8 core data testing patterns for reliable data pipelines
goyalshaliniuk · x · 2026-09-21
A rundown of 8 core testing patterns for building reliable data pipelines: unit tests to validate single transformations, integration tests across sources/jobs/storage/outputs, contract tests via schema and payload validation between producers and consumers, regression tests against trusted baselines, smoke tests for the main path, snapshot tests freezing expected results, and data diff tests comparing datasets row by row.
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