ArchUnit VS JUnit

More examples you can find at official user guide https://www.archunit.org/userguide/html/000_Index.html or at github repository https://github.com/TNG/ArchUnit

I feel like the types of people that use ArchUnit are the types of people that misuse it anyway. Even the elevator pitch example in the project repository is of the backwards horizontal layering that leads any change to carpet bomb a project.

I looked around but couldn't find anything that was very popular. Are there any packages similar to ArchUnit (See: https://github.com/TNG/ArchUnit)?

JUnit 4

ArchUnit 0.15.0 released (2 min read) 🎉 https://github.com/TNG/ArchUnit/releases/tag/v0.15.0

Because I only wanna use the cmd java test, so I chose Junit4 which supports Plain-old JAR. I did test according to the Getting started document. But when I ran the javac -cp .:junit-4.XX.jar:hamcrest-core-1.3.jar CalculatorTest.java I got the error message CalculatorTest.java:4: error: package main does not exits. I tried to reorganize the folder and set Path according to others' experience 1, 2, but it still did not work.

Oops, another error. This is why we should read the manual 😅.

JUnit4

Delete those imports and remove the junit-jupiter-api dependency. Follow the instructions for JUnit 4.

Quite a lot of Java dependencies bring Junit 4 or Junit vintage engine as a transitive dependency.

The AHTest039.json file is the actual test. My testRunner() method (no relation to JUnit test runners) reads that JSON file, processes it, and asserts that the test passed. So my test class consists of a few Java methods, and what is essentially a list of JSON files to process.