Bug#974181: python3-sasview: tests fail with h5py 3.1

[Drew Parsons]

Package: sasview
Version: 5.0.3-1
Followup-For: Bug #974181

Still FTBFS with PR1683 and h5py 3.1, failing build-time tests:

________________________ nxcansas_writer.test_write_1d _________________________

self = <test.fileconverter.test.utest_nxcansas_writer.nxcansas_writer testMethod=test_write_1d>

    def test_write_1d(self):
        self.writer.write([self.data_1d], self.write_file_1d)
>       data = self.loader.load(self.write_file_1d)

test/fileconverter/test/utest_nxcansas_writer.py:34:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
sas/sascalc/dataloader/loader.py:390: in load
    return self.__registry.load(file, format)
sas/sascalc/dataloader/loader.py:85: in load
    return self.load_using_generic_loaders(path)
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

self = <sas.sascalc.dataloader.loader.Registry object at 0x7f5c040ff6a0>
path = '/home/drew/projects/sasview/build/sasview/.pybuild/cpython3_3.8_sasview/build/test/fileconverter/test/export1d.h5'
        
    def load_using_generic_loaders(self, path):
        """
        If the expected reader cannot load the file or no known loader exists,
        attempt to load the file using a few defaults readers
        :param path: file path
        :return: List of Data1D and Data2D objects
        """
        module_list = readers.get_generic_readers()
        for module in module_list:
            reader = module.Reader()
            try:
                data_list = reader.read(path)
                if data_list:
                    return data_list
            except Exception as e:
                # Cycle through all generic readers
                pass
        # Only throw exception if all generic readers fail
>       raise NoKnownLoaderException(
            "Generic readers failed to load %s" % path)
E       sas.sascalc.dataloader.loader_exceptions.NoKnownLoaderException: Generic readers failed to load /home/drew/projects/sasview/build/sasview/.pybuild/cpython3_3.8_sasview/build/test/fileconverter/test/expor
t1d.h5

sas/sascalc/dataloader/loader.py:117: NoKnownLoaderException
----------------------------- Captured stderr call -----------------------------
Traceback (most recent call last):
  File "/home/drew/projects/sasview/build/sasview/.pybuild/cpython3_3.8_sasview/build/sas/sascalc/dataloader/loader.py", line 85, in load
    return self.load_using_generic_loaders(path)
  File "/home/drew/projects/sasview/build/sasview/.pybuild/cpython3_3.8_sasview/build/sas/sascalc/dataloader/loader.py", line 117, in load_using_generic_loaders
    raise NoKnownLoaderException(
sas.sascalc.dataloader.loader_exceptions.NoKnownLoaderException: Generic readers failed to load /home/drew/projects/sasview/build/sasview/.pybuild/cpython3_3.8_sasview/build/test/fileconverter/test/export1d.h5
------------------------------ Captured log call -------------------------------
WARNING  sas.sascalc.dataloader.file_reader_base_class:file_reader_base_class.py:168 SasView cannot load /home/drew/projects/sasview/build/sasview/.pybuild/cpython3_3.8_sasview/build/test/fileconverter/test/expo
rt1d.h5.
                                                                                     Invalid XML syntax
WARNING  sas.sascalc.dataloader.file_reader_base_class:file_reader_base_class.py:38 Unable to decode b"\x89HDF\r\n\x1a\n\x00\x00\x00\x00\x00\x08\x08\x00\x04\x00\x10\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x0



I don't think character encoding is the problem as such.  The later
error "Invalid XML syntax" might be a better clue. It's like it's
treating the .h5 file (binary) as an xml file (text-based).  Is it
getting .h5 mixed up with .xdmf?  (.xdmf is an xml header file reading
into a .h5 datafile)

Probably we should file the bug upstream.





-- System Information:
Debian Release: bullseye/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.9.0-3-amd64 (SMP w/8 CPU threads)
Kernel taint flags: TAINT_WARN
Locale: LANG=en_AU.UTF-8, LC_CTYPE=en_AU.UTF-8 (charmap=UTF-8), LANGUAGE=en_AU:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages sasview depends on:
ii  python3                3.9.0-3
ii  python3-numpy          1:1.19.4-1
ii  python3-pkg-resources  50.3.0-1
ii  python3-sasview        5.0.3-1+b1

sasview recommends no packages.

Versions of packages sasview suggests:
ii  sasview-doc  5.0.3-1

-- no debconf information