t/test-lib: introduce ZERO_OID

Currently we have a variable, $_z40, which contains the all-zero object ID. However, with NewHash, we'll have an all-zero object ID which is longer than 40 hex characters. In such a case, $_z40 will be a confusing name. Create a $ZERO_OID variable which will always reflect the all-zeros object ID, regardless of the length of the current hash. Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>

brian m. carlson committed May 13, 2018 at 02:24 UTC 198857bf7ed1dc2403884c1e6900650b50e0f0a9
1 file changed +2 -1
t/test-lib.sh
+2 -1
@@ -184,6 +184,7 @@ _x40="$_x35$_x05"
184 # Zero SHA-1
185 _z40=0000000000000000000000000000000000000000
186
187 +ZERO_OID=$_z40
188 EMPTY_TREE=4b825dc642cb6eb9a060e54bf8d69288fbee4904
189 EMPTY_BLOB=e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
190
@@ -195,7 +196,7 @@ LF='
196 # when case-folding filenames
197 u200c=$(printf '\342\200\214')
198
198 -export _x05 _x35 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB
199 +export _x05 _x35 _x40 _z40 LF u200c EMPTY_TREE EMPTY_BLOB ZERO_OID
200
201 # Each test should start with something like this, after copyright notices:
202 #