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git/t/t1002-read-tree-m-u-2way.sh
Jeff King 35da1bf5d6 t: use test_might_fail for diff and grep
Some tests run diff or grep to produce an output, and then
compare the output to an expected value. We know the exit
code we expect these processes to have (e.g., grep yields 0
if it produced output and 1 otherwise), so it would not make
the test wrong to look for it. But the difference between
their output and the expected output (e.g., shown by
test_cmp) is much more useful to somebody debugging the test
than the test just bailing out.

These tests break the &&-chain to skip the exit-code check
of the process. However, we can get the same effect by using
test_might_fail. Note that in some cases the test did use
"|| return 1", which meant the test was not wrong, but it
did fool --chain-lint.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2015-03-20 10:20:16 -07:00

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#!/bin/sh
#
# Copyright (c) 2005 Junio C Hamano
#
test_description='Two way merge with read-tree -m -u $H $M
This is identical to t1001, but uses -u to update the work tree as well.
'
. ./test-lib.sh
. "$TEST_DIRECTORY"/lib-read-tree.sh
compare_change () {
sed >current \
-e '1{/^diff --git /d;}' \
-e '2{/^index /d;}' \
-e '/^--- /d; /^+++ /d; /^@@ /d;' \
-e 's/^\(.[0-7][0-7][0-7][0-7][0-7][0-7]\) '"$_x40"' /\1 X /' "$1"
test_cmp expected current
}
check_cache_at () {
clean_if_empty=$(git diff-files -- "$1")
case "$clean_if_empty" in
'') echo "$1: clean" ;;
?*) echo "$1: dirty" ;;
esac
case "$2,$clean_if_empty" in
clean,) : ;;
clean,?*) false ;;
dirty,) false ;;
dirty,?*) : ;;
esac
}
test_expect_success \
setup \
'echo frotz >frotz &&
echo nitfol >nitfol &&
echo bozbar >bozbar &&
echo rezrov >rezrov &&
git update-index --add nitfol bozbar rezrov &&
treeH=$(git write-tree) &&
echo treeH $treeH &&
git ls-tree $treeH &&
echo gnusto >bozbar &&
git update-index --add frotz bozbar --force-remove rezrov &&
git ls-files --stage >M.out &&
treeM=$(git write-tree) &&
echo treeM $treeM &&
git ls-tree $treeM &&
sum bozbar frotz nitfol >M.sum &&
git diff-tree $treeH $treeM'
test_expect_success \
'1, 2, 3 - no carry forward' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >1-3.out &&
cmp M.out 1-3.out &&
sum bozbar frotz nitfol >actual3.sum &&
cmp M.sum actual3.sum &&
check_cache_at bozbar clean &&
check_cache_at frotz clean &&
check_cache_at nitfol clean'
test_expect_success \
'4 - carry forward local addition.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo "+100644 X 0 yomin" >expected &&
echo yomin >yomin &&
git update-index --add yomin &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >4.out &&
test_might_fail git diff -U0 --no-index M.out 4.out >4diff.out &&
compare_change 4diff.out expected &&
check_cache_at yomin clean &&
sum bozbar frotz nitfol >actual4.sum &&
cmp M.sum actual4.sum &&
echo yomin >yomin1 &&
diff yomin yomin1 &&
rm -f yomin1'
test_expect_success \
'5 - carry forward local addition.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
read_tree_u_must_succeed -m -u $treeH &&
echo yomin >yomin &&
git update-index --add yomin &&
echo yomin yomin >yomin &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >5.out &&
test_might_fail git diff -U0 --no-index M.out 5.out >5diff.out &&
compare_change 5diff.out expected &&
check_cache_at yomin dirty &&
sum bozbar frotz nitfol >actual5.sum &&
cmp M.sum actual5.sum &&
: dirty index should have prevented -u from checking it out. &&
echo yomin yomin >yomin1 &&
diff yomin yomin1 &&
rm -f yomin1'
test_expect_success \
'6 - local addition already has the same.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo frotz >frotz &&
git update-index --add frotz &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >6.out &&
test_cmp M.out 6.out &&
check_cache_at frotz clean &&
sum bozbar frotz nitfol >actual3.sum &&
cmp M.sum actual3.sum &&
echo frotz >frotz1 &&
diff frotz frotz1 &&
rm -f frotz1'
test_expect_success \
'7 - local addition already has the same.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo frotz >frotz &&
git update-index --add frotz &&
echo frotz frotz >frotz &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >7.out &&
test_cmp M.out 7.out &&
check_cache_at frotz dirty &&
sum bozbar frotz nitfol >actual7.sum &&
if cmp M.sum actual7.sum; then false; else :; fi &&
: dirty index should have prevented -u from checking it out. &&
echo frotz frotz >frotz1 &&
diff frotz frotz1 &&
rm -f frotz1'
test_expect_success \
'8 - conflicting addition.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo frotz frotz >frotz &&
git update-index --add frotz &&
if read_tree_u_must_succeed -m -u $treeH $treeM; then false; else :; fi'
test_expect_success \
'9 - conflicting addition.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo frotz frotz >frotz &&
git update-index --add frotz &&
echo frotz >frotz &&
if read_tree_u_must_succeed -m -u $treeH $treeM; then false; else :; fi'
test_expect_success \
'10 - path removed.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo rezrov >rezrov &&
git update-index --add rezrov &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >10.out &&
