changeset 5870:5435777c307c stable

tests: clarify what repack.py is doing in test-cache-corruption.t

--- a/tests/test-cache-corruption.t	Mon Apr 05 16:36:35 2021 +0800
+++ b/tests/test-cache-corruption.t	Tue Apr 13 18:31:14 2021 +0800
@@ -16,17 +16,20 @@
   $ cat >> repack.py << EOF
   > import struct
   > import sys
+  > # imitating array.array().tobytes() with a platform-dependent item size
+  > sixtyfour = struct.Struct('<q') # as seen on 64-bit platforms
+  > thirtytwo = struct.Struct('<l') # as seen on 32-bit platforms
   > data = []
   > with open(sys.argv[1], 'rb') as f:
   >     header = f.read(24)
   >     while True:
-  >         buf = f.read(8)
+  >         buf = f.read(sixtyfour.size)
   >         if not buf: break
-  >         data.append(struct.unpack('<q', buf)[0])
+  >         data.append(sixtyfour.unpack(buf)[0])
   > with open(sys.argv[1], 'wb') as f:
   >     f.write(header)
   >     for item in data:
-  >         f.write(struct.pack('<l', item))
+  >         f.write(thirtytwo.pack(item))
   > EOF
 
   $ cat >> truncate.py << EOF