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add a unit test for multiple mutations

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This commit is contained in:
Damien Elmes 2021-04-05 11:52:23 +10:00
parent 996d9f9bbc
commit 3adf03f9cb
1 changed files with 21 additions and 5 deletions
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26
rslib/src/undo/mod.rs
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@ -247,7 +247,7 @@ mod test {
use crate::{collection::open_test_collection, prelude::*}; use crate::{collection::open_test_collection, prelude::*};
#[test] #[test]
fn undo() { fn undo() -> Result<()> {
let mut col = open_test_collection(); let mut col = open_test_collection();
let mut card = Card { let mut card = Card {
@ -324,10 +324,7 @@ mod test {
card.interval = 5; card.interval = 5;
Ok(()) Ok(())
}) })
.unwrap(); })?;
Ok(())
})
.unwrap();
assert_eq!(col.storage.get_card(cid).unwrap().unwrap().interval, 5); assert_eq!(col.storage.get_card(cid).unwrap().unwrap().interval, 5);
assert_eq!(col.can_undo(), Some(Op::UpdateCard)); assert_eq!(col.can_undo(), Some(Op::UpdateCard));
assert_eq!(col.can_redo(), None); assert_eq!(col.can_redo(), None);
@ -336,5 +333,24 @@ mod test {
col.transact_no_undo(|_col| Ok(())).unwrap(); col.transact_no_undo(|_col| Ok(())).unwrap();
assert_eq!(col.can_undo(), None); assert_eq!(col.can_undo(), None);
assert_eq!(col.can_redo(), None); assert_eq!(col.can_redo(), None);
// if an object is mutated multiple times in one operation,
// the changes should be undone in the correct order
col.transact(Op::UpdateCard, |col| {
col.get_and_update_card(cid, |card| {
card.interval = 10;
Ok(())
})?;
col.get_and_update_card(cid, |card| {
card.interval = 15;
Ok(())
})
})?;
assert_eq!(col.storage.get_card(cid).unwrap().unwrap().interval, 15);
col.undo()?;
assert_eq!(col.storage.get_card(cid).unwrap().unwrap().interval, 5);
Ok(())
} }
} }