modules/luni/src/test/api/common/org/apache/harmony/luni/tests/java/io/StringWriterTest.java

/*
 *  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.harmony.luni.tests.java.io;

import java.io.IOException;
import java.io.StringWriter;

public class StringWriterTest extends junit.framework.TestCase {

	StringWriter sw;

	/**
	 * @tests java.io.StringWriter#StringWriter()
	 */
	public void test_Constructor() {
		// Test for method java.io.StringWriter()
		assertTrue("Used in tests", true);
	}

	/**
	 * @tests java.io.StringWriter#close()
	 */
	public void test_close() {
		// Test for method void java.io.StringWriter.close()
		try {
			sw.close();
		} catch (IOException e) {
			fail("IOException closing StringWriter : " + e.getMessage());
		}
	}

	/**
	 * @tests java.io.StringWriter#flush()
	 */
	public void test_flush() {
		// Test for method void java.io.StringWriter.flush()
		sw.flush();
		sw.write('c');
		assertEquals("Failed to flush char", "c", sw.toString());
	}

	/**
	 * @tests java.io.StringWriter#getBuffer()
	 */
	public void test_getBuffer() {
		// Test for method java.lang.StringBuffer
		// java.io.StringWriter.getBuffer()

		sw.write("This is a test string");
		StringBuffer sb = sw.getBuffer();
		assertEquals("Incorrect buffer returned", 
				"This is a test string", sb.toString());
	}

	/**
	 * @tests java.io.StringWriter#toString()
	 */
	public void test_toString() {
		// Test for method java.lang.String java.io.StringWriter.toString()
		sw.write("This is a test string");
		assertEquals("Incorrect string returned", 
				"This is a test string", sw.toString());
	}

	/**
	 * @tests java.io.StringWriter#write(char[], int, int)
	 */
	public void test_write$CII() {
		// Test for method void java.io.StringWriter.write(char [], int, int)
		char[] c = new char[1000];
		"This is a test string".getChars(0, 21, c, 0);
		sw.write(c, 0, 21);
		assertEquals("Chars not written properly", 
				"This is a test string", sw.toString());
	}

    /**
     * @tests java.io.StringWriter#write(char[], int, int)
     * Regression for HARMONY-387
     */
    public void test_write$CII_2() {
        StringWriter obj = null;
        try {
            obj = new StringWriter();
            obj.write(new char[0], (int) 0, (int) -1);
            fail("IndexOutOfBoundsException expected");
        } catch (IndexOutOfBoundsException t) {
            assertEquals(
                    "IndexOutOfBoundsException rather than a subclass expected",
                    IndexOutOfBoundsException.class, t.getClass());
        }
    }

    /**
     * @tests java.io.StringWriter#write(char[], int, int)
     */
    public void test_write$CII_3() {
        StringWriter obj = null;
        try {
            obj = new StringWriter();
            obj.write(new char[0], (int) -1, (int) 0);
            fail("IndexOutOfBoundsException expected");
        } catch (ArrayIndexOutOfBoundsException t) {
            fail("IndexOutOfBoundsException expected");
        } catch (IndexOutOfBoundsException t) {
        }
    }

    /**
     * @tests java.io.StringWriter#write(char[], int, int)
     */
    public void test_write$CII_4() {
        StringWriter obj = null;
        try {
            obj = new StringWriter();
            obj.write(new char[0], (int) -1, (int) -1);
            fail("IndexOutOfBoundsException expected");
        } catch (ArrayIndexOutOfBoundsException t) {
            fail("IndexOutOfBoundsException expected");
        } catch (IndexOutOfBoundsException t) {
        }
    }

	/**
	 * @tests java.io.StringWriter#write(int)
	 */
	public void test_writeI() {
		// Test for method void java.io.StringWriter.write(int)
		sw.write('c');
		assertEquals("Char not written properly", "c", sw.toString());
	}

	/**
	 * @tests java.io.StringWriter#write(java.lang.String)
	 */
	public void test_writeLjava_lang_String() {
		// Test for method void java.io.StringWriter.write(java.lang.String)
		sw.write("This is a test string");
		assertEquals("String not written properly", 
				"This is a test string", sw.toString());
	}

	/**
	 * @tests java.io.StringWriter#write(java.lang.String, int, int)
	 */
	public void test_writeLjava_lang_StringII() {
		// Test for method void java.io.StringWriter.write(java.lang.String,
		// int, int)
		sw.write("This is a test string", 2, 2);
		assertEquals("String not written properly", "is", sw.toString());
	}
    
	/**
	 * @tests java.io.StringWriter#append(char)
	 */
	public void test_appendChar() throws IOException {
	    char testChar = ' ';
	    StringWriter stringWriter = new StringWriter(20);
	    stringWriter.append(testChar);
	    assertEquals(String.valueOf(testChar), stringWriter.toString());
	    stringWriter.close();
	}

	/**
	 * @tests java.io.PrintWriter#append(CharSequence)
	 */
	public void test_appendCharSequence() throws IOException {

	    String testString = "My Test String";
	    StringWriter stringWriter = new StringWriter(20);
	    stringWriter.append(testString);
	    assertEquals(String.valueOf(testString), stringWriter.toString());
	    stringWriter.close();
	}

	/**
	 * @tests java.io.PrintWriter#append(CharSequence, int, int)
	 */
	public void test_appendCharSequenceIntInt() throws IOException {
	    String testString = "My Test String";
	    StringWriter stringWriter = new StringWriter(20);
	    stringWriter.append(testString, 1, 3);
	    assertEquals(testString.substring(1, 3), stringWriter.toString());
	    stringWriter.close();

	}
    
	/**
     * Sets up the fixture, for example, open a network connection. This method
     * is called before a test is executed.
     */
	protected void setUp() {

		sw = new StringWriter();
	}

	/**
	 * Tears down the fixture, for example, close a network connection. This
	 * method is called after a test is executed.
	 */
	protected void tearDown() {
	}
}