Junit research

[ZDenizYStenhaug]

Research integration testing and testing of the functions in the backend that depend on the database.

[ZDenizYStenhaug]

For the repository tests, the example below could be applied to most of the cases:

@Test
    public void testCreateUser() {
        Member member = new Member();
        member.setEmail("ravikumar@gmail.com");
        member.setPassword("ravi2020");
        member.setUsername("melon");

        Member savedUser = memberRepo.save(member);

        Member existUser = testEntityManager.find(Member.class, savedUser.getId());

        assertThat(member.getEmail()).isEqualTo(existUser.getEmail());
    }