mirror of
https://github.com/git/git
synced 2024-10-30 04:01:21 +00:00
4002ec3dcf
The "--super-prefix" option to "git" was initially added in [1] for use with "ls-files"[2], and shortly thereafter "submodule--helper"[3] and "grep"[4]. It wasn't until [5] that "read-tree" made use of it. At the time [5] made sense, but since then we've made "ls-files" recurse in-process in [6], "grep" in [7], and finally "submodule--helper" in the preceding commits. Let's also remove it from "read-tree", which allows us to remove the option to "git" itself. We can do this because the only remaining user of it is the submodule API, which will now invoke "read-tree" with its new "--super-prefix" option. It will only do so when the "submodule_move_head()" function is called. That "submodule_move_head()" function was then only invoked by "read-tree" itself, but now rather than setting an environment variable to pass "--super-prefix" between cmd_read_tree() we: - Set a new "super_prefix" in "struct unpack_trees_options". The "super_prefixed()" function in "unpack-trees.c" added in [5] will now use this, rather than get_super_prefix() looking up the environment variable we set earlier in the same process. - Add the same field to the "struct checkout", which is only needed to ferry the "super_prefix" in the "struct unpack_trees_options" all the way down to the "entry.c" callers of "submodule_move_head()". Those calls which used the super prefix all originated in "cmd_read_tree()". The only other caller is the "unlink_entry()" caller in "builtin/checkout.c", which now passes a "NULL". 1.74866d7579(git: make super-prefix option, 2016-10-07) 2.e77aa336f1(ls-files: optionally recurse into submodules, 2016-10-07) 3.89c8626557(submodule helper: support super prefix, 2016-12-08) 4.0281e487fd(grep: optionally recurse into submodules, 2016-12-16) 5.3d415425c7(unpack-trees: support super-prefix option, 2017-01-17) 6.188dce131f(ls-files: use repository object, 2017-06-22) 7.f9ee2fcdfa(grep: recurse in-process using 'struct repository', 2017-08-02) Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
420 lines
11 KiB
Bash
Executable file
420 lines
11 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2005 Junio C Hamano
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#
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test_description='Two way merge with read-tree -m $H $M
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This test tries two-way merge (aka fast-forward with carry forward).
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There is the head (called H) and another commit (called M), which is
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simply ahead of H. The index and the work tree contains a state that
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is derived from H, but may also have local changes. This test checks
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all the combinations described in the two-tree merge "carry forward"
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rules, found in <Documentation/git read-tree.txt>.
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In the test, these paths are used:
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bozbar - in H, stays in M, modified from bozbar to gnusto
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frotz - not in H added in M
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nitfol - in H, stays in M unmodified
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rezrov - in H, deleted in M
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yomin - not in H or M
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'
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TEST_PASSES_SANITIZE_LEAK=true
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. ./test-lib.sh
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. "$TEST_DIRECTORY"/lib-read-tree.sh
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read_tree_twoway () {
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git read-tree -m "$1" "$2" && git ls-files --stage
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}
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compare_change () {
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sed -n >current \
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-e '/^--- /d; /^+++ /d; /^@@ /d;' \
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-e 's/^\([-+][0-7][0-7][0-7][0-7][0-7][0-7]\) '"$OID_REGEX"' /\1 X /p' \
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"$1"
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test_cmp expected current
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}
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check_cache_at () {
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git diff-files -- "$1" >out &&
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clean_if_empty=$(cat out) &&
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case "$clean_if_empty" in
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'') echo "$1: clean" ;;
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?*) echo "$1: dirty" ;;
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esac &&
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case "$2,$clean_if_empty" in
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clean,) : ;;
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clean,?*) false ;;
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dirty,) false ;;
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dirty,?*) : ;;
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esac
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}
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cat >bozbar-old <<\EOF
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This is a sample file used in two-way fast-forward merge
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tests. Its second line ends with a magic word bozbar
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which will be modified by the merged head to gnusto.
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It has some extra lines so that external tools can
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successfully merge independent changes made to later
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lines (such as this one), avoiding line conflicts.
