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authorDenton Liu <liu.denton@gmail.com>2020-04-07 14:28:07 (GMT)
committerJunio C Hamano <gitster@pobox.com>2020-04-10 16:28:02 (GMT)
commita03b55530ab844974b7058042a015fcfcd9e7a53 (patch)
treebafe59f6e7bab8e6d37854fc7be2a85f71176425 /t/t7600-merge.sh
parent804fe3155761e73c3dcc4e162ddb3ff560f16cd7 (diff)
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merge: teach --autostash option
In rebase, one can pass the `--autostash` option to cause the worktree to be automatically stashed before continuing with the rebase. This option is missing in merge, however. Implement the `--autostash` option and corresponding `merge.autoStash` option in merge which stashes before merging and then pops after. This option is useful when a developer has some local changes on a topic branch but they realize that their work depends on another branch. Previously, they had to run something like git fetch ... git stash push git merge FETCH_HEAD git stash pop but now, that is reduced to git fetch ... git merge --autostash FETCH_HEAD When an autostash is generated, it is automatically reapplied to the worktree only in three explicit situations: 1. An incomplete merge is commit using `git commit`. 2. A merge completes successfully. 3. A merge is aborted using `git merge --abort`. In all other situations where the merge state is removed using remove_merge_branch_state() such as aborting a merge via `git reset --hard`, the autostash is saved into the stash reflog instead keeping the worktree clean. Helped-by: Phillip Wood <phillip.wood@dunelm.org.uk> Suggested-by: Alban Gruin <alban.gruin@gmail.com> Signed-off-by: Denton Liu <liu.denton@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t7600-merge.sh')
-rwxr-xr-xt/t7600-merge.sh132
1 files changed, 132 insertions, 0 deletions
diff --git a/t/t7600-merge.sh b/t/t7600-merge.sh
index 4fa0ef8..5883a6a 100755
--- a/t/t7600-merge.sh
+++ b/t/t7600-merge.sh
@@ -30,13 +30,17 @@ Testing basic merge operations/option parsing.
. "$TEST