/*
* 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.tests.java.lang;
public class StringBuffer2Test extends junit.framework.TestCase {
StringBuffer testBuffer;
/**
* java.lang.StringBuffer#StringBuffer()
*/
public void test_Constructor() {
// Test for method java.lang.StringBuffer()
new StringBuffer();
assertTrue("Invalid buffer created", true);
}
/**
* java.lang.StringBuffer#StringBuffer(int)
*/
public void test_ConstructorI() {
// Test for method java.lang.StringBuffer(int)
StringBuffer sb = new StringBuffer(8);
assertEquals("Newly constructed buffer is of incorrect length", 0, sb
.length());
}
/**
* java.lang.StringBuffer#StringBuffer(java.lang.String)
*/
public void test_ConstructorLjava_lang_String() {
// Test for method java.lang.StringBuffer(java.lang.String)
StringBuffer sb = new StringBuffer("HelloWorld");
assertTrue("Invalid buffer created", sb.length() == 10
&& (sb.toString().equals("HelloWorld")));
boolean pass = false;
try {
new StringBuffer(null);
} catch (NullPointerException e) {
pass = true;
}
assertTrue("Should throw NullPointerException", pass);
}
/**
* java.lang.StringBuffer#append(char[])
*/
public void test_append$C() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(char [])
char buf[] = new char[4];
"char".getChars(0, 4, buf, 0);
testBuffer.append(buf);
assertEquals("Append of char[] failed",
"This is a test bufferchar", testBuffer.toString());
}
/**
* java.lang.StringBuffer#append(char[], int, int)
*/
public void test_append$CII() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(char [], int, int)
StringBuffer sb = new StringBuffer();
char[] buf1 = { 'H', 'e', 'l', 'l', 'o' };
char[] buf2 = { 'W', 'o', 'r', 'l', 'd' };
sb.append(buf1, 0, buf1.length);
assertEquals("Buffer is invalid length after append", 5, sb.length());
sb.append(buf2, 0, buf2.length);
assertEquals("Buffer is invalid length after append", 10, sb.length());
assertTrue("Buffer contains invalid chars", (sb.toString()
.equals("HelloWorld")));
}
/**
* java.lang.StringBuffer#append(char)
*/
public void test_appendC() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(char)
StringBuffer sb = new StringBuffer();
char buf1 = 'H';
char buf2 = 'W';
sb.append(buf1);
assertEquals("Buffer is invalid length after append", 1, sb.length());
sb.append(buf2);
assertEquals("Buffer is invalid length after append", 2, sb.length());
assertTrue("Buffer contains invalid chars",
(sb.toString().equals("HW")));
}
/**
* java.lang.StringBuffer#append(double)
*/
public void test_appendD() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(double)
StringBuffer sb = new StringBuffer();
sb.append(Double.MAX_VALUE);
assertEquals("Buffer is invalid length after append", 22, sb.length());
assertEquals("Buffer contains invalid characters",
"1.7976931348623157E308", sb.toString());
}
/**
* java.lang.StringBuffer#append(float)
*/
public void test_appendF() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(float)
StringBuffer sb = new StringBuffer();
final float floatNum = 900.87654F;
sb.append(floatNum);
assertTrue("Buffer is invalid length after append: " + sb.length(), sb
.length() == String.valueOf(floatNum).length());
assertTrue("Buffer contains invalid characters", sb.toString().equals(
String.valueOf(floatNum)));
}
/**
* java.lang.StringBuffer#append(int)
*/
public void test_appendI() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(int)
StringBuffer sb = new StringBuffer();
sb.append(9000);
assertEquals("Buffer is invalid length after append", 4, sb.length());
sb.append(1000);
assertEquals("Buffer is invalid length after append", 8, sb.length());
assertEquals("Buffer contains invalid characters",
"90001000", sb.toString());
}
/**
* java.lang.StringBuffer#append(long)
*/
public void test_appendJ() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(long)
StringBuffer sb = new StringBuffer();
long t = 927654321098L;
sb.append(t);
assertEquals("Buffer is of invlaid length", 12, sb.length());
assertEquals("Buffer contains invalid characters",
"927654321098", sb.toString());
}
/**
* java.lang.StringBuffer#append(java.lang.Object)
