Question - What is a flaky test?
Answer -
A test that intermittently fails for no apparent reason is called a flaky test. Flaky tests usually work correctly on the developer’s machine but fail on the CI server. Flaky tests are difficult to debug and are a major source of frustration.
Common sources of flakiness are:
- Improperly handled concurrency.
- Dependency on test order within the test suite.
- Side effects in tests.
- Use of non-deterministic code.
- Non-identical test environments.