35% off Essential Test-Driven Development

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Public code published by author Rob Myers for purchases on InformIT, independently matched to merchant product/author. Only print ISBN9780134494159 or eBook ISBN9780134494364. Discount from list price, not an additional35% on displayed20%-off price. Excludes Best Value/Additional Savings print+eBook bundles. No stacking or cash redemption; issuer may change offer. Ends31December2026 23:59EST. US merchant storefront; no blanket international qualification asserted. Taxes and shipping follow merchant cart; electronic goods are nonrefundable under published ordering policy. Source is author-issued terms, not merchant checkout evidence. Ordering terms: https://www.informit.com/cart/ordering.aspx Primary source checked15October2026 IST; not checkout tested.

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