// create file of random size in given directory
static Path createSourceFile(Path dir) throws IOException {
String name = "source" + Integer.toString(rand.nextInt());
Path file = dir.resolve(name);
createFile(file);
byte[] bytes = new byte[rand.nextInt(128 * 1024)];
rand.nextBytes(bytes);
try (OutputStream out = newOutputStream(file)) {
out.write(bytes);
}
randomizeAttributes(file);
return file;
}
static void testCopyInputStreamToFile(int size) throws IOException {
Path tmpdir = createTempDirectory("blah");
Path source = tmpdir.resolve("source");
Path target = tmpdir.resolve("target");
try {
boolean testReplaceExisting = rand.nextBoolean();
// create source file
byte[] b = new byte[size];
rand.nextBytes(b);
write(source, b);
// target file might already exist
if (testReplaceExisting && rand.nextBoolean()) {
write(target, new byte[rand.nextInt(512)]);
}
// copy from stream to file
InputStream in = new FileInputStream(source.toFile());
try {
long n;
if (testReplaceExisting) {
n = copy(in, target, StandardCopyOption.REPLACE_EXISTING);
} else {
n = copy(in, target);
}
assertTrue(in.read() == -1); // EOF
assertTrue(n == size);
assertTrue(size(target) == size);
} finally {
in.close();
}
// check file
byte[] read = readAllBytes(target);
assertTrue(Arrays.equals(read, b));
} finally {
deleteIfExists(source);
deleteIfExists(target);
delete(tmpdir);
}
}
static void testCopyFileToOuputStream(int size) throws IOException {
Path source = createTempFile("blah", null);
try {
byte[] b = new byte[size];
rand.nextBytes(b);
write(source, b);
ByteArrayOutputStream out = new ByteArrayOutputStream();
long n = copy(source, out);
assertTrue(n == size);
assertTrue(out.size() == size);
byte[] read = out.toByteArray();
assertTrue(Arrays.equals(read, b));
// check output stream is open
out.write(0);
assertTrue(out.size() == size + 1);
} finally {
delete(source);
}
}