/*
* 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.tests.java.io;
import java.io.BufferedReader;
import java.io.ByteArrayInputStream;
import java.io.CharArrayReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PipedReader;
import java.io.Reader;
import java.io.StringReader;
import junit.framework.TestCase;
import tests.support.Support_StringReader;
public class BufferedReaderTest extends TestCase {
BufferedReader br;
String testString = "Test_All_Tests\nTest_java_io_BufferedInputStream\nTest_java_io_BufferedOutputStream\nTest_java_io_ByteArrayInputStream\nTest_java_io_ByteArrayOutputStream\nTest_java_io_DataInputStream\nTest_java_io_File\nTest_java_io_FileDescriptor\nTest_java_io_FileInputStream\nTest_java_io_FileNotFoundException\nTest_java_io_FileOutputStream\nTest_java_io_FilterInputStream\nTest_java_io_FilterOutputStream\nTest_java_io_InputStream\nTest_java_io_IOException\nTest_java_io_OutputStream\nTest_java_io_PrintStream\nTest_java_io_RandomAccessFile\nTest_java_io_SyncFailedException\nTest_java_lang_AbstractMethodError\nTest_java_lang_ArithmeticException\nTest_java_lang_ArrayIndexOutOfBoundsException\nTest_java_lang_ArrayStoreException\nTest_java_lang_Boolean\nTest_java_lang_Byte\nTest_java_lang_Character\nTest_java_lang_Class\nTest_java_lang_ClassCastException\nTest_java_lang_ClassCircularityError\nTest_java_lang_ClassFormatError\nTest_java_lang_ClassLoader\nTest_java_lang_ClassNotFoundException\nTest_java_lang_CloneNotSupportedException\nTest_java_lang_Double\nTest_java_lang_Error\nTest_java_lang_Exception\nTest_java_lang_ExceptionInInitializerError\nTest_java_lang_Float\nTest_java_lang_IllegalAccessError\nTest_java_lang_IllegalAccessException\nTest_java_lang_IllegalArgumentException\nTest_java_lang_IllegalMonitorStateException\nTest_java_lang_IllegalThreadStateException\nTest_java_lang_IncompatibleClassChangeError\nTest_java_lang_IndexOutOfBoundsException\nTest_java_lang_InstantiationError\nTest_java_lang_InstantiationException\nTest_java_lang_Integer\nTest_java_lang_InternalError\nTest_java_lang_InterruptedException\nTest_java_lang_LinkageError\nTest_java_lang_Long\nTest_java_lang_Math\nTest_java_lang_NegativeArraySizeException\nTest_java_lang_NoClassDefFoundError\nTest_java_lang_NoSuchFieldError\nTest_java_lang_NoSuchMethodError\nTest_java_lang_NullPointerException\nTest_java_lang_Number\nTest_java_lang_NumberFormatException\nTest_java_lang_Object\nTest_java_lang_OutOfMemoryError\nTest_java_lang_RuntimeException\nTest_java_lang_SecurityManager\nTest_java_lang_Short\nTest_java_lang_StackOverflowError\nTest_java_lang_String\nTest_java_lang_StringBuffer\nTest_java_lang_StringIndexOutOfBoundsException\nTest_java_lang_System\nTest_java_lang_Thread\nTest_java_lang_ThreadDeath\nTest_java_lang_ThreadGroup\nTest_java_lang_Throwable\nTest_java_lang_UnknownError\nTest_java_lang_UnsatisfiedLinkError\nTest_java_lang_VerifyError\nTest_java_lang_VirtualMachineError\nTest_java_lang_vm_Image\nTest_java_lang_vm_MemorySegment\nTest_java_lang_vm_ROMStoreException\nTest_java_lang_vm_VM\nTest_java_lang_Void\nTest_java_net_BindException\nTest_java_net_ConnectException\nTest_java_net_DatagramPacket\nTest_java_net_DatagramSocket\nTest_java_net_DatagramSocketImpl\nTest_java_net_InetAddress\nTest_java_net_NoRouteToHostException\nTest_java_net_PlainDatagramSocketImpl\nTest_java_net_PlainSocketImpl\nTest_java_net_Socket\nTest_java_net_SocketException\nTest_java_net_SocketImpl\nTest_java_net_SocketInputStream\nTest_java_net_SocketOutputStream\nTest_java_net_UnknownHostException\nTest_java_util_ArrayEnumerator\nTest_java_util_Date\nTest_java_util_EventObject\nTest_java_util_HashEnumerator\nTest_java_util_Hashtable\nTest_java_util_Properties\nTest_java_util_ResourceBundle\nTest_java_util_tm\nTest_java_util_Vector\n";
/**
* The spec says that BufferedReader.readLine() considers only "\r", "\n"
* and "\r\n" to be line separators. We must not permit additional separator
* characters.
