src/test/java/org/apache/felix/utils/properties/PropertiesTest.java - felix-dev - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
  * this work for additional information regarding copyright ownership.
  * The ASF licenses this file to You 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.apache.felix.utils.properties;

 import java.io.ByteArrayInputStream;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.PrintWriter;
 import java.io.StringReader;
 import java.io.StringWriter;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;

 import junit.framework.TestCase;

 /**
  * <p>
  * Unit tests on <code>Properties</code>.
  * </p>
  *
  * @author jbonofre
  */
 public class PropertiesTest extends TestCase {

     private final static String TEST_PROPERTIES_FILE = "test.properties";
     private final static String LINE_SEPARATOR = System.getProperty("line.separator");
     private static final String COMMENT = "# comment";
     private static final String KEY1 = "mvn:foo/bar";
     private static final String KEY1A = "mvn\\:foo/bar";
     private static final String KEY2 = "foo:bar:version:type:classifier";
     private static final String KEY2A = "foo\\:bar\\:version\\:type\\:classifier";
     private static final String VALUE1 = "value";

     private Properties properties;

     /*
      * (non-Javadoc)
      * @see junit.framework.TestCase#setUp()
      */
     public void setUp() throws Exception {
         properties = new Properties();
         properties.load(this.getClass().getClassLoader().getResourceAsStream(TEST_PROPERTIES_FILE));
     }

     public void testSpaces() throws Exception {
         String config = "\n" +
                         "\n" +
                         "    \n" +
                         "                \n" +
                         "   \\ \\r \\n \\t \\f\n" +
                         "   \n" +
                         "                                                \n" +
                         "! dshfjklahfjkldashgjl;as\n" +
                         "     #jdfagdfjagkdjfghksdajfd\n" +
                         "     \n" +
                         "!!properties\n" +
                         "\n" +
                         "a=a\n" +
                         "b bb as,dn   \n" +
                         "c\\r\\ \\t\\nu =:: cu\n" +
                         "bu= b\\\n" +
                         "                u\n" +
                         "d=d\\r\\ne=e\n" +
                         "f   :f\\\n" +
                         "f\\\n" +
                         "                        f\n" +
                         "g               g\n" +
                         "h\\u0020h\n" +
                         "\\   i=i\n" +
                         "j=\\   j\n" +
                         "space=\\   c\n" +
                         "\n" +
                         "dblbackslash=\\\\\n" +
                         "                        \n";

         java.util.Properties props1 = new java.util.Properties();
         props1.load(new StringReader(config));

         org.apache.felix.utils.properties.Properties props2 = new org.apache.felix.utils.properties.Properties();
         props2.load(new StringReader(config));

         assertEquals("1", "\n \t \f", props1.getProperty(" \r"));
         assertEquals("2", "a", props1.getProperty("a"));
         assertEquals("3", "bb as,dn   ", props1.getProperty("b"));
         assertEquals("4", ":: cu", props1.getProperty("c\r \t\nu"));
         assertEquals("5", "bu", props1.getProperty("bu"));
         assertEquals("6", "d\r\ne=e", props1.getProperty("d"));
         assertEquals("7", "fff", props1.getProperty("f"));
         assertEquals("8", "g", props1.getProperty("g"));
         assertEquals("9", "", props1.getProperty("h h"));
         assertEquals("10", "i=i", props1.getProperty(" "));
         assertEquals("11", "   j", props1.getProperty("j"));
         assertEquals("12", "   c", props1.getProperty("space"));
         assertEquals("13", "\\", props1.getProperty("dblbackslash"));

         assertEquals("1", "\n \t \f", props2.getProperty(" \r"));
         assertEquals("2", "a", props2.getProperty("a"));
         assertEquals("3", "bb as,dn   ", props2.getProperty("b"));
         assertEquals("4", ":: cu", props2.getProperty("c\r \t\nu"));
         assertEquals("5", "bu", props2.getProperty("bu"));
         assertEquals("6", "d\r\ne=e", props2.getProperty("d"));
         assertEquals("7", "fff", props2.getProperty("f"));
         assertEquals("8", "g", props2.getProperty("g"));
         assertEquals("9", "", props2.getProperty("h h"));
         assertEquals("10", "i=i", props2.getProperty(" "));
         assertEquals("11", "   j", props2.getProperty("j"));
         assertEquals("12", "   c", props2.getProperty("space"));
         assertEquals("13", "\\", props2.getProperty("dblbackslash"));
         assertEquals(props1, props2);
     }

