Merge pull request eugenp#5472 from swapanpramanick2004/BAEL-2221

Bael 2221

spring-resttemplate/src/main/java/org/baeldung/web/model/Employee.java

@@ -0,0 +1,48 @@
+package org.baeldung.web.model;
+
+import java.util.Date;
+import java.util.Objects;
+
+public class Employee {
+
+        private String id;
+        private String name;
+
+        public Employee(String id, String name) {
+                this.id = id;
+                this.name = name;
+        }
+
+        public Employee() {
+        }
+
+        public String getId() {
+                return id;
+        }
+
+        public void setId(String id) {
+                this.id = id;
+        }
+
+        public String getName() {
+                return name;
+        }
+
+        public void setName(String name) {
+                this.name = name;
+        }
+
+        @Override public boolean equals(Object o) {
+                if (this == o)
+                        return true;
+                if (o == null || getClass() != o.getClass())
+                        return false;
+                Employee employee = (Employee) o;
+                return Objects.equals(id, employee.id);
+        }
+
+        @Override public int hashCode() {
+
+                return Objects.hash(id);
+        }
+}

spring-resttemplate/src/main/java/org/baeldung/web/service/EmployeeService.java

@@ -0,0 +1,29 @@
+package org.baeldung.web.service;
+
+import org.baeldung.web.model.Employee;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+import org.springframework.web.client.RestTemplate;
+
+@Service
+public class EmployeeService {
+
+    static final String EMP_URL_PREFIX = "http://localhost:8080/employee";
+    static final String URL_SEP = "/";
+
+    private static final Logger logger = LoggerFactory.getLogger(EmployeeService.class);
+
+    @Autowired
+    private RestTemplate restTemplate;
+
+    public Employee getEmployee(String id) {
+
+        ResponseEntity<Employee> resp = restTemplate.getForEntity("http://localhost:8080/employee/" + id,
+          Employee.class);
+        return resp.getStatusCode() == HttpStatus.OK ? resp.getBody() : null;
+    }
+}

spring-resttemplate/src/test/java/org/baeldung/SpringTestConfig.java

@@ -0,0 +1,19 @@
+package org.baeldung;
+
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.web.client.RestTemplate;
+
+@Configuration
+@EnableAutoConfiguration
+@ComponentScan("org.baeldung")
+public class SpringTestConfig {
+
+    @Bean
+    public RestTemplate restTemplate() {
+        return new RestTemplate();
+    }
+
+}

spring-resttemplate/src/test/java/org/baeldung/web/service/EmployeeServiceMockRestServiceServerUnitTest.java

@@ -0,0 +1,66 @@
+package org.baeldung.web.service;
+
+import static org.springframework.test.web.client.match.MockRestRequestMatchers.method;
+import static org.springframework.test.web.client.match.MockRestRequestMatchers.requestTo;
+import static org.springframework.test.web.client.response.MockRestResponseCreators.withStatus;
+
+import java.net.URI;
+
+import org.baeldung.SpringTestConfig;
+import org.baeldung.web.model.Employee;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.client.ExpectedCount;
+import org.springframework.test.web.client.MockRestServiceServer;
+import org.springframework.web.client.RestTemplate;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+
+@RunWith(SpringRunner.class)
+@ContextConfiguration(classes = SpringTestConfig.class)
+public class EmployeeServiceMockRestServiceServerUnitTest {
+
+    private static final Logger logger = LoggerFactory.getLogger(EmployeeServiceMockRestServiceServerUnitTest.class);
+
+    @Autowired
+    private EmployeeService empService;
+
+    @Autowired
+    private RestTemplate restTemplate;
+
+    private MockRestServiceServer mockServer;
+
+    private ObjectMapper mapper = new ObjectMapper();
+
+    @Before
+    public void init() {
+        mockServer = MockRestServiceServer.createServer(restTemplate);
+    }
+
+    @Test
+    public void givenMockingIsDoneByMockRestServiceServer_whenGetIsCalled_shouldReturnMockedObject() throws Exception {
+        Employee emp = new Employee("E001", "Eric Simmons");
+
+        mockServer.expect(ExpectedCount.once(),
+          requestTo(new URI("http://localhost:8080/employee/E001")))
+            .andExpect(method(HttpMethod.GET))
+            .andRespond(withStatus(HttpStatus.OK)
+              .contentType(MediaType.APPLICATION_JSON)
+              .body(mapper.writeValueAsString(emp)));
+
+        Employee employee = empService.getEmployee("E001");
+        mockServer.verify();
+        Assert.assertEquals(emp, employee);
+    }
+
+}

spring-resttemplate/src/test/java/org/baeldung/web/service/EmployeeServiceUnitTest.java

@@ -0,0 +1,41 @@
+package org.baeldung.web.service;
+
+import org.baeldung.web.model.Employee;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.MockitoAnnotations;
+import org.mockito.runners.MockitoJUnitRunner;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.client.RestTemplate;
+
+@RunWith(MockitoJUnitRunner.class)
+public class EmployeeServiceUnitTest {
+
+    private static final Logger logger = LoggerFactory.getLogger(EmployeeServiceUnitTest.class);
+
+    @Mock
+    private RestTemplate restTemplate;
+
+    @InjectMocks
+    private EmployeeService empService = new EmployeeService();
+
+    @Test
+    public void givenMockingIsDoneByMockito_whenGetIsCalled_shouldReturnMockedObject() throws Exception {
+        Employee emp = new Employee("E001", "Eric Simmons");
+        Mockito.when(restTemplate.getForEntity("http://localhost:8080/employee/E001", Employee.class))
+          .thenReturn(new ResponseEntity(emp, HttpStatus.OK));
+
+        Employee employee = empService.getEmployee("E001");
+
+        Assert.assertEquals(emp, employee);
+    }
+
+}

spring-resttemplate/src/test/resources/logback-test.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<configuration>
+    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
+        <encoder>
+            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n
+            </pattern>
+        </encoder>
+    </appender>
+
+    <logger name="org.springframework.web.filter.CommonsRequestLoggingFilter">
+		<level value="DEBUG" />
+	</logger>
+
+    <logger name="org.springframework" level="WARN" />
+    <logger name="org.springframework.transaction" level="WARN" />
+
+    <!-- in order to debug some marshalling issues, this needs to be TRACE -->
+    <logger name="org.springframework.web.servlet.mvc" level="WARN" />
+
+    <root level="INFO">
+        <appender-ref ref="STDOUT" />
+    </root>
+</configuration>