*/
public void test_readLine_IgnoresEbcdic85Characters() throws IOException {
assertLines("A\u0085B", "A\u0085B");
}
public void test_readLine_Separators() throws IOException {
assertLines("A\nB\nC", "A", "B", "C");
assertLines("A\rB\rC", "A", "B", "C");
assertLines("A\r\nB\r\nC", "A", "B", "C");
assertLines("A\n\rB\n\rC", "A", "", "B", "", "C");
assertLines("A\n\nB\n\nC", "A", "", "B", "", "C");
assertLines("A\r\rB\r\rC", "A", "", "B", "", "C");
assertLines("A\n\n", "A", "");
assertLines("A\n\r", "A", "");
assertLines("A\r\r", "A", "");
assertLines("A\r\n", "A");
assertLines("A\r\n\r\n", "A", "");
}
private void assertLines(String in, String... lines) throws IOException {
BufferedReader bufferedReader
= new BufferedReader(new Support_StringReader(in));
for (String line : lines) {
assertEquals(line, bufferedReader.readLine());
}
assertNull(bufferedReader.readLine());
}
/**
* @tests java.io.BufferedReader#BufferedReader(java.io.Reader)
*/
public void test_ConstructorLjava_io_Reader() {
// Test for method java.io.BufferedReader(java.io.Reader)
assertTrue("Used in tests", true);
}
/**
* @tests java.io.BufferedReader#BufferedReader(java.io.Reader, int)
*/
public void test_ConstructorLjava_io_ReaderI() {
// Test for method java.io.BufferedReader(java.io.Reader, int)
assertTrue("Used in tests", true);
}
/**
* @tests java.io.BufferedReader#close()
*/
public void test_close() {
// Test for method void java.io.BufferedReader.close()
try {
br = new BufferedReader(new Support_StringReader(testString));
br.close();
br.read();
fail("Read on closed stream");
} catch (IOException x) {
return;
}
}
/**
* @tests java.io.BufferedReader#mark(int)
*/
public void test_markI() throws IOException {
// Test for method void java.io.BufferedReader.mark(int)
char[] buf = null;
br = new BufferedReader(new Support_StringReader(testString));
br.skip(500);
br.mark(1000);
br.skip(250);
br.reset();
buf = new char[testString.length()];
br.read(buf, 0, 500);
assertTrue("Failed to set mark properly", testString.substring(500,
1000).equals(new String(buf, 0, 500)));
try {
br = new BufferedReader(new Support_StringReader(testString), 800);
br.skip(500);
br.mark(250);
br.read(buf, 0, 1000);
br.reset();
fail("Failed to invalidate mark properly");
} catch (IOException x) {
// Expected
}
char[] chars = new char[256];
for (int i = 0; i < 256; i++)
chars[i] = (char) i;
Reader in = new BufferedReader(new Support_StringReader(new String(
chars)), 12);
in.skip(6);
in.mark(14);
in.read(new char[14], 0, 14);
in.reset();
assertTrue("Wrong chars", in.read() == (char) 6
&& in.read() == (char) 7);
in = new BufferedReader(new Support_StringReader(new String(chars)), 12);
in.skip(6);
in.mark(8);
in.skip(7);
in.reset();
assertTrue("Wrong chars 2", in.read() == (char) 6
&& in.read() == (char) 7);
BufferedReader br = new BufferedReader(new StringReader("01234"), 2);
br.mark(3);
char[] carray = new char[3];
int result = br.read(carray);
assertEquals(3, result);
assertEquals("Assert 0:", '0', carray[0]);
assertEquals("Assert 1:", '1', carray[1]);
assertEquals("Assert 2:", '2', carray[2]);
assertEquals("Assert 3:", '3', br.read());
br = new BufferedReader(new StringReader("01234"), 2);
br.mark(3);
carray = new char[4];
result = br.read(carray);
assertEquals("Assert 4:", 4, result);
assertEquals("Assert 5:", '0', carray[0]);
assertEquals("Assert 6:", '1', carray[1]);
assertEquals("Assert 7:", '2', carray[2]);