     public void testConfigInterpolation() throws IOException
     {
         String config = "a=$\\\\\\\\{var}\n" +
                 "ab=${a}b\n" +
                 "abc=${ab}c";

         java.util.Properties props1 = new java.util.Properties();
         props1.load(new StringReader(config));
         InterpolationHelper.performSubstitution((Map) props1);

         org.apache.felix.utils.properties.Properties props2 = new org.apache.felix.utils.properties.Properties();
         props2.load(new StringReader(config));

         assertEquals(props1, props2);
     }

     /**
      * <p>
      * Test getting property.
      * </p>
      *
      * @throws Exception
      */
     public void testGettingProperty() throws Exception {
         assertEquals("test", properties.get("test"));
     }

     public void testLoadSave() throws IOException {
         StringWriter sw = new StringWriter();
         PrintWriter pw = new PrintWriter(sw);
         pw.println("# ");
         pw.println("# The Main  ");
         pw.println("# ");
         pw.println("# Comment ");
         pw.println("# ");
         pw.println("");
         pw.println("# Another comment");
         pw.println("");
         pw.println("# A value comment");
         pw.println("key1 = val1");
         pw.println("");
         pw.println("# Another value comment");
         pw.println("key2 = ${key1}/foo");
         pw.println("");
         pw.println("# A third comment");
         pw.println("key3 = val3");
         pw.println("");


         Properties props = new Properties();
         props.load(new StringReader(sw.toString()));
         props.save(System.err);
         System.err.println("=====");

         props.put("key2", props.get("key2"));
         props.put("key3", "foo");
         props.save(System.err);
         System.err.println("=====");
     }

     public void testJavaUtilPropertiesCompatibility() throws Exception {
         Properties properties = new Properties();
         properties.load(this.getClass().getClassLoader().getResourceAsStream(TEST_PROPERTIES_FILE));

         String test = properties.getProperty("test");
         assertEquals(test, "test");

         String defaultValue = properties.getProperty("notfound", "default");
         assertEquals(defaultValue, "default");

         properties.setProperty("another", "another");
         assertEquals(properties.getProperty("another"), "another");

         properties.store(System.err, null);
         System.err.println("====");
     }

     private static final String RESULT1 = COMMENT + LINE_SEPARATOR + KEY1A + " = " + VALUE1 + LINE_SEPARATOR;

     public void testSaveComment1() throws Exception {
         properties.put(KEY1, COMMENT, VALUE1);
         StringWriter sw = new StringWriter();
         properties.save(sw);
         assertTrue(sw.toString(), sw.toString().endsWith(RESULT1));
     }

     private static final String RESULT1A = COMMENT + LINE_SEPARATOR + KEY2A + " = " + VALUE1 + LINE_SEPARATOR;

     public void testSaveComment1a() throws Exception {
         properties.put(KEY2, COMMENT, VALUE1);
         StringWriter sw = new StringWriter();
         properties.save(sw);
         assertTrue(sw.toString(), sw.toString().endsWith(RESULT1A));
     }

     private static final String RESULT2 = COMMENT + LINE_SEPARATOR + COMMENT + LINE_SEPARATOR + KEY1A + " = " + VALUE1 + LINE_SEPARATOR;

     public void testSaveComment2() throws Exception {
         properties.put(KEY1, Arrays.asList(new String[] {COMMENT, COMMENT}), VALUE1);
         StringWriter sw = new StringWriter();
         properties.save(sw);
         assertTrue(sw.toString(), sw.toString().endsWith(RESULT2));
     }

     private static final String RESULT3 = COMMENT + LINE_SEPARATOR + COMMENT + LINE_SEPARATOR + KEY1A + " = " + VALUE1 + "\\" + LINE_SEPARATOR+ VALUE1 + LINE_SEPARATOR;

     public void testSaveComment3() throws Exception {
         properties.put(KEY1, Arrays.asList(new String[] {COMMENT, COMMENT}), Arrays.asList(new String[] {VALUE1, VALUE1}));
         StringWriter sw = new StringWriter();
         properties.save(sw);
         assertTrue(sw.toString(), sw.toString().endsWith(RESULT3));
         List<String> rawValue = properties.getRaw(KEY1);
         assertEquals(2, rawValue.size());
         assertEquals(KEY1A + " = " + VALUE1, rawValue.get(0));
         assertEquals(VALUE1, rawValue.get(1));
     }

     public void testEntrySetValue() throws Exception {
         properties.put(KEY1, VALUE1);

