private void testFormat(String format) {
ImageReader reader = ImageIO.getImageReadersByFormatName(format).next();
ImageWriter writer = ImageIO.getImageWritersByFormatName(format).next();
assertEquals(
"getImageReader() returns an incorrect reader for " + format,
ImageIO.getImageReader(writer).getClass(),
reader.getClass());
assertEquals(
"getImageWriter() returns an incorrect writer for " + format,
ImageIO.getImageWriter(reader).getClass(),
writer.getClass());
}
public void testGetNullReaderWriter() throws Exception {
try {
ImageIO.getImageWriter(null);
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException expected) {
// Ok
}
try {
ImageIO.getImageReader(null);
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException expected) {
// Ok
}
}
public void testGetWriterMIMETypes() {
Set<String> expectedMIMETypes =
new HashSet<String>(Arrays.asList(new String[] {"image/x-png", "image/png", "image/jpeg"}));
Set<String> actualMIMETypes = new HashSet<String>(Arrays.asList(ImageIO.getWriterMIMETypes()));
assertTrue(actualMIMETypes.containsAll(expectedMIMETypes));
}
public void testReadURL() throws Exception {
// Regression for HARMONY-3135
for (URL url : listImages()) {
assertNotNull("Failed to load image from URL " + url, ImageIO.read(url));
assertFalse(
"The current thread has been interrupted! URL: " + url, // $NON-NLS-1$
Thread.currentThread().isInterrupted());
}
}
public void testGetWriterFormatNames() {
Set<String> expectedFormatNames =
new HashSet<String>(
Arrays.asList(new String[] {"JPG", "jpg", "JPEG", "jpeg", "PNG", "png"}));
Set<String> actualFormatNames =
new HashSet<String>(Arrays.asList(ImageIO.getWriterFormatNames()));
assertTrue(actualFormatNames.containsAll(expectedFormatNames));
}
public void testCache() throws Exception {
ImageIO.setUseCache(true);
assertTrue("Failed to enable cache", ImageIO.getUseCache());
ImageIO.setUseCache(false);
assertFalse("Failed to disable cache", ImageIO.getUseCache());
ImageIO.setCacheDirectory(null);
assertNull("Failed to set cache directory", ImageIO.getCacheDirectory());
try {
ImageIO.setCacheDirectory(new File(""));
fail("IllegalArgumentException expected");
} catch (IllegalArgumentException expected) {
// OK
}
}