def test_rawdatadiff_nodiff(self):
a = np.arange(100, dtype='uint8').reshape(10, 10)
b = a.copy()
hdu_a = DummyNonstandardExtHDU(data=a)
hdu_b = DummyNonstandardExtHDU(data=b)
diff = HDUDiff(hdu_a, hdu_b)
assert diff.identical
report = diff.report()
assert 'No differences found.' in report
def test_rawdatadiff_dimsdiff(self):
a = np.arange(100, dtype='uint8') + 10
b = a[:80].copy()
hdu_a = DummyNonstandardExtHDU(data=a)
hdu_b = DummyNonstandardExtHDU(data=b)
diff = HDUDiff(hdu_a, hdu_b)
assert not diff.identical
report = diff.report()
assert 'Data sizes differ:' in report
assert 'a: 100 bytes' in report
assert 'b: 80 bytes' in report
assert 'No further data comparison performed.' in report
def test_rawdatadiff_bytesdiff(self):
a = np.arange(100, dtype='uint8') + 10
b = a.copy()
changes = [(30, 200), (89, 170)]
for i, v in changes:
b[i] = v
hdu_a = DummyNonstandardExtHDU(data=a)
hdu_b = DummyNonstandardExtHDU(data=b)
diff = HDUDiff(hdu_a, hdu_b)
assert not diff.identical
diff_bytes = diff.diff_data.diff_bytes
assert len(changes) == len(diff_bytes)
for j, (i, v) in enumerate(changes):
assert diff_bytes[j] == (i, (i + 10, v))
report = diff.report()
assert 'Data contains differences:' in report
for i, _ in changes:
assert f'Data differs at byte {i}:' in report
assert '2 different bytes found (2.00% different).' in report
def test_identical_files_basic(self):
"""Test identicality of two simple, extensionless files."""
a = np.arange(100).reshape(10, 10)
hdu = PrimaryHDU(data=a)
hdu.writeto(self.temp('testa.fits'))
hdu.writeto(self.temp('testb.fits'))
diff = FITSDiff(self.temp('testa.fits'), self.temp('testb.fits'))
assert diff.identical
report = diff.report()
# Primary HDUs should contain no differences
assert 'Primary HDU' not in report
assert 'Extension HDU' not in report
assert 'No differences found.' in report
a = np.arange(10)
ehdu = ImageHDU(data=a)
diff = HDUDiff(ehdu, ehdu)
assert diff.identical
report = diff.report()
assert 'No differences found.' in report