equalsverifier | EqualsVerifier can be used in Java unit tests to verify whether the contract for the equals and hash | Unit Testing library

 by   jqno Java Version: 3.15.1 License: Apache-2.0

kandi X-RAY | equalsverifier Summary

kandi X-RAY | equalsverifier Summary

equalsverifier is a Java library typically used in Testing, Unit Testing applications. equalsverifier has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has high support. You can download it from GitHub, Maven.

EqualsVerifier can be used in Java unit tests to verify whether the contract for the equals and hashCode methods in a class is met. The Maven coordinates are:. Note that there's also a 'fat' jar with no transitive dependencies with artifactId equalsverifier-nodep.

            kandi-support Support

              equalsverifier has a highly active ecosystem.
              It has 633 star(s) with 74 fork(s). There are 18 watchers for this library.
              There were 4 major release(s) in the last 6 months.
              There are 3 open issues and 299 have been closed. On average issues are closed in 78 days. There are no pull requests.
              It has a negative sentiment in the developer community.
              The latest version of equalsverifier is 3.15.1

            kandi-Quality Quality

              equalsverifier has 0 bugs and 0 code smells.

            kandi-Security Security

              equalsverifier has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              equalsverifier code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              equalsverifier is licensed under the Apache-2.0 License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              equalsverifier releases are available to install and integrate.
              Deployable package is available in Maven.
              Build file is available. You can build the component from source.
              Installation instructions, examples and code snippets are available.
              It has 30171 lines of code, 3140 functions and 356 files.
              It has low code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

            kandi has reviewed equalsverifier and discovered the below as its top functions. This is intended to give you an instant insight into equalsverifier implemented functionality, and help decide if they suit your requirements.
            • Add date - time classes .
            • Returns the factory cache .
            • Start the downloader .
            • Returns set of excluded fields .
            • Checks that the equals method is final .
            • Performs a value reflexivity check .
            • Checks if the field should be ignored .
            • Visits all fields in the given type .
            • Verify that record invariants .
            • Validates class annotations .
            Get all kandi verified functions for this library.

            equalsverifier Key Features

            No Key Features are available at this moment for equalsverifier.

            equalsverifier Examples and Code Snippets

            How to change constructor arguments?
            Lines of Code : 11dot img1License : Strong Copyleft (CC BY-SA 4.0)
            copy iconCopy
            void Should_RespectEqualsContract() {

            Community Discussions


            Equalsverifier fails when run with quarkus:dev
            Asked 2021-Dec-03 at 15:31

            When running equalsverfier in quarkus dev mode, equalsverfier tests fail.

            I tried to test a class with equalsverifier. This works in my IDE. I tried to use it in quarkus dev mode (by running ./mvnw quarkus:dev), but then it fails with the following exception:



            Answered 2021-Dec-03 at 15:31

            EqualsVerifier uses Objenesis to create instances of classes, and it keeps the same reference of the objenesis object around for performance reasons. It caches all the objects it has created before, so that makes things quicker when you want to create the same object over and over again, which EqualsVerifier tends to do.

            However, EqualsVerifier keeps a static reference to objenesis, which means that it lives as long as the JVM does. It turns out that the Quarkus test runner can re-run the same tests again and again, and it creates a new class loader each time. But part of the equality of java.lang.Class is that the classloader that created the class, must also be the same. So it couldn't retrieve these objects from its cache anymore and returnd instances with classloaders that are now different from the other objects created in the test, and this caused the exceptions that you saw.

            In version 3.8 of EqualsVerifier (created as a result of this StackOverflow post), this issue can be avoided by adding #withResetCaches() like this:

            Source https://stackoverflow.com/questions/70123578


            How to change constructor arguments?
            Asked 2021-Nov-05 at 07:13

            I have a record that performs a verification in its constructor as such :



            Answered 2021-Nov-05 at 07:13

            You're very close. You shouldn't provide the class that you're testing as a prefab value; instead you need to provide the paramter that's causing trouble, like this:

            Source https://stackoverflow.com/questions/69811066


            EqualsVerifier in SpringBoot
            Asked 2021-Mar-09 at 09:37

            I am creating the tests for two classes that share a list of data. When I use EqualsVerifier I get an error because it is asking me for a list with data shared by these two classes.

            This is the error:

            Recursive datastructure. Add prefab values for one of the following types: CustomerView, List, YearConfigView

            This is the @Test class:



            Answered 2021-Mar-09 at 08:50

            Creator of EqualsVerifier here.

            Without seeing your classes (I'd like to see exactly which fields CustomerView and YearConfigView have, and how equals and hashCode are implemented on both classes), it's hard to say for certain what's going on, but I suspect it's this:

            CustomerView has a reference to YearConfigView (or perhaps List), and YearConfigView has a reference to CustomerView.

            EqualsVerifier, while doing its thing, tries to make instances of the classes it's verifying, and giving its fields proper values too. In order to do that, it must recursively instantiate the class's fields and give those values too. Usually, that's not a problem, but sometimes you run into a loop, like in your case: in order to create a value for CustomerView, it must have a value for YearConfigView and vice versa.

            The way to avoid this, is by giving EqualsVerifier some 'prefab values'. I see you've already tried to do something like this, by adding .withGenericPrefabValues(CustomerView.class). (This method requires 2 parameters so I suspect you may have removed some code before posting it to StackOverflow 😉) This only works if CustomerView is itself a generic class, which I can't verify because you didn't post that particular piece of code. In any event, you shouldn't give generic prefab values or regular prefab values for the class you're testing.

            In general, though, your tests should both give a prefab value for the other class. That would look like this:

            Source https://stackoverflow.com/questions/66534465


            Spring Boot Multi Module Gradle Project classpath problem: Package Not Found, Symbol not Found
            Asked 2020-Jun-05 at 16:13

            I have an spring boot gradle project etl with a dependency of common core classes in another project named common.




            Answered 2020-Jun-05 at 16:13

            The problem was because of spring boot plugin being present in both etl and common projects. so I found out that in the cammon/build.gradle I have to add this piece of code:

            Source https://stackoverflow.com/questions/62219743


            Unable to run Spring Boot app after upgrading to 2.2.4: method does not exist
            Asked 2020-Feb-06 at 06:44

            I got an error after upgrading Spring Boot version from 2.1.11 to 2.2.4. Then I upgraded spring-cloud-starter-openfeign from 2.0.2 to 2.2.1, but it didn't help.

            The following method did not exist:



            Answered 2020-Feb-06 at 06:33

            Have a look at the Javadoc for versions 2.1.11 and 2.2.4 respectively. The older version still exposes this method taking an int argument but already states that it's deprecated and that you should use java.time.Duration instead.

            The method accepting java.time.Duration still exists in 2.2.4 and you should use that one instead.

            Source https://stackoverflow.com/questions/60088195

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network


            No vulnerabilities reported

            Install equalsverifier

            To build EqualsVerifier, you need Maven. Just call mvn from the command-line, without any parameters, and you're done. Alternatively, you can use any IDE with Maven support.


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