Industry Simulation

📋 The Real Developer Workflow (5–20 min)

💻 Live Coding — Simulate Fixing a Bug (20–40 min)

// TICKET SMS-101: BUG — Search endpoint returns 500 when query is empty
// Expected: return all students when query is empty
// Actual: NullPointerException in StudentService.search()

// BROKEN code (current main branch):
public List<Student> search(String query) {
    return repo.findAll().stream()
        .filter(s -> s.getName().contains(query))  // crashes if query=null
        .collect(Collectors.toList());
}

// FIXED code (your branch: feature/SMS-101-fix-search):
public List<Student> search(String query) {
    if (query == null || query.isBlank()) return repo.findAll();
    return repo.findByNameContainingIgnoreCase(query);
}

// Unit test you write alongside the fix
@SpringBootTest
class StudentServiceTest {
    @Autowired private StudentService service;

    @Test
    void searchWithNullQueryReturnsAll() {
        List<Student> result = service.search(null);
        assertThat(result).isNotNull();
    }

    @Test
    void searchWithValidQueryFiltersResults() {
        List<Student> result = service.search("Priya");
        assertThat(result).allMatch(s -> s.getName().contains("Priya"));
    }
}