         ByteArrayOutputStream baos = new ByteArrayOutputStream();
         properties.save(baos);

         properties = new Properties();
         properties.load(new ByteArrayInputStream(baos.toByteArray()));
         assertEquals(VALUE1, properties.get(KEY1));
         for (Map.Entry<String, String> entry : properties.entrySet()) {
             entry.setValue(entry.getValue() + "x");
         }
         assertEquals(VALUE1 + "x", properties.get(KEY1));

         baos = new ByteArrayOutputStream();
         properties.save(baos);

         properties = new Properties();
         properties.load(new ByteArrayInputStream(baos.toByteArray()));
         assertEquals(VALUE1 + "x", properties.get(KEY1));
     }

     public void testMultiValueEscaping() throws IOException {
         StringWriter sw = new StringWriter();
         PrintWriter pw = new PrintWriter(sw);
         pw.println("fruits                           apple, banana, pear, \\");
         pw.println("                                 cantaloupe, watermelon, \\");
         pw.println("                                 kiwi, mango");

         java.util.Properties p = new java.util.Properties();
         p.load(new StringReader(sw.toString()));
         assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", p.getProperty("fruits"));

         Properties props = new Properties();
         props.load(new StringReader(sw.toString()));
         assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", props.getProperty("fruits"));
         List<String> raw = props.getRaw("fruits");
         assertNotNull(raw);
         assertEquals(3, raw.size());
         assertEquals("fruits                           apple, banana, pear, ", raw.get(0));

         props = new Properties();
         props.put("fruits", props.getComments("fruits"), Arrays.asList(
                 "fruits                           apple, banana, pear, ",
                 "                                 cantaloupe, watermelon, ",
                 "                                 kiwi, mango"));
         assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", props.getProperty("fruits"));
         raw = props.getRaw("fruits");
         assertNotNull(raw);
         assertEquals(3, raw.size());
         assertEquals("fruits                           apple, banana, pear, ", raw.get(0));

         sw = new StringWriter();
         props.save(sw);
         props = new Properties();
         props.load(new StringReader(sw.toString()));
         assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", props.getProperty("fruits"));
         raw = props.getRaw("fruits");
         assertNotNull(raw);
         assertEquals(3, raw.size());
         assertEquals("fruits                           apple, banana, pear, ", raw.get(0));

         props = new Properties();
         props.put("fruits", props.getComments("fruits"), Arrays.asList(
                 "                           apple, banana, pear, ",
                 "                                 cantaloupe, watermelon, ",
                 "                                 kiwi, mango"));
         assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", props.getProperty("fruits"));
         raw = props.getRaw("fruits");
         assertNotNull(raw);
         assertEquals(3, raw.size());
         assertEquals("fruits =                            apple, banana, pear, ", raw.get(0));
     }

     public void testUpdate() throws Exception {
         Properties p1 = new Properties();
         p1.put("fruits", Arrays.asList("#", "# List of fruits", "#"), Arrays.asList(
                 "                           apple, banana, pear, ",
                 "                                 cantaloupe, watermelon, ",
                 "                                 kiwi, mango"));
         p1.put("trees", Arrays.asList("#", "# List of trees", "#"), Arrays.asList(
                 "                           fir, oak, maple"));
         p1.put("vegetables", Arrays.asList("#", "# List of vegetables", "#"), Arrays.asList(
                 "                           potatoes"
         ));

         Properties p2 = new Properties();
         p2.put("fruits", Arrays.asList("#", "# List of good fruits", "#"), Arrays.asList(
                 "                           apple, banana, pear"));
         p2.put("trees", "fir, oak, maple");
         p1.update(p2);

         assertEquals(2, p1.size());
         assertEquals(Arrays.asList("#", "# List of trees", "#"), p1.getComments("trees"));
         assertEquals("fir, oak, maple", p1.getProperty("trees"));
         assertEquals(Arrays.asList("#", "# List of good fruits", "#"), p1.getComments("fruits"));
         assertEquals("apple, banana, pear", p1.getProperty("fruits"));
     }
 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one or more
	* contributor license agreements. See the NOTICE file distributed with
	* this work for additional information regarding copyright ownership.
	* The ASF licenses this file to You 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.apache.felix.utils.properties;

	import java.io.ByteArrayInputStream;
	import java.io.ByteArrayOutputStream;
	import java.io.IOException;
	import java.io.PrintWriter;
	import java.io.StringReader;
	import java.io.StringWriter;
	import java.util.ArrayList;
	import java.util.Arrays;
	import java.util.List;
	import java.util.Map;

	import junit.framework.TestCase;

