FileWriterTestpublic class FileWriterTest extends TestCase
| Fields Summary |
|---|
| FileWriter | fw | | FileInputStream | fis | | BufferedWriter | bw | | File | f | | FileOutputStream | fos | | BufferedReader | br |
| Methods Summary |
|---|
| protected void | setUp()Sets up the fixture, for example, open a network connection. This method
is called before a test is executed.
f = File.createTempFile("writer", ".tst");
if (f.exists())
if (!f.delete()) {
fail("Unable to delete test file");
}
| | protected void | tearDown()Tears down the fixture, for example, close a network connection. This
method is called after a test is executed.
try {
bw.close();
} catch (Exception e) {
}
try {
fis.close();
} catch (Exception e) {
}
f.delete();
| | public void | test_ConstructorLjava_io_File()
// Test for method java.io.FileWriter(java.io.File)
try {
fos = new FileOutputStream(f.getPath());
fos.write("Test String".getBytes());
fos.close();
bw = new BufferedWriter(new FileWriter(f));
bw.write(" After test string", 0, 18);
bw.close();
br = new BufferedReader(new FileReader(f.getPath()));
char[] buf = new char[100];
int r = br.read(buf);
br.close();
assertEquals("Failed to write correct chars", " After test string", new String(buf, 0, r)
);
} catch (Exception e) {
fail("Exception during Constructor test " + e.toString());
}
| | public void | test_ConstructorLjava_io_FileDescriptor()
// Test for method java.io.FileWriter(java.io.FileDescriptor)
try {
fos = new FileOutputStream(f.getPath());
fos.write("Test String".getBytes());
fos.close();
fis = new FileInputStream(f.getPath());
br = new BufferedReader(new FileReader(fis.getFD()));
char[] buf = new char[100];
int r = br.read(buf);
br.close();
fis.close();
assertTrue("Failed to write correct chars: "
+ new String(buf, 0, r), new String(buf, 0, r)
.equals("Test String"));
} catch (Exception e) {
fail("Exception during Constructor test " + e.toString());
}
| | public void | test_ConstructorLjava_io_FileZ()
// Test for method java.io.FileWriter(java.io.File)
//append = true
{
FileWriter fileWriter = new FileWriter(f);
String first = "The first string for testing. ";
fileWriter.write(first);
fileWriter.close();
fileWriter = new FileWriter(f, true);
String second = "The second String for testing.";
fileWriter.write(second);
fileWriter.close();
FileReader fileReader = new FileReader(f);
char[] out = new char[first.length() + second.length() + 10];
int length = fileReader.read(out);
fileReader.close();
assertEquals(first + second, new String(out, 0, length));
}
//append = false
{
FileWriter fileWriter = new FileWriter(f);
String first = "The first string for testing. ";
fileWriter.write(first);
fileWriter.close();
fileWriter = new FileWriter(f, false);
String second = "The second String for testing.";
fileWriter.write(second);
fileWriter.close();
FileReader fileReader = new FileReader(f);
char[] out = new char[first.length() + second.length() + 10];
int length = fileReader.read(out);
fileReader.close();
assertEquals(second, new String(out, 0, length));
}
| | public void | test_ConstructorLjava_io_FileZ_IOException()
File dir = new File(System.getProperty("java.io.tmpdir"));
try {
fw = new FileWriter(dir, true);
fail("Test 1: IOException expected.");
} catch (IOException e) {
// Expected.
}
| | public void | test_ConstructorLjava_io_File_IOException()
File dir = new File(System.getProperty("java.io.tmpdir"));
try {
fw = new FileWriter(dir);
fail("Test 1: IOException expected.");
} catch (IOException e) {
// Expected.
