@Test
public void testFitsDeleteHdu() throws Exception {
try (Fits fits1 = makeAsciiTable()) {
fits1.read();
Exception actual = null;
try {
fits1.deleteHDU(-2);
} catch (FitsException ex) {
actual = ex;
}
Assert.assertNotNull(actual);
Assert.assertNull(fits1.getHDU(99));
// will be ignored
fits1.insertHDU(null, 99);
fits1.deleteHDU(2);
fits1.deleteHDU(2);
writeFile(fits1, TARGET_BASIC_FITS_TEST_FITS);
}
Fits fits1 = new Fits(new File(TARGET_BASIC_FITS_TEST_FITS));
fits1.readHDU();
AsciiTableHDU hdu2 = (AsciiTableHDU) fits1.readHDU();
AsciiTableHDU hdu3 = (AsciiTableHDU) fits1.readHDU();
Assert.assertArrayEquals(new int[] {11}, (int[]) hdu2.getData().getElement(1, 1));
Assert.assertArrayEquals(new int[] {41}, (int[]) hdu3.getData().getElement(1, 1));
hdu3.getData();
}
/**
* this test is only for manual usage with enough memory allocated.
*
* @throws Exception
*/
@Test
@Ignore
public void testVeryBigDataFiles() throws Exception {
Fits f = new Fits();
ImageData data = new ImageData(new float[50000][50000]);
Header manufactureHeader = ImageHDU.manufactureHeader(data);
f.addHDU(FitsFactory.hduFactory(manufactureHeader, data));
BufferedFile bf = new BufferedFile("target/big.fits", "rw");
f.write(bf);
System.out.println(Arrays.toString(ArrayFuncs.getDimensions(f.getHDU(0).getData().getData())));
f = new Fits("target/big.fits");
System.out.println(Arrays.toString(ArrayFuncs.getDimensions(f.getHDU(0).getData().getData())));
}
@Test
public void testFitsSkipHdu() throws Exception {
Fits fits1 = makeAsciiTable();
BasicHDU<?> image = fits1.readHDU();
AsciiTableHDU hdu2 = (AsciiTableHDU) fits1.readHDU();
fits1.skipHDU(2);
AsciiTableHDU hdu3 = (AsciiTableHDU) fits1.readHDU();
hdu2.info(System.out);
hdu3.info(System.out);
Assert.assertArrayEquals(new int[] {11}, (int[]) hdu2.getData().getElement(1, 1));
Assert.assertArrayEquals(new int[] {41}, (int[]) hdu3.getData().getElement(1, 1));
hdu3.getData();
}
@Test
public void convertAsciiToBinaryTable() throws Exception {
FitsFactory.setUseAsciiTables(false);
Fits fits1 = makeAsciiTable();
fits1.readHDU();
BinaryTableHDU hdu2 = (BinaryTableHDU) fits1.readHDU();
fits1.skipHDU(2);
BinaryTableHDU hdu3 = (BinaryTableHDU) fits1.readHDU();
hdu2.info(System.out);
hdu3.info(System.out);
Assert.assertArrayEquals(new int[] {11}, (int[]) hdu2.getData().getElement(1, 1));
Assert.assertArrayEquals(new int[] {41}, (int[]) hdu3.getData().getElement(1, 1));
hdu3.getData();
}
@Test
public void testHduFromHeader() throws Exception {
Header header = new Header();
header.addValue("SIMPLE", true, "");
header.addValue("BITPIX", 8, "");
header.addValue("NAXIS", 2, "");
header.addValue("NAXIS1", 4, "");
header.addValue("NAXIS3", 4, "");
ImageHDU hdu = (ImageHDU) Fits.makeHDU(header);
Assert.assertNotNull(hdu);
}
@Test
public void testFitsUndefinedHdu4() throws Exception {
Fits fits1 = makeAsciiTable();
fits1.read();
byte[] undefinedData = new byte[1000];
for (int index = 0; index < undefinedData.length; index++) {
undefinedData[index] = (byte) index;
}
Data data = UndefinedHDU.encapsulate(undefinedData);
Header header = new Header();
header.pointToData(data);
fits1.addHDU(FitsFactory.hduFactory(header, data));
BufferedDataOutputStream os =
new BufferedDataOutputStream(new FileOutputStream("target/UndefindedHDU4.fits"));
fits1.write(os);
os.close();
Fits fits2 = new Fits("target/UndefindedHDU4.fits");
BasicHDU<?>[] hdus = fits2.read();
byte[] rereadUndefinedData =
(byte[]) ((UndefinedData) hdus[hdus.length - 1].getData()).getData();
Assert.assertArrayEquals(undefinedData, rereadUndefinedData);
ByteArrayOutputStream out = new ByteArrayOutputStream();
hdus[hdus.length - 1].info(new PrintStream(out));
String undefinedInfo = new String(out.toByteArray());
Assert.assertTrue(undefinedInfo.indexOf("Apparent size:1000") >= 0);
}
private Fits makeAsciiTable() throws Exception {
// Create the new ASCII table.
