a6e6a9151f
Motivation: To conform to the CharSequence interface we need to return an empty CharSequence when start == end index and a subSequence is requested. Modifications: - Correctly handle the case where start == end - Add unit test Result: Fix https://github.com/netty/netty/issues/8796.
112 lines
3.3 KiB
Java
112 lines
3.3 KiB
Java
/*
|
|
* Copyright 2013 The Netty Project
|
|
*
|
|
* The Netty Project 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 io.netty.util.internal;
|
|
|
|
|
|
import org.junit.Test;
|
|
|
|
import static org.junit.Assert.*;
|
|
|
|
public class AppendableCharSequenceTest {
|
|
|
|
@Test
|
|
public void testSimpleAppend() {
|
|
testSimpleAppend0(new AppendableCharSequence(128));
|
|
}
|
|
|
|
@Test
|
|
public void testAppendString() {
|
|
testAppendString0(new AppendableCharSequence(128));
|
|
}
|
|
|
|
@Test
|
|
public void testAppendAppendableCharSequence() {
|
|
AppendableCharSequence seq = new AppendableCharSequence(128);
|
|
|
|
String text = "testdata";
|
|
AppendableCharSequence seq2 = new AppendableCharSequence(128);
|
|
seq2.append(text);
|
|
seq.append(seq2);
|
|
|
|
assertEquals(text, seq.toString());
|
|
assertEquals(text.substring(1, text.length() - 2), seq.substring(1, text.length() - 2));
|
|
|
|
assertEqualsChars(text, seq);
|
|
}
|
|
|
|
@Test
|
|
public void testSimpleAppendWithExpand() {
|
|
testSimpleAppend0(new AppendableCharSequence(2));
|
|
}
|
|
|
|
@Test
|
|
public void testAppendStringWithExpand() {
|
|
testAppendString0(new AppendableCharSequence(2));
|
|
}
|
|
|
|
@Test
|
|
public void testSubSequence() {
|
|
AppendableCharSequence master = new AppendableCharSequence(26);
|
|
master.append("abcdefghijlkmonpqrstuvwxyz");
|
|
assertEquals("abcdefghij", master.subSequence(0, 10).toString());
|
|
}
|
|
|
|
@Test
|
|
public void testEmptySubSequence() {
|
|
AppendableCharSequence master = new AppendableCharSequence(26);
|
|
master.append("abcdefghijlkmonpqrstuvwxyz");
|
|
AppendableCharSequence sub = master.subSequence(0, 0);
|
|
assertEquals(0, sub.length());
|
|
sub.append('b');
|
|
assertEquals('b', sub.charAt(0));
|
|
}
|
|
|
|
private static void testSimpleAppend0(AppendableCharSequence seq) {
|
|
String text = "testdata";
|
|
for (int i = 0; i < text.length(); i++) {
|
|
seq.append(text.charAt(i));
|
|
}
|
|
|
|
assertEquals(text, seq.toString());
|
|
assertEquals(text.substring(1, text.length() - 2), seq.substring(1, text.length() - 2));
|
|
|
|
assertEqualsChars(text, seq);
|
|
|
|
seq.reset();
|
|
assertEquals(0, seq.length());
|
|
}
|
|
|
|
private static void testAppendString0(AppendableCharSequence seq) {
|
|
String text = "testdata";
|
|
seq.append(text);
|
|
|
|
assertEquals(text, seq.toString());
|
|
assertEquals(text.substring(1, text.length() - 2), seq.substring(1, text.length() - 2));
|
|
|
|
assertEqualsChars(text, seq);
|
|
|
|
seq.reset();
|
|
assertEquals(0, seq.length());
|
|
}
|
|
|
|
private static void assertEqualsChars(CharSequence seq1, CharSequence seq2) {
|
|
assertEquals(seq1.length(), seq2.length());
|
|
for (int i = 0; i < seq1.length(); i++) {
|
|
assertEquals(seq1.charAt(i), seq2.charAt(i));
|
|
}
|
|
}
|
|
}
|