SHL-103 Create simple way to test the execution of shell commands. Add missing files from previous commit

samples/helloworld/src/test/java/org/springframework/shell/samples/hellworld/commands/HelloWorldCommandTests.java

@@ -0,0 +1,37 @@
+/*
+ * 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.shell.samples.hellworld.commands;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+import org.springframework.shell.Bootstrap;
+import org.springframework.shell.core.CommandResult;
+import org.springframework.shell.core.JLineShellComponent;
+
+public class HelloWorldCommandTests {
+
+	@Test
+	public void testSimple() {
+		Bootstrap bootstrap = new Bootstrap();
+		
+		JLineShellComponent shell = bootstrap.getJLineShellComponent();
+		
+		CommandResult cr = shell.executeCommand("hw simple --message hello");
+		assertEquals(true, cr.isSuccess());
+		assertEquals("Message = [hello] Location = [null]", cr.getResult());
+	}
+}