Handle upgrade of hibernate-validator from 6.1.7.Final to 7.0.1.Final

[nya-elimu]

This version of the hibernate-validator will result in validation to stop working, so we need to handle this before bumping the version.

• Find a way to upgrade Hibernate validation to the latest version without breaking the functionality of annotations like @NotNull and @NotEmpty.
• Add unit tests for verifying that it is not possible to store entities with missing @NotNull/@NotEmpty properties.
• Remove the @Ignore annotation from this unit test: https://github.com/elimu-ai/webapp/blob/master/src/test/java/ai/elimu/dao/ContributorDaoTest.java#L26

See https://hibernate.org/validator/documentation/migration-guide/

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Relates to #1211

[macdude357]

@nya-elimuai I upgraded the version locally but don't see any test errors. Is there a test that should fail to demonstrate the issue with upgrading?

[nya-elimu]

@nya-elimuai I upgraded the version locally but don't see any test errors. Is there a test that should fail to demonstrate the issue with upgrading?

@macdude357 Apologies for lack of details in this issue. So let me help you out with a little information 🙂

One way to test this error is to launch the webapp, go to http://localhost:8080/webapp/content/word/list, and then adding a new Word without including any of the compulsory fields (those marked with @NotEmpty or @NotNull).

Here is how to reproduce:

1. Submit the "Create Word" form without willing any of the details:

   

2. The Word will still be stored in the database, and will erroneously appear in the list of Words:

   

And your point about unit tests not failing is a good one. Actually, we should add a couple of unit tests to cover this specific issue. By for example trying to store a Word in the database without first populating the required properties, and then use something like @Test(expected=ConstraintViolationException.class).

CC @UmenR

[nya-elimu]

As a related topic, also note that Hibernate validation is currently not working in our MockMvc unit tests: https://github.com/elimu-ai/webapp/blob/main/src/test/java/ai/elimu/web/content/word/WordCreateControllerTest.java#L53

@Test
    public void testHandleSubmit_emptyText() throws Exception {
        RequestBuilder requestBuilder = MockMvcRequestBuilders
                .post("/content/word/create")
                .param("timeStart", String.valueOf(System.currentTimeMillis()))
                .param("text", "")
                .contentType(MediaType.APPLICATION_FORM_URLENCODED_VALUE);
//        MvcResult mvcResult = mockMvc.perform(requestBuilder).andReturn();
//        assertEquals(HttpStatus.BAD_REQUEST.value(), mvcResult.getResponse().getStatus());
//        assertEquals("content/word/create", mvcResult.getModelAndView().getViewName());
    }

More info here: https://stackoverflow.com/questions/24049480/spring-mockmvc-doesnt-consider-validation-in-my-test