cmp M.out 10.out &&
sum bozbar frotz nitfol >actual10.sum &&
cmp M.sum actual10.sum'
test_expect_success \
'11 - dirty path removed.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo rezrov >rezrov &&
git update-index --add rezrov &&
echo rezrov rezrov >rezrov &&
if read_tree_u_must_succeed -m -u $treeH $treeM; then false; else :; fi'
test_expect_success \
'12 - unmatching local changes being removed.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo rezrov rezrov >rezrov &&
git update-index --add rezrov &&
if read_tree_u_must_succeed -m -u $treeH $treeM; then false; else :; fi'
test_expect_success \
'13 - unmatching local changes being removed.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo rezrov rezrov >rezrov &&
git update-index --add rezrov &&
echo rezrov >rezrov &&
if read_tree_u_must_succeed -m -u $treeH $treeM; then false; else :; fi'
cat >expected <<EOF
-100644 X 0 nitfol
+100644 X 0 nitfol
EOF
test_expect_success \
'14 - unchanged in two heads.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo nitfol nitfol >nitfol &&
git update-index --add nitfol &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >14.out &&
test_must_fail git diff -U0 --no-index M.out 14.out >14diff.out &&
compare_change 14diff.out expected &&
sum bozbar frotz >actual14.sum &&
grep -v nitfol M.sum > expected14.sum &&
cmp expected14.sum actual14.sum &&
sum bozbar frotz nitfol >actual14a.sum &&
if cmp M.sum actual14a.sum; then false; else :; fi &&
check_cache_at nitfol clean &&
echo nitfol nitfol >nitfol1 &&
diff nitfol nitfol1 &&
rm -f nitfol1'
test_expect_success \
'15 - unchanged in two heads.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo nitfol nitfol >nitfol &&
git update-index --add nitfol &&
echo nitfol nitfol nitfol >nitfol &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >15.out &&
test_must_fail git diff -U0 --no-index M.out 15.out >15diff.out &&
compare_change 15diff.out expected &&
check_cache_at nitfol dirty &&
sum bozbar frotz >actual15.sum &&
grep -v nitfol M.sum > expected15.sum &&
cmp expected15.sum actual15.sum &&
sum bozbar frotz nitfol >actual15a.sum &&
if cmp M.sum actual15a.sum; then false; else :; fi &&
echo nitfol nitfol nitfol >nitfol1 &&
diff nitfol nitfol1 &&
rm -f nitfol1'
test_expect_success \
'16 - conflicting local change.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo bozbar bozbar >bozbar &&
git update-index --add bozbar &&
if read_tree_u_must_succeed -m -u $treeH $treeM; then false; else :; fi'
test_expect_success \
'17 - conflicting local change.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo bozbar bozbar >bozbar &&
git update-index --add bozbar &&
echo bozbar bozbar bozbar >bozbar &&
if read_tree_u_must_succeed -m -u $treeH $treeM; then false; else :; fi'
test_expect_success \
'18 - local change already having a good result.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo gnusto >bozbar &&
git update-index --add bozbar &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >18.out &&
test_cmp M.out 18.out &&
check_cache_at bozbar clean &&
sum bozbar frotz nitfol >actual18.sum &&
cmp M.sum actual18.sum'
test_expect_success \
'19 - local change already having a good result, further modified.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo gnusto >bozbar &&
git update-index --add bozbar &&
echo gnusto gnusto >bozbar &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >19.out &&
test_cmp M.out 19.out &&
check_cache_at bozbar dirty &&
sum frotz nitfol >actual19.sum &&
grep -v bozbar M.sum > expected19.sum &&
cmp expected19.sum actual19.sum &&
sum bozbar frotz nitfol >actual19a.sum &&
if cmp M.sum actual19a.sum; then false; else :; fi &&
echo gnusto gnusto >bozbar1 &&
diff bozbar bozbar1 &&
rm -f bozbar1'
test_expect_success \
'20 - no local change, use new tree.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo bozbar >bozbar &&
git update-index --add bozbar &&
read_tree_u_must_succeed -m -u $treeH $treeM &&
git ls-files --stage >20.out &&
test_cmp M.out 20.out &&
check_cache_at bozbar clean &&
sum bozbar frotz nitfol >actual20.sum &&
cmp M.sum actual20.sum'
test_expect_success \
'21 - no local change, dirty cache.' \
'rm -f .git/index nitfol bozbar rezrov frotz &&
read_tree_u_must_succeed --reset -u $treeH &&
echo bozbar >bozbar &&
git update-index --add bozbar &&
echo gnusto gnusto >bozbar &&
if read_tree_u_must_succeed -m -u $treeH $treeM; then false; else :; fi'
# Also make sure we did not break DF vs DF/DF case.
test_expect_success \
'DF vs DF/DF case setup.' \
'rm -f .git/index &&
echo DF >DF &&
git update-index --add DF &&
treeDF=$(git write-tree) &&
echo treeDF $treeDF &&
git ls-tree $treeDF &&
rm -f DF &&
mkdir DF &&
echo DF/DF >DF/DF &&
git update-index --add --remove DF DF/DF &&
treeDFDF=$(git write-tree) &&
echo treeDFDF $treeDFDF &&
git ls-tree $treeDFDF &&
git ls-files --stage >DFDF.out'
test_expect_success \
'DF vs DF/DF case test.' \
'rm -f .git/index &&
rm -fr DF &&
echo DF >DF &&
git update-index --add DF &&
read_tree_u_must_succeed -m -u $treeDF $treeDFDF &&
git ls-files --stage >DFDFcheck.out &&
test_cmp DFDF.out DFDFcheck.out &&
check_cache_at DF/DF clean'
test_done