/*
* Copyright ( c ) 2018 , 2021 , Oracle and / or its affiliates . All rights reserved .
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER .
*
* This code is free software ; you can redistribute it and / or modify it
* under the terms of the GNU General Public License version 2 only , as
* published by the Free Software Foundation .
*
* This code is distributed in the hope that it will be useful , but WITHOUT
* ANY WARRANTY ; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work ; if not , write to the Free Software Foundation ,
* Inc . , 51 Franklin St , Fifth Floor , Boston , MA 02110 - 1301 USA .
*
* Please contact Oracle , 500 Oracle Parkway , Redwood Shores , CA 94065 USA
* or visit www . oracle . com if you need additional information or have any
* questions .
*/
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import java.io.IOException;
import java.io.Writer;
import static org.testng.Assert .assertNotNull;
import static org.testng.Assert .assertSame;
/*
* @ test
* @ bug 8196298
* @ run testng NullWriter
* @ summary Check for expected behavior of Writer . nullWriter ( ) .
*/
public class NullWriter {
private static Writer openWriter;
private static Writer closedWriter;
@BeforeClass
public static void setup() throws IOException {
openWriter = Writer.nullWriter();
closedWriter = Writer.nullWriter();
closedWriter.close();
}
@AfterClass
public static void closeStream() throws IOException {
openWriter.close();
}
@Test
public static void testOpen() {
assertNotNull(openWriter, "Writer.nullWriter() returned null" );
}
@Test
public static void testAppendChar() throws IOException {
assertSame(openWriter, openWriter.append('x' ));
}
@Test
public static void testAppendCharSequence() throws IOException {
CharSequence cs = "abc" ;
assertSame(openWriter, openWriter.append(cs));
}
@Test
public static void testAppendCharSequenceNull() throws IOException {
assertSame(openWriter, openWriter.append(null ));
}
@Test
public static void testAppendCharSequenceII() throws IOException {
CharSequence cs = "abc" ;
assertSame(openWriter, openWriter.append(cs, 0 , 1 ));
}
@Test
public static void testAppendCharSequenceIINull() throws IOException {
assertSame(openWriter, openWriter.append(null , 2 , 1 ));
}
@Test
public static void testFlush() throws IOException {
openWriter.flush();
}
@Test
public static void testWrite() throws IOException {
openWriter.write(62832 );
}
@Test
public static void testWriteString() throws IOException {
openWriter.write("" );
}
@Test
public static void testWriteStringII() throws IOException {
openWriter.write("" , 0 , 0 );
}
@Test
public static void testWriteBII() throws IOException, Exception {
openWriter.write(new char []{(char ) 6 }, 0 , 1 );
}
@Test(expectedExceptions = IOException.class )
public static void testAppendCharClosed() throws IOException {
closedWriter.append('x' );
}
@Test(expectedExceptions = IOException.class )
public static void testAppendCharSequenceClosed() throws IOException {
CharSequence cs = "abc" ;
closedWriter.append(cs);
}
@Test(expectedExceptions = IOException.class )
public static void testAppendCharSequenceNullClosed() throws IOException {
closedWriter.append(null );
}
@Test(expectedExceptions = IOException.class )
public static void testAppendCharSequenceIIClosed() throws IOException {
CharSequence cs = "abc" ;
closedWriter.append(cs, 0 , 1 );
}
@Test(expectedExceptions = IOException.class )
public static void testAppendCharSequenceIINullClosed() throws IOException {
closedWriter.append(null , 2 , 1 );
}
@Test(expectedExceptions = IOException.class )
public static void testFlushClosed() throws IOException {
closedWriter.flush();
}
@Test(expectedExceptions = IOException.class )
public static void testWriteClosed() throws IOException {
closedWriter.write(62832 );
}
@Test(expectedExceptions = IOException.class )
public static void testWriteStringClosed() throws IOException {
closedWriter.write("" );
}
@Test(expectedExceptions = IOException.class )
public static void testWriteStringIIClosed() throws IOException {
closedWriter.write("" , 0 , 0 );
}
@Test(expectedExceptions = IOException.class )
public static void testWriteBIIClosed() throws IOException {
closedWriter.write(new char []{(char ) 6 }, 0 , 1 );
}
}
Messung V0.5 in Prozent C=94 H=86 G=89
¤ Dauer der Verarbeitung: 0.4 Sekunden
¤
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