package com.fasterxml.jackson.core.util;
import com.fasterxml.jackson.core.util.BufferRecycler;
import com.fasterxml.jackson.core.util.TextBuffer;
public class TestTextBuffer
extends com.fasterxml.jackson.core.BaseTest
{
/**
* Trivially simple basic test to ensure all basic append
* methods work
*/
public void testSimple()
{
TextBuffer tb = new TextBuffer(new BufferRecycler());
tb.append('a');
tb.append(new char[] { 'X', 'b' }, 1, 1);
tb.append("c", 0, 1);
assertEquals(3, tb.contentsAsArray().length);
assertEquals("abc", tb.toString());
assertNotNull(tb.expandCurrentSegment());
}
public void testLonger()
{
TextBuffer tb = new TextBuffer(new BufferRecycler());
for (int i = 0; i < 2000; ++i) {
tb.append("abc", 0, 3);
}
String str = tb.contentsAsString();
assertEquals(6000, str.length());
assertEquals(6000, tb.contentsAsArray().length);
tb.resetWithShared(new char[] { 'a' }, 0, 1);
assertEquals(1, tb.toString().length());
}
public void testLongAppend()
{
final int len = TextBuffer.MAX_SEGMENT_LEN * 3 / 2;
StringBuilder sb = new StringBuilder(len);
for (int i = 0; i < len; ++i) {
sb.append('x');
}
final String STR = sb.toString();
final String EXP = "a" + STR + "c";
// ok: first test with String:
TextBuffer tb = new TextBuffer(new BufferRecycler());
tb.append('a');
tb.append(STR, 0, len);
tb.append('c');
assertEquals(len+2, tb.size());
assertEquals(EXP, tb.contentsAsString());
// then char[]
tb = new TextBuffer(new BufferRecycler());
tb.append('a');
tb.append(STR.toCharArray(), 0, len);
tb.append('c');
assertEquals(len+2, tb.size());
assertEquals(EXP, tb.contentsAsString());
}
// [Core#152]
public void testExpand()
{
TextBuffer tb = new TextBuffer(new BufferRecycler());
char[] buf = tb.getCurrentSegment();
while (buf.length < 500 * 1000) {
char[] old = buf;
buf = tb.expandCurrentSegment();
if (old.length >= buf.length) {
fail("Expected buffer of "+old.length+" to expand, did not, length now "+buf.length);
}
}
}
}