assertEquals("Assert 8:", '3', carray[3]);
assertEquals("Assert 9:", '4', br.read());
assertEquals("Assert 10:", -1, br.read());
BufferedReader reader = new BufferedReader(new StringReader("01234"));
reader.mark(Integer.MAX_VALUE);
reader.read();
reader.close();
}
/**
* @tests java.io.BufferedReader#markSupported()
*/
public void test_markSupported() {
// Test for method boolean java.io.BufferedReader.markSupported()
br = new BufferedReader(new Support_StringReader(testString));
assertTrue("markSupported returned false", br.markSupported());
}
/**
* @tests java.io.BufferedReader#read()
*/
public void test_read() throws IOException {
// Test for method int java.io.BufferedReader.read()
try {
br = new BufferedReader(new Support_StringReader(testString));
int r = br.read();
assertTrue("Char read improperly", testString.charAt(0) == r);
br = new BufferedReader(new Support_StringReader(new String(
new char[] { '\u8765' })));
assertTrue("Wrong double byte character", br.read() == '\u8765');
} catch (java.io.IOException e) {
fail("Exception during read test");
}
char[] chars = new char[256];
for (int i = 0; i < 256; i++)
chars[i] = (char) i;
Reader in = new BufferedReader(new Support_StringReader(new String(
chars)), 12);
try {
assertEquals("Wrong initial char", 0, in.read()); // Fill the
// buffer
char[] buf = new char[14];
in.read(buf, 0, 14); // Read greater than the buffer
assertTrue("Wrong block read data", new String(buf)
.equals(new String(chars, 1, 14)));
assertEquals("Wrong chars", 15, in.read()); // Check next byte
} catch (IOException e) {
fail("Exception during read test 2:" + e);
}
// regression test for HARMONY-841
assertTrue(new BufferedReader(new CharArrayReader(new char[5], 1, 0), 2).read() == -1);
}
/**
* @tests java.io.BufferedReader#read(char[], int, int)
*/
public void test_read$CII() throws Exception{
char[] ca = new char[2];
BufferedReader toRet = new BufferedReader(new InputStreamReader(
new ByteArrayInputStream(new byte[0])));
/* Null buffer should throw NPE even when len == 0 */
try {
toRet.read(null, 1, 0);
fail("null buffer reading zero bytes should throw NPE");
} catch (NullPointerException e) {
//expected
}
try {
toRet.close();
} catch (IOException e) {
fail("unexpected 1: " + e);
}
try {
toRet.read(null, 1, 0);
fail("null buffer reading zero bytes on closed stream should throw IOException");
} catch (IOException e) {
//expected
}
/* Closed reader should throw IOException reading zero bytes */
try {
toRet.read(ca, 0, 0);
fail("Reading zero bytes on a closed reader should not work");
} catch (IOException e) {
// expected
}
/*
* Closed reader should throw IOException in preference to index out of
* bounds
*/
try {
// Read should throw IOException before
// ArrayIndexOutOfBoundException
toRet.read(ca, 1, 5);
fail("IOException should have been thrown");
} catch (IOException e) {
// expected
}
// Test to ensure that a drained stream returns 0 at EOF
toRet = new BufferedReader(new InputStreamReader(
new ByteArrayInputStream(new byte[2])));
try {
assertEquals("Emptying the reader should return two bytes", 2,
toRet.read(ca, 0, 2));
assertEquals("EOF on a reader should be -1", -1, toRet.read(ca, 0,
2));
assertEquals("Reading zero bytes at EOF should work", 0, toRet
.read(ca, 0, 0));
} catch (IOException ex) {
fail("Unexpected IOException : " + ex.getLocalizedMessage());
}
// Test for method int java.io.BufferedReader.read(char [], int, int)
