spring boot test (#1322)

* spring boot test

* testing in spring boot article

spring-boot/pom.xml

@@ -106,6 +106,12 @@
             <version>${jquery.version}</version>
         </dependency>
 
+		<dependency>
+            <groupId>com.google.guava</groupId>
+            <artifactId>guava</artifactId>
+            <version>18.0</version>
+        </dependency>
+
         <dependency>
             <groupId>org.apache.tomcat</groupId>
             <artifactId>tomcat-servlet-api</artifactId>

spring-boot/src/main/java/org/baeldung/boot/components/FooComponent.java

@@ -0,0 +1,58 @@
+package org.baeldung.boot.components;
+
+import org.baeldung.boot.exceptions.CommonException;
+import org.baeldung.boot.exceptions.FooNotFoundException;
+import org.baeldung.boot.model.Foo;
+import org.baeldung.boot.repository.FooRepository;
+import org.slf4j.Logger;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+import com.google.common.base.Preconditions;
+
+@Component
+public class FooComponent {
+
+    @Autowired
+    private FooRepository fooRepository;
+    
+    private final static Logger logger = org.slf4j.LoggerFactory.getLogger(FooComponent.class);
+
+    public Foo getFooWithId(Integer id) {
+
+        Foo foo = null;
+
+        try {
+            foo = fooRepository.findOne(id);
+            Preconditions.checkNotNull(foo);
+            logger.info("Foo with Id {} found",id);
+        }catch(NullPointerException ex){
+            logger.error("Foo with Id {} was not found",id);
+            throw new FooNotFoundException("The given foo Id was not found");
+        } catch (Exception ex) {
+            logger.error("Error while retrieving Foo with Id {} found",id,ex);
+            throw new CommonException("Error while retrieving foo");
+        }
+
+        return foo;
+    }
+    
+    public Foo getFooWithName(String name) {
+
+        Foo foo = null;
+
+        try {
+            foo = fooRepository.findByName(name);
+            Preconditions.checkNotNull(foo);
+            logger.info("Foo with name {} found",name);
+        }catch(NullPointerException ex){
+            logger.error("Foo with name {} was not found",name);
+            throw new FooNotFoundException("The given foo name was not found");
+        } catch (Exception ex) {
+            logger.error("Error while retrieving Foo with name {} found",name,ex);
+            throw new CommonException("Error while retrieving foo");
+        }
+
+        return foo;
+    }
+}

spring-boot/src/main/java/org/baeldung/boot/exceptions/CommonException.java

@@ -0,0 +1,13 @@
+package org.baeldung.boot.exceptions;
+
+public class CommonException extends RuntimeException{
+
+    /**
+     * 
+     */
+    private static final long serialVersionUID = 3080004140659213332L;
+
+    public CommonException(String message){
+        super(message);
+    }
+}

spring-boot/src/main/java/org/baeldung/boot/exceptions/FooNotFoundException.java

@@ -0,0 +1,13 @@
+package org.baeldung.boot.exceptions;
+
+public class FooNotFoundException extends RuntimeException{
+
+    /**
+     * 
+     */
+    private static final long serialVersionUID = 9042200028456133589L;
+
+    public FooNotFoundException(String message){
+        super(message);
+    }
+}

spring-boot/src/main/java/org/baeldung/boot/model/Foo.java

@@ -21,6 +21,13 @@ public class Foo implements Serializable {
         this.name = name;
     }
 
