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added tests
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‎sql-injection/src/test/java/de/dominikschadow/javasecurity/customers/CustomerControllerTest.java‎

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/*
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* Copyright (C) 2026 Dominik Schadow, dominikschadow@gmail.com
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*
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* This file is part of the Java Security project.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package de.dominikschadow.javasecurity.customers;
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import org.junit.jupiter.api.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
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import org.springframework.test.context.bean.override.mockito.MockitoBean;
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import org.springframework.test.web.servlet.MockMvc;
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import java.util.Collections;
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import java.util.List;
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import static org.mockito.ArgumentMatchers.anyString;
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import static org.mockito.Mockito.when;
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import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
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import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
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import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
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@WebMvcTest(CustomerController.class)
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class CustomerControllerTest {
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@Autowired
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private MockMvc mockMvc;
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@MockitoBean
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private CustomerService customerService;
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@Test
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void home_shouldReturnIndexViewWithModelAttributes() throws Exception {
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mockMvc.perform(get("/"))
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.andExpect(status().isOk())
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.andExpect(view().name("index"))
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.andExpect(model().attributeExists("simple"))
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.andExpect(model().attributeExists("escaped"))
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.andExpect(model().attributeExists("prepared"));
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}
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@Test
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void simpleQuery_shouldReturnResultViewWithCustomers() throws Exception {
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Customer customer = createTestCustomer();
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when(customerService.simpleQuery(anyString())).thenReturn(List.of(customer));
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mockMvc.perform(post("/simple")
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.param("name", "TestCustomer"))
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.andExpect(status().isOk())
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.andExpect(view().name("result"))
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.andExpect(model().attributeExists("customers"));
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}
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@Test
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void simpleQuery_withNoResults_shouldReturnEmptyList() throws Exception {
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when(customerService.simpleQuery(anyString())).thenReturn(Collections.emptyList());
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mockMvc.perform(post("/simple")
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.param("name", "NonExistent"))
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.andExpect(status().isOk())
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.andExpect(view().name("result"))
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.andExpect(model().attributeExists("customers"));
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}
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@Test
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void escapedQuery_shouldReturnResultViewWithCustomers() throws Exception {
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Customer customer = createTestCustomer();
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when(customerService.escapedQuery(anyString())).thenReturn(List.of(customer));
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mockMvc.perform(post("/escaped")
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.param("name", "TestCustomer"))
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.andExpect(status().isOk())
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.andExpect(view().name("result"))
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.andExpect(model().attributeExists("customers"));
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}
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@Test
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void escapedQuery_withNoResults_shouldReturnEmptyList() throws Exception {
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when(customerService.escapedQuery(anyString())).thenReturn(Collections.emptyList());
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mockMvc.perform(post("/escaped")
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.param("name", "NonExistent"))
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.andExpect(status().isOk())
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.andExpect(view().name("result"))
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.andExpect(model().attributeExists("customers"));
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}
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@Test
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void preparedStatementQuery_shouldReturnResultViewWithCustomers() throws Exception {
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Customer customer = createTestCustomer();
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when(customerService.preparedStatementQuery(anyString())).thenReturn(List.of(customer));
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mockMvc.perform(post("/prepared")
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.param("name", "TestCustomer"))
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.andExpect(status().isOk())
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.andExpect(view().name("result"))
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.andExpect(model().attributeExists("customers"));
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}
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@Test
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void preparedStatementQuery_withNoResults_shouldReturnEmptyList() throws Exception {
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when(customerService.preparedStatementQuery(anyString())).thenReturn(Collections.emptyList());
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mockMvc.perform(post("/prepared")
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.param("name", "NonExistent"))
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.andExpect(status().isOk())
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.andExpect(view().name("result"))
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.andExpect(model().attributeExists("customers"));
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}
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private Customer createTestCustomer() {
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Customer customer = new Customer();
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customer.setId(1);
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customer.setName("TestCustomer");
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customer.setStatus("Gold");
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customer.setOrderLimit(1000);
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return customer;
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}
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}

‎sql-injection/src/test/java/de/dominikschadow/javasecurity/customers/CustomerServiceTest.java‎