Fits f = new Fits();
f.addHDU(Fits.makeHDU(getSampleCols(10f)));
f.addHDU(Fits.makeHDU(getSampleCols(20f)));
f.addHDU(Fits.makeHDU(getSampleCols(30f)));
f.addHDU(Fits.makeHDU(getSampleCols(40f)));
writeFile(f, TARGET_BASIC_FITS_TEST_FITS);
return new Fits(new File(TARGET_BASIC_FITS_TEST_FITS));
}
// TODO handle uncaught exceptions
public FitsImage(Fits fitsFile, ImageController controller) throws FitsException, IOException {
this.controller = controller;
this.fitsFile = fitsFile;
this.hdu = (ImageHDU) fitsFile.getHDU(0);
;
width = hdu.getAxes()[1];
height = hdu.getAxes()[0];
this.tiler = hdu.getTiler();
setNanColour(controller.getNanColour());
prepareData();
createHistogram();
minValue = histogram.getMinValue();
maxValue = histogram.getMaxValue();
writeImage();
}
@Test
public void testFitsDeleteHduNewPrimary() throws Exception {
Fits fits1 = makeAsciiTable();
fits1.read();
fits1.deleteHDU(0);
for (int index = 0; index < 4; index++) {
fits1.deleteHDU(1);
}
BasicHDU<?> dummyHDU = BasicHDU.getDummyHDU();
dummyHDU.addValue("TEST", "XYZ", null);
fits1.addHDU(dummyHDU);
fits1.deleteHDU(0);
writeFile(fits1, TARGET_BASIC_FITS_TEST_FITS);
fits1 = new Fits(new File(TARGET_BASIC_FITS_TEST_FITS));
Assert.assertEquals(1, fits1.read().length);
Assert.assertEquals("XYZ", fits1.getHDU(0).getTrimmedString("TEST"));
}
@Test
public void testDifferentTypes() throws Exception {
FitsException actual = null;
try {
new Fits((String) null, false);
} catch (FitsException ex) {
actual = ex;
}
Assert.assertNotNull(actual);
try (Fits fits = new Fits("nom/tam/fits/test/test.fits", false)) {
Assert.assertNotNull(fits.readHDU());
Assert.assertEquals(1, fits.currentSize());
}
try (Fits fits =
new Fits(
"file://"
+ new File("src/test/resources/nom/tam/fits/test/test.fits").getAbsolutePath(),
false)) {
Assert.assertNotNull(fits.readHDU());
}
actual = null;
try {
new Fits(
"file://" + new File("src/test/resources/nom/tam/fits/test/test.fitsX").getAbsolutePath(),
false);
} catch (FitsException ex) {
actual = ex;
}
Assert.assertNotNull(actual);
actual = null;
try {
new Fits(
new URL(
"file://"
+ new File("src/test/resources/nom/tam/fits/test/test.fitsX").getAbsolutePath()),
false);
} catch (FitsException ex) {
actual = ex;
}
Assert.assertNotNull(actual);
try (Fits fits = new Fits("src/test/resources/nom/tam/fits/test/test.fits", false)) {
Assert.assertNotNull(fits.readHDU());
}
}
@Test
public void testFitsUndefinedHdu() throws Exception {
Fits fits1 = makeAsciiTable();
fits1.read();
byte[] undefinedData = new byte[1000];
for (int index = 0; index < undefinedData.length; index++) {
undefinedData[index] = (byte) index;
}
fits1.addHDU(Fits.makeHDU(new UndefinedData(undefinedData)));