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EOF
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sed -e 's/bozbar/gnusto (earlier bozbar)/' bozbar-old >bozbar-new
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test_expect_success 'setup' '
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echo frotz >frotz &&
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echo nitfol >nitfol &&
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cat bozbar-old >bozbar &&
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echo rezrov >rezrov &&
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echo yomin >yomin &&
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git update-index --add nitfol bozbar rezrov &&
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treeH=$(git write-tree) &&
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echo treeH $treeH &&
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git ls-tree $treeH &&
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cat bozbar-new >bozbar &&
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git update-index --add frotz bozbar --force-remove rezrov &&
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git ls-files --stage >M.out &&
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treeM=$(git write-tree) &&
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echo treeM $treeM &&
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git ls-tree $treeM &&
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git diff-tree $treeH $treeM
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'
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test_expect_success '1, 2, 3 - no carry forward' '
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rm -f .git/index &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >1-3.out &&
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test_cmp M.out 1-3.out &&
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check_cache_at bozbar dirty &&
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check_cache_at frotz dirty &&
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check_cache_at nitfol dirty
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'
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echo '+100644 X 0 yomin' >expected
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test_expect_success '4 - carry forward local addition.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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git update-index --add yomin &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >4.out &&
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test_must_fail git diff --no-index M.out 4.out >4diff.out &&
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compare_change 4diff.out expected &&
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check_cache_at yomin clean
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'
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test_expect_success '5 - carry forward local addition.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo yomin >yomin &&
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git update-index --add yomin &&
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echo yomin yomin >yomin &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >5.out &&
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test_must_fail git diff --no-index M.out 5.out >5diff.out &&
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compare_change 5diff.out expected &&
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check_cache_at yomin dirty
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'
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test_expect_success '6 - local addition already has the same.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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git update-index --add frotz &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >6.out &&
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test_cmp M.out 6.out &&
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check_cache_at frotz clean
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'
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test_expect_success '7 - local addition already has the same.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo frotz >frotz &&
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git update-index --add frotz &&
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echo frotz frotz >frotz &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >7.out &&
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test_cmp M.out 7.out &&
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check_cache_at frotz dirty
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'
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test_expect_success '8 - conflicting addition.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo frotz frotz >frotz &&
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git update-index --add frotz &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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test_expect_success '9 - conflicting addition.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo frotz frotz >frotz &&
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git update-index --add frotz &&
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echo frotz >frotz &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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test_expect_success '10 - path removed.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo rezrov >rezrov &&
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git update-index --add rezrov &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >10.out &&
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test_cmp M.out 10.out
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'
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test_expect_success '11 - dirty path removed.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo rezrov >rezrov &&
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git update-index --add rezrov &&
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echo rezrov rezrov >rezrov &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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test_expect_success '12 - unmatching local changes being removed.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo rezrov rezrov >rezrov &&
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git update-index --add rezrov &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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test_expect_success '13 - unmatching local changes being removed.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo rezrov rezrov >rezrov &&
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git update-index --add rezrov &&
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echo rezrov >rezrov &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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cat >expected <<EOF
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-100644 X 0 nitfol
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+100644 X 0 nitfol
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EOF
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test_expect_success '14 - unchanged in two heads.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo nitfol nitfol >nitfol &&
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git update-index --add nitfol &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >14.out &&
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test_must_fail git diff --no-index M.out 14.out >14diff.out &&
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compare_change 14diff.out expected &&
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check_cache_at nitfol clean
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'
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test_expect_success '15 - unchanged in two heads.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo nitfol nitfol >nitfol &&
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git update-index --add nitfol &&
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echo nitfol nitfol nitfol >nitfol &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >15.out &&
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test_must_fail git diff --no-index M.out 15.out >15diff.out &&
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compare_change 15diff.out expected &&
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check_cache_at nitfol dirty
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'
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test_expect_success '16 - conflicting local change.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo bozbar bozbar >bozbar &&
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git update-index --add bozbar &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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test_expect_success '17 - conflicting local change.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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echo bozbar bozbar >bozbar &&
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git update-index --add bozbar &&
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echo bozbar bozbar bozbar >bozbar &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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test_expect_success '18 - local change already having a good result.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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cat bozbar-new >bozbar &&
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git update-index --add bozbar &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >18.out &&
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test_cmp M.out 18.out &&
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check_cache_at bozbar clean
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'
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test_expect_success '19 - local change already having a good result, further modified.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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cat bozbar-new >bozbar &&
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git update-index --add bozbar &&
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echo gnusto gnusto >bozbar &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >19.out &&
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test_cmp M.out 19.out &&
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check_cache_at bozbar dirty
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'
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test_expect_success '20 - no local change, use new tree.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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cat bozbar-old >bozbar &&
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git update-index --add bozbar &&
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read_tree_twoway $treeH $treeM &&
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git ls-files --stage >20.out &&
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test_cmp M.out 20.out &&
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check_cache_at bozbar dirty
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'
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test_expect_success '21 - no local change, dirty cache.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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cat bozbar-old >bozbar &&
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git update-index --add bozbar &&
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echo gnusto gnusto >bozbar &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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# This fails with straight two-way fast-forward.
