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Diffstat (limited to 't/t1001-read-tree-m-2way.sh')
| -rwxr-xr-x | t/t1001-read-tree-m-2way.sh | 417 |
1 files changed, 417 insertions, 0 deletions
diff --git a/t/t1001-read-tree-m-2way.sh b/t/t1001-read-tree-m-2way.sh new file mode 100755 index 000000000000..1057a96b2498 --- /dev/null +++ b/t/t1001-read-tree-m-2way.sh @@ -0,0 +1,417 @@ +#!/bin/sh +# +# Copyright (c) 2005 Junio C Hamano +# + +test_description='Two way merge with read-tree -m $H $M + +This test tries two-way merge (aka fast-forward with carry forward). + +There is the head (called H) and another commit (called M), which is +simply ahead of H. The index and the work tree contains a state that +is derived from H, but may also have local changes. This test checks +all the combinations described in the two-tree merge "carry forward" +rules, found in <Documentation/git read-tree.txt>. + +In the test, these paths are used: + bozbar - in H, stays in M, modified from bozbar to gnusto + frotz - not in H added in M + nitfol - in H, stays in M unmodified + rezrov - in H, deleted in M + yomin - not in H or M +' +. ./test-lib.sh +. "$TEST_DIRECTORY"/lib-read-tree.sh + +read_tree_twoway () { + git read-tree -m "$1" "$2" && git ls-files --stage +} + +compare_change () { + sed -n >current \ + -e '/^--- /d; /^+++ /d; /^@@ /d;' \ + -e 's/^\([-+][0-7][0-7][0-7][0-7][0-7][0-7]\) '"$OID_REGEX"' /\1 X /p' \ + "$1" + test_cmp expected current +} + +check_cache_at () { + clean_if_empty=$(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 +} + +cat >bozbar-old <<\EOF +This is a sample file used in two-way fast-forward merge +tests. Its second line ends with a magic word bozbar +which will be modified by the merged head to gnusto. +It has some extra lines so that external tools can +successfully merge independent changes made to later +lines (such as this one), avoiding line conflicts. +EOF + +sed -e 's/bozbar/gnusto (earlier bozbar)/' bozbar-old >bozbar-new + +test_expect_success 'setup' ' + echo frotz >frotz && + echo nitfol >nitfol && + cat bozbar-old >bozbar && + echo rezrov >rezrov && + echo yomin >yomin && + git update-index --add nitfol bozbar rezrov && + treeH=$(git write-tree) && + echo treeH $treeH && + git ls-tree $treeH && + + cat bozbar-new >bozbar && + git update-index --add frotz bozbar --force-remove rezrov && + git ls-files --stage >M.out && + treeM=$(git write-tree) && + echo treeM $treeM && + git ls-tree $treeM && + git diff-tree $treeH $treeM +' + +test_expect_success '1, 2, 3 - no carry forward' ' + rm -f .git/index && + read_tree_twoway $treeH $treeM && + git ls-files --stage >1-3.out && + test_cmp M.out 1-3.out && + check_cache_at bozbar dirty && + check_cache_at frotz dirty && + check_cache_at nitfol dirty +' +echo '+100644 X 0 yomin' >expected + +test_expect_success '4 - carry forward local addition.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + git update-index --add yomin && + read_tree_twoway $treeH $treeM && + git ls-files --stage >4.out && + test_must_fail git diff --no-index M.out 4.out >4diff.out && + compare_change 4diff.out expected && + check_cache_at yomin clean +' + +test_expect_success '5 - carry forward local addition.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo yomin >yomin && + git update-index --add yomin && + echo yomin yomin >yomin && + read_tree_twoway $treeH $treeM && + git ls-files --stage >5.out && + test_must_fail git diff --no-index M.out 5.out >5diff.out && + compare_change 5diff.out expected && + check_cache_at yomin dirty +' + +test_expect_success '6 - local addition already has the same.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + git update-index --add frotz && + read_tree_twoway $treeH $treeM && + git ls-files --stage >6.out && + test_cmp M.out 6.out && + check_cache_at frotz clean +' + +test_expect_success '7 - local addition already has the same.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo frotz >frotz && + git update-index --add frotz && + echo frotz frotz >frotz && + read_tree_twoway $treeH $treeM && + git ls-files --stage >7.out && + test_cmp M.out 7.out && + check_cache_at frotz dirty +' + +test_expect_success '8 - conflicting addition.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo frotz frotz >frotz && + git update-index --add frotz && + if read_tree_twoway $treeH $treeM; then false; else :; fi +' + +test_expect_success '9 - conflicting addition.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo frotz frotz >frotz && + git update-index --add frotz && + echo frotz >frotz && + if read_tree_twoway $treeH $treeM; then false; else :; fi +' + +test_expect_success '10 - path removed.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo rezrov >rezrov && + git update-index --add rezrov && + read_tree_twoway $treeH $treeM && + git ls-files --stage >10.out && + test_cmp M.out 10.out +' + +test_expect_success '11 - dirty path removed.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo rezrov >rezrov && + git update-index --add rezrov && + echo rezrov rezrov >rezrov && + if read_tree_twoway $treeH $treeM; then false; else :; fi +' + +test_expect_success '12 - unmatching local changes being removed.