November 2024
Intermediate to advanced
300 pages
7h 12m
English
Content preview from Pragmatic Unit Testing in Java with JUnit, 3rd EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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A Mélange of Important Test Double Tips
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A good mock-based test is three lines: a one-line arrange step with a highly readable smart stub declaration, followed by one-line act and assert steps. That’s a test anyone can quickly read, understand, and trust.
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In answersAppropriateAddressForValidCoordinates, the expected parameter string of "lat=38.000000&lon=-104.000000" correlates clearly with the act arguments of 38.0 and -104.0. Creating correlation between arrange and assert isn’t easy sometimes, but it saves developers from digging about for understanding. Without such correlation, tests using mocks can be hard to follow.
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Mocks supplant real behavior. Ask yourself if you’re using them safely. Does your mock really emulate the way the production ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.