Introduce support for parameterized classes

[jkschneider]

Overview

Currently, the target of @ParameterizedTest is constrained to methods. When creating technology compatibility kits, it would be awesome to be able to apply this (or a similar annotation) to the test class so that all tests in that class are parameterized the same way.

Proposal

Rather than:

class MyTest {
   @ParameterizedTest
   @ArgumentSource(...)
   void feature1() { ... }

   @ParameterizedTest
   @ArgumentSource(...)
   void feature2() { ... }
}

Something like:

@ParameterizedTest
@ArgumentSource(...)
class MyTest {
   @Test // ?
   void feature1() { ... }
   
   @Test
   void feature2() { ... }
}

Related Issues

• Introduce support for parameterized tests #14
• Introduce extension API for container templates #871
• Influence invocation order for TestTemplate executions #1141
• Parameterized BeforeEach or AfterEach only #3157
• Introduce per-invocation lifecycle callbacks for container templates #4320

[marcphilipp]

I can imagine supporting something like

@ArgumentSource(...)
class MyTest {
   @ParameterizedTest
   void feature1() { ... }
   
   @ParameterizedTest
   void feature2() { ... }
}

Would that suit your needs?

[jkschneider]

I think that is a good solution.

[nipafx]

Related issues: #871, #853

[jkschneider]

For real-life examples, see GaugeTest and most of the other tests in its package.

[marcphilipp]

@jkschneider Do you have time to work on a PR?