tests: Disable spidev on big-endian 32-bit platforms

[hdeller]

The class IoctlSpiBase (see src/umockdev-spi.vala) has a comment that it only works on 64bit platforms.
Disable those tests on 32-bit platforms for now.

This fixes my tests on the (32-bit) hppa platform.

This patch is just to show the problem (and a possible workaround).
If you find another way to fix (or skip) this test I'm fine with that,

Thanks!
Helge

[martinpitt]

Curious, CI runs on Debian i386 and alpine i386, and passes there. But indeed src/umockdev-spi.vala mentions "This only works on 64bit machines", perhaps @benzea still remembers why. Could we make them more specific to hppa? https://en.wikipedia.org/wiki/PA-RISC says hppa is 64 bit big-endian, which would explain the ulong incompatibility. On the other hand, tests also run on s390x which is 64 bit big-endian too. So something doesn't add up here. Are you sure that your specific version of (or Debian's definition of) hppa is 32 bit?

[hdeller]

Debian/hppa is currently 32-bit big-endian only (the Linux kernel may be either 32- or 64-bit though - similiar to 32bit userspace on 64bit amd64 machine).
Compared to s390x, "unsigned" is then a 32-bit value, while on s390x it's a 64-bit value.
Maybe that's the difference?
Should be possible to test again on both platforms on the debian porterboxes.

[martinpitt]

Thanks! I adjusted the test to skip on 32 bit BE only, and also be more verbose about that fact (similar to how other tests are skipped).

[martinpitt]

Tested on the Debian hppa porter box. meson test passes now (despite #263 not yet being addressed)