style: format code (#4212)

close #4204
This commit is contained in:
acbin
2023-06-09 18:52:05 +08:00
committed by GitHub
parent ad03086f54
commit 00282efd8b
521 changed files with 5233 additions and 7309 deletions

View File

@ -1,102 +1,99 @@
package com.thealgorithms.io;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.*;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.*;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test;
class BufferedReaderTest {
@Test
public void testPeeks() throws IOException {
String text = "Hello!\nWorld!";
int len = text.length();
byte[] bytes = text.getBytes();
@Test
public void testPeeks() throws IOException {
String text = "Hello!\nWorld!";
int len = text.length();
byte[] bytes = text.getBytes();
ByteArrayInputStream input = new ByteArrayInputStream(bytes);
BufferedReader reader = new BufferedReader(input);
ByteArrayInputStream input = new ByteArrayInputStream(bytes);
BufferedReader reader = new BufferedReader(input);
// read the first letter
assertEquals(reader.read(), 'H');
len--;
assertEquals(reader.available(), len);
// read the first letter
assertEquals(reader.read(), 'H');
len--;
assertEquals(reader.available(), len);
// position: H[e]llo!\nWorld!
// reader.read() will be == 'e'
assertEquals(reader.peek(1), 'l');
assertEquals(reader.peek(2), 'l'); // second l
assertEquals(reader.peek(3), 'o');
}
@Test
public void testMixes() throws IOException {
String text = "Hello!\nWorld!";
int len = text.length();
byte[] bytes = text.getBytes();
ByteArrayInputStream input = new ByteArrayInputStream(bytes);
BufferedReader reader = new BufferedReader(input);
// read the first letter
assertEquals(reader.read(), 'H'); // first letter
len--;
assertEquals(reader.peek(1), 'l'); // third later (second letter after 'H')
assertEquals(reader.read(), 'e'); // second letter
len--;
assertEquals(reader.available(), len);
// position: H[e]llo!\nWorld!
assertEquals(reader.peek(2), 'o'); // second l
assertEquals(reader.peek(3), '!');
assertEquals(reader.peek(4), '\n');
assertEquals(reader.read(), 'l'); // third letter
assertEquals(reader.peek(1), 'o'); // fourth letter
for (int i = 0; i < 6; i++)
reader.read();
try {
System.out.println((char) reader.peek(4));
} catch (Exception ignored) {
System.out.println("[cached intentional error]");
// intentional, for testing purpose
// position: H[e]llo!\nWorld!
// reader.read() will be == 'e'
assertEquals(reader.peek(1), 'l');
assertEquals(reader.peek(2), 'l'); // second l
assertEquals(reader.peek(3), 'o');
}
}
@Test
public void testBlockPractical() throws IOException {
String text = "!Hello\nWorld!";
byte[] bytes = text.getBytes();
int len = bytes.length;
@Test
public void testMixes() throws IOException {
String text = "Hello!\nWorld!";
int len = text.length();
byte[] bytes = text.getBytes();
ByteArrayInputStream input = new ByteArrayInputStream(bytes);
BufferedReader reader = new BufferedReader(input);
ByteArrayInputStream input = new ByteArrayInputStream(bytes);
BufferedReader reader = new BufferedReader(input);
// read the first letter
assertEquals(reader.read(), 'H'); // first letter
len--;
assertEquals(reader.peek(), 'H');
assertEquals(reader.read(), '!'); // read the first letter
len--;
assertEquals(reader.peek(1), 'l'); // third later (second letter after 'H')
assertEquals(reader.read(), 'e'); // second letter
len--;
assertEquals(reader.available(), len);
// this only reads the next 5 bytes (Hello) because
// the default buffer size = 5
assertEquals(new String(reader.readBlock()), "Hello");
len -= 5;
assertEquals(reader.available(), len);
// position: H[e]llo!\nWorld!
assertEquals(reader.peek(2), 'o'); // second l
assertEquals(reader.peek(3), '!');
assertEquals(reader.peek(4), '\n');
// maybe kind of a practical demonstration / use case
if (reader.read() == '\n') {
assertEquals(reader.read(), 'W');
assertEquals(reader.read(), 'o');
assertEquals(reader.read(), 'l'); // third letter
assertEquals(reader.peek(1), 'o'); // fourth letter
// the rest of the blocks
assertEquals(new String(reader.readBlock()), "rld!");
} else {
// should not reach
throw new IOException("Something not right");
for (int i = 0; i < 6; i++) reader.read();
try {
System.out.println((char) reader.peek(4));
} catch (Exception ignored) {
System.out.println("[cached intentional error]");
// intentional, for testing purpose
}
}
@Test
public void testBlockPractical() throws IOException {
String text = "!Hello\nWorld!";
byte[] bytes = text.getBytes();
int len = bytes.length;
ByteArrayInputStream input = new ByteArrayInputStream(bytes);
BufferedReader reader = new BufferedReader(input);
assertEquals(reader.peek(), 'H');
assertEquals(reader.read(), '!'); // read the first letter
len--;
// this only reads the next 5 bytes (Hello) because
// the default buffer size = 5
assertEquals(new String(reader.readBlock()), "Hello");
len -= 5;
assertEquals(reader.available(), len);
// maybe kind of a practical demonstration / use case
if (reader.read() == '\n') {
assertEquals(reader.read(), 'W');
assertEquals(reader.read(), 'o');
// the rest of the blocks
assertEquals(new String(reader.readBlock()), "rld!");
} else {
// should not reach
throw new IOException("Something not right");
}
}
}
}