fixes spring-cloud/spring-cloud-task#8

SCT-8: Added NoOpTaskExplorer

Set the Junit to test scope.

spring-cloud-task-core/pom.xml

@@ -18,6 +18,11 @@
 	<description>Spring Cloud Task</description>
 
 	<dependencies>
+		<dependency>
+			<groupId>junit</groupId>
+			<artifactId>junit</artifactId>
+			<scope>test</scope>
+		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-aop</artifactId>

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/configuration/DefaultTaskConfigurer.java

@@ -16,7 +16,7 @@
 
 package org.springframework.cloud.task.configuration;
 
-import org.springframework.cloud.task.repository.LoggerTaskRepository;
+import org.springframework.cloud.task.repository.support.LoggerTaskRepository;
 import org.springframework.cloud.task.repository.TaskRepository;
 import org.springframework.context.annotation.Bean;
 import org.springframework.context.annotation.Configuration;

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/repository/support/LoggerTaskRepository.java

@@ -14,12 +14,15 @@
  * limitations under the License.
  */
 
-package org.springframework.cloud.task.repository;
+package org.springframework.cloud.task.repository.support;
 
 
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import org.springframework.cloud.task.repository.TaskExecution;
+import org.springframework.cloud.task.repository.TaskRepository;
+
 /**
  * @author Glenn Renfro
  */

spring-cloud-task-core/src/main/java/org/springframework/cloud/task/repository/support/NoOpTaskExplorer.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2015 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.cloud.task.repository.support;
+
+import java.util.ArrayList;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Set;
+
+import org.springframework.cloud.task.repository.TaskExecution;
+import org.springframework.cloud.task.repository.TaskExplorer;
+
+/**
+ * Provides a no-op TaskExplorer for development purposes.
+ *
+ * @author Michael Minella
+ */
+public class NoOpTaskExplorer implements TaskExplorer {
+
+	public TaskExecution getTaskExecution(Long executionId) {
+		return null;
+	}
+
+	public Set<TaskExecution> findRunningTaskExecutions(String taskName) {
+		return new HashSet<TaskExecution>(0);
+	}
+
+	public List<String> getTaskNames() {
+		return new ArrayList<String>(0);
+	}
+
+	public long getTaskExecutionCount(String taskName) {
+		return 0;
+	}
+
+	public List<TaskExecution> getTaskExecutionsByName(String taskName, int start, int count) {
+		return new ArrayList<TaskExecution>(0);
+	}
+}

spring-cloud-task-core/src/test/java/org/springframework/cloud/task/repository/support/NoOpTaskExplorerTest.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2015 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.cloud.task.repository.support;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+import org.junit.Before;
+import org.junit.Test;
+
+import org.springframework.cloud.task.repository.TaskExplorer;
+
+public class NoOpTaskExplorerTest {
+
+	private TaskExplorer taskExplorer;
+
+	@Before
+	public void setUp() throws Exception {
+		taskExplorer = new NoOpTaskExplorer();
+	}
+
+	@Test
+	public void testGetTaskExecution() throws Exception {
+		assertNull(taskExplorer.getTaskExecution(3l));
+	}
+
+	@Test
+	public void testFindRunningTaskExecutions() throws Exception {
+		assertEquals(taskExplorer.findRunningTaskExecutions("foo").size(), 0);
+	}
+
+	@Test
+	public void testGetTaskNames() throws Exception {
+		assertEquals(taskExplorer.getTaskNames().size(), 0);
+	}
+
+	@Test
+	public void testGetTaskExecutionCount() throws Exception {
+		assertEquals(taskExplorer.getTaskExecutionCount("foo"), 0);
+	}
+
+	@Test
+	public void testGetTaskExecutionsByName() throws Exception {
+		assertEquals(taskExplorer.getTaskExecutionsByName("foo", 0, 100).size(), 0);
+	}
+}