zutil/test/zutil/io/BufferedBoundaryInputStreamTest.java
2021-03-23 21:49:52 +01:00

360 lines
12 KiB
Java
Executable file

/*
* The MIT License (MIT)
*
* Copyright (c) 2020 Ziver Koc
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
package zutil.io;
import org.junit.Test;
import java.io.IOException;
import java.io.InputStream;
import static org.junit.Assert.*;
@SuppressWarnings("resource")
public class BufferedBoundaryInputStreamTest {
private void readAndAssertArray(byte[] expected, InputStream in, int readcount) throws IOException {
byte[] buff = new byte[readcount];
int n = in.read(buff, 0, readcount);
if (n < readcount)
n += in.read(buff, n, readcount-n);
assertEquals(readcount, n);
assertArrayEquals(expected, buff);
}
private static BufferedBoundaryInputStream getBufferedBoundaryInputStream(String data, String boundary) {
return getBufferedBoundaryInputStream(data, boundary, -1);
}
private static BufferedBoundaryInputStream getBufferedBoundaryInputStream(String data, String boundary, int buffLimit) {
StringInputStream inin = new StringInputStream(data);
BufferedBoundaryInputStream in = buffLimit >= 0 ?
new BufferedBoundaryInputStream(inin, buffLimit) :
new BufferedBoundaryInputStream(inin);
in.setBoundary(boundary);
return in;
}
@Test
public void read_normal() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream("aaa#a##aaaaaaa#", "#");
assertTrue(in.hasNext());
assertEquals('a', in.read());
assertEquals('a', in.read());
assertEquals('a', in.read());
assertEquals(-1, in.read());
assertTrue(in.hasNext());
in.next();
assertEquals('a', in.read());
assertEquals(-1, in.read());
assertTrue(in.hasNext());
in.next();
assertEquals(-1, in.read());
assertTrue(in.hasNext());
in.next();
assertEquals('a', in.read());
assertEquals('a', in.read());
assertEquals('a', in.read());
assertEquals('a', in.read());
assertEquals('a', in.read());
assertEquals('a', in.read());
assertEquals('a', in.read());
assertEquals(-1, in.read());
assertFalse(in.hasNext());
in.next();
assertEquals(-1, in.read());
assertFalse(in.hasNext());
}
@Test
public void readArr_normal() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream("aaa#aaaaaaaaaaaaaaaa#aaaaaaaaaaaaaaa#", "#");
byte[] buff = new byte[100];
int n = in.read(buff);
assertEquals(3, n);
assertTrue(in.hasNext());
in.next();
n = in.read(buff);
assertEquals(16, n);
assertTrue(in.hasNext());
in.next();
n = in.read(buff);
assertEquals(15, n);
assertFalse(in.hasNext());
in.next();
n = in.read(buff);
assertEquals(-1, n);
}
@Test
public void read_multiCharBoundary() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream("aaa1234", "1234");
byte[] buff = new byte[100];
assertEquals(3, in.read(buff));
assertEquals(-1, in.read());
assertFalse(in.hasNext());
in.next();
assertEquals(-1, in.read(buff));
assertFalse(in.hasNext());
}
@Test
public void readArr_multiCharBoundary() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"------------------------------83ff53821b7chello------------------------------83ff53821b7c--",
"------------------------------83ff53821b7c");
assertEquals(-1, in.read());
assertTrue(in.hasNext()); in.next();
assertEquals("hello", IOUtil.readContentAsString(in));
assertEquals(-1, in.read());
assertTrue(in.hasNext()); in.next();
assertEquals('-', in.read());
assertEquals('-', in.read());
assertEquals(-1, in.read());
assertFalse(in.hasNext());
in.next();
assertEquals(-1, in.read());
assertFalse(in.hasNext());
}
@Test
public void read_startWithBound() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream("#aaa", "#");
assertEquals(-1, in.read());
}
@Test
public void readArr_startWithBound() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream("#aaa", "#");
assertEquals(-1, in.read(new byte[10], 0, 10));
}
@Test
public void read_onlyBoundaries() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "a");
int n;
for(n=1; in.hasNext(); n++){
assertEquals(-1, in.read());
assertEquals(-1, in.read());
in.next();
}
assertEquals(35, n);
}
@Test
public void readArr_onlyBoundaries() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "a");
byte[] buff = new byte[100];
int n;
for(n=1; in.hasNext(); n++){
assertEquals(-1, in.read(buff));
assertEquals(-1, in.read(buff));
in.next();
}
assertEquals(35, n);
}
@Test
public void read_noBounds() throws IOException {