try {
char[] buf = new char[testString.length()];
br = new BufferedReader(new Support_StringReader(testString));
br.read(buf, 50, 500);
assertTrue("Chars read improperly", new String(buf, 50, 500)
.equals(testString.substring(0, 500)));
} catch (java.io.IOException e) {
fail("Exception during read test");
}
BufferedReader bufin = new BufferedReader(new Reader() {
int size = 2, pos = 0;
char[] contents = new char[size];
public int read() throws IOException {
if (pos >= size)
throw new IOException("Read past end of data");
return contents[pos++];
}
public int read(char[] buf, int off, int len) throws IOException {
if (pos >= size)
throw new IOException("Read past end of data");
int toRead = len;
if (toRead > (size - pos))
toRead = size - pos;
System.arraycopy(contents, pos, buf, off, toRead);
pos += toRead;
return toRead;
}
public boolean ready() throws IOException {
return size - pos > 0;
}
public void close() throws IOException {
}
});
try {
bufin.read();
int result = bufin.read(new char[2], 0, 2);
assertTrue("Incorrect result: " + result, result == 1);
} catch (IOException e) {
fail("Unexpected: " + e);
}
//regression for HARMONY-831
try{
new BufferedReader(new PipedReader(), 9).read(new char[] {}, 7, 0);
fail("should throw IndexOutOfBoundsException");
}catch(IndexOutOfBoundsException e){
}
// Regression for HARMONY-54
char[] ch = {};
BufferedReader reader = new BufferedReader(new CharArrayReader(ch));
try {
// Check exception thrown when the reader is open.
reader.read(null, 1, 0);
fail("Assert 0: NullPointerException expected");
} catch (NullPointerException e) {
// Expected
}
// Now check IOException is thrown in preference to
// NullPointerexception when the reader is closed.
reader.close();
try {
reader.read(null, 1, 0);
fail("Assert 1: IOException expected");
} catch (IOException e) {
// Expected
}
try {
// And check that the IOException is thrown before
// ArrayIndexOutOfBoundException
reader.read(ch, 0, 42);
fail("Assert 2: IOException expected");
} catch (IOException e) {
// expected
}
}
/**
* @tests java.io.BufferedReader#read(char[], int, int)
*/
public void test_read_$CII_Exception() throws IOException {
br = new BufferedReader(new Support_StringReader(testString));
char[] nullCharArray = null;
char[] charArray = testString.toCharArray();
try {
br.read(nullCharArray, -1, -1);
fail();
} catch (NullPointerException expected) {
} catch (IndexOutOfBoundsException expected) {
}
try {
br.read(nullCharArray, -1, 0);
fail();
} catch (NullPointerException expected) {
} catch (IndexOutOfBoundsException expected) {
}
try {
br.read(nullCharArray, 0, -1);
fail("should throw NullPointerException");
} catch (NullPointerException e) {
// expected
}
try {
br.read(nullCharArray, 0, 0);
fail("should throw NullPointerException");
} catch (NullPointerException e) {
// expected
}
try {
br.read(nullCharArray, 0, 1);
fail("should throw NullPointerException");
} catch (NullPointerException e) {
// expected
}
try {
br.read(charArray, -1, -1);
fail("should throw IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
br.read(charArray, -1, 0);
fail("should throw IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
// expected
}
br.read(charArray, 0, 0);
br.read(charArray, 0, charArray.length);
br.read(charArray, charArray.length, 0);
try {
br.read(charArray, charArray.length + 1, 0);
fail("should throw IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
