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Mocha's --parallel splits test files across worker processes. This architecture note covers when the speedup justifies the isolation work, per-worker resource design, operational checks, and the failure modes to expect.
TestMethodOrder not respected under concurrent execution When enabling parallel test execution in JUnit 5 with @Execution(ExecutionMode.CONCURRENT) , the ordering specified by @TestMethodOrder appears to be ignored, causing interleaved test runs that break assumptions about state initialization. The goal is to understand whether the ordering guarantee holds
Parallel Test Execution Overview Mocha 8.0.0 introduced the --parallel flag, which runs each test file in a separate worker process. This isolation removes shared global state between files and makes execution order nondeterministic. However, the framework does not explicitly document how global lifecycle hooks ( before , after , beforeEach , afterEach ) beh
nodejs
mocha
junit