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Flawed test data led to duplicate charging station listings on map

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In July, a developer discovered duplicate listings for the same physical charging sites on their company's map. The map aggregates data from sources like the German federal register and roaming networks, using a nightly job to deduplicate records. A May refactor of this job introduced a test suite that incorrectly assumed operator names from different sources would match. This flawed test data, not based on real-world examples, allowed most real duplicates to remain, as operator names rarely align between sources.

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Flawed test data led to duplicate charging station listings on map · ShortSingh