Tag Archives: junit

Testing Spring reactive WebClient

January 15, 2022 – 3:09 pm

The reactive WebClient does not yet have the mature test support that RestTemplate now has. There is not yet a standard recipe to test Spring WebClient applications. No doubt support will be improved in future versions but for now, here’s what works for me.

Tags ExchangeFunction, junit, Reactive, spring, unit test, WebClient | Comment (0)

How To Testing

Unit test time based logic

October 23, 2018 – 7:57 pm

A standard unit testing problem is how to unit test code that has a dependency on dates or times. Consider a method that returns a greeting according to the time of day. If we were to call this method from a test fixture (say JUnit), it would return different values depending on when the test was run. This is not ideal. Unit tests should pass or fail consistently.

Here’s a simple solution for testing time based code.

Tags junit, LocalTime, mock, mockito, Supplier | Comment (0)

How To Testing

Test log4j2 with JUnit using a custom appender

April 29, 2018 – 6:57 pm

In previous articles, I’ve described how to test System.out with JUnit and how to test log4j with JUnit. This article describes how to test log4j2 logging with JUnit. This largely follows the same technique as testing log4j logging but using the the newer log4j2 APIs. Differences between log4j and log4j2 log4j2 follows a similar design read more »

Tags appender, junit, log4j2, Rule, voicexmlriot | Comments (5)

How To Testing

Test log4j with JUnit using a custom appender

January 15, 2018 – 8:21 pm

Following a recent article on how to Test System.out with JUnit, here’s a follow up on how to test log4J with JUnit. This article describes a technique to test log4J output in a JUnit test by adding a custom appender. This allows us to verify that log4j output contains expected Strings.

Tags appender, junit, log4j, Rule, voicexmlriot | Comment (1)

How To Testing

Test System.out with JUnit

May 12, 2017 – 3:54 pm

It can be useful to verify output to System.out in a unit test. For example, if you’re testing application logging or if you’re using log output to sense some other behaviour. It can be tricky to properly mock behaviour of System.out but fortunately, it is possible to test System.out using JUnit.

Tags ExternalResource, junit, mock, PrintStream, Rule, system.out | Comments (3)

How To Java Technologies Testing Tools

Test Coverage

December 12, 2010 – 11:13 pm

Using code test coverage analysis we’ve got a new metric we can use to judge the quality of our code. As with any metric though, some discretion is required… I find that this sort of tool is mostly useful to catch dumb mistakes.

Tags eclemma, eclipse, emma, emma-maven-plugin, intellij idea, junit, maven, netbeans, test, test code coverage, testing, testng | Comments (2)

How To Java Technologies Testing

DbUnit

December 1, 2010 – 12:22 am

DbUnit is a JUnit extension targeted at database-driven projects that, among other things, puts your database into a known state between test runs.

Tags DBUnit, hibernate, junit, spring, Spring TestContext, testing | Comments (5)

How To Java Technologies Testing

JUnit testing Hibernate and Spring

November 15, 2009 – 7:27 pm

A nice recipe for unit testing Spring configured Hibernate.

Tags hibernate, HyperSQL, junit, spring, testing | Comment (1)

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Tag Archives: junit

Testing Spring reactive WebClient

Unit test time based logic

Test log4j2 with JUnit using a custom appender

Test log4j with JUnit using a custom appender

Test System.out with JUnit

Test Coverage

DbUnit

JUnit testing Hibernate and Spring

Don’t Panic!

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