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Better code coverage from Nathan Beyer [nbeyer@kc.rr.com]. 

git-svn-id: https://svn.apache.org/repos/asf/jakarta/commons/proper/lang/trunk@226597 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Gary D. Gregory 2005-07-31 01:17:01 +00:00
parent be164675fe
commit 3535bf265b
2 changed files with 159 additions and 7 deletions
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17
src/java/org/apache/commons/lang/text/StrBuilder.java
View File

@ -18,6 +18,8 @@
import java.util.Collection;
import java.util.Iterator;
import org.apache.commons.lang.ArrayUtils;
/**
* Builds a string from consituant parts providing a more flexible and powerful API
* than StringBuffer.
@ -271,6 +273,9 @@ public void setCharAt(int index, char ch) {
* @return a new array that represents the contents of the builder
*/
public char[] toCharArray() {
if (size == 0) {
return ArrayUtils.EMPTY_CHAR_ARRAY;
}
char chars[] = new char[size];
System.arraycopy(buf, 0, chars, 0, size);
return chars;
@ -283,11 +288,19 @@ public char[] toCharArray() {
* @param endIndex the end index, exclusive, must be valid except
* that if too large it is treated as end of string
* @return a new array that holds part of the contents of the builder
*
* @throws StringIndexOutOfBoundsException when <code>startIndex</code> is less than 0;
* when <code>startIndex</code> is greater than <code>endIndex</code> (if <code>endIndex</code>
* is larger than {@link #size() }, then it is massaged to equal {@link #size()} before the validation).
*/
public char[] toCharArray(int startIndex, int endIndex) {
endIndex = validateRange(startIndex, endIndex);
char chars[] = new char[size];
System.arraycopy(buf, startIndex, chars, 0, endIndex - startIndex);
int len = endIndex - startIndex;
if (len == 0) {
return ArrayUtils.EMPTY_CHAR_ARRAY;
}
char chars[] = new char[len];
System.arraycopy(buf, startIndex, chars, 0, len);
return chars;
}

149
src/test/org/apache/commons/lang/text/StrBuilderTest.java
View File

@ -751,11 +751,6 @@ public void testAppendWithSeparatorsWithNullText() {
assertEquals("foo,null,baz", sb.toString());
}
//-----------------------------------------------------------------------
public void testCharArray() {
// TODO
}
public void testInsert() {
StrBuilder sb = new StrBuilder();
@ -1073,4 +1068,148 @@ public void testInsertWithNullText() {
assertEquals("foonullbarbaz", sb.toString());
}
public void testToCharArray ( ) {
StrBuilder sb = new StrBuilder();
char[] a = sb.toCharArray();
assertNotNull ("toCharArray() result is null", a);
assertEquals ("toCharArray() result is too large", 0, a.length);
sb.append("junit");
a = sb.toCharArray();
assertEquals ("toCharArray() result incorrect length",5, a.length);
assertTrue ("toCharArray() result does not match",Arrays.equals("junit".toCharArray(), a));
}
public void testToCharArrayIntInt() {
StrBuilder sb = new StrBuilder();
sb.append("junit");
char[] a = sb.toCharArray(0, 20); //too large test
assertEquals ("toCharArray(int,int) result incorrect length",5, a.length);
assertTrue ("toCharArray(int,int) result does not match",Arrays.equals("junit".toCharArray(), a));
a = sb.toCharArray(0, 4);
assertEquals ("toCharArray(int,int) result incorrect length",4, a.length);
assertTrue ("toCharArray(int,int) result does not match",Arrays.equals("juni".toCharArray(), a));
a = sb.toCharArray(0, 4);
assertEquals ("toCharArray(int,int) result incorrect length",4, a.length);
assertTrue ("toCharArray(int,int) result does not match",Arrays.equals("juni".toCharArray(), a));
a = sb.toCharArray(0,1);
assertNotNull ("toCharArray(int,int) result is null", a);
try {
sb.toCharArray(-1, 5);
fail ("no string index out of bound on -1");
}
catch (StringIndexOutOfBoundsException e) {}
try {
sb.toCharArray(6, 5);
fail ("no string index out of bound on -1");
}
catch (StringIndexOutOfBoundsException e) {}
}
public void testGetChars ( ) {
StrBuilder sb = new StrBuilder();
char[] input = new char[10];
char[] a = sb.getChars(input);
assertSame (input, a);
assertTrue(Arrays.equals(new char[10], a));
sb.append("junit");
a = sb.getChars(input);
assertSame(input, a);
assertTrue(Arrays.equals(new char[] {'j','u','n','i','t',0,0,0,0,0},a));
a = sb.getChars(null);
assertNotSame(input,a);
assertEquals(5,a.length);
assertTrue(Arrays.equals("junit".toCharArray(),a));
input = new char[5];
a = sb.getChars(input);
assertSame(input, a);
input = new char[4];
a = sb.getChars(input);
assertNotSame(input, a);
}
public void testGetCharsIntIntCharArrayInt( ) {
StrBuilder sb = new StrBuilder();
sb.append("junit");
char[] a = new char[5];
sb.getChars(0,5,a,0);
assertTrue(Arrays.equals(new char[] {'j','u','n','i','t'},a));
a = new char[5];
sb.getChars(0,2,a,3);
assertTrue(Arrays.equals(new char[] {0,0,0,'j','u'},a));
try {
sb.getChars(-1,0,a,0);
fail("no exception");
}
catch (StringIndexOutOfBoundsException e) {
}
try {
sb.getChars(0,-1,a,0);
fail("no exception");
}
catch (StringIndexOutOfBoundsException e) {
}
try {
sb.getChars(0,20,a,0);
fail("no exception");
}
catch (StringIndexOutOfBoundsException e) {
}
try {
sb.getChars(4,2,a,0);
fail("no exception");
}
catch (StringIndexOutOfBoundsException e) {
}
}
public void testAppendStringBuffer() {
StrBuilder sb = new StrBuilder();
sb = sb.append(new StringBuffer());
assertNotNull(sb);
sb = sb.append(new StringBuffer("junit"));
assertEquals ("junit", sb.toString());
}
public void testAppendStrBuilder() {
StrBuilder sb = new StrBuilder();
sb = sb.append((StrBuilder)null);
assertNotNull(sb);
sb = sb.append(new StrBuilder());
assertNotNull(sb);
assertEquals("", sb.toString());
}
public void toStringBuffer() {
StrBuilder sb = new StrBuilder();
assertEquals (new StringBuffer().toString(), sb.toStringBuffer().toString());
sb.append("junit");
assertEquals(new StringBuffer("junit").toString(), sb.toStringBuffer().toString());
}
}