$ mvn -o -B test -Dtest=PlainValidationNoCdiTest
(trimmed to the test's own RESULT line and the surefire summary)

RESULT[cdi-plain-validation-no-injection]: validating StockLevel(3) with Validation.buildDefaultValidatorFactory() (no CDI container running) throws jakarta.validation.ValidationException -> caused by java.lang.NullPointerException

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Test set: com.ankurm.hibernatedemo.validation.PlainValidationNoCdiTest
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Tests run: 1, Failures: 0, Errors: 0, Skipped: 0, Time elapsed: 0.345 s -- in com.ankurm.hibernatedemo.validation.PlainValidationNoCdiTest