*/
public void test_appendLjava_lang_Object() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(java.lang.Object)
StringBuffer sb = new StringBuffer();
Object obj1 = new Object();
Object obj2 = new Object();
sb.append(obj1);
sb.append(obj2);
assertTrue("Buffer contains invalid characters", sb.toString().equals(
obj1.toString() + obj2.toString()));
}
/**
* java.lang.StringBuffer#append(java.lang.String)
*/
public void test_appendLjava_lang_String() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(java.lang.String)
StringBuffer sb = new StringBuffer();
String buf1 = "Hello";
String buf2 = "World";
sb.append(buf1);
assertEquals("Buffer is invalid length after append", 5, sb.length());
sb.append(buf2);
assertEquals("Buffer is invalid length after append", 10, sb.length());
assertTrue("Buffer contains invalid chars", (sb.toString()
.equals("HelloWorld")));
}
/**
* java.lang.StringBuffer#append(boolean)
*/
public void test_appendZ() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.append(boolean)
StringBuffer sb = new StringBuffer();
sb.append(false);
assertEquals("Buffer is invalid length after append", 5, sb.length());
sb.append(true);
assertEquals("Buffer is invalid length after append", 9, sb.length());
assertTrue("Buffer is invalid length after append", (sb.toString()
.equals("falsetrue")));
}
/**
* java.lang.StringBuffer#capacity()
*/
public void test_capacity() {
// Test for method int java.lang.StringBuffer.capacity()
StringBuffer sb = new StringBuffer(10);
assertEquals("Returned incorrect capacity", 10, sb.capacity());
sb.ensureCapacity(100);
assertTrue("Returned incorrect capacity", sb.capacity() >= 100);
}
/**
* java.lang.StringBuffer#charAt(int)
*/
public void test_charAtI() {
// Test for method char java.lang.StringBuffer.charAt(int)
assertEquals("Returned incorrect char", 's', testBuffer.charAt(3));
// Test for StringIndexOutOfBoundsException
boolean exception = false;
try {
testBuffer.charAt(-1);
} catch (StringIndexOutOfBoundsException e) {
exception = true;
} catch (ArrayIndexOutOfBoundsException e) {
}
assertTrue("Should throw StringIndexOutOfBoundsException", exception);
}
/**
* java.lang.StringBuffer#delete(int, int)
*/
public void test_deleteII() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.delete(int, int)
testBuffer.delete(7, 7);
assertEquals("Deleted chars when start == end", "This is a test buffer", testBuffer.toString()
);
testBuffer.delete(4, 14);
assertEquals("Deleted incorrect chars",
"This buffer", testBuffer.toString());
testBuffer = new StringBuffer("This is a test buffer");
String sharedStr = testBuffer.toString();
testBuffer.delete(0, testBuffer.length());
assertEquals("Didn't clone shared buffer", "This is a test buffer", sharedStr
);
assertTrue("Deleted incorrect chars", testBuffer.toString().equals(""));
testBuffer.append("more stuff");
assertEquals("Didn't clone shared buffer 2", "This is a test buffer", sharedStr
);
assertEquals("Wrong contents", "more stuff", testBuffer.toString());
try {
testBuffer.delete(-5, 2);
} catch (IndexOutOfBoundsException e) {
}
assertEquals("Wrong contents 2",
"more stuff", testBuffer.toString());
}
/**
* java.lang.StringBuffer#deleteCharAt(int)
*/
public void test_deleteCharAtI() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.deleteCharAt(int)
testBuffer.deleteCharAt(3);
assertEquals("Deleted incorrect char",
"Thi is a test buffer", testBuffer.toString());
}
/**
* java.lang.StringBuffer#ensureCapacity(int)
*/
public void test_ensureCapacityI() {
// Test for method void java.lang.StringBuffer.ensureCapacity(int)
StringBuffer sb = new StringBuffer(10);
sb.ensureCapacity(100);
assertTrue("Failed to increase capacity", sb.capacity() >= 100);
}
/**
* java.lang.StringBuffer#getChars(int, int, char[], int)
*/
public void test_getCharsII$CI() {
// Test for method void java.lang.StringBuffer.getChars(int, int, char
// [], int)
char[] buf = new char[10];
testBuffer.getChars(4, 8, buf, 2);
assertTrue("Returned incorrect chars", new String(buf, 2, 4)
.equals(testBuffer.toString().substring(4, 8)));