String data = "1234567891011121314151617181920";
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(data, "#");
int out;
StringBuilder output = new StringBuilder();
while ((out = in.read()) != -1){
output.append((char) out);
}
assertEquals(data, output.toString());
}
@Test
public void readArr_noBounds() throws IOException {
String data = "1234567891011121314151617181920";
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(data, "#");
byte[] buff = new byte[100];
assertEquals(data.length(), in.read(buff));
assertEquals(data, new String(buff, 0, data.length()));
}
@Test
public void read_largeData() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"#aaaaaaaaaaaa#aa#aaaaaaaaaaaaaaa#", "#", 10);
assertEquals(-1, in.read());
assertTrue(in.hasNext());
in.next();
for (int i=0; i<12; ++i)
assertEquals('a', in.read());
assertEquals(-1, in.read());
assertTrue(in.hasNext());
in.next();
assertEquals('a', in.read());
assertEquals('a', in.read());
assertTrue(in.hasNext());
in.next();
for (int i=0; i<15; ++i)
assertEquals('a', in.read());
assertEquals(-1, in.read());
assertFalse(in.hasNext());
}
@Test
public void read_largeDataOnlyNext() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"#aaaaaaaaaaaa#aa#aaaaaaaaaaaaaaa#", "#", 10);
in.next();
for (int i=0; i<12; ++i)
assertEquals('a', in.read());
assertEquals(-1, in.read());
in.next();
assertEquals('a', in.read());
assertEquals('a', in.read());
in.next();
for (int i=0; i<15; ++i)
assertEquals('a', in.read());
assertEquals(-1, in.read());
}
@Test
public void readArr_largeData() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"aaaaaaaaaaaa#aa#aaaaaaaaaaaaaaa#", "#", 10);
byte[] buff = new byte[100];
int n;
assertTrue(in.hasNext());
n = in.read(buff) + in.read(buff);
assertEquals(12, n);
assertEquals(-1, in.read(buff));
assertTrue(in.hasNext());
in.next();
assertEquals(2, in.read(buff));
assertTrue(in.hasNext());
in.next();
n = in.read(buff) + in.read(buff) + in.read(buff);
assertEquals(15, n);
assertEquals(-1, in.read());
assertFalse(in.hasNext());
}
@Test
public void readArr_splitBoundary() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"aaaaaaaa####aaaaaaaa", "####", 10);
byte[] buff = new byte[10];
assertEquals(4, in.read(buff, 0 , 4));
int n = 0;
n += in.read(buff, 0 , 10);
n += in.read(buff, 0 , 10);
assertEquals(4, n);
assertEquals(-1, in.read(buff, 0 , 6));
in.next();
assertEquals(6, in.read(buff, 0 , 6));
}
@Test
public void read_mark() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"0123456789#abcdefghijklmn#opqrstuvwxyz", "#");
in.read();in.read();in.read();
assertEquals('3', in.read());
in.mark(10); // mark '4'
assertEquals('4', in.read());
in.read();in.read();in.read();
assertEquals('8', in.read());
in.reset(); // go back to '4'
assertEquals('4', in.read());
}
@Test
public void readArr_mark() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"0123456789#abcdefghijklmn#opqrstuvwxyz", "#");
readAndAssertArray(new byte[]{'0','1','2','3'}, in, 4);
in.mark(10); // mark '4'
readAndAssertArray(new byte[]{'4','5','6','7'}, in, 4);
readAndAssertArray(new byte[]{'8','9'}, in, 2);
in.reset(); // go back to '4'
readAndAssertArray(new byte[]{'4','5','6','7'}, in, 4);
}
@Test
public void readArr_markBoundary() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"0123456789#abcdefghijklmn#opqrstuvwxyz", "#");
readAndAssertArray(new byte[]{'0','1','2','3'}, in, 4);
in.mark(30); // mark '4'
readAndAssertArray(new byte[]{'4','5','6','7','8','9'}, in, 6);
assertEquals(-1, in.read()); // boundary
in.next();
readAndAssertArray(new byte[]{'a','b'}, in, 2);
in.reset(); // go back to '4'
readAndAssertArray(new byte[]{'4','5','6','7','8','9'}, in, 6);
assertEquals(-1, in.read()); // is boundary still there
}
@Test
public void readArr_markLargeData() throws IOException {
BufferedBoundaryInputStream in = getBufferedBoundaryInputStream(
"0123456789#abcdefghijklmn#opqrstuvwxyz", "#", 10);
readAndAssertArray(new byte[]{'0','1','2','3'}, in, 4);
in.mark(30); // mark '4'
readAndAssertArray(new byte[]{'4','5','6','7','8','9'}, in, 6);
assertEquals(-1, in.read()); // boundary
in.next();
readAndAssertArray(new byte[]{'a','b','c','d','e','f'}, in, 6);
try{
in.reset(); // Exception we have passed buffer limit
fail();
} catch (IOException e){}
readAndAssertArray(new byte[]{'g','h'}, in, 2);
}
}