/* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF 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 org.apache.harmony.luni.tests.java.lang;
import dalvik.annotation.TestTargets;
import dalvik.annotation.TestLevel;
import dalvik.annotation.TestTargetNew;
import dalvik.annotation.TestTargetClass;
import junit.framework.TestCase;
import java.io.Serializable;
import org.apache.harmony.testframework.serialization.SerializationTest;
import org.apache.harmony.testframework.serialization.SerializationTest.SerializableAssert;
@TestTargetClass(StringBuffer.class)
public class StringBufferTest extends TestCase {
/**
* @tests java.lang.StringBuffer#setLength(int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "Verifies IndexOutOfBoundsException.",
method = "setLength",
args = {int.class}
)
public void test_setLengthI() {
// Regression for HARMONY-90
StringBuffer buffer = new StringBuffer("abcde");
try {
buffer.setLength(-1);
fail("Assert 0: IndexOutOfBoundsException must be thrown");
} catch (IndexOutOfBoundsException e) {
// expected
}
}
/**
* @tests StringBuffer.StringBuffer(CharSequence);
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "StringBuffer",
args = {java.lang.CharSequence.class}
)
public void test_constructorLjava_lang_CharSequence() {
String str = "Test string";
StringBuffer sb = new StringBuffer((CharSequence) str);
assertEquals(str.length(), sb.length());
try {
new StringBuffer((CharSequence) null);
fail("Assert 0: NPE must be thrown.");
} catch (NullPointerException e) {}
assertEquals("Assert 1: must equal 'abc'.", "abc", new StringBuffer((CharSequence)"abc").toString());
}
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "trimToSize",
args = {}
)
public void test_trimToSize() {
StringBuffer buffer = new StringBuffer(25);
buffer.append("abc");
int origCapacity = buffer.capacity();
buffer.trimToSize();
int trimCapacity = buffer.capacity();
assertTrue("Assert 0: capacity must be smaller.", trimCapacity < origCapacity);
assertEquals("Assert 1: length must still be 3", 3, buffer.length());
assertEquals("Assert 2: value must still be 'abc'.", "abc", buffer.toString());
}
/**
* @tests java.lang.StringBuffer.append(CharSequence)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "append",
args = {java.lang.CharSequence.class}
)
public void test_appendLjava_lang_CharSequence() {
StringBuffer sb = new StringBuffer();
assertSame(sb, sb.append((CharSequence) "ab"));
assertEquals("ab", sb.toString());
sb.setLength(0);
assertSame(sb, sb.append((CharSequence) "cd"));
assertEquals("cd", sb.toString());
sb.setLength(0);
assertSame(sb, sb.append((CharSequence) null));
assertEquals("null", sb.toString());
}
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "append",
args = {java.lang.StringBuffer.class}
)
public void test_appendLStringBuffer() {
StringBuffer originalSB = new StringBuffer();
StringBuffer sb1 = new StringBuffer("append1");
StringBuffer sb2 = new StringBuffer("append2");
originalSB.append(sb1);
assertEquals(sb1.toString(), originalSB.toString());
originalSB.append(sb2);
assertEquals(sb1.toString() + sb2.toString(), originalSB.toString());
originalSB.append((StringBuffer) null);
assertEquals(sb1.toString() + sb2.toString() + "null",
originalSB.toString());
}
/**
* @tests java.lang.StringBuffer.append(CharSequence, int, int)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "append",
args = {java.lang.CharSequence.class, int.class, int.class}
)
@SuppressWarnings("cast")
public void test_appendLjava_lang_CharSequenceII() {
StringBuffer sb = new StringBuffer();
assertSame(sb, sb.append((CharSequence) "ab", 0, 2));
assertEquals("ab", sb.toString());
sb.setLength(0);
assertSame(sb, sb.append((CharSequence) "cd", 0, 2));
assertEquals("cd", sb.toString());
sb.setLength(0);
assertSame(sb, sb.append((CharSequence) "abcd", 0, 2));
assertEquals("ab", sb.toString());
sb.setLength(0);
assertSame(sb, sb.append((CharSequence) "abcd", 2, 4));
assertEquals("cd", sb.toString());
sb.setLength(0);
assertSame(sb, sb.append((CharSequence) null, 0, 2));
assertEquals("nu", sb.toString());
try {
sb.append((CharSequence) "abcd", -1, 2);
fail("IndexOutOfBoundsException was thrown.");
