October 2016
Intermediate to advanced
198 pages
3h 52m
English
Content preview from Scala Test-Driven DevelopmentBecome 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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Generator-driven properties
Sometimes, we want our properties to be checked against a randomly generated set of inputs. These input values are generated within some bounds that we can define with conditions. One example is, when we have a compression algorithm that needs testing. Instead of using a predefined list of strings, we can have a generated set of strings so that our function is tested against them.
Generator-driven property tests make use of ScalaCheck; therefore, make sure ScalaCheck JAR is included in the classpath. Your test will need to mixin GeneratorDrivenPropertyCheck. If your test uses both table-driven property checks and Generator-driven property checks, then mixin trait PropertyChecks as it extends both TableDrivenPropertyChecks ...
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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.