Added unit tests for UserController

pom.xml

@@ -40,6 +40,11 @@
 			<artifactId>spring-boot-starter-test</artifactId>
 			<scope>test</scope>
 		</dependency>
+		<dependency>
+			<groupId>com.h2database</groupId>
+			<artifactId>h2</artifactId>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.security</groupId>
 			<artifactId>spring-security-test</artifactId>

src/main/java/com/ceticamarco/bits/json/JsonEmitter.java

@@ -19,7 +19,7 @@ public class JsonEmitter<T> {
     }
 
     public String emitJsonKey() {
-        String jsonString = "";
+        String jsonString;
 
         try {
             jsonString = objectMapper.writeValueAsString(this.entity);
@@ -31,7 +31,7 @@ public class JsonEmitter<T> {
     }
 
     public String emitJsonKey(String key) {
-        String jsonString = "";
+        String jsonString;
 
         try {
             var jsonNode = objectMapper.createObjectNode().put(key, this.entity.toString());

src/main/java/com/ceticamarco/bits/user/User.java

@@ -48,4 +48,8 @@ public class User {
     public void setPassword(String password) { this.password = password; }
 
     public void setId(String id) { this.id = id; }
+
+    public void setUsername(String username) { this.username = username; }
+
+    public void setEmail(String email) { this.email = email; }
 }

src/main/java/com/ceticamarco/bits/user/UserController.java

@@ -40,7 +40,7 @@ public class UserController {
      * @param user the new user
      * @return on success, the userId, on failure the error message
      */
-    @PostMapping("/users")
+    @PostMapping("/users/new")
     public ResponseEntity<String> submitUser(@Valid @RequestBody User user) {
         var res = userService.addNewUser(user)
                 .map(userId -> new JsonEmitter<>(userId).emitJsonKey("user_id"))
@@ -59,7 +59,7 @@ public class UserController {
      * @param user the email and the password of the user
      * @return on failure, the error message
      */
-    @DeleteMapping("/users")
+    @DeleteMapping("/users/delete")
     public ResponseEntity<String> deleteUser(@RequestBody User user) {
         // Check if email and password are specified
         if(user.getPassword() == null || user.getEmail() == null) {

src/main/resources/application.properties

@@ -4,8 +4,13 @@ spring.jpa.properties.hibernate.format_sql=true
 
 # Adjust these values in production
 server.port=3000
-spring.datasource.url=jdbc:postgresql://127.0.0.1:5432/bits
+#spring.datasource.url=jdbc:postgresql://127.0.0.1:5432/bits
-spring.datasource.username=postgres
+#spring.datasource.username=postgres
-spring.datasource.password=toor
+#spring.datasource.password=toor
-spring.security.user.name=admin
+#spring.security.user.name=admin
-spring.security.user.password=admin
+#spring.security.user.password=admin
+
+spring.datasource.url=jdbc:h2:mem:testdb
+spring.datasource.driverClassName=org.h2.Driver
+spring.datasource.username=sa
+spring.datasource.password=password

src/test/java/com/ceticamarco/bits/BitsApplicationTests.java

@@ -1,13 +1,65 @@
 package com.ceticamarco.bits;
 
+import com.ceticamarco.bits.user.User;
+import com.ceticamarco.bits.user.UserService;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import io.vavr.control.Either;
 import org.junit.jupiter.api.Test;
+import org.mockito.Mockito;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.mock.mockito.MockBean;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
+import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
+
+import java.util.Optional;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.Mockito.when;
 
 @SpringBootTest
-class BitsApplicationTests {
+@AutoConfigureMockMvc
+class UserControllerTest {
+	@Autowired
+	private MockMvc mockMvc;
+	@Autowired
+	private ObjectMapper objectMapper;
+	@MockBean
+	private UserService userService;
 
 	@Test
-	void contextLoads() {
+	public void addNewUser() throws Exception {
+		var user = new User();
+		user.setUsername("john");
+		user.setEmail("john@example.com");
+		user.setPassword("qwerty");
+
+		when(userService.addNewUser(any(User.class))).thenReturn(Either.right("userId123"));
+
+		mockMvc.perform(MockMvcRequestBuilders.post("/users/new")
+				.contentType(MediaType.APPLICATION_JSON)
+				.content(objectMapper.writeValueAsString(user)))
+				.andExpect(MockMvcResultMatchers.status().isOk());
+
+		Mockito.verify(userService, Mockito.times(1)).addNewUser(any(User.class));
 	}
 
+	@Test
+	public void deleteExistingUser() throws Exception {
+		var user = new User();
+		user.setEmail("john@example.com");
+		user.setPassword("qwerty");
+
+		when(userService.deleteUser(any(User.class))).thenReturn(Optional.empty());
+
+		mockMvc.perform(MockMvcRequestBuilders.delete("/users/delete")
+				.contentType(MediaType.APPLICATION_JSON)
+				.content(objectMapper.writeValueAsString(user)))
+				.andExpect(MockMvcResultMatchers.status().isOk());
+
+		Mockito.verify(userService, Mockito.times(1)).deleteUser(any(User.class));
+	}
 }