# Test a pipeline Control / test unit-test a pipeline against expected output Page: ## Status Not built yet. arcform does not do this yet; it would live in how a Protocol runs. [Its place on the roadmap](https://meridian.online/roadmap#test-a-pipeline) ## What other tools call it Meridian's classification; an independent blind rating agreed on 86.2% of 312 rows (exact class, version 2). - Apache Hop: [`Execute unit tests`](https://hop.apache.org/manual/latest/pipeline/transforms/exectests.html) (read 2026-09-27) - Apache Hop: [`Run pipeline unit tests`](https://hop.apache.org/manual/latest/workflow/actions/runpipelinetests.html) (read 2026-09-27) - Talend: [`tAssert`](https://help.qlik.com/talend/en-US/components/8.0/logs-and-errors/logs-and-errors-component) (read 2026-09-27) - Talend: [`tBoundedStreamInput`](https://help.qlik.com/talend/en-US/components/8.0/technical/technical-component) (read 2026-09-27) - Talend: [`tCollectAndCheck`](https://help.qlik.com/talend/en-US/components/8.0/technical/technical-component) (read 2026-09-27)