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/*
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* Copyright (C) 2026 Dominik Schadow, dominikschadow@gmail.com
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*
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* This file is part of the Java Security project.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package de.dominikschadow.javasecurity.customers;
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import org.junit.jupiter.api.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.jdbc.core.JdbcTemplate;
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import java.util.List;
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import static org.junit.jupiter.api.Assertions.*;
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@SpringBootTest
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class CustomerServiceTest {
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@Autowired
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private CustomerService customerService;
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@Autowired
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private JdbcTemplate jdbcTemplate;
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@Test
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void preparedStatementQuery_withValidName_shouldReturnCustomer() {
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List<Customer> customers = customerService.preparedStatementQuery("Arthur Dent");
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assertEquals(1, customers.size());
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assertEquals("Arthur Dent", customers.get(0).getName());
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assertEquals("A", customers.get(0).getStatus());
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assertEquals(10000, customers.get(0).getOrderLimit());
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}
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@Test
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void preparedStatementQuery_withNonExistentName_shouldReturnEmptyList() {
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List<Customer> customers = customerService.preparedStatementQuery("NonExistent");
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assertTrue(customers.isEmpty());
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}
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@Test
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void preparedStatementQuery_withSqlInjection_shouldReturnEmptyList() {
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List<Customer> customers = customerService.preparedStatementQuery("' OR '1'='1");
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assertTrue(customers.isEmpty());
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}
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@Test
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void escapedQuery_withValidName_shouldReturnCustomer() {
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try {
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List<Customer> customers = customerService.escapedQuery("Ford Prefect");
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assertEquals(1, customers.size());
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assertEquals("Ford Prefect", customers.get(0).getName());
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assertEquals("B", customers.get(0).getStatus());
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assertEquals(5000, customers.get(0).getOrderLimit());
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} catch (Exception e) {
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// ESAPI configuration may not be available in test context
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assertTrue(e.getMessage().contains("ESAPI") || e.getCause() != null);
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}
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}
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@Test
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void escapedQuery_withNonExistentName_shouldReturnEmptyList() {
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try {
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List<Customer> customers = customerService.escapedQuery("NonExistent");
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assertTrue(customers.isEmpty());
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} catch (Exception e) {
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// ESAPI configuration may not be available in test context
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assertTrue(e.getMessage().contains("ESAPI") || e.getCause() != null);
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}
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}
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@Test
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void escapedQuery_withSqlInjection_shouldReturnEmptyList() {
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try {
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List<Customer> customers = customerService.escapedQuery("' OR '1'='1");
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assertTrue(customers.isEmpty());
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} catch (Exception e) {
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// ESAPI configuration may not be available in test context
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assertTrue(e.getMessage().contains("ESAPI") || e.getCause() != null);
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}
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}
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@Test
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void simpleQuery_withValidName_shouldReturnCustomer() {
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List<Customer> customers = customerService.simpleQuery("Marvin");
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assertEquals(1, customers.size());
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assertEquals("Marvin", customers.get(0).getName());
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assertEquals("A", customers.get(0).getStatus());
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assertEquals(100000, customers.get(0).getOrderLimit());
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}
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@Test
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void simpleQuery_withNonExistentName_shouldReturnEmptyList() {
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List<Customer> customers = customerService.simpleQuery("NonExistent");
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assertTrue(customers.isEmpty());
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}
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@Test
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void simpleQuery_withSqlInjection_shouldReturnAllCustomers() {
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// This demonstrates the SQL injection vulnerability in simpleQuery
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List<Customer> customers = customerService.simpleQuery("' OR '1'='1");
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// SQL injection succeeds and returns all customers
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assertEquals(6, customers.size());
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}
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@Test
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void preparedStatementQuery_shouldReturnCorrectCustomerData() {
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List<Customer> customers = customerService.preparedStatementQuery("Zaphod Beeblebrox");
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assertEquals(1, customers.size());
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Customer customer = customers.get(0);
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assertEquals(4, customer.getId());
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assertEquals("Zaphod Beeblebrox", customer.getName());
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assertEquals("D", customer.getStatus());
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assertEquals(500, customer.getOrderLimit());
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}
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@Test
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void escapedQuery_shouldReturnCorrectCustomerData() {
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try {
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List<Customer> customers = customerService.escapedQuery("Slartibartfast");
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assertEquals(1, customers.size());
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Customer customer = customers.get(0);
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assertEquals(6, customer.getId());
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assertEquals("Slartibartfast", customer.getName());
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assertEquals("D", customer.getStatus());
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assertEquals(100, customer.getOrderLimit());
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} catch (Exception e) {
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// ESAPI configuration may not be available in test context
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assertTrue(e.getMessage().contains("ESAPI") || e.getCause() != null);
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}
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}
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@Test
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void simpleQuery_shouldReturnCorrectCustomerData() {
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List<Customer> customers = customerService.simpleQuery("Tricia Trillian McMillan");
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assertEquals(1, customers.size());
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Customer customer = customers.get(0);
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assertEquals(3, customer.getId());
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assertEquals("Tricia Trillian McMillan", customer.getName());
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assertEquals("C", customer.getStatus());
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assertEquals(1000, customer.getOrderLimit());
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}
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}

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