unit-test-parameterized

Run a JUnit 5 test with multiple inputs by applying the @ParameterizedTest annotation with data providers like @ValueSource, @CsvSource, or @MethodSource. This approach executes the same test method repeatedly across diverse data sets.

The best way to test multiple scenarios without duplicating code is using parameterized tests. They execute a single test method with multiple sets of arguments, reducing code duplication while improving overall test coverage.

Use @CsvSource to validate different email formats by providing comma-separated values of inputs and expected results to your @ParameterizedTest method. This efficiently checks numerous valid and invalid email strings against expected validity.

Yes, JUnit 5 supports data-driven testing for boundary values and error conditions. By leveraging @ParameterizedTest with sources like @MethodSource, you can efficiently pass diverse data sets to test edge cases and error states.

Use @MethodSource instead of @ValueSource when your Java unit testing requires complex input arguments, multiple columns of data, or dynamically generated boundary values. @ValueSource is limited to single arrays of simple types like strings.