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

SCT-8: Added NoOpTaskExplorer

Set the Junit to test scope.

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);
+	}
+}