5 best Java Testing Generic libraries in 2022

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by marketing.admin@openweaver.com dot icon Updated: Dec 13, 2022

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For testing with Java, perform functions such as parameter verification, processing skips, checking missing fields, generating assertions for test cases, executing test cases, checking for user permissions, calculating the fitness of a test suite, calculating the number of tests that are not suitable, and many more. 


Every component of your program can be tested with Java testing's comprehensive and functional test cases. A Java application can be tested in various ways. Benchmarks evaluate the code's effectiveness. Integration verifies the consistency and compatibility of a collection of modules or an entire program. Unit testing, integration testing, interface testing, security testing, java API testing, rest API testing, REST assured testing, load testing, white-box testing, and other types of testing can be considered depending on the need and requirements. 


When it comes to Java testing, most people prefer JUnit. A JUnit test case is a test scenario that evaluates functionality across several conditions or actions in order to confirm the anticipated outcome. A simple and straightforward framework for creating repeatable tests is JUnit. 


However, we're here to introduce five other great Java testing libraries for your projects. "cglib" -- high-level API to generate and transform Java byte code; "cats" -- generate tests at runtime based on OpenApi specs; "evosuite" -- JUnit test suites for Java classes; "screenshot-tests-for-android"; and "randoop." 

cglibby cglib

Java doticonstar image 4594 doticonVersion:RELEASE_3_3_0doticon
License: Permissive (Apache-2.0)

cglib - Byte Code Generation Library is high level API to generate and transform Java byte code. It is used by AOP, testing, data access frameworks to generate dynamic proxy objects and intercept field access.

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            cglibby cglib

            Java doticon star image 4594 doticonVersion:RELEASE_3_3_0doticon License: Permissive (Apache-2.0)

            cglib - Byte Code Generation Library is high level API to generate and transform Java byte code. It is used by AOP, testing, data access frameworks to generate dynamic proxy objects and intercept field access.
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                      Java doticonstar image 1693 doticonVersion:0.15.0doticon
                      License: Permissive (Apache-2.0)

                      Generate fast deterministic screenshots during Android instrumentation tests

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                                screenshot-tests-for-androidby facebook

                                Java doticon star image 1693 doticonVersion:0.15.0doticon License: Permissive (Apache-2.0)

                                Generate fast deterministic screenshots during Android instrumentation tests
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                                          catsby Endava

                                          Java doticonstar image 935 doticonVersion:cats-8.6.0doticon
                                          License: Permissive (Apache-2.0)

                                          CATS is a REST API Fuzzer and negative testing tool for OpenAPI endpoints. CATS automatically generates, runs and reports tests with minimum configuration and no coding effort. Tests are self-healing and do not require maintenance.

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                                                    catsby Endava

                                                    Java doticon star image 935 doticonVersion:cats-8.6.0doticon License: Permissive (Apache-2.0)

                                                    CATS is a REST API Fuzzer and negative testing tool for OpenAPI endpoints. CATS automatically generates, runs and reports tests with minimum configuration and no coding effort. Tests are self-healing and do not require maintenance.
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                                                              evosuiteby EvoSuite

                                                              Java doticonstar image 716 doticonVersion:v1.2.0doticon
                                                              License: Weak Copyleft (LGPL-3.0)

                                                              EvoSuite - automated generation of JUnit test suites for Java classes

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                                                                        evosuiteby EvoSuite

                                                                        Java doticon star image 716 doticonVersion:v1.2.0doticon License: Weak Copyleft (LGPL-3.0)

                                                                        EvoSuite - automated generation of JUnit test suites for Java classes
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                                                                                  randoopby randoop

                                                                                  Java doticonstar image 455 doticonVersion:v4.3.2doticon
                                                                                  License: Permissive (MIT)

                                                                                  Automatic test generation for Java

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                                                                                            randoopby randoop

                                                                                            Java doticon star image 455 doticonVersion:v4.3.2doticon License: Permissive (MIT)

                                                                                            Automatic test generation for Java
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