double_map_swap_works() {
new_test_ext().execute_with(|| {
DataDM::insert(0, 1, 1);
DataDM::insert(1, 0, 2);
DataDM::insert(1, 1, 3);
let get_all = || vec![
DataDM::get(0, 1),
DataDM::get(1, 0),
DataDM::get(1, 1),
DataDM::get(2, 0),
DataDM::get(2, 1),
];
assert_eq!(get_all(), vec![1, 2, 3, 0, 0]);
// Two existing
DataDM::swap(0, 1, 1, 0);
assert_eq!(get_all(), vec![2, 1, 3, 0, 0]);
// Left existing
DataDM::swap(1, 0, 2, 0);
assert_eq!(get_all(), vec![2, 0, 3, 1, 0]);
// Right existing
DataDM::swap(2, 1, 1, 1);
assert_eq!(get_all(), vec![2, 0, 0, 1, 3]);
});
}
#[test]
fn linked_map_basic_insert_remove_should_work() {
new_test_ext().execute_with(|| {