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import org.junit.Test;
import org.junit.Before;
import org.junit.After;
import static org.junit.Assert.*;
import net.sourceforge.zbar.*;
import java.text.CharacterIterator;
import java.text.StringCharacterIterator;
import java.util.Iterator;
public class TestScanImage
{
protected ImageScanner scanner;
protected Image image;
@Before public void setUp ()
{
scanner = new ImageScanner();
image = new Image();
}
@After public void tearDown ()
{
image = null;
scanner = null;
System.gc();
}
public static final String encoded_widths =
"9 111 212241113121211311141132 11111 311213121312121332111132 111 9";
protected void generateY800 ()
{
int width = 114, height = 85;
image.setSize(width, height);
image.setFormat("Y800");
int datalen = width * height;
byte[] data = new byte[datalen];
int y = 0;
int p = 0;
for(; y < 10 && y < height; y++)
for(int x = 0; x < width; x++)
data[p++] = -1;
for(; y < height - 10; y++) {
int x = 0;
byte color = -1;
CharacterIterator it = new StringCharacterIterator(encoded_widths);
for(char c = it.first();
c != CharacterIterator.DONE;
c = it.next())
{
if(c == ' ')
continue;
for(int dx = (int)c - 0x30; dx > 0; dx--) {
data[p++] = color;
x++;
}
color = (byte)~color;
}
for(; x < width; x++)
data[p++] = (byte)~color;
}
for(; y < height; y++)
for(int x = 0; x < width; x++)
data[p++] = -1;
assert(p == datalen);
image.setData(data);
}
protected void checkResults (SymbolSet syms)
{
assertNotNull(syms);
assert(syms.size() == 1);
Iterator<Symbol> it = syms.iterator();
assertTrue(it.hasNext());
Symbol sym = it.next();
assertNotNull(sym);
assertFalse(it.hasNext());
assertEquals(Symbol.EAN13, sym.getType());
assertEquals(sym.EAN13, sym.getType()); // cached
assertTrue(sym.getQuality() > 1);
assertEquals(0, sym.getCount());
SymbolSet comps = sym.getComponents();
assertNotNull(comps);
assertEquals(0, comps.size());
it = comps.iterator();
assertNotNull(it);
assertFalse(it.hasNext());
String data = sym.getData();
assertEquals("6268964977804", data);
byte[] bytes = sym.getDataBytes();
byte[] exp = { '6','2','6','8','9','6','4','9','7','7','8','0','4' };
assertArrayEquals(exp, bytes);
int[] r = sym.getBounds();
assertTrue(r[0] > 6);
assertTrue(r[1] > 6);
assertTrue(r[2] < 102);
assertTrue(r[3] < 73);
assertEquals(Orientation.UP, sym.getOrientation());
}
@Test public void generated ()
{
generateY800();
int n = scanner.scanImage(image);
assertEquals(1, n);
checkResults(image.getSymbols());
checkResults(scanner.getResults());
}
@Test public void config ()
{
generateY800();
scanner.setConfig(Symbol.EAN13, Config.ENABLE, 0);
int n = scanner.scanImage(image);
assertEquals(0, n);
}
@Test public void cache ()
{
generateY800();
scanner.enableCache(true);
int n = 0;
for(int i = 0; i < 10; i++) {
n = scanner.scanImage(image);
if(n > 0) {
assertTrue(i > 1);
break;
}
}
assertEquals(1, n);
checkResults(scanner.getResults());
}
@Test public void orientation()
{
generateY800();
// flip the image
int width = image.getWidth();
int height = image.getHeight();
byte[] data = image.getData();
int p = 0;
for(int y = 0; y < height; y++) {
for(int x0 = 0; x0 < width / 2; x0++) {
int x1 = width - x0 - 1;
assert(x0 < x1);
byte b = data[p + x0];
data[p + x0] = data[p + x1];
data[p + x1] = b;
}
p += width;
}
image.setData(data);
int n = scanner.scanImage(image);
assertEquals(1, n);
SymbolSet syms = scanner.getResults();
assert(syms.size() == 1);
for(Symbol sym : syms) {
assertEquals(Symbol.EAN13, sym.getType());
assertEquals("6268964977804", sym.getData());
assertEquals(Orientation.DOWN, sym.getOrientation());
}
}
}
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