boolean exception = false;
try {
StringBuffer buf2 = new StringBuffer("");
buf2.getChars(0, 0, new char[5], 2);
} catch (IndexOutOfBoundsException e) {
exception = true;
}
assertTrue("did not expect IndexOutOfBoundsException", !exception);
}
/**
* java.lang.StringBuffer#insert(int, char[])
*/
public void test_insertI$C() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, char [])
char buf[] = new char[4];
"char".getChars(0, 4, buf, 0);
testBuffer.insert(15, buf);
assertEquals("Insert test failed",
"This is a test charbuffer", testBuffer.toString());
boolean exception = false;
StringBuffer buf1 = new StringBuffer("abcd");
try {
buf1.insert(-1, (char[]) null);
} catch (StringIndexOutOfBoundsException e) {
exception = true;
} catch (NullPointerException e) {
}
assertTrue("Should throw StringIndexOutOfBoundsException", exception);
}
/**
* java.lang.StringBuffer#insert(int, char[], int, int)
*/
public void test_insertI$CII() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, char [], int, int)
char[] c = new char[] { 'n', 'o', 't', ' ' };
testBuffer.insert(8, c, 0, 4);
assertEquals("This is not a test buffer", testBuffer.toString());
StringBuffer buf1 = new StringBuffer("abcd");
try {
buf1.insert(-1, (char[]) null, 0, 0);
fail();
} catch (NullPointerException expected) {
} catch (StringIndexOutOfBoundsException expected) {
}
try {
testBuffer.insert(testBuffer.length() - 1, c, -1, 1);
} catch (StringIndexOutOfBoundsException e) {
//expected
}
}
/**
* java.lang.StringBuffer#insert(int, char)
*/
public void test_insertIC() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, char)
testBuffer.insert(15, 'T');
assertEquals("Insert test failed",
"This is a test Tbuffer", testBuffer.toString());
}
/**
* java.lang.StringBuffer#insert(int, double)
*/
public void test_insertID() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, double)
testBuffer.insert(15, Double.MAX_VALUE);
assertTrue("Insert test failed", testBuffer.toString().equals(
"This is a test " + Double.MAX_VALUE + "buffer"));
}
/**
* java.lang.StringBuffer#insert(int, float)
*/
public void test_insertIF() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, float)
testBuffer.insert(15, Float.MAX_VALUE);
String testBufferString = testBuffer.toString();
String expectedResult = "This is a test "
+ String.valueOf(Float.MAX_VALUE) + "buffer";
assertTrue("Insert test failed, got: " + "\'" + testBufferString + "\'"
+ " but wanted: " + "\'" + expectedResult + "\'",
testBufferString.equals(expectedResult));
}
/**
* java.lang.StringBuffer#insert(int, int)
*/
public void test_insertII() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, int)
testBuffer.insert(15, 100);
assertEquals("Insert test failed",
"This is a test 100buffer", testBuffer.toString());
}
/**
* java.lang.StringBuffer#insert(int, long)
*/
public void test_insertIJ() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, long)
testBuffer.insert(15, 88888888888888888L);
assertEquals("Insert test failed",
"This is a test 88888888888888888buffer", testBuffer.toString());
}
/**
* java.lang.StringBuffer#insert(int, java.lang.Object)
*/
public void test_insertILjava_lang_Object() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, java.lang.Object)
Object obj1 = new Object();
testBuffer.insert(15, obj1);
assertTrue("Insert test failed", testBuffer.toString().equals(
"This is a test " + obj1.toString() + "buffer"));
}
/**
* java.lang.StringBuffer#insert(int, java.lang.String)
*/
public void test_insertILjava_lang_String() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, java.lang.String)
testBuffer.insert(15, "STRING ");
assertEquals("Insert test failed",
"This is a test STRING buffer", testBuffer.toString());
}
/**
* java.lang.StringBuffer#insert(int, boolean)
*/
public void test_insertIZ() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.insert(int, boolean)
testBuffer.insert(15, true);
assertEquals("Insert test failed",
"This is a test truebuffer", testBuffer.toString());
}
/**
* java.lang.StringBuffer#length()
*/
public void test_length() {
