44 lines
1.2 KiB
Rust
44 lines
1.2 KiB
Rust
use super::SnapshotMap;
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#[test]
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fn basic() {
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let mut map = SnapshotMap::default();
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map.insert(22, "twenty-two");
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let snapshot = map.snapshot();
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map.insert(22, "thirty-three");
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assert_eq!(map[&22], "thirty-three");
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map.insert(44, "forty-four");
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assert_eq!(map[&44], "forty-four");
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assert_eq!(map.get(&33), None);
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map.rollback_to(snapshot);
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assert_eq!(map[&22], "twenty-two");
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assert_eq!(map.get(&33), None);
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assert_eq!(map.get(&44), None);
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}
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#[test]
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#[should_panic]
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fn out_of_order() {
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let mut map = SnapshotMap::default();
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map.insert(22, "twenty-two");
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let snapshot1 = map.snapshot();
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map.insert(33, "thirty-three");
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let snapshot2 = map.snapshot();
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map.insert(44, "forty-four");
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map.rollback_to(snapshot1); // bogus, but accepted
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map.rollback_to(snapshot2); // asserts
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}
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#[test]
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fn nested_commit_then_rollback() {
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let mut map = SnapshotMap::default();
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map.insert(22, "twenty-two");
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let snapshot1 = map.snapshot();
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let snapshot2 = map.snapshot();
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map.insert(22, "thirty-three");
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map.commit(snapshot2);
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assert_eq!(map[&22], "thirty-three");
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map.rollback_to(snapshot1);
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assert_eq!(map[&22], "twenty-two");
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}
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