	/**
	* <p>
	* Unit tests on <code>Properties</code>.
	* </p>
	*
	* @author jbonofre
	*/
	public class PropertiesTest extends TestCase {

	private final static String TEST_PROPERTIES_FILE = "test.properties";
	private final static String LINE_SEPARATOR = System.getProperty("line.separator");
	private static final String COMMENT = "# comment";
	private static final String KEY1 = "mvn:foo/bar";
	private static final String KEY1A = "mvn\\:foo/bar";
	private static final String KEY2 = "foo:bar:version:type:classifier";
	private static final String KEY2A = "foo\\:bar\\:version\\:type\\:classifier";
	private static final String VALUE1 = "value";

	private Properties properties;

	/*
	* (non-Javadoc)
	* @see junit.framework.TestCase#setUp()
	*/
	public void setUp() throws Exception {
	properties = new Properties();
	properties.load(this.getClass().getClassLoader().getResourceAsStream(TEST_PROPERTIES_FILE));
	}

	public void testSpaces() throws Exception {
	String config = "\n" +
	"\n" +
	" \n" +
	" \n" +
	" \\ \\r \\n \\t \\f\n" +
	" \n" +
	" \n" +
	"! dshfjklahfjkldashgjl;as\n" +
	" #jdfagdfjagkdjfghksdajfd\n" +
	" \n" +
	"!!properties\n" +
	"\n" +
	"a=a\n" +
	"b bb as,dn \n" +
	"c\\r\\ \\t\\nu =:: cu\n" +
	"bu= b\\\n" +
	" u\n" +
	"d=d\\r\\ne=e\n" +
	"f :f\\\n" +
	"f\\\n" +
	" f\n" +
	"g g\n" +
	"h\\u0020h\n" +
	"\\ i=i\n" +
	"j=\\ j\n" +
	"space=\\ c\n" +
	"\n" +
	"dblbackslash=\\\\\n" +
	" \n";

	java.util.Properties props1 = new java.util.Properties();
	props1.load(new StringReader(config));

	org.apache.felix.utils.properties.Properties props2 = new org.apache.felix.utils.properties.Properties();
	props2.load(new StringReader(config));

	assertEquals("1", "\n \t \f", props1.getProperty(" \r"));
	assertEquals("2", "a", props1.getProperty("a"));
	assertEquals("3", "bb as,dn ", props1.getProperty("b"));
	assertEquals("4", ":: cu", props1.getProperty("c\r \t\nu"));
	assertEquals("5", "bu", props1.getProperty("bu"));
	assertEquals("6", "d\r\ne=e", props1.getProperty("d"));
	assertEquals("7", "fff", props1.getProperty("f"));
	assertEquals("8", "g", props1.getProperty("g"));
	assertEquals("9", "", props1.getProperty("h h"));
	assertEquals("10", "i=i", props1.getProperty(" "));
	assertEquals("11", " j", props1.getProperty("j"));
	assertEquals("12", " c", props1.getProperty("space"));
	assertEquals("13", "\\", props1.getProperty("dblbackslash"));

	assertEquals("1", "\n \t \f", props2.getProperty(" \r"));
	assertEquals("2", "a", props2.getProperty("a"));
	assertEquals("3", "bb as,dn ", props2.getProperty("b"));
	assertEquals("4", ":: cu", props2.getProperty("c\r \t\nu"));
	assertEquals("5", "bu", props2.getProperty("bu"));
	assertEquals("6", "d\r\ne=e", props2.getProperty("d"));
	assertEquals("7", "fff", props2.getProperty("f"));
	assertEquals("8", "g", props2.getProperty("g"));
	assertEquals("9", "", props2.getProperty("h h"));
	assertEquals("10", "i=i", props2.getProperty(" "));
	assertEquals("11", " j", props2.getProperty("j"));
	assertEquals("12", " c", props2.getProperty("space"));
	assertEquals("13", "\\", props2.getProperty("dblbackslash"));
	assertEquals(props1, props2);
	}

