diff options
| -rw-r--r-- | builtin/pull.c | 48 | ||||
| -rwxr-xr-x | t/t5572-pull-submodule.sh | 56 |
2 files changed, 90 insertions, 14 deletions
diff --git a/builtin/pull.c b/builtin/pull.c index 1034372f8b..aa56ebcdd0 100644 --- a/builtin/pull.c +++ b/builtin/pull.c @@ -852,21 +852,42 @@ static int get_octopus_merge_base(struct object_id *merge_base, /** * Given the current HEAD oid, the merge head returned from git-fetch and the - * fork point calculated by get_rebase_fork_point(), runs git-rebase with the - * appropriate arguments and returns its exit status. + * fork point calculated by get_rebase_fork_point(), compute the <newbase> and + * <upstream> arguments to use for the upcoming git-rebase invocation. */ -static int run_rebase(const struct object_id *curr_head, +static int get_rebase_newbase_and_upstream(struct object_id *newbase, + struct object_id *upstream, + const struct object_id *curr_head, const struct object_id *merge_head, const struct object_id *fork_point) { - int ret; struct object_id oct_merge_base; - struct strvec args = STRVEC_INIT; if (!get_octopus_merge_base(&oct_merge_base, curr_head, merge_head, fork_point)) if (!is_null_oid(fork_point) && oideq(&oct_merge_base, fork_point)) fork_point = NULL; + if (fork_point && !is_null_oid(fork_point)) + oidcpy(upstream, fork_point); + else + oidcpy(upstream, merge_head); + + oidcpy(newbase, merge_head); + + return 0; +} + +/** + * Given the <newbase> and <upstream> calculated by + * get_rebase_newbase_and_upstream(), runs git-rebase with the + * appropriate arguments and returns its exit status. + */ +static int run_rebase(const struct object_id *newbase, + const struct object_id *upstream) +{ + int ret; + struct strvec args = STRVEC_INIT; + strvec_push(&args, "rebase"); /* Shared options */ @@ -894,12 +915,9 @@ static int run_rebase(const struct object_id *curr_head, warning(_("ignoring --verify-signatures for rebase")); strvec_push(&args, "--onto"); - strvec_push(&args, oid_to_hex(merge_head)); + strvec_push(&args, oid_to_hex(newbase)); - if (fork_point && !is_null_oid(fork_point)) - strvec_push(&args, oid_to_hex(fork_point)); - else - strvec_push(&args, oid_to_hex(merge_head)); + strvec_push(&args, oid_to_hex(upstream)); ret = run_command_v_opt(args.v, RUN_GIT_CMD); strvec_clear(&args); @@ -1011,9 +1029,15 @@ int cmd_pull(int argc, const char **argv, const char *prefix) if (opt_rebase) { int ret = 0; int ran_ff = 0; + + struct object_id newbase; + struct object_id upstream; + get_rebase_newbase_and_upstream(&newbase, &upstream, &curr_head, + merge_heads.oid, &rebase_fork_point); + if ((recurse_submodules == RECURSE_SUBMODULES_ON || recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND) && - submodule_touches_in_range(the_repository, &rebase_fork_point, &curr_head)) + submodule_touches_in_range(the_repository, &upstream, &curr_head)) die(_("cannot rebase with locally recorded submodule modifications")); if (!autostash) { struct commit_list *list = NULL; @@ -1034,7 +1058,7 @@ int cmd_pull(int argc, const char **argv, const char *prefix) free_commit_list(list); } if (!ran_ff) - ret = run_rebase(&curr_head, merge_heads.oid, &rebase_fork_point); + ret = run_rebase(&newbase, &upstream); if (!ret && (recurse_submodules == RECURSE_SUBMODULES_ON || recurse_submodules == RECURSE_SUBMODULES_ON_DEMAND)) diff --git a/t/t5572-pull-submodule.sh b/t/t5572-pull-submodule.sh index 1d75e3b12b..37fd06b0be 100755 --- a/t/t5572-pull-submodule.sh +++ b/t/t5572-pull-submodule.sh @@ -101,7 +101,12 @@ test_expect_success " --[no-]recurse-submodule and submodule.recurse" ' test_path_is_file super/sub/merge_strategy_4.t ' -test_expect_success 'recursive rebasing pull' ' +test_expect_success 'pull --rebase --recurse-submodules (remote superproject submodule changes, local submodule changes)' ' + # This tests the following scenario : + # - local submodule has new commits + # - local superproject does not have new commits + # - upstream superproject has new commits that change the submodule pointer + # change upstream test_commit -C child rebase_strategy && git -C parent submodule update --remote && @@ -116,7 +121,10 @@ test_expect_success 'recursive rebasing pull' ' test_path_is_file super/sub/local_stuff.t ' -test_expect_success 'pull rebase recursing fails with conflicts' ' +test_expect_success 'pull --rebase --recurse-submodules fails if both sides record submodule changes' ' + # This tests the following scenario : + # - local superproject has new commits that change the submodule pointer + # - upstream superproject has new commits that change the submodule pointer # local changes in submodule recorded in superproject: test_commit -C super/sub local_stuff_2 && @@ -136,6 +144,50 @@ test_expect_success 'pull rebase recursing fails with conflicts' ' test_i18ngrep "locally recorded submodule modifications" err ' +test_expect_success 'pull --rebase --recurse-submodules (no submodule changes, no fork-point)' ' + # This tests the following scenario : + # - local submodule does not have new commits + # - local superproject has new commits that *do not* change the submodule pointer + # - upstream superproject has new commits that *do not* change the submodule pointer + # - local superproject branch has no fork-point with its remote-tracking counter-part + + # create upstream superproject + test_create_repo submodule && + test_commit -C submodule first_in_sub && + + test_create_repo superprojet && + test_commit -C superprojet first_in_super && + git -C superprojet submodule add ../submodule && + git -C superprojet commit -m "add submodule" && + test_commit -C superprojet third_in_super && + + # clone superproject + git clone --recurse-submodules superprojet superclone && + + # add commits upstream + test_commit -C superprojet fourth_in_super && + + # create topic branch in clone, not based on any remote-tracking branch + git -C superclone checkout -b feat HEAD~1 && + test_commit -C superclone first_on_feat && + git -C superclone pull --rebase --recurse-submodules origin master +' + +# NOTE: +# +# This test is particular because there is only a single commit in the upstream superproject +# 'parent' (which adds the submodule 'a-submodule'). The clone of the superproject +# ('child') hard-resets its branch to a new root commit with the same tree as the one +# from the upstream superproject, so that its branch has no merge-base with its +# remote-tracking counterpart, and then calls 'git pull --recurse-submodules --rebase'. +# The result is that the local branch is reset to the remote-tracking branch (as it was +# originally before the hard-reset). + +# The only commit in the range generated by 'submodule.c::submodule_touches_in_range' and +# passed to 'submodule.c::collect_changed_submodules' is the new (regenerated) initial commit, +# which adds the submodule. +# However, 'submodule_touches_in_range' does not error (even though this commit adds the submodule) +# because 'combine-diff.c::diff_tree_combined' returns early, as the initial commit has no parents. test_expect_success 'branch has no merge base with remote-tracking counterpart' ' rm -rf parent child && |