git-commit-vandalism/t/t4046-diff-unmerged.sh
Eric Sunshine cbe1d9d630 t4000-t4999: detect and signal failure within loop
Failures within `for` and `while` loops can go unnoticed if not detected
and signaled manually since the loop itself does not abort when a
contained command fails, nor will a failure necessarily be detected when
the loop finishes since the loop returns the exit code of the last
command it ran on the final iteration, which may not be the command
which failed. Therefore, detect and signal failures manually within
loops using the idiom `|| return 1` (or `|| exit 1` within subshells).

Signed-off-by: Eric Sunshine <sunshine@sunshineco.com>
Reviewed-by: Elijah Newren <newren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 10:29:48 -08:00

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#!/bin/sh
test_description='diff with unmerged index entries'
. ./test-lib.sh
test_expect_success setup '
for i in 0 1 2 3
do
blob=$(echo $i | git hash-object --stdin) &&
eval "blob$i=$blob" &&
eval "m$i=\"100644 \$blob$i $i\"" || return 1
done &&
paths= &&
for b in o x
do
for o in o x
do
for t in o x
do
path="$b$o$t" &&
case "$path" in ooo) continue ;; esac &&
paths="$paths$path " &&
p=" $path" &&
case "$b" in x) echo "$m1$p" ;; esac &&
case "$o" in x) echo "$m2$p" ;; esac &&
case "$t" in x) echo "$m3$p" ;; esac ||
return 1
done
done
done >ls-files-s.expect &&
git update-index --index-info <ls-files-s.expect &&
git ls-files -s >ls-files-s.actual &&
test_cmp ls-files-s.expect ls-files-s.actual
'
test_expect_success 'diff-files -0' '
for path in $paths
do
>"$path" &&
echo ":000000 100644 $ZERO_OID $ZERO_OID U $path" || return 1
done >diff-files-0.expect &&
git diff-files -0 >diff-files-0.actual &&
test_cmp diff-files-0.expect diff-files-0.actual
'
test_expect_success 'diff-files -1' '
for path in $paths
do
>"$path" &&
echo ":000000 100644 $ZERO_OID $ZERO_OID U $path" &&
case "$path" in
x??) echo ":100644 100644 $blob1 $ZERO_OID M $path"
esac || return 1
done >diff-files-1.expect &&
git diff-files -1 >diff-files-1.actual &&
test_cmp diff-files-1.expect diff-files-1.actual
'
test_expect_success 'diff-files -2' '
for path in $paths
do
>"$path" &&
echo ":000000 100644 $ZERO_OID $ZERO_OID U $path" &&
case "$path" in
?x?) echo ":100644 100644 $blob2 $ZERO_OID M $path"
esac || return 1
done >diff-files-2.expect &&
git diff-files -2 >diff-files-2.actual &&
test_cmp diff-files-2.expect diff-files-2.actual &&
git diff-files >diff-files-default-2.actual &&
test_cmp diff-files-2.expect diff-files-default-2.actual
'
test_expect_success 'diff-files -3' '
for path in $paths
do
>"$path" &&
echo ":000000 100644 $ZERO_OID $ZERO_OID U $path" &&
case "$path" in
??x) echo ":100644 100644 $blob3 $ZERO_OID M $path"
esac || return 1
done >diff-files-3.expect &&
git diff-files -3 >diff-files-3.actual &&
test_cmp diff-files-3.expect diff-files-3.actual
'
test_done