+    
+    public Foo(Integer id, String name) {
+        super();
+        this.id = id;
+        this.name = name;
+    }
+
     public Integer getId() {
         return id;
     }

spring-boot/src/main/java/org/baeldung/boot/service/FooService.java

@@ -0,0 +1,52 @@
+package org.baeldung.boot.service;
+
+import org.baeldung.boot.components.FooComponent;
+import org.baeldung.boot.exceptions.CommonException;
+import org.baeldung.boot.exceptions.FooNotFoundException;
+import org.baeldung.boot.model.Foo;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.ExceptionHandler;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.ResponseStatus;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class FooService {
+
+    @Autowired
+    private FooComponent fooComponent;
+
+    @RequestMapping(value = "/{id}", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<?> getFooWithId(@PathVariable Integer id) {
+
+        Foo foo = fooComponent.getFooWithId(id);
+
+        return new ResponseEntity<Foo>(foo, HttpStatus.OK);
+    }
+    
+    @RequestMapping(value = "/", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
+    public ResponseEntity<?> getFooWithName(@RequestParam String name) {
+
+        Foo foo = fooComponent.getFooWithName(name);
+
+        return new ResponseEntity<Foo>(foo, HttpStatus.OK);
+    }
+
+    @ExceptionHandler(value = FooNotFoundException.class)
+    @ResponseStatus(code = HttpStatus.NOT_FOUND, reason = "Foo not found")
+    public void handleFooNotFoundException() {
+
+    }
+
+    @ExceptionHandler(value = CommonException.class)
+    @ResponseStatus(code = HttpStatus.INTERNAL_SERVER_ERROR, reason = "Common exception")
+    public void handleCommonException() {
+
+    }
+}

spring-boot/src/test/java/org/baeldung/boot/FooComponentTests.java

@@ -0,0 +1,68 @@
+package org.baeldung.boot;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.mockito.Matchers.anyInt;
+import static org.mockito.Mockito.doReturn;
+
+import java.util.HashMap;
+import java.util.Map;
+
+import org.baeldung.boot.components.FooComponent;
+import org.baeldung.boot.model.Foo;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.mock.mockito.SpyBean;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes = DemoApplication.class, webEnvironment = WebEnvironment.RANDOM_PORT)
+public class FooComponentTests {
+
+    @Autowired
+    private TestRestTemplate testRestTemplate;
+
+    @SpyBean
+    private FooComponent fooComponent;
+
+    @Before
+    public void init() {
+        Foo foo = new Foo();
+        foo.setId(5);
+        foo.setName("MOCKED_FOO");
+
+        doReturn(foo).when(fooComponent).getFooWithId(anyInt());
+
+        // doCallRealMethod().when(fooComponent).getFooWithName(anyString());
+    }
+
+    @Test
+    public void givenInquiryingFooWithId_whenFooComponentIsMocked_thenAssertMockedResult() {
+        Map<String, String> pathVariables = new HashMap<String, String>();
+        pathVariables.put("id", "1");
+        ResponseEntity<Foo> fooResponse = testRestTemplate.getForEntity("/{id}", Foo.class, pathVariables);
+
+        assertNotNull(fooResponse);
+        assertEquals(HttpStatus.OK, fooResponse.getStatusCode());
+        assertEquals(5, fooResponse.getBody().getId().longValue());
+        assertEquals("MOCKED_FOO", fooResponse.getBody().getName());
+    }
+
+    @Test
+    public void givenInquiryingFooWithName_whenFooComponentIsMocked_thenAssertMockedResult() {
+        Map<String, String> pathVariables = new HashMap<String, String>();
+        pathVariables.put("name", "Foo_Name");
+        ResponseEntity<Foo> fooResponse = testRestTemplate.getForEntity("/?name={name}", Foo.class, pathVariables);
+
+        assertNotNull(fooResponse);
+        assertEquals(HttpStatus.OK, fooResponse.getStatusCode());
+        assertEquals(1, fooResponse.getBody().getId().longValue());
+    }
+}

