pageable controller and test (#1862)

* pageable controller and test

* removed unused imports

spring-security-rest-full/src/main/java/org/baeldung/persistence/service/IFooService.java

@@ -2,9 +2,13 @@ package org.baeldung.persistence.service;
 
 import org.baeldung.persistence.IOperations;
 import org.baeldung.persistence.model.Foo;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 
 public interface IFooService extends IOperations<Foo> {
 
     Foo retrieveByName(String name);
+    
+    Page<Foo> findPaginated(Pageable pageable);
 
 }

spring-security-rest-full/src/main/java/org/baeldung/persistence/service/impl/FooService.java

@@ -7,6 +7,8 @@ import org.baeldung.persistence.model.Foo;
 import org.baeldung.persistence.service.IFooService;
 import org.baeldung.persistence.service.common.AbstractService;
 import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.data.repository.PagingAndSortingRepository;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.stereotype.Service;
@@ -47,4 +49,9 @@ public class FooService extends AbstractService<Foo> implements IFooService {
         return Lists.newArrayList(getDao().findAll());
     }
 
+    @Override
+    public Page<Foo> findPaginated(Pageable pageable) {
+        return dao.findAll(pageable);
+    }
+
 }

spring-security-rest-full/src/main/java/org/baeldung/web/controller/FooController.java

@@ -14,9 +14,11 @@ import org.baeldung.web.util.RestPreconditions;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.context.ApplicationEventPublisher;
 import org.springframework.data.domain.Page;
+import org.springframework.data.domain.Pageable;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.MediaType;
 import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -81,6 +83,18 @@ public class FooController {
 
         return resultPage.getContent();
     }
+    
+    @GetMapping("/pageable")
+    @ResponseBody
+    public List<Foo> findPaginatedWithPageable(Pageable pageable, final UriComponentsBuilder uriBuilder, final HttpServletResponse response) {
+        final Page<Foo> resultPage = service.findPaginated(pageable);
+        if (pageable.getPageNumber() > resultPage.getTotalPages()) {
+            throw new MyResourceNotFoundException();
+        }
+        eventPublisher.publishEvent(new PaginatedResultsRetrievedEvent<Foo>(Foo.class, uriBuilder, response, pageable.getPageNumber(), resultPage.getTotalPages(), pageable.getPageSize()));
+
+        return resultPage.getContent();
+    }
 
     // write
 

spring-security-rest-full/src/test/java/org/baeldung/web/FooPageableLiveTest.java

@@ -0,0 +1,76 @@
+package org.baeldung.web;
+
+import static org.baeldung.Consts.APPLICATION_PORT;
+import static org.hamcrest.Matchers.is;
+
+import static org.apache.commons.lang3.RandomStringUtils.randomAlphabetic;
+import static org.apache.commons.lang3.RandomStringUtils.randomNumeric;
+
+import java.util.List;
+
+import org.baeldung.common.web.AbstractBasicLiveTest;
+import org.baeldung.persistence.model.Foo;
+import org.springframework.test.context.ActiveProfiles;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.baeldung.spring.ConfigTest;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+import org.junit.runner.RunWith;
+import org.junit.Test;
+import io.restassured.response.Response;
+
+import static org.hamcrest.Matchers.is;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertThat;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { ConfigTest.class }, loader = AnnotationConfigContextLoader.class)
+@ActiveProfiles("test")
+public class FooPageableLiveTest extends AbstractBasicLiveTest<Foo> {
+
+    public FooPageableLiveTest() {
+        super(Foo.class);
+    }
+
+    // API
+
+    @Override
+    public final void create() {
+        create(new Foo(randomAlphabetic(6)));
+    }
+
+    @Override
+    public final String createAsUri() {
+        return createAsUri(new Foo(randomAlphabetic(6)));
+    }
+    
+    @Test
+    public void whenResourcesAreRetrievedPaged_then200IsReceived() {
+        final Response response = givenAuth().get(getPageableURL() + "?page=0&size=10");
+
+        assertThat(response.getStatusCode(), is(200));
+    }
+
+    @Test
+    public void whenPageOfResourcesAreRetrievedOutOfBounds_then404IsReceived() {
+        final String url = getPageableURL() + "?page=" + randomNumeric(5) + "&size=10";
+        final Response response = givenAuth().get(url);
+
+        assertThat(response.getStatusCode(), is(404));
+    }
+
+    @Test
+    public void givenResourcesExist_whenFirstPageIsRetrieved_thenPageContainsResources() {
+        create();
+
+        final Response response = givenAuth().get(getPageableURL() + "?page=0&size=10");
+
+        assertFalse(response.body().as(List.class).isEmpty());
+    }
+
+    protected String getPageableURL() {
+        return "http://localhost:" + APPLICATION_PORT + "/spring-security-rest-full/auth/foos/pageable";
+    }
+    
+}

spring-security-rest-full/src/test/java/org/baeldung/web/LiveTestSuite.java

@@ -10,6 +10,7 @@ import org.junit.runners.Suite;
     JPASpecificationLiveTest.class
     ,FooDiscoverabilityLiveTest.class
     ,FooLiveTest.class
+    ,FooPageableLiveTest.class
     ,MyUserLiveTest.class
 }) //
 public class LiveTestSuite {