How to properly use the @SelectFile annotation in a Unit 5 test class?

Question

I am writing unit tests for a java class where I need to pass a file as a parameter. I recently came across the @SelectFile annotation in Spring Boot, which seems like a good solution for my use case. However, I am not sure how to use it properly. I am using junit 5 and Spring Boot framework.

Here's an example of what I'm trying to do:

@SelectFile(value = "/file.json")
class DataFormatTest {
    @Test
    void formatTest() throws Exception {
        Format format = new Format();
        //format.formatFile(file.json);
    }
}

Answer 1

You should use @ParametrizedTest and @MethodSource for your purpose. For ex

class SomeTest {

    public static Stream<Arguments> getFiles() {
        return Stream.of(Arguments.arguments(new File("/file.json")),
                Arguments.arguments(new File("/file2.json")));
    }

    @ParameterizedTest
    @MethodSource("getFiles")
    void doTest(File file) {
        assertFalse(file.exists());
    }
}

@SelectFile annotation is not for your issue.