	public void testConfigInterpolation() throws IOException
	{
	String config = "a=$\\\\\\\\{var}\n" +
	"ab=${a}b\n" +
	"abc=${ab}c";

	java.util.Properties props1 = new java.util.Properties();
	props1.load(new StringReader(config));
	InterpolationHelper.performSubstitution((Map) props1);

	org.apache.felix.utils.properties.Properties props2 = new org.apache.felix.utils.properties.Properties();
	props2.load(new StringReader(config));

	assertEquals(props1, props2);
	}

	/**
	* <p>
	* Test getting property.
	* </p>
	*
	* @throws Exception
	*/
	public void testGettingProperty() throws Exception {
	assertEquals("test", properties.get("test"));
	}

	public void testLoadSave() throws IOException {
	StringWriter sw = new StringWriter();
	PrintWriter pw = new PrintWriter(sw);
	pw.println("# ");
	pw.println("# The Main ");
	pw.println("# ");
	pw.println("# Comment ");
	pw.println("# ");
	pw.println("");
	pw.println("# Another comment");
	pw.println("");
	pw.println("# A value comment");
	pw.println("key1 = val1");
	pw.println("");
	pw.println("# Another value comment");
	pw.println("key2 = ${key1}/foo");
	pw.println("");
	pw.println("# A third comment");
	pw.println("key3 = val3");
	pw.println("");


	Properties props = new Properties();
	props.load(new StringReader(sw.toString()));
	props.save(System.err);
	System.err.println("=====");

	props.put("key2", props.get("key2"));
	props.put("key3", "foo");
	props.save(System.err);
	System.err.println("=====");
	}

	public void testJavaUtilPropertiesCompatibility() throws Exception {
	Properties properties = new Properties();
	properties.load(this.getClass().getClassLoader().getResourceAsStream(TEST_PROPERTIES_FILE));

	String test = properties.getProperty("test");
	assertEquals(test, "test");

	String defaultValue = properties.getProperty("notfound", "default");
	assertEquals(defaultValue, "default");

	properties.setProperty("another", "another");
	assertEquals(properties.getProperty("another"), "another");

	properties.store(System.err, null);
	System.err.println("====");
	}

	private static final String RESULT1 = COMMENT + LINE_SEPARATOR + KEY1A + " = " + VALUE1 + LINE_SEPARATOR;

	public void testSaveComment1() throws Exception {
	properties.put(KEY1, COMMENT, VALUE1);
	StringWriter sw = new StringWriter();
	properties.save(sw);
	assertTrue(sw.toString(), sw.toString().endsWith(RESULT1));
	}

	private static final String RESULT1A = COMMENT + LINE_SEPARATOR + KEY2A + " = " + VALUE1 + LINE_SEPARATOR;

	public void testSaveComment1a() throws Exception {
	properties.put(KEY2, COMMENT, VALUE1);
	StringWriter sw = new StringWriter();
	properties.save(sw);
	assertTrue(sw.toString(), sw.toString().endsWith(RESULT1A));
	}

	private static final String RESULT2 = COMMENT + LINE_SEPARATOR + COMMENT + LINE_SEPARATOR + KEY1A + " = " + VALUE1 + LINE_SEPARATOR;

	public void testSaveComment2() throws Exception {
	properties.put(KEY1, Arrays.asList(new String[] {COMMENT, COMMENT}), VALUE1);
	StringWriter sw = new StringWriter();
	properties.save(sw);
	assertTrue(sw.toString(), sw.toString().endsWith(RESULT2));
	}

	private static final String RESULT3 = COMMENT + LINE_SEPARATOR + COMMENT + LINE_SEPARATOR + KEY1A + " = " + VALUE1 + "\\" + LINE_SEPARATOR+ VALUE1 + LINE_SEPARATOR;

	public void testSaveComment3() throws Exception {
	properties.put(KEY1, Arrays.asList(new String[] {COMMENT, COMMENT}), Arrays.asList(new String[] {VALUE1, VALUE1}));
	StringWriter sw = new StringWriter();
	properties.save(sw);
	assertTrue(sw.toString(), sw.toString().endsWith(RESULT3));
	List<String> rawValue = properties.getRaw(KEY1);
	assertEquals(2, rawValue.size());
	assertEquals(KEY1A + " = " + VALUE1, rawValue.get(0));
	assertEquals(VALUE1, rawValue.get(1));
	}

	public void testEntrySetValue() throws Exception {
	properties.put(KEY1, VALUE1);