// Test for method int java.lang.StringBuffer.length()
assertEquals("Incorrect length returned", 21, testBuffer.length());
}
/**
* java.lang.StringBuffer#replace(int, int, java.lang.String)
*/
public void test_replaceIILjava_lang_String() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.replace(int, int, java.lang.String)
testBuffer.replace(5, 9, "is a replaced");
assertTrue("Replace failed, wanted: " + "\'"
+ "This is a replaced test buffer" + "\'" + " but got: " + "\'"
+ testBuffer.toString() + "\'", testBuffer.toString().equals(
"This is a replaced test buffer"));
assertEquals("insert1", "text", new StringBuffer().replace(0, 0, "text")
.toString());
assertEquals("insert2", "123text", new StringBuffer("123").replace(3, 3, "text")
.toString());
assertEquals("insert2", "1text23", new StringBuffer("123").replace(1, 1, "text")
.toString());
}
private String writeString(String in) {
StringBuffer result = new StringBuffer();
result.append("\"");
for (int i = 0; i < in.length(); i++) {
result.append(" 0x" + Integer.toHexString(in.charAt(i)));
}
result.append("\"");
return result.toString();
}
private void reverseTest(String id, String org, String rev, String back) {
// create non-shared StringBuffer
StringBuffer sb = new StringBuffer(org);
sb.reverse();
String reversed = sb.toString();
assertTrue("reversed surrogate " + id + ": " + writeString(reversed),
reversed.equals(rev));
// create non-shared StringBuffer
sb = new StringBuffer(reversed);
sb.reverse();
reversed = sb.toString();
assertTrue("reversed surrogate " + id + "a: " + writeString(reversed),
reversed.equals(back));
// test algorithm when StringBuffer is shared
sb = new StringBuffer(org);
String copy = sb.toString();
assertEquals(org, copy);
sb.reverse();
reversed = sb.toString();
assertTrue("reversed surrogate " + id + ": " + writeString(reversed),
reversed.equals(rev));
sb = new StringBuffer(reversed);
copy = sb.toString();
assertEquals(rev, copy);
sb.reverse();
reversed = sb.toString();
assertTrue("reversed surrogate " + id + "a: " + writeString(reversed),
reversed.equals(back));
}
/**
* java.lang.StringBuffer#reverse()
*/
public void test_reverse() {
// Test for method java.lang.StringBuffer
// java.lang.StringBuffer.reverse()
String org;
org = "a";
reverseTest("0", org, org, org);
org = "ab";
reverseTest("1", org, "ba", org);
org = "abcdef";
reverseTest("2", org, "fedcba", org);
org = "abcdefg";
reverseTest("3", org, "gfedcba", org);
}
/**
* java.lang.StringBuffer#setCharAt(int, char)
*/
public void test_setCharAtIC() {
// Test for method void java.lang.StringBuffer.setCharAt(int, char)
StringBuffer s = new StringBuffer("HelloWorld");
s.setCharAt(4, 'Z');
assertEquals("Returned incorrect char", 'Z', s.charAt(4));
}
/**
* java.lang.StringBuffer#setLength(int)
*/
public void test_setLengthI() {
// Test for method void java.lang.StringBuffer.setLength(int)
testBuffer.setLength(1000);
assertEquals("Failed to increase length", 1000, testBuffer.length());
assertTrue("Increase in length trashed buffer", testBuffer.toString()
.startsWith("This is a test buffer"));
testBuffer.setLength(2);
assertEquals("Failed to decrease length", 2, testBuffer.length());
assertEquals("Decrease in length failed",
"Th", testBuffer.toString());
}
/**
* java.lang.StringBuffer#substring(int)
*/
public void test_substringI() {
// Test for method java.lang.String
// java.lang.StringBuffer.substring(int)
assertEquals("Returned incorrect substring", "is a test buffer", testBuffer.substring(5)
);
}
/**
* java.lang.StringBuffer#substring(int, int)
*/
public void test_substringII() {
// Test for method java.lang.String
// java.lang.StringBuffer.substring(int, int)
assertEquals("Returned incorrect substring", "is", testBuffer.substring(5, 7)
);
}
/**
* java.lang.StringBuffer#toString()
*/
public void test_toString() {
// Test for method java.lang.String java.lang.StringBuffer.toString()
assertEquals("Incorrect string value returned", "This is a test buffer", testBuffer.toString()
);
}
@Override
protected void setUp() {
testBuffer = new StringBuffer("This is a test buffer");
}
}