}
| | public void | test_ConstructorLjava_lang_String()
// Test for method java.io.FileWriter(java.lang.String)
try {
fos = new FileOutputStream(f.getPath());
fos.write("Test String".getBytes());
fos.close();
bw = new BufferedWriter(new FileWriter(f.getPath()));
bw.write(" After test string", 0, 18);
bw.close();
br = new BufferedReader(new FileReader(f.getPath()));
char[] buf = new char[100];
int r = br.read(buf);
br.close();
assertEquals("Failed to write correct chars", " After test string", new String(buf, 0, r)
);
} catch (Exception e) {
fail("Exception during Constructor test " + e.toString());
}
| | public void | test_ConstructorLjava_lang_StringZ()
// Test for method java.io.FileWriter(java.lang.String, boolean)
try {
fos = new FileOutputStream(f.getPath());
fos.write("Test String".getBytes());
fos.close();
bw = new BufferedWriter(new FileWriter(f.getPath(), true));
bw.write(" After test string", 0, 18);
bw.close();
br = new BufferedReader(new FileReader(f.getPath()));
char[] buf = new char[100];
int r = br.read(buf);
br.close();
assertEquals("Failed to append to file", "Test String After test string", new String(buf, 0, r)
);
fos = new FileOutputStream(f.getPath());
fos.write("Test String".getBytes());
fos.close();
bw = new BufferedWriter(new FileWriter(f.getPath(), false));
bw.write(" After test string", 0, 18);
bw.close();
br = new BufferedReader(new FileReader(f.getPath()));
buf = new char[100];
r = br.read(buf);
br.close();
assertEquals("Failed to overwrite file", " After test string", new String(buf, 0, r)
);
} catch (Exception e) {
fail("Exception during Constructor test " + e.toString());
}
| | public void | test_ConstructorLjava_lang_StringZ_IOException()
try {
fw = new FileWriter(System.getProperty("java.io.tmpdir"), false);
fail("Test 1: IOException expected.");
} catch (IOException e) {
// Expected.
}
| | public void | test_ConstructorLjava_lang_String_IOException()
try {
fw = new FileWriter(System.getProperty("java.io.tmpdir"));
fail("Test 1: IOException expected.");
} catch (IOException e) {
// Expected.
}
| | public void | test_handleEarlyEOFChar_1()
String str = "All work and no play makes Jack a dull boy\n"; //$NON-NLS-1$
int NUMBER = 2048;
int j = 0;
int len = str.length() * NUMBER;
/* == 88064 *//* NUMBER compulsively written copies of the same string */
char[] strChars = new char[len];
for (int i = 0; i < NUMBER; ++i) {
for (int k = 0; k < str.length(); ++k) {
strChars[j++] = str.charAt(k);
}
}
File f = null;
FileWriter fw = null;
try {
f = File.createTempFile("ony", "by_one");
fw = new FileWriter(f);
fw.write(strChars);
fw.close();
InputStreamReader in = null;
FileInputStream fis = new FileInputStream(f);
in = new InputStreamReader(fis);
int b;
int errors = 0;
for (int offset = 0; offset < strChars.length; ++offset) {
b = in.read();
if (b == -1) {
fail("Early EOF at offset " + offset + "\n");
return;
}
}
assertEquals(0, errors);
} catch (IOException e) {
e.printStackTrace();
}
| | public void | test_handleEarlyEOFChar_2()
int capacity = 65536;
byte[] bytes = new byte[capacity];
byte[] bs = {
'A", 'B", 'C", 'D", 'E", 'F", 'G", 'H"
};
for (int i = 0; i < bytes.length; i++) {
bytes[i] = bs[i / 8192];
}
String inputStr = new String(bytes);
int len = inputStr.length();
File f = File.createTempFile("FileWriterBugTest ", null); //$NON-NLS-1$
FileWriter writer = new FileWriter(f);
writer.write(inputStr);
writer.close();
long flen = f.length();
FileReader reader = new FileReader(f);
char[] outChars = new char[capacity];
int outCount = reader.read(outChars);
String outStr = new String(outChars, 0, outCount);
f.deleteOnExit();
assertEquals(len, flen);
assertEquals(inputStr, outStr);
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