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git/t/diff-lib.sh
Junio C Hamano 3af828634f tests: do not use implicit "git diff --no-index"
As a general principle, we should not use "git diff" to validate the
results of what git command that is being tested has done.  We would not
know if we are testing the command in question, or locating a bug in the
cute hack of "git diff --no-index".

Rather use test_cmp for that purpose.

Signed-off-by: Junio C Hamano <gitster@pobox.com>
2008-05-24 00:01:56 -07:00

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:
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
sanitize_diff_raw='/^:/s/ '"$_x40"' '"$_x40"' \([A-Z]\)[0-9]* / X X \1# /'
compare_diff_raw () {
# When heuristics are improved, the score numbers would change.
# Ignore them while comparing.
# Also we do not check SHA1 hash generation in this test, which
# is a job for t0000-basic.sh
sed -e "$sanitize_diff_raw" <"$1" >.tmp-1
sed -e "$sanitize_diff_raw" <"$2" >.tmp-2
test_cmp .tmp-1 .tmp-2 && rm -f .tmp-1 .tmp-2
}
sanitize_diff_raw_z='/^:/s/ '"$_x40"' '"$_x40"' \([A-Z]\)[0-9]*$/ X X \1#/'
compare_diff_raw_z () {
# When heuristics are improved, the score numbers would change.
# Ignore them while comparing.
# Also we do not check SHA1 hash generation in this test, which
# is a job for t0000-basic.sh
perl -pe 'y/\000/\012/' <"$1" | sed -e "$sanitize_diff_raw_z" >.tmp-1
perl -pe 'y/\000/\012/' <"$2" | sed -e "$sanitize_diff_raw_z" >.tmp-2
test_cmp .tmp-1 .tmp-2 && rm -f .tmp-1 .tmp-2
}
compare_diff_patch () {
# When heuristics are improved, the score numbers would change.
# Ignore them while comparing.
sed -e '
/^[dis]*imilarity index [0-9]*%$/d
/^index [0-9a-f]*\.\.[0-9a-f]/d
' <"$1" >.tmp-1
sed -e '
/^[dis]*imilarity index [0-9]*%$/d
/^index [0-9a-f]*\.\.[0-9a-f]/d
' <"$2" >.tmp-2
test_cmp .tmp-1 .tmp-2 && rm -f .tmp-1 .tmp-2
}