Here’s a list of all the features that you can expect from JUnit Pioneer. For some of them you need to be quite familiar with JUnit 5, so make sure to read its user guide or this article series.

Cartesian product of all test parameters (deprecated in 1.5.0)
Extends JUnit Jupiter with `@CartesianProductTest`, a variant of parameterized tests that tests all combinations of its input
Cartesian product of all test parameters
Extends JUnit Jupiter with `@CartesianTest`, a variant of parameterized tests that tests all combinations of its input
Default Locale and TimeZone
Extends JUnit Jupiter with `@DefaultLocale`, `@DefaultTimeZone`, which change the values returned from Locale.getDefault() and TimeZone.getDefault()
Disable Parameterized Test Based on DisplayName
Extends JUnit Jupiter with `@DisableIfDisplayName`, which selectively disables parameterized tests
Disable Parameterized Test
Extends JUnit Jupiter with multiple extensions, which selectively disables parameterized tests
Temporarily Disable a Test
Extends JUnit Jupiter with `@DisabledUntil` to temporarily disable a test.
Clearing or Setting Environment Variables
Extends JUnit Jupiter with `@ClearEnvironmentVariable`, `@SetEnvironmentVariable`, which clear and set the values of environment variables
Issue Information
Extends JUnit Jupiter with `@Issue` to publish issue information.
Range Sources
Extends JUnit Jupiter with `@IntRangeSource`, `@FloatRangeSource`, etc., which provide series of numbers as argument sources for parameterized tests.
Publishing Report Entries
Extends JUnit Jupiter with `@ReportEntry`, which publishes report entries using `TestReporter`.
Retrying Failing Tests
Extends JUnit Jupiter with `@RetryingTest`, which retries a failing test a certain number of times; only marking it failed if none of them pass
Standard Input and Output
Extends JUnit Jupiter with `@StdIo`, which simulates standard input or catches standard output.
Measuring time with a Stopwatch
Extends JUnit Jupiter with `@Stopwatch` to measure elapsed time of a test method
Clearing or Setting System Properties
Extends JUnit Jupiter with `@ClearSystemProperty`, `@SetSystemProperty`, which clear and set the values of system properties
Temporary Files and Directories (removed in 1.0)
Extends JUnit Jupiter with `@TempDir`, which create and clean up a temporary directory.
Vintage @Test
Extends JUnit Jupiter with a drop-in replacement for JUnit 4's @Test annotation, including expected and timeout

To start using JUnit Pioneer, determine the latest version (e.g. on Maven Central) and add org.junit-pioneer : junit-pioneer as a test dependency.