assert
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1.AssertJ Core26,286 usages

org.assertj » assertj-core Apache

Rich and fluent assertions for testing in Java
Last Release on Jan 24, 2026

2.JSONassert1,964 usages

org.skyscreamer » jsonassert Apache

Library for writing tests that checks JSON documents (useful for testing responses from REST services).
Last Release on Jun 28, 2024

3.Kotest423 usages

io.kotest » kotest-assertions-core-jvm Apache

Kotlin Test Framework
Last Release on Sep 12, 2026

4.JSON Path Assert375 usages

com.jayway.jsonpath » json-path-assert Apache

A library to query and verify JSON
Last Release on Feb 22, 2026

5.JSON Unit AssertJ248 usages

net.javacrumbs.json-unit » json-unit-assertj Apache

JSON Assertions based on AssertJ
Last Release on Aug 13, 2026

6.AssertJ Guava145 usages

org.assertj » assertj-guava Apache

Rich and fluent assertions for testing for Guava
Last Release on Jan 24, 2026

7.XMLUnit AssertJ89 usages

org.xmlunit » xmlunit-assertj Apache

XMLUnit with AssertJ fluent API
Last Release on Aug 1, 2026

8.Kotest87 usages

io.kotest » kotest-assertions-core Apache

Kotlin Test Framework
Last Release on Sep 12, 2026

9.XMLUnit Assertj352 usages

org.xmlunit » xmlunit-assertj3 Apache

XMLUnit with AssertJ 3.x fluent API
Last Release on Aug 1, 2026

10.Kotest44 usages

io.kotest » kotest-assertions-core-js Apache

Kotlin Test Framework
Last Release on Sep 12, 2026