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added tests
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‎session-handling-spring-security/pom.xml‎

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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.springframework.security</groupId>
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<artifactId>spring-security-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>

‎session-handling-spring-security/src/test/java/de/dominikschadow/javasecurity/sessionhandling/greetings/GreetingControllerTest.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.sessionhandling.greetings;
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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.security.test.context.support.WithMockUser;
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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 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.result.MockMvcResultMatchers.*;
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@WebMvcTest(GreetingController.class)
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class GreetingControllerTest {
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@Autowired
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private MockMvc mockMvc;
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@MockitoBean
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private GreetingService greetingService;
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@Test
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@WithMockUser
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void index_shouldReturnIndexView() 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("sessionId"));
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}
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@Test
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@WithMockUser(roles = "USER")
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void greetUser_shouldReturnUserViewWithGreeting() throws Exception {
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when(greetingService.greetUser()).thenReturn("Hello User!");
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mockMvc.perform(get("/user/user"))
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.andExpect(status().isOk())
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.andExpect(view().name("user/user"))
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.andExpect(model().attributeExists("sessionId"))
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.andExpect(model().attribute("greeting", "Hello User!"));
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}
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@Test
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@WithMockUser(roles = "ADMIN")
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void greetAdmin_shouldReturnAdminViewWithGreeting() throws Exception {
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when(greetingService.greetAdmin()).thenReturn("Hello Admin!");
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mockMvc.perform(get("/admin/admin"))
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.andExpect(status().isOk())
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.andExpect(view().name("admin/admin"))
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.andExpect(model().attributeExists("sessionId"))
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.andExpect(model().attribute("greeting", "Hello Admin!"));
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}
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@Test
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void index_withoutAuthentication_shouldReturnUnauthorized() throws Exception {
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mockMvc.perform(get("/"))
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.andExpect(status().isUnauthorized());
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}
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@Test
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void greetUser_withoutAuthentication_shouldReturnUnauthorized() throws Exception {
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mockMvc.perform(get("/user/user"))
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.andExpect(status().isUnauthorized());
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}
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@Test
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void greetAdmin_withoutAuthentication_shouldReturnUnauthorized() throws Exception {
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mockMvc.perform(get("/admin/admin"))
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.andExpect(status().isUnauthorized());
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}
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}

‎session-handling-spring-security/src/test/java/de/dominikschadow/javasecurity/sessionhandling/greetings/GreetingServiceTest.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.sessionhandling.greetings;
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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.security.access.AccessDeniedException;
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import org.springframework.security.authentication.AuthenticationCredentialsNotFoundException;
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import org.springframework.security.test.context.support.WithMockUser;
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import static org.junit.jupiter.api.Assertions.*;
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@SpringBootTest
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class GreetingServiceTest {
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@Autowired
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private GreetingService greetingService;
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@Test
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@WithMockUser(roles = "USER")
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void greetUser_withUserRole_shouldReturnGreeting() {
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String greeting = greetingService.greetUser();
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assertEquals("Spring Security says hello to the user!", greeting);
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}
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@Test
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@WithMockUser(roles = "ADMIN")
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void greetUser_withAdminRole_shouldReturnGreeting() {
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String greeting = greetingService.greetUser();
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assertEquals("Spring Security says hello to the user!", greeting);
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}
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@Test
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@WithMockUser(roles = "ADMIN")
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void greetAdmin_withAdminRole_shouldReturnGreeting() {
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String greeting = greetingService.greetAdmin();
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assertEquals("Spring Security says hello to the admin!", greeting);
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}
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@Test
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@WithMockUser(roles = "USER")
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void greetAdmin_withUserRole_shouldThrowAccessDeniedException() {
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assertThrows(AccessDeniedException.class, () -> greetingService.greetAdmin());
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}
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@Test
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void greetUser_withoutAuthentication_shouldThrowAuthenticationCredentialsNotFoundException() {
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assertThrows(AuthenticationCredentialsNotFoundException.class, () -> greetingService.greetUser());
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}
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@Test
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void greetAdmin_withoutAuthentication_shouldThrowAuthenticationCredentialsNotFoundException() {
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assertThrows(AuthenticationCredentialsNotFoundException.class, () -> greetingService.greetAdmin());
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}
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}

‎session-handling/pom.xml‎

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<groupId>javax.servlet</groupId>
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<artifactId>javax.servlet-api</artifactId>
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</dependency>
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<dependency>
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<groupId>org.junit.jupiter</groupId>
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<artifactId>junit-jupiter</artifactId>
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<scope>test</scope>
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</dependency>
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<dependency>
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<groupId>org.mockito</groupId>
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<artifactId>mockito-core</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>

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