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mutate_exists for StorageValue with ValueQuery (#13245)

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* mutate_exists for StorageValue with ValueQuery

Signed-off-by: muraca <mmuraca247@gmail.com>

* added `#[crate::storage_alias]` to tests

Signed-off-by: muraca <mmuraca247@gmail.com>

* added StorageEntryMetadata

Signed-off-by: muraca <mmuraca247@gmail.com>

* Update frame/support/src/lib.rs

---------

Signed-off-by: muraca <mmuraca247@gmail.com>
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
This commit is contained in:
Matteo Muraca
2023-01-28 00:47:17 +01:00
committed by GitHub
parent c9361bed1a
commit a9277002b9
4 changed files with 105 additions and 0 deletions
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substrate/frame/support/src/lib.rs
+63
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@@ -874,6 +874,7 @@ pub mod tests {
decl_storage! {
trait Store for Module<T: Config> as Test {
pub Value get(fn value): u64;
pub Data get(fn data) build(|_| vec![(15u32, 42u64)]):
map hasher(twox_64_concat) u32 => u64;
pub OptionLinkedMap: map hasher(blake2_128_concat) u32 => Option<u32>;
@@ -946,6 +947,61 @@ pub mod tests {
});
}
#[test]
fn storage_value_mutate_exists_should_work() {
new_test_ext().execute_with(|| {
#[crate::storage_alias]
pub type Value = StorageValue<Test, u32>;
assert!(!Value::exists());
Value::mutate_exists(|v| *v = Some(1));
assert!(Value::exists());
assert_eq!(Value::get(), Some(1));
// removed if mutated to `None`
Value::mutate_exists(|v| *v = None);
assert!(!Value::exists());
});
}
#[test]
fn storage_value_try_mutate_exists_should_work() {
new_test_ext().execute_with(|| {
#[crate::storage_alias]
pub type Value = StorageValue<Test, u32>;
type TestResult = result::Result<(), &'static str>;
assert!(!Value::exists());
// mutated if `Ok`
assert_ok!(Value::try_mutate_exists(|v| -> TestResult {
*v = Some(1);
Ok(())
}));
assert!(Value::exists());
assert_eq!(Value::get(), Some(1));
// no-op if `Err`
assert_noop!(
Value::try_mutate_exists(|v| -> TestResult {
*v = Some(2);
Err("nah")
}),
"nah"
);
assert_eq!(Value::get(), Some(1));
// removed if mutated to`None`
assert_ok!(Value::try_mutate_exists(|v| -> TestResult {
*v = None;
Ok(())
}));
assert!(!Value::exists());
});
}
#[test]
fn map_issue_3318() {
new_test_ext().execute_with(|| {
@@ -1257,6 +1313,13 @@ pub mod tests {
PalletStorageMetadata {
prefix: "Test",
entries: vec![
StorageEntryMetadata {
name: "Value",
modifier: StorageEntryModifier::Default,
ty: StorageEntryType::Plain(scale_info::meta_type::<u64>()),
default: vec![0, 0, 0, 0, 0, 0, 0, 0],
docs: vec![],
},
StorageEntryMetadata {
name: "Data",
modifier: StorageEntryModifier::Default,