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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.Image;
public class TestImage
{
protected Image image;
@Before public void setUp ()
{
image = new Image();
}
@After public void tearDown ()
{
image.destroy();
image = null;
}
@Test public void creation ()
{
Image img0 = new Image(123, 456);
Image img1 = new Image("BGR3");
Image img2 = new Image(987, 654, "UYVY");
assertEquals(123, img0.getWidth());
assertEquals(456, img0.getHeight());
assertEquals(null, img0.getFormat());
assertEquals(0, img1.getWidth());
assertEquals(0, img1.getHeight());
assertEquals("BGR3", img1.getFormat());
assertEquals(987, img2.getWidth());
assertEquals(654, img2.getHeight());
assertEquals("UYVY", img2.getFormat());
}
@Test public void sequence ()
{
assertEquals(0, image.getSequence());
image.setSequence(42);
assertEquals(42, image.getSequence());
}
@Test public void size ()
{
assertEquals(0, image.getWidth());
assertEquals(0, image.getHeight());
image.setSize(640, 480);
int[] size0 = { 640, 480 };
assertArrayEquals(size0, image.getSize());
int[] size1 = { 320, 240 };
image.setSize(size1);
assertEquals(320, image.getWidth());
assertEquals(240, image.getHeight());
}
@Test public void crop ()
{
int[] zeros = { 0, 0, 0, 0 };
assertArrayEquals(zeros, image.getCrop());
image.setSize(123, 456);
int[] crop0 = { 0, 0, 123, 456 };
assertArrayEquals(crop0, image.getCrop());
image.setCrop(1, 2, 34, 56);
int[] crop1 = { 1, 2, 34, 56 };
assertArrayEquals(crop1, image.getCrop());
image.setCrop(-20, -20, 200, 500);
assertArrayEquals(crop0, image.getCrop());
int[] crop2 = { 7, 8, 90, 12};
image.setCrop(crop2);
assertArrayEquals(crop2, image.getCrop());
image.setSize(654, 321);
int[] crop3 = { 0, 0, 654, 321 };
assertArrayEquals(crop3, image.getCrop());
int[] crop4 = { -10, -10, 700, 400 };
image.setCrop(crop4);
assertArrayEquals(crop3, image.getCrop());
}
@Test public void format ()
{
assertNull(image.getFormat());
image.setFormat("Y800");
assertEquals("Y800", image.getFormat());
boolean gotException = false;
try {
image.setFormat("[]");
}
catch(IllegalArgumentException e) {
// expected
gotException = true;
}
assertTrue("Expected exception", gotException);
assertEquals("Y800", image.getFormat());
}
@Test(expected=IllegalArgumentException.class)
public void setFormatInvalid0 ()
{
image.setFormat(null);
}
@Test(expected=IllegalArgumentException.class)
public void setFormatInvalid1 ()
{
image.setFormat("");
}
@Test(expected=IllegalArgumentException.class)
public void setFormatInvalid2 ()
{
image.setFormat("YOMAMA");
}
@Test(expected=IllegalArgumentException.class)
public void setFormatInvalid3 ()
{
image.setFormat("foo");
}
@Test public void data ()
{
assertNull(image.getData());
int[] ints = new int[24];
image.setData(ints);
assertSame(ints, image.getData());
byte[] bytes = new byte[280];
image.setData(bytes);
assertSame(bytes, image.getData());
image.setData((byte[])null);
assertNull(image.getData());
}
@Test public void convert ()
{
image.setSize(4, 4);
image.setFormat("RGB4");
int[] rgb4 = new int[16];
byte[] exp = new byte[16];
for(int i = 0; i < 16; i++) {
int c = i * 15;
rgb4[i] = c | (c << 8) | (c << 16) | (c << 24);
exp[i] = (byte)c;
}
image.setData(rgb4);
Image gray = image.convert("Y800");
assertEquals(4, gray.getWidth());
assertEquals(4, gray.getHeight());
assertEquals("Y800", gray.getFormat());
byte[] y800 = gray.getData();
assertEquals(16, y800.length);
assertArrayEquals(exp, y800);
}
}
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