Stop rerunning failing CI jobs and guessing. Breakpoint captures dirty runtime memory, bisects execution order permutations, and delivers an immutable evidence trail for intermittent bugs.
npx breakpoint verify --isolatedChoose a failure mode below and execute an isolated verification sequence in real-time. Watch the runner detect state pollution, calculate memory delta, and synthesize an approval-ready patch.
Identified 1 shared singleton ref
Exit 0 · 0 assertions failed
AssertionError: session key stale
Isolated sandbox restores exit 0
Traditional testing suites assume tests are pure functions. Distributed applications leak state. Breakpoint captures the boundary between what was observed and what was dirty.
A predecessor test mutates a shared singleton or database cache, causing downstream tests to fail only when executed in declared order.
Unclosed HTTP connection pools, active database timers, and unawaited microtasks that cause silent memory starvation across worker threads.
Interleaved asynchronous promises that succeed on fast developer laptops but consistently desynchronize under constrained CI core allocations.
Binary search AST permutation algorithm that pinpoints the exact offending test pair in 4 runs rather than rerunning the whole test suite.
Four hermetic stages that turn a mysterious intermittent failure into a verified cryptographic certificate of resolution.
Scans project test files without executing untrusted code. Discovers singletons, global bindings, mock registries, and runner framework hooks.
Executes the failing test target in complete process isolation with a scrubbed environment to prove whether the failure is intrinsic or order-dependent.
Replays pairwise execution matrices to pinpoint the exact predecessor file and test case that corrupts the shared runtime memory.
Proposes an explicit teardown cleanup patch. Keeps code untouched until approved, then records rerun telemetry to produce an immutable audit certificate.
Why blind retries and text log dumps fail to solve flaky tests, and how deterministic isolation solves them permanently.
| DIAGNOSTIC CAPABILITY | CONVENTIONAL CI LOG DUMPS | BREAKPOINT RUNTIME |
|---|---|---|
| Failure Diagnosis Method | Reading 4,000 lines of raw unstructured console logs | Structured evidence graph linking memory delta to test pair |
| Flakiness Handling | Rerunning the suite 3 times hoping it passes ('retry flake') | Deterministic order-bisection proving exact polluting mutation |
| Code Mutation Safety | AI agents silently modifying code without audit trail | Approval-gated diffs with cryptographic verification certificate |
| Execution Environment | Sending codebase and secrets to third-party cloud LLMs | 100% local-first runner with zero network exfiltration |
“A log dump is not evidence. A plausible hypothesis is not a root cause. No diagnosis should be promoted to fact without an isolated recorded run to prove it.”
Connect your local repository, inspect order-dependent failures, and generate verified digital fix certificates right now. 100% local-first on your machine.