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Test-Driven Java Development - Second Edition by Viktor Farcic, Alex Garcia

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Hamcrest

As described in Chapter 2, Tools, Frameworks, and Environment, Hamcrest improves our test's readability. It makes assertions more semantic and comprehensive when complexity is reduced by using matchers. When a test fails, the error shown becomes more expressive by interpreting the matchers used in the assertion. A message could also be added by the developer.

The Hamcrest library is full of different matchers for different object types and collections. Let's start coding and get a taste of it.

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