{"record":{"id":"201cae0fb2a68ad0","repo":"SeaQL/sea-orm","slug":"there-is-no-open-transaction-to-commit-201cae","errorCode":null,"errorMessage":"There is no open transaction to commit","messagePattern":"There is no open transaction to commit","errorType":"panic","errorClass":null,"httpStatus":null,"severity":"error","filePath":"src/database/mock.rs","lineNumber":196,"sourceCode":"    #[instrument(level = \"trace\")]\n    fn begin(&mut self) {\n        match self.transaction.as_mut() {\n            Some(transaction) => transaction.begin_nested(self.db_backend),\n            None => self.transaction = Some(OpenTransaction::init()),\n        }\n    }\n\n    #[instrument(level = \"trace\")]\n    fn commit(&mut self) {\n        match self.transaction.as_mut() {\n            Some(transaction) => {\n                if transaction.commit(self.db_backend) {\n                    if let Some(transaction) = self.transaction.take() {\n                        self.transaction_log.push(transaction.into_transaction());\n                    }\n                }\n            }\n            None => panic!(\"There is no open transaction to commit\"),\n        }\n    }\n\n    #[instrument(level = \"trace\")]\n    fn rollback(&mut self) {\n        match self.transaction.as_mut() {\n            Some(transaction) => {\n                if transaction.rollback(self.db_backend) {\n                    if let Some(transaction) = self.transaction.take() {\n                        self.transaction_log.push(transaction.into_transaction());\n                    }\n                }\n            }\n            None => panic!(\"There is no open transaction to rollback\"),\n        }\n    }\n\n    fn drain_transaction_log(&mut self) -> Vec<Transaction> {","sourceCodeStart":178,"sourceCodeEnd":214,"githubUrl":"https://github.com/SeaQL/sea-orm/blob/e29bcd1b417c41a553b386fe94511d7c64a1c8ec/src/database/mock.rs#L178-L214","documentation":"The mock database's transaction driver panics when `commit` is invoked while `self.transaction` is `None`, i.e. no `begin()` has opened a transaction (or it was already committed/rolled back). The mock simulates SQL transaction semantics strictly, so a commit without a matching begin is treated as a protocol violation.","triggerScenarios":"Executing `COMMIT` on a `MockDatabase` / `MockTransaction` where `begin` was never issued, or issuing two `commit`s for one `begin`.","commonSituations":"Unit tests that issue COMMIT directly without BEGIN; a test helper replaying statements in the wrong order; code under test whose begin path was skipped by an early return, leaving a stray commit; double-commit in cleanup logic.","solutions":["Ensure every `COMMIT` is preceded by a matching `BEGIN` on the same connection in the test script.","Remove duplicate commit calls; commit exactly once per open transaction.","Check the code under test for early returns that skip `begin` but still reach `commit`.","Use `rollback` in the None arm or restructure the test so cleanup is idempotent."],"exampleFix":"// before (mock test script)\nuse(stmt), commit(stmt) // panics: no open transaction\n\n// after\nbegin(stmt), use(stmt), commit(stmt)","handlingStrategy":"validation","validationCode":"// mock test script: assert pairing before finalizing\nassert_eq!(script.iter().filter(|s| s.is_begin()).count(),\n           script.iter().filter(|s| s.is_commit()).count(),\n           \"unbalanced BEGIN/COMMIT\");","typeGuard":"fn has_open_transaction(mock: &MockDatabase) -> bool {\n    mock.transaction_depth() > 0 // or track begin/commit counts in the harness\n}","tryCatchPattern":"std::panic::catch_unwind(|| mock.commit()) // prefer fixing the script over catching","preventionTips":["Always pair begin/commit (and begin/rollback) in the same code path.","Build mock scripts with a helper that auto-balances transaction pairs.","Make error cleanup idempotent so rollback/commit cannot fire twice.","Review early-return paths that might skip begin but still commit."],"tags":["panic","transaction","mock","testing"],"backgroundTag":"invalid-state-transition","analyzedSha":"e29bcd1b417c41a553b386fe94511d7c64a1c8ec","analyzedAt":"2026-09-10T11:31:52.468Z","contentChangedAt":"2026-09-10T11:31:52.468Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}