	ByteArrayOutputStream baos = new ByteArrayOutputStream();
	properties.save(baos);

	properties = new Properties();
	properties.load(new ByteArrayInputStream(baos.toByteArray()));
	assertEquals(VALUE1, properties.get(KEY1));
	for (Map.Entry<String, String> entry : properties.entrySet()) {
	entry.setValue(entry.getValue() + "x");
	}
	assertEquals(VALUE1 + "x", properties.get(KEY1));

	baos = new ByteArrayOutputStream();
	properties.save(baos);

	properties = new Properties();
	properties.load(new ByteArrayInputStream(baos.toByteArray()));
	assertEquals(VALUE1 + "x", properties.get(KEY1));
	}

	public void testMultiValueEscaping() throws IOException {
	StringWriter sw = new StringWriter();
	PrintWriter pw = new PrintWriter(sw);
	pw.println("fruits apple, banana, pear, \\");
	pw.println(" cantaloupe, watermelon, \\");
	pw.println(" kiwi, mango");

	java.util.Properties p = new java.util.Properties();
	p.load(new StringReader(sw.toString()));
	assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", p.getProperty("fruits"));

	Properties props = new Properties();
	props.load(new StringReader(sw.toString()));
	assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", props.getProperty("fruits"));
	List<String> raw = props.getRaw("fruits");
	assertNotNull(raw);
	assertEquals(3, raw.size());
	assertEquals("fruits apple, banana, pear, ", raw.get(0));

	props = new Properties();
	props.put("fruits", props.getComments("fruits"), Arrays.asList(
	"fruits apple, banana, pear, ",
	" cantaloupe, watermelon, ",
	" kiwi, mango"));
	assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", props.getProperty("fruits"));
	raw = props.getRaw("fruits");
	assertNotNull(raw);
	assertEquals(3, raw.size());
	assertEquals("fruits apple, banana, pear, ", raw.get(0));

	sw = new StringWriter();
	props.save(sw);
	props = new Properties();
	props.load(new StringReader(sw.toString()));
	assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", props.getProperty("fruits"));
	raw = props.getRaw("fruits");
	assertNotNull(raw);
	assertEquals(3, raw.size());
	assertEquals("fruits apple, banana, pear, ", raw.get(0));

	props = new Properties();
	props.put("fruits", props.getComments("fruits"), Arrays.asList(
	" apple, banana, pear, ",
	" cantaloupe, watermelon, ",
	" kiwi, mango"));
	assertEquals("apple, banana, pear, cantaloupe, watermelon, kiwi, mango", props.getProperty("fruits"));
	raw = props.getRaw("fruits");
	assertNotNull(raw);
	assertEquals(3, raw.size());
	assertEquals("fruits = apple, banana, pear, ", raw.get(0));
	}

	public void testUpdate() throws Exception {
	Properties p1 = new Properties();
	p1.put("fruits", Arrays.asList("#", "# List of fruits", "#"), Arrays.asList(
	" apple, banana, pear, ",
	" cantaloupe, watermelon, ",
	" kiwi, mango"));
	p1.put("trees", Arrays.asList("#", "# List of trees", "#"), Arrays.asList(
	" fir, oak, maple"));
	p1.put("vegetables", Arrays.asList("#", "# List of vegetables", "#"), Arrays.asList(
	" potatoes"
	));

	Properties p2 = new Properties();
	p2.put("fruits", Arrays.asList("#", "# List of good fruits", "#"), Arrays.asList(
	" apple, banana, pear"));
	p2.put("trees", "fir, oak, maple");
	p1.update(p2);

	assertEquals(2, p1.size());
	assertEquals(Arrays.asList("#", "# List of trees", "#"), p1.getComments("trees"));
	assertEquals("fir, oak, maple", p1.getProperty("trees"));
	assertEquals(Arrays.asList("#", "# List of good fruits", "#"), p1.getComments("fruits"));
	assertEquals("apple, banana, pear", p1.getProperty("fruits"));
	}
	}