spring-boot/src/test/java/org/baeldung/boot/FooIntegrationTest.java

@@ -0,0 +1,43 @@
+package org.baeldung.boot;
+import java.util.HashMap;
+import java.util.Map;
+
+import org.baeldung.boot.DemoApplication;
+import org.baeldung.boot.model.Foo;
+import org.junit.Assert;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.client.TestRestTemplate;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest(classes=DemoApplication.class,webEnvironment = WebEnvironment.RANDOM_PORT)
+public class FooIntegrationTest {
+
+    @Autowired
+    private TestRestTemplate testRestTemplate;
+    
+    
+    @Test
+    public void givenInquiryingFooWithId_whenIdIsValid_thenHttpStatusOK(){
+        Map<String,String> pathVariables = new HashMap<String,String>();
+        pathVariables.put("id", "1");
+        ResponseEntity<Foo> fooResponse = testRestTemplate.getForEntity("/{id}", Foo.class, pathVariables);
+        Assert.assertNotNull(fooResponse);
+        Assert.assertEquals(HttpStatus.OK,fooResponse.getStatusCode());
+    }
+    
+    @Test
+    public void givenInquiryingFooWithName_whenNameIsValid_thenHttpStatusOK(){
+        Map<String,String> pathVariables = new HashMap<String,String>();
+        pathVariables.put("name", "Foo_Name");
+        ResponseEntity<Foo> fooResponse = testRestTemplate.getForEntity("/?name={name}", Foo.class, pathVariables);
+        Assert.assertNotNull(fooResponse);
+        Assert.assertEquals(HttpStatus.OK,fooResponse.getStatusCode());
+    }
+}

spring-boot/src/test/java/org/baeldung/boot/FooJPATest.java

@@ -0,0 +1,34 @@
+package org.baeldung.boot;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+import org.baeldung.boot.model.Foo;
+import org.baeldung.boot.repository.FooRepository;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.orm.jpa.DataJpaTest;
+import org.springframework.boot.test.autoconfigure.orm.jpa.TestEntityManager;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@DataJpaTest
+public class FooJPATest {
+
+    @Autowired
+    private TestEntityManager entityManager;
+
+    @Autowired
+    private FooRepository repository;
+
+    @Test
+    public void findFooByName() {
+        this.entityManager.persist(new Foo("Foo_Name_2"));
+        Foo foo = this.repository.findByName("Foo_Name_2");
+        assertNotNull(foo);
+        assertEquals("Foo_Name_2",foo.getName());
+        // Due to having Insert query for Foo with Id 1, so TestEntityManager generates new Id of 2       
+        assertEquals(2l,foo.getId().longValue());
+    }
+}

spring-boot/src/test/java/org/baeldung/boot/FooJsonTest.java

@@ -0,0 +1,35 @@
+package org.baeldung.boot;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.baeldung.boot.model.Foo;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.json.JsonTest;
+import org.springframework.boot.test.json.JacksonTester;
+import org.springframework.test.context.junit4.SpringRunner;
+
+@RunWith(SpringRunner.class)
+@JsonTest
+public class FooJsonTest {
+
+    @Autowired
+    private JacksonTester<Foo> json;
+  
+
+    @Test
+    public void testSerialize() throws Exception {
+        Foo foo = new Foo(3, "Foo_Name_3");
+        assertThat(this.json.write(foo)).isEqualToJson("expected.json");
+        assertThat(this.json.write(foo)).hasJsonPathStringValue("@.name");
+        assertThat(this.json.write(foo)).extractingJsonPathStringValue("@.name").isEqualTo("Foo_Name_3");
+    }
+
+    @Test
+    public void testDeserialize() throws Exception {
+        String content = "{\"id\":4,\"name\":\"Foo_Name_4\"}";
+        assertThat(this.json.parseObject(content).getName()).isEqualTo("Foo_Name_4");
+        assertThat(this.json.parseObject(content).getId()==4);
+    }
+}

spring-boot/src/test/resources/application.properties

@@ -1,3 +1,5 @@
 spring.mail.host=localhost
 spring.mail.port=8025
 spring.mail.properties.mail.smtp.auth=false
+
+security.basic.enabled=false

spring-boot/src/test/resources/import.sql

@@ -0,0 +1 @@
+Insert into Foo values(1,'Foo_Name');

spring-boot/src/test/resources/org/baeldung/boot/expected.json

@@ -0,0 +1,4 @@
+{
+	"id":3,
+	"name":"Foo_Name_3"
+}