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo rezrov rezrov >rezrov && + git update-index --add rezrov && + if read_tree_twoway $treeH $treeM; then false; else :; fi +' + +test_expect_success '13 - unmatching local changes being removed.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo rezrov rezrov >rezrov && + git update-index --add rezrov && + echo rezrov >rezrov && + if read_tree_twoway $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 && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo nitfol nitfol >nitfol && + git update-index --add nitfol && + read_tree_twoway $treeH $treeM && + git ls-files --stage >14.out && + test_must_fail git diff --no-index M.out 14.out >14diff.out && + compare_change 14diff.out expected && + check_cache_at nitfol clean +' + +test_expect_success '15 - unchanged in two heads.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo nitfol nitfol >nitfol && + git update-index --add nitfol && + echo nitfol nitfol nitfol >nitfol && + read_tree_twoway $treeH $treeM && + git ls-files --stage >15.out && + test_must_fail git diff --no-index M.out 15.out >15diff.out && + compare_change 15diff.out expected && + check_cache_at nitfol dirty +' + +test_expect_success '16 - conflicting local change.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo bozbar bozbar >bozbar && + git update-index --add bozbar && + if read_tree_twoway $treeH $treeM; then false; else :; fi +' + +test_expect_success '17 - conflicting local change.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + echo bozbar bozbar >bozbar && + git update-index --add bozbar && + echo bozbar bozbar bozbar >bozbar && + if read_tree_twoway $treeH $treeM; then false; else :; fi +' + +test_expect_success '18 - local change already having a good result.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + cat bozbar-new >bozbar && + git update-index --add bozbar && + read_tree_twoway $treeH $treeM && + git ls-files --stage >18.out && + test_cmp M.out 18.out && + check_cache_at bozbar clean +' + +test_expect_success '19 - local change already having a good result, further modified.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + cat bozbar-new >bozbar && + git update-index --add bozbar && + echo gnusto gnusto >bozbar && + read_tree_twoway $treeH $treeM && + git ls-files --stage >19.out && + test_cmp M.out 19.out && + check_cache_at bozbar dirty +' + +test_expect_success '20 - no local change, use new tree.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + cat bozbar-old >bozbar && + git update-index --add bozbar && + read_tree_twoway $treeH $treeM && + git ls-files --stage >20.out && + test_cmp M.out 20.out && + check_cache_at bozbar dirty +' + +test_expect_success '21 - no local change, dirty cache.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + cat bozbar-old >bozbar && + git update-index --add bozbar && + echo gnusto gnusto >bozbar && + if read_tree_twoway $treeH $treeM; then false; else :; fi +' + +# This fails with straight two-way fast-forward. +test_expect_success '22 - local change cache updated.' ' + rm -f .git/index && + read_tree_must_succeed $treeH && + git checkout-index -u -f -q -a && + sed -e "s/such as/SUCH AS/" bozbar-old >bozbar && + git update-index --add bozbar && + if read_tree_twoway $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_twoway $treeDF $treeDFDF && + git ls-files --stage >DFDFcheck.out && + test_cmp DFDF.out DFDFcheck.out && + check_cache_at DF/DF dirty && + : +' + +test_expect_success 'a/b (untracked) vs a case setup.' ' + rm -f .git/index && + : >a && + git update-index --add a && + treeM=$(git write-tree) && + echo treeM $treeM && + git ls-tree $treeM && + git ls-files --stage >treeM.out && + + rm -f a && + git update-index --remove a && + mkdir a && + : >a/b && + treeH=$(git write-tree) && + echo treeH $treeH && + git ls-tree $treeH +' + +test_expect_success 'a/b (untracked) vs a, plus c/d case test.' ' + read_tree_u_must_fail -u -m "$treeH" "$treeM" && + git ls-files --stage && + test -f a/b +' + +test_expect_success 'read-tree supports the super-prefix' ' + cat <<-EOF >expect && + error: Updating '\''fictional/a'\'' would lose untracked files in it + EOF + test_must_fail git --super-prefix fictional/ read-tree -u -m "$treeH" "$treeM" 2>actual && + test_cmp expect actual +' + +test_expect_success 'a/b vs a, plus c/d case setup.' ' + rm -f .git/index && + rm -fr a && + : >a && + mkdir c && + : >c/d && + git update-index --add a c/d && + treeM=$(git write-tree) && + echo treeM $treeM && + git ls-tree $treeM && + git ls-files --stage >treeM.out && + + rm -f a && + mkdir a && + : >a/b && + git update-index --add --remove a a/b && + treeH=$(git write-tree) && + echo treeH $treeH && + git ls-tree $treeH +' + +test_expect_success 'a/b vs a, plus c/d case test.' ' + read_tree_u_must_succeed -u -m "$treeH" "$treeM" && + git ls-files --stage | tee >treeMcheck.out && + test_cmp treeM.out treeMcheck.out +' + +test_expect_success '-m references the correct modified tree' ' + echo >file-a && + echo >file-b && + git add file-a file-b && + git commit -a -m "test for correct modified tree" && + git branch initial-mod && + echo b >file-b && + git commit -a -m "B" && + echo a >file-a && + git add file-a && + git ls-tree $(git write-tree) file-a >expect && + read_tree_must_succeed -m HEAD initial-mod && + git ls-tree $(git write-tree) file-a >actual && + test_cmp expect actual +' + +test_done |