DATAJPA-265 - Further polishing.

Original pull request: #50.

src/test/java/org/springframework/data/jpa/repository/config/JpaAuditingRegistrarUnitTests.java

@@ -0,0 +1,48 @@
+/*
+ * Copyright 2013 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.springframework.data.jpa.repository.config;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.runners.MockitoJUnitRunner;
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
+import org.springframework.core.type.AnnotationMetadata;
+
+/**
+ * Unit tests for {@link JpaAuditingRegistrar}.
+ * 
+ * @see DATAJPA-265
+ * @author Oliver Gierke
+ */
+@RunWith(MockitoJUnitRunner.class)
+public class JpaAuditingRegistrarUnitTests {
+
+	JpaAuditingRegistrar registrar = new JpaAuditingRegistrar();
+
+	@Mock AnnotationMetadata metadata;
+	@Mock BeanDefinitionRegistry registry;
+
+	@Test(expected = IllegalArgumentException.class)
+	public void rejectsNullAnnotationMetadata() {
+		registrar.registerBeanDefinitions(null, registry);
+	}
+
+	@Test(expected = IllegalArgumentException.class)
+	public void rejectsNullBeanDefinitionRegistry() {
+		registrar.registerBeanDefinitions(metadata, null);
+	}
+}