Make warnings raised during test execution fail these tests

[thekid]

This pull request adds back a previously unported feature from xp-framework/unittest: Any warning raised within a test will mark the test as failed.

Test

use test\Test;

class WarningsTest {

  #[Test]
  public function raise() {
    trigger_error('Test', E_USER_DEPRECATED);
  }
}

Output

See also

• Refactor reason field in TestWarning to contain a lang.Throwable unittest#21
• Test outcome rfc#188

[thekid]

Released in https://github.com/xp-framework/test/releases/tag/v1.5.0