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Mastering Software Testing with JUnit 5 by Boni García

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JUnit 4

JUnit 4 is still an open source framework, though the license changed with respect to JUnit 3, from CPL to Eclipse Public License (EPL) Version 1.0. The source code of JUnit 4 is hosted on GitHub (https://github.com/junit-team/junit4/).

On February 18, 2006, JUnit 4.0 was released. It follows the same high-level guidelines than JUnit 3, that is, easily define test, the framework run tests independently, and the framework detects and report errors by the test.

One of the main differences of JUnit 4 with respect to JUnit 3 is the way that JUnit 4 allows to define tests. In JUnit 4, Java annotations are used to mark methods as tests. For this reason, JUnit 4 can only be used for Java 5 or later. As the documentation of JUnit 4.0 stated ...

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