DATACMNS-453 - Fix NPE in isPageableRepository() for Repositories without a findAll() method.

Added additional null check to isPagingRepository() to handle repository definitions that do not have a findAll method.

Original pull request: #69.

src/test/java/org/springframework/data/repository/core/support/AbstractRepositoryMetadataUnitTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2011-2013 the original author or authors.
+ * Copyright 2011-2014 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -27,6 +27,7 @@ import org.junit.Test;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
 import org.springframework.data.querydsl.User;
+import org.springframework.data.repository.PagingAndSortingRepository;
 import org.springframework.data.repository.Repository;
 import org.springframework.data.repository.core.RepositoryMetadata;
 
@@ -35,6 +36,7 @@ import org.springframework.data.repository.core.RepositoryMetadata;
  * 
  * @author Oliver Gierke
  * @author Thomas Darimont
+ * @author Fabian Buch
  */
 public class AbstractRepositoryMetadataUnitTests {
 
@@ -64,6 +66,26 @@ public class AbstractRepositoryMetadataUnitTests {
 		assertThat(metadata.getReturnedDomainClass(method), is(typeCompatibleWith(User.class)));
 	}
 
+	/**
+	 * @see DATACMNS-453
+	 */
+	@Test
+	public void nonPageableRepository() {
+
+		RepositoryMetadata metadata = new DummyRepositoryMetadata(UserRepository.class);
+		assertThat(metadata.isPagingRepository(), is(false));
+	}
+
+	/**
+	 * @see DATACMNS-453
+	 */
+	@Test
+	public void pageableRepository() {
+
+		RepositoryMetadata metadata = new DummyRepositoryMetadata(PagedRepository.class);
+		assertThat(metadata.isPagingRepository(), is(true));
+	}
+
 	@Test
 	public void determinesReturnTypeFromGenericType() throws Exception {
 		RepositoryMetadata metadata = new DummyRepositoryMetadata(ExtendingRepository.class);
@@ -102,6 +124,10 @@ public class AbstractRepositoryMetadataUnitTests {
 		List<Map<String, Object>> anotherMethod();
 	}
 
+	interface PagedRepository extends PagingAndSortingRepository<User, Long> {
+
+	}
+
 	class GenericType<T> {
 
 	}