//expected
}
try {
br.read(charArray, charArray.length + 1, 1);
fail("should throw IndexOutOfBoundsException");
} catch (IndexOutOfBoundsException e) {
//expected
}
br.close();
try {
br.read(nullCharArray, -1, -1);
fail("should throw IOException");
} catch (IOException e) {
// expected
}
try {
br.read(charArray, -1, 0);
fail("should throw IOException");
} catch (IOException e) {
// expected
}
try {
br.read(charArray, 0, -1);
fail("should throw IOException");
} catch (IOException e) {
// expected
}
}
/**
* @tests java.io.BufferedReader#readLine()
*/
public void test_readLine() {
// Test for method java.lang.String java.io.BufferedReader.readLine()
try {
br = new BufferedReader(new Support_StringReader(testString));
String r = br.readLine();
assertEquals("readLine returned incorrect string", "Test_All_Tests", r
);
} catch (java.io.IOException e) {
fail("Exception during readLine test");
}
}
/**
* @tests java.io.BufferedReader#ready()
*/
public void test_ready() {
// Test for method boolean java.io.BufferedReader.ready()
try {
br = new BufferedReader(new Support_StringReader(testString));
assertTrue("ready returned false", br.ready());
} catch (java.io.IOException e) {
fail("Exception during ready test" + e.toString());
}
}
/**
* @tests java.io.BufferedReader#reset()
*/
public void test_reset() {
// Test for method void java.io.BufferedReader.reset()
try {
br = new BufferedReader(new Support_StringReader(testString));
br.skip(500);
br.mark(900);
br.skip(500);
br.reset();
char[] buf = new char[testString.length()];
br.read(buf, 0, 500);
assertTrue("Failed to reset properly", testString.substring(500,
1000).equals(new String(buf, 0, 500)));
} catch (java.io.IOException e) {
fail("Exception during reset test");
}
try {
br = new BufferedReader(new Support_StringReader(testString));
br.skip(500);
br.reset();
fail("Reset succeeded on unmarked stream");
} catch (IOException x) {
return;
}
}
public void test_reset_IOException() throws Exception {
int[] expected = new int[] { '1', '2', '3', '4', '5', '6', '7', '8',
'9', '0', -1 };
br = new BufferedReader(new Support_StringReader("1234567890"), 9);
br.mark(9);
for (int i = 0; i < 11; i++) {
assertEquals(expected[i], br.read());
}
try {
br.reset();
fail("should throw IOException");
} catch (IOException e) {
// Expected
}
for (int i = 0; i < 11; i++) {
assertEquals(-1, br.read());
}
br = new BufferedReader(new Support_StringReader("1234567890"));
br.mark(10);
for (int i = 0; i < 10; i++) {
assertEquals(expected[i], br.read());
}
br.reset();
for (int i = 0; i < 11; i++) {
assertEquals(expected[i], br.read());
}
}
/**
* @tests java.io.BufferedReader#skip(long)
*/
public void test_skipJ() {
// Test for method long java.io.BufferedReader.skip(long)
try {
br = new BufferedReader(new Support_StringReader(testString));
br.skip(500);
char[] buf = new char[testString.length()];
br.read(buf, 0, 500);
assertTrue("Failed to set skip properly", testString.substring(500,
1000).equals(new String(buf, 0, 500)));
} catch (java.io.IOException e) {
fail("Exception during skip test");
}
}
/**
* Sets up the fixture, for example, open a network connection. This method
* is called before a test is executed.
*/
protected void setUp() {
}
/**
* Tears down the fixture, for example, close a network connection. This
* method is called after a test is executed.
*/
protected void tearDown() {
try {
br.close();
} catch (Exception e) {
}
}
}