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5 best Java Testing Generic libraries in 2022

by Open Weaver kits ✔ Updated: Dec 13, 2022

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 star image 4527 Version:3.3.0

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 star image 4527 Version:3.3.0 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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screenshot-tests-for-androidby facebook

Java star image 1693 Version:0.15.0

License: Permissive (Apache-2.0)

Generate fast deterministic screenshots during Android instrumentation tests

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screenshot-tests-for-androidby facebook

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

Generate fast deterministic screenshots during Android instrumentation tests
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catsby Endava

Java star image 884 Version:cats-8.4.0

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 star image 884 Version:cats-8.4.0 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 star image 504 Version:1.0.6

License: Others (Non-SPDX)

EvoSuite - automated generation of JUnit test suites for Java classes

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evosuiteby EvoSuite

Java star image 504 Version:1.0.6 License: Others (Non-SPDX)

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

Java star image 432 Version:v4.3.2

License: Permissive (MIT)

Automatic test generation for Java

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randoopby randoop

Java star image 432 Version:v4.3.2 License: Permissive (MIT)

Automatic test generation for Java
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