/// <summary>
/// Create a copy of this iterator </summary>
/// <returns> A copy of this </returns>
public virtual Object Clone()
{
CharArrayIterator c = new CharArrayIterator(Chars, Begin);
c.Pos = this.Pos;
return(c);
}
public virtual void TestConsumeSentenceInstance()
{
// we use the default locale, as its randomized by LuceneTestCase
var bi = BreakIterator.CreateSentenceInstance(Locale.GetUS());
var ci = CharArrayIterator.NewSentenceInstance();
for (var i = 0; i < 10000; i++)
{
var text = TestUtil.RandomUnicodeString(Random()).toCharArray();
ci.SetText(text, 0, text.Length);
Consume(bi, ci);
}
}
private string CharacterIteratorToString()
{
string fullText;
if (text is CharArrayIterator)
{
CharArrayIterator charArrayIterator = (CharArrayIterator)text;
fullText = new string(charArrayIterator.Text, charArrayIterator.Start, charArrayIterator.Length);
}
else
{
// TODO: is there a better way to extract full text from arbitrary CharacterIterators?
StringBuilder builder = new StringBuilder();
for (char ch = text.First(); ch != CharacterIterator.Done; ch = text.Next())
{
builder.Append(ch);
}
fullText = builder.ToString();
text.SetIndex(text.BeginIndex);
}
return(fullText);
}
public virtual void TestSentenceInstance()
{
DoTests(CharArrayIterator.NewSentenceInstance());
}
public virtual void TestWordInstance()
{
DoTests(CharArrayIterator.NewWordInstance());
}
/* run this to test if your JRE is buggy
* public void testSentenceInstanceJREBUG() {
* // we use the default locale, as its randomized by LuceneTestCase
* BreakIterator bi = BreakIterator.getSentenceInstance(Locale.getDefault());
* Segment ci = new Segment();
* for (int i = 0; i < 10000; i++) {
* char text[] = TestUtil.randomUnicodeString(random).toCharArray();
* ci.array = text;
* ci.offset = 0;
* ci.count = text.length;
* consume(bi, ci);
* }
* }
*/
private void DoTests(CharArrayIterator ci)
{
// basics
ci.SetText("testing".ToCharArray(), 0, "testing".Length);
assertEquals(0, ci.BeginIndex);
assertEquals(7, ci.EndIndex);
assertEquals(0, ci.Index);
assertEquals('t', ci.Current());
assertEquals('e', ci.Next());
assertEquals('g', ci.Last());
assertEquals('n', ci.Previous());
assertEquals('t', ci.First());
assertEquals(CharacterIterator.DONE, ci.Previous());
// first()
ci.SetText("testing".ToCharArray(), 0, "testing".Length);
ci.Next();
// Sets the position to getBeginIndex() and returns the character at that position.
assertEquals('t', ci.First());
assertEquals(ci.BeginIndex, ci.Index);
// or DONE if the text is empty
ci.SetText(new char[] { }, 0, 0);
assertEquals(CharacterIterator.DONE, ci.First());
// last()
ci.SetText("testing".ToCharArray(), 0, "testing".Length);
// Sets the position to getEndIndex()-1 (getEndIndex() if the text is empty)
// and returns the character at that position.
assertEquals('g', ci.Last());
assertEquals(ci.Index, ci.EndIndex - 1);
// or DONE if the text is empty
ci.SetText(new char[] { }, 0, 0);
assertEquals(CharacterIterator.DONE, ci.Last());
assertEquals(ci.EndIndex, ci.Index);
// current()
// Gets the character at the current position (as returned by getIndex()).
ci.SetText("testing".ToCharArray(), 0, "testing".Length);
assertEquals('t', ci.Current());
ci.Last();
ci.Next();
// or DONE if the current position is off the end of the text.
assertEquals(CharacterIterator.DONE, ci.Current());
// next()
ci.SetText("te".ToCharArray(), 0, 2);
// Increments the iterator's index by one and returns the character at the new index.
assertEquals('e', ci.Next());
assertEquals(1, ci.Index);
// or DONE if the new position is off the end of the text range.
assertEquals(CharacterIterator.DONE, ci.Next());
assertEquals(ci.EndIndex, ci.Index);
// setIndex()
ci.SetText("test".ToCharArray(), 0, "test".Length);
try
{
ci.SetIndex(5);
fail();
}
catch (Exception e)
{
assertTrue(e is System.ArgumentException);
}
// clone()
var text = "testing".ToCharArray();
ci.SetText(text, 0, text.Length);
ci.Next();
var ci2 = ci.Clone() as CharArrayIterator;
assertEquals(ci.Index, ci2.Index);
assertEquals(ci.Next(), ci2.Next());
assertEquals(ci.Last(), ci2.Last());
}