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test_expect_success '22 - local change cache updated.' '
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rm -f .git/index &&
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read_tree_must_succeed $treeH &&
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git checkout-index -u -f -q -a &&
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sed -e "s/such as/SUCH AS/" bozbar-old >bozbar &&
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git update-index --add bozbar &&
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if read_tree_twoway $treeH $treeM; then false; else :; fi
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'
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# Also make sure we did not break DF vs DF/DF case.
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test_expect_success 'DF vs DF/DF case setup.' '
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rm -f .git/index &&
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echo DF >DF &&
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git update-index --add DF &&
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treeDF=$(git write-tree) &&
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echo treeDF $treeDF &&
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git ls-tree $treeDF &&
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rm -f DF &&
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mkdir DF &&
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echo DF/DF >DF/DF &&
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git update-index --add --remove DF DF/DF &&
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treeDFDF=$(git write-tree) &&
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echo treeDFDF $treeDFDF &&
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git ls-tree $treeDFDF &&
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git ls-files --stage >DFDF.out
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'
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test_expect_success 'DF vs DF/DF case test.' '
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rm -f .git/index &&
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rm -fr DF &&
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echo DF >DF &&
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git update-index --add DF &&
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read_tree_twoway $treeDF $treeDFDF &&
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git ls-files --stage >DFDFcheck.out &&
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test_cmp DFDF.out DFDFcheck.out &&
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check_cache_at DF/DF dirty &&
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:
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'
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test_expect_success 'a/b (untracked) vs a case setup.' '
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rm -f .git/index &&
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: >a &&
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git update-index --add a &&
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treeM=$(git write-tree) &&
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echo treeM $treeM &&
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git ls-tree $treeM &&
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git ls-files --stage >treeM.out &&
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rm -f a &&
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git update-index --remove a &&
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mkdir a &&
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: >a/b &&
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treeH=$(git write-tree) &&
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echo treeH $treeH &&
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git ls-tree $treeH
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'
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test_expect_success 'a/b (untracked) vs a, plus c/d case test.' '
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read_tree_u_must_fail -u -m "$treeH" "$treeM" &&
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git ls-files --stage &&
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test -f a/b
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'
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test_expect_success 'read-tree supports the super-prefix' '
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cat <<-EOF >expect &&
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error: Updating '\''fictional/a'\'' would lose untracked files in it
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EOF
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test_must_fail git read-tree --super-prefix fictional/ -u -m "$treeH" "$treeM" 2>actual &&
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test_cmp expect actual
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'
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test_expect_success 'a/b vs a, plus c/d case setup.' '
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rm -f .git/index &&
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rm -fr a &&
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: >a &&
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mkdir c &&
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: >c/d &&
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git update-index --add a c/d &&
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treeM=$(git write-tree) &&
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echo treeM $treeM &&
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git ls-tree $treeM &&
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git ls-files --stage >treeM.out &&
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rm -f a &&
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mkdir a &&
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: >a/b &&
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git update-index --add --remove a a/b &&
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treeH=$(git write-tree) &&
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echo treeH $treeH &&
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git ls-tree $treeH
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'
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test_expect_success 'a/b vs a, plus c/d case test.' '
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read_tree_u_must_succeed -u -m "$treeH" "$treeM" &&
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git ls-files --stage | tee >treeMcheck.out &&
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test_cmp treeM.out treeMcheck.out
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'
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test_expect_success '-m references the correct modified tree' '
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echo >file-a &&
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echo >file-b &&
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git add file-a file-b &&
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git commit -a -m "test for correct modified tree" &&
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git branch initial-mod &&
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echo b >file-b &&
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git commit -a -m "B" &&
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echo a >file-a &&
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git add file-a &&
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git ls-tree $(git write-tree) file-a >expect &&
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read_tree_must_succeed -m HEAD initial-mod &&
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git ls-tree $(git write-tree) file-a >actual &&
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test_cmp expect actual
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'
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test_done
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