BufferedDataOutputStream os =
new BufferedDataOutputStream(new FileOutputStream("target/UndefindedHDU.fits"));
fits1.write(os);
os.close();
Fits fits2 = new Fits("target/UndefindedHDU.fits");
BasicHDU<?>[] hdus = fits2.read();
byte[] rereadUndefinedData =
(byte[]) ((UndefinedData) hdus[hdus.length - 1].getData()).getData();
Assert.assertArrayEquals(undefinedData, rereadUndefinedData);
}
@Test
public void testFitsUndefinedHdu3() throws Exception {
Fits fits1 = makeAsciiTable();
fits1.read();
byte[] undefinedData = new byte[1000];
for (int index = 0; index < undefinedData.length; index++) {
undefinedData[index] = (byte) index;
}
Data data = UndefinedHDU.encapsulate(undefinedData);
Header header = new Header(data);
Cursor<String, HeaderCard> iter = header.iterator();
String[] headers = new String[header.getNumberOfCards() - 1];
int index = 0;
while (iter.hasNext()) {
HeaderCard headerCard = iter.next();
// the EXTEND key will be deleted later on because the header is no
// primary header so don't use it
if (!headerCard.getKey().equals("EXTEND")) {
headers[index++] = headerCard.toString();
}
}
Header newHeader = new Header(headers);
for (index = 0; index < headers.length; index++) {
Assert.assertEquals(header.getCard(index), newHeader.getCard(index));
}
fits1.addHDU(FitsFactory.hduFactory(newHeader, data));
BufferedDataOutputStream os =
new BufferedDataOutputStream(new FileOutputStream("target/UndefindedHDU3.fits"));
fits1.write(os);
os.close();
Fits fits2 = new Fits("target/UndefindedHDU3.fits");
BasicHDU[] hdus = fits2.read();
for (index = 0; index < headers.length; index++) {
Assert.assertEquals(header.getCard(index), hdus[5].getHeader().getCard(index));
}
}
@Test
public void testFitsUndefinedHdu2() throws Exception {
Fits fits1 = makeAsciiTable();
fits1.read();
byte[] undefinedData = new byte[1000];
for (int index = 0; index < undefinedData.length; index++) {
undefinedData[index] = (byte) index;
}
Data data = UndefinedHDU.encapsulate(undefinedData);
Header header = UndefinedHDU.manufactureHeader(data);
fits1.addHDU(FitsFactory.HDUFactory(header, data));
BufferedDataOutputStream os =
new BufferedDataOutputStream(new FileOutputStream("target/UndefindedHDU2.fits"));
fits1.write(os);
os.close();
Fits fits2 = new Fits("target/UndefindedHDU2.fits");
BasicHDU<?>[] hdus = fits2.read();
byte[] rereadUndefinedData =
(byte[]) ((UndefinedData) hdus[hdus.length - 1].getData()).getData();
Assert.assertArrayEquals(undefinedData, rereadUndefinedData);
}
private void writeFile(Fits f, String name) throws Exception {
BufferedFile bf = new BufferedFile(name, "rw");
f.write(bf);
bf.flush();
bf.close();
}
