106 lines
3.6 KiB
Java
106 lines
3.6 KiB
Java
/*
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* Copyright (c) 2021, 2022, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4926314 8287003
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* @summary Test for InputStreamReader#read(CharBuffer).
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* @run testng ReadCharBuffer
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*/
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import org.testng.annotations.DataProvider;
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import org.testng.annotations.Test;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.io.InputStreamReader;
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import java.io.Reader;
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import java.nio.ByteBuffer;
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import java.nio.CharBuffer;
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import java.nio.charset.CodingErrorAction;
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import java.util.Arrays;
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import static java.nio.charset.StandardCharsets.US_ASCII;
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import static java.nio.charset.StandardCharsets.UTF_8;
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import static org.testng.Assert.assertEquals;
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public class ReadCharBuffer {
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private static final int BUFFER_SIZE = 24;
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@DataProvider(name = "buffers")
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public Object[][] createBuffers() {
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// test both on-heap and off-heap buffers as they make use different code paths
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return new Object[][]{
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new Object[]{CharBuffer.allocate(BUFFER_SIZE)},
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new Object[]{ByteBuffer.allocateDirect(BUFFER_SIZE * 2).asCharBuffer()}
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};
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}
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private void fillBuffer(CharBuffer buffer) {
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char[] filler = new char[BUFFER_SIZE];
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Arrays.fill(filler, 'x');
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buffer.put(filler);
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buffer.clear();
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}
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@Test(dataProvider = "buffers")
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public void read(CharBuffer buffer) throws IOException {
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fillBuffer(buffer);
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try (Reader reader = new InputStreamReader(new ByteArrayInputStream("ABCDEFGHIJKLMNOPQRTUVWXYZ".getBytes(US_ASCII)), US_ASCII)) {
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buffer.limit(7);
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buffer.position(1);
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assertEquals(reader.read(buffer), 6);
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assertEquals(buffer.position(), 7);
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assertEquals(buffer.limit(), 7);
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buffer.limit(16);
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buffer.position(8);
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assertEquals(reader.read(buffer), 8);
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assertEquals(buffer.position(), 16);
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assertEquals(buffer.limit(), 16);
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}
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buffer.clear();
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assertEquals(buffer.toString(), "xABCDEFxGHIJKLMNxxxxxxxx");
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}
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@Test
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public void readLeftover() throws IOException {
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byte[] b = new byte[] {'a', 'b', (byte) 0xC2};
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ByteArrayInputStream bais = new ByteArrayInputStream(b);
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InputStreamReader r = new InputStreamReader(bais,
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UTF_8.newDecoder().onMalformedInput(CodingErrorAction.IGNORE));
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int n = r.read();
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assertEquals((char)n, 'a');
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char[] c = new char[3];
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n = r.read(c, 0, 3);
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assertEquals(n, 1);
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assertEquals((char)c[0], 'b');
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n = r.read();
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assertEquals(n, -1);
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}
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}
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