spring boot test (#1322)

* spring boot test

* testing in spring boot article

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() {
+
+    }
+}