Make export MIME type assertions robust to system differences

Accept multiple possible MIME types for gzip and zstd formats
to accommodate variations across different distributions.

Signed-off-by: Gaëtan Lehmann <gaetan.lehmann@vates.tech>

Author: glehmann

tests/misc/test_export.py

@@ -19,15 +19,15 @@ def export_test(host: Host, vm: VM, filepath: str, compress: Literal['none', 'gz
     defer(lambda: host.ssh(f'rm -f {filepath}', check=False))
     assert host.file_exists(filepath)
 
-    def check_file_type(expected: str) -> None:
-        assert host.ssh(f'file --mime-type -b {filepath}') == expected
+    def check_file_type(expected: list[str]) -> None:
+        assert host.ssh(f'file --mime-type -b {filepath}') in expected
 
     if compress == 'none':
-        check_file_type('application/x-tar')
+        check_file_type(['application/x-tar'])
     elif compress == 'gzip':
-        check_file_type('application/x-gzip')
+        check_file_type(['application/x-gzip', 'application/gzip'])
     elif compress == 'zstd':
-        check_file_type('application/octet-stream')
+        check_file_type(['application/octet-stream', 'application/zstd'])
     else:
         assert False, 'Unsupported compress mode'