HARDENING CYCLE

Where flakiness lives — and how we fix it.

Three zones, one investigation pass. Wakalix classifies every flaky test, produces a fix batch your engineers approve, and measures whether the CI failure rate drops.

Bring one flaky suite

Isolation fixes

Break implicit dependencies

Tests that pass in isolation fail in parallel runs because they share database rows, global singletons, or environment variables. The fix is explicit isolation: each test owns its setup and teardown.

t.Cleanup() / afterEach()
Per-test DB transaction
Test-scoped env fixtures

Timing fixes

Replace sleeps with conditions

Hardcoded sleep(200ms) is a bet that 200ms is always enough. It isn't. The replacement is a wait-for-condition loop with a hard timeout — the test fails loud instead of flaking silently.

waitForCondition() / poll
Explicit timeout + fatal
Retry with backoff

State fixes

Own the fixture lifecycle

Shared DB fixtures written by one test and read by another create ordering dependencies. The fix is either test-local fixture creation or a seeding harness that guarantees state before each test run.

TestMain() setup/teardown
Fixture factories
TRUNCATE before each run

How it works

Classify

Run suite 10× in parallel, classify every failure by zone

Prioritise

Rank by CI failure frequency and fix cost

Fix batch

Produce reviewable PRs by zone — you approve each batch

Measure

Re-run suite, compare failure rates, report delta

In wakalix, flaky test rescue is a scoped cycle, not an indefinite effort. We start with a classification pass — what's flaky, which zone, how often. Fix batches flow zone-by-zone, each as a separate reviewable PR. You approve what merges. At cycle close, you see the CI failure rate before and after. If the root cause is deeper than one cycle can address, we scope a follow-on increment and document the continuation path cleanly.

Bring one flaky suite.

We'll classify, prioritise, and fix in reviewable batches your team can merge.

Start here