} catch(IndexOutOfBoundsException e) {
//expected
}
}
/**
* @tests java.lang.StringBuffer.append(char[], int, int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "Verifies ArrayIndexOutOfBoundsException.",
method = "append",
args = {char[].class, int.class, int.class}
)
public void test_append$CII_2() {
StringBuffer obj = new StringBuffer();
try {
obj.append(new char[0], -1, -1);
fail("ArrayIndexOutOfBoundsException expected");
} catch (ArrayIndexOutOfBoundsException e) {
// expected
}
}
/**
* @tests java.lang.StringBuffer.append(char[], int, int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "Verifies NullPointerException.",
method = "append",
args = {char[].class, int.class, int.class}
)
public void test_append$CII_3() throws Exception {
StringBuffer obj = new StringBuffer();
try {
obj.append((char[]) null, -1, -1);
fail("NullPointerException expected");
} catch (NullPointerException e) {
// expected
}
}
/**
* @tests java.lang.StringBuffer.insert(int, CharSequence)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "insert",
args = {int.class, java.lang.CharSequence.class}
)
public void test_insertILjava_lang_CharSequence() {
final String fixture = "0000";
StringBuffer sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(0, (CharSequence) "ab"));
assertEquals("ab0000", sb.toString());
assertEquals(6, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(2, (CharSequence) "ab"));
assertEquals("00ab00", sb.toString());
assertEquals(6, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(4, (CharSequence) "ab"));
assertEquals("0000ab", sb.toString());
assertEquals(6, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(4, (CharSequence) null));
assertEquals("0000null", sb.toString());
assertEquals(8, sb.length());
try {
sb = new StringBuffer(fixture);
sb.insert(-1, (CharSequence) "ab");
fail("no IOOBE, negative index");
} catch (IndexOutOfBoundsException e) {
// Expected
}
try {
sb = new StringBuffer(fixture);
sb.insert(5, (CharSequence) "ab");
fail("no IOOBE, index too large index");
} catch (IndexOutOfBoundsException e) {
// Expected
}
}
/**
* @tests java.lang.StringBuffer.insert(int, CharSequence, int, int)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "insert",
args = {int.class, java.lang.CharSequence.class, int.class, int.class}
)
@SuppressWarnings("cast")
public void test_insertILjava_lang_CharSequenceII() {
final String fixture = "0000";
StringBuffer sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(0, (CharSequence) "ab", 0, 2));
assertEquals("ab0000", sb.toString());
assertEquals(6, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(0, (CharSequence) "ab", 0, 1));
assertEquals("a0000", sb.toString());
assertEquals(5, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(2, (CharSequence) "ab", 0, 2));
assertEquals("00ab00", sb.toString());
assertEquals(6, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(2, (CharSequence) "ab", 0, 1));
assertEquals("00a00", sb.toString());
assertEquals(5, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(4, (CharSequence) "ab", 0, 2));
assertEquals("0000ab", sb.toString());
assertEquals(6, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(4, (CharSequence) "ab", 0, 1));
assertEquals("0000a", sb.toString());
assertEquals(5, sb.length());
sb = new StringBuffer(fixture);
assertSame(sb, sb.insert(4, (CharSequence) null, 0, 2));
assertEquals("0000nu", sb.toString());
assertEquals(6, sb.length());
try {
sb = new StringBuffer(fixture);
sb.insert(-1, (CharSequence) "ab", 0, 2);
fail("no IOOBE, negative index");
} catch (IndexOutOfBoundsException e) {
// Expected
}
try {
sb = new StringBuffer(fixture);
sb.insert(5, (CharSequence) "ab", 0, 2);
fail("no IOOBE, index too large index");
} catch (IndexOutOfBoundsException e) {
// Expected
}
try {
sb = new StringBuffer(fixture);
sb.insert(5, (CharSequence) "ab", -1, 2);
fail("no IOOBE, negative offset");
} catch (IndexOutOfBoundsException e) {
// Expected
}
try {
sb = new StringBuffer(fixture);
sb.insert(5, new char[] { 'a', 'b' }, 0, -1);
fail("no IOOBE, negative length");
} catch (IndexOutOfBoundsException e) {
// Expected
}
try {
sb = new StringBuffer(fixture);
sb.insert(5, new char[] { 'a', 'b' }, 0, 3);
fail("no IOOBE, too long");
} catch (IndexOutOfBoundsException e) {
// Expected
}
}
/**
* @tests java.lang.StringBuffer.insert(int, char)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "Verifies ArrayIndexOutOfBoundsException.",
method = "insert",
args = {int.class, char.class}
)
public void test_insertIC() {
StringBuffer obj = new StringBuffer();
try {
obj.insert(-1, ' ');
fail("ArrayIndexOutOfBoundsException expected");
} catch (ArrayIndexOutOfBoundsException e) {
// expected
}
}
/**
* @tests java.lang.StringBuffer.appendCodePoint(int)'
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "appendCodePoint",
args = {int.class}
)
public void test_appendCodePointI() {
StringBuffer sb = new StringBuffer();
sb.appendCodePoint(0x10000);
assertEquals("\uD800\uDC00", sb.toString());
sb.append("fixture");
assertEquals("\uD800\uDC00fixture", sb.toString());
sb.appendCodePoint(0x00010FFFF);
assertEquals("\uD800\uDC00fixture\uDBFF\uDFFF", sb.toString());
}
/**
* @tests java.lang.StringBuffer.codePointAt(int)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "codePointAt",
args = {int.class}
)
public void test_codePointAtI() {
StringBuffer sb = new StringBuffer("abc");
assertEquals('a', sb.codePointAt(0));
assertEquals('b', sb.codePointAt(1));
assertEquals('c', sb.codePointAt(2));
sb = new StringBuffer("\uD800\uDC00");
assertEquals(0x10000, sb.codePointAt(0));
assertEquals('\uDC00', sb.codePointAt(1));
try {
sb.codePointAt(-1);
fail("No IOOBE on negative index.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.codePointAt(sb.length());
fail("No IOOBE on index equal to length.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.codePointAt(sb.length() + 1);
fail("No IOOBE on index greater than length.");
} catch (IndexOutOfBoundsException e) {
}
}
/**
* @tests java.lang.StringBuffer.codePointBefore(int)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "codePointBefore",
args = {int.class}
)
public void test_codePointBeforeI() {
StringBuffer sb = new StringBuffer("abc");
assertEquals('a', sb.codePointBefore(1));
assertEquals('b', sb.codePointBefore(2));
assertEquals('c', sb.codePointBefore(3));
sb = new StringBuffer("\uD800\uDC00");
assertEquals(0x10000, sb.codePointBefore(2));
assertEquals('\uD800', sb.codePointBefore(1));
try {
sb.codePointBefore(0);
fail("No IOOBE on zero index.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.codePointBefore(-1);
fail("No IOOBE on negative index.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.codePointBefore(sb.length() + 1);
fail("No IOOBE on index greater than length.");
} catch (IndexOutOfBoundsException e) {
}
}
/**
* @tests java.lang.StringBuffer.codePointCount(int, int)
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "codePointCount",
args = {int.class, int.class}
)
public void test_codePointCountII() {
assertEquals(1, new StringBuffer("\uD800\uDC00").codePointCount(0, 2));
assertEquals(1, new StringBuffer("\uD800\uDC01").codePointCount(0, 2));
assertEquals(1, new StringBuffer("\uD801\uDC01").codePointCount(0, 2));
assertEquals(1, new StringBuffer("\uDBFF\uDFFF").codePointCount(0, 2));
assertEquals(3, new StringBuffer("a\uD800\uDC00b").codePointCount(0, 4));
assertEquals(4, new StringBuffer("a\uD800\uDC00b\uD800").codePointCount(0, 5));
StringBuffer sb = new StringBuffer("abc");
try {
sb.codePointCount(-1, 2);
fail("No IOOBE for negative begin index.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.codePointCount(0, 4);
fail("No IOOBE for end index that's too large.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.codePointCount(3, 2);
fail("No IOOBE for begin index larger than end index.");
} catch (IndexOutOfBoundsException e) {
}
}
/**
* @tests java.lang.StringBuffer.getChars(int, int, char[], int)
*/
@TestTargetNew(
level = TestLevel.PARTIAL_COMPLETE,
notes = "Verifies IndexOutOfBoundsException, NullPointerException.",
method = "getChars",
args = {int.class, int.class, char[].class, int.class}
)
public void test_getCharsII$CI() {
StringBuffer obj = new StringBuffer();
try {
obj.getChars(0, 0, new char[0], -1);
// TODO(Fixed) According to spec this should be IndexOutOfBoundsException.
// fail("ArrayIndexOutOfBoundsException expected");
// } catch (ArrayIndexOutOfBoundsException e) {
fail("IndexOutOfBoundsException expected");
} catch (IndexOutOfBoundsException e) {
// expected
}
try {
obj.getChars(0, 0, null, -1);
fail("NullPointerException is not thrown.");
} catch(NullPointerException npe) {
//expected
}
}
/**
* @tests java.lang.StringBuffer.offsetByCodePoints(int, int)'
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "offsetByCodePoints",
args = {int.class, int.class}
)
public void test_offsetByCodePointsII() {
int result = new StringBuffer("a\uD800\uDC00b").offsetByCodePoints(0, 2);
assertEquals(3, result);
result = new StringBuffer("abcd").offsetByCodePoints(3, -1);
assertEquals(2, result);
result = new StringBuffer("a\uD800\uDC00b").offsetByCodePoints(0, 3);
assertEquals(4, result);
result = new StringBuffer("a\uD800\uDC00b").offsetByCodePoints(3, -1);
assertEquals(1, result);
result = new StringBuffer("a\uD800\uDC00b").offsetByCodePoints(3, 0);
assertEquals(3, result);
result = new StringBuffer("\uD800\uDC00bc").offsetByCodePoints(3, 0);
assertEquals(3, result);
result = new StringBuffer("a\uDC00bc").offsetByCodePoints(3, -1);
assertEquals(2, result);
result = new StringBuffer("a\uD800bc").offsetByCodePoints(3, -1);
assertEquals(2, result);
StringBuffer sb = new StringBuffer("abc");
try {
sb.offsetByCodePoints(-1, 1);
fail("No IOOBE for negative index.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.offsetByCodePoints(0, 4);
fail("No IOOBE for offset that's too large.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.offsetByCodePoints(3, -4);
fail("No IOOBE for offset that's too small.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.offsetByCodePoints(3, 1);
fail("No IOOBE for index that's too large.");
} catch (IndexOutOfBoundsException e) {
}
try {
sb.offsetByCodePoints(4, -1);
fail("No IOOBE for index that's too large.");
} catch (IndexOutOfBoundsException e) {
}
}
/**
* @tests {@link java.lang.StringBuffer#indexOf(String, int)}
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "indexOf",
args = {java.lang.String.class, int.class}
)
@SuppressWarnings("nls")
public void test_IndexOfStringInt() {
final String fixture = "0123456789";
StringBuffer sb = new StringBuffer(fixture);
assertEquals(0, sb.indexOf("0"));
assertEquals(0, sb.indexOf("012"));
assertEquals(-1, sb.indexOf("02"));
assertEquals(8, sb.indexOf("89"));
assertEquals(0, sb.indexOf("0"), 0);
assertEquals(0, sb.indexOf("012"), 0);
assertEquals(-1, sb.indexOf("02"), 0);
assertEquals(8, sb.indexOf("89"), 0);
assertEquals(-1, sb.indexOf("0"), 5);
assertEquals(-1, sb.indexOf("012"), 5);
assertEquals(-1, sb.indexOf("02"), 0);
assertEquals(8, sb.indexOf("89"), 5);
try {
sb.indexOf(null, 0);
fail("Should throw a NullPointerExceptionE");
} catch (NullPointerException e) {
// Expected
}
}
/**
* @tests {@link java.lang.StringBuffer#lastIndexOf(String, int)}
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "",
method = "lastIndexOf",
args = {java.lang.String.class, int.class}
)
@SuppressWarnings("nls")
public void test_lastIndexOfLjava_lang_StringI() {
final String fixture = "0123456789";
StringBuffer sb = new StringBuffer(fixture);
assertEquals(0, sb.lastIndexOf("0"));
assertEquals(0, sb.lastIndexOf("012"));
assertEquals(-1, sb.lastIndexOf("02"));
assertEquals(8, sb.lastIndexOf("89"));
assertEquals(0, sb.lastIndexOf("0"), 0);
assertEquals(0, sb.lastIndexOf("012"), 0);
assertEquals(-1, sb.lastIndexOf("02"), 0);
assertEquals(8, sb.lastIndexOf("89"), 0);
assertEquals(-1, sb.lastIndexOf("0"), 5);
assertEquals(-1, sb.lastIndexOf("012"), 5);
assertEquals(-1, sb.lastIndexOf("02"), 0);
assertEquals(8, sb.lastIndexOf("89"), 5);
try {
sb.lastIndexOf(null, 0);
fail("Should throw a NullPointerException");
} catch (NullPointerException e) {
// Expected
}
}
// comparator for StringBuffer objects
private static final SerializableAssert STRING_BUFFER_COMPARATOR = new SerializableAssert() {
public void assertDeserialized(Serializable initial,
Serializable deserialized) {
StringBuffer init = (StringBuffer) initial;
StringBuffer desr = (StringBuffer) deserialized;
// serializable fields are: 'count', 'shared', 'value'
// serialization of 'shared' is not verified
// 'count' + 'value' should result in required string
assertEquals("toString", init.toString(), desr.toString());
}
};
/**
* @tests serialization/deserialization.
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "Verifies serialization/deserialization compatibility.",
method = "!SerializationSelf",
args = {}
)
public void testSerializationSelf() throws Exception {
SerializationTest.verifySelf(new StringBuffer("0123456789"),
STRING_BUFFER_COMPARATOR);
}
/**
* @tests serialization/deserialization compatibility with RI.
*/
@TestTargetNew(
level = TestLevel.COMPLETE,
notes = "Verifies serialization/deserialization compatibility.",
method = "!SerializationGolden",
args = {}
)
public void testSerializationCompatibility() throws Exception {
SerializationTest.verifyGolden(this, new StringBuffer("0123456789"),
STRING_BUFFER_COMPARATOR);
}
}
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