SHL-82 Improve detection of apple terminal

Remove AbstractShellTest as it didn't test anything other than calling for system properties
Fix failing tests

src/test/java/org/springframework/shell/BootstrapTest.java

@@ -18,7 +18,7 @@ public class BootstrapTest {
 			JLineShellComponent shell = bootstrap.getJLineShellComponent();
 			
 			//This is a brittle assertion - as additiona 'test' commands are added to the suite, this number will increase.
-			Assert.assertEquals("Number of CommandMarkers is incorrect", 5, shell.getSimpleParser().getCommandMarkers().size());
+			Assert.assertEquals("Number of CommandMarkers is incorrect", 9, shell.getSimpleParser().getCommandMarkers().size());
 			Assert.assertEquals("Number of Converters is incorrect", 16, shell.getSimpleParser().getConverters().size());			
 		} catch (RuntimeException t) {
 			throw t;

src/test/java/org/springframework/shell/core/AbstractShellTest.java

@@ -1,47 +0,0 @@
-/*
- * Copyright 2011-2012 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.core;
-
-import static org.junit.Assert.assertNotNull;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.when;
-
-import org.junit.Test;
-import org.springframework.shell.core.AbstractShell;
-
-
-/**
- * Unit test of {@link AbstractShell} (not a superclass for writing tests for
- * {@link AbstractShell} subclasses)
- *
- * @author Andrew Swan
- * @since 1.2.0
- */
-public class AbstractShellTest {
-
-	@Test
-	public void testProps() {
-		// Set up
-		final AbstractShell shell = mock(AbstractShell.class);
-		when(shell.props()).thenCallRealMethod();
-
-		// Invoke
-		final String props = shell.props();
-
-		// Check
-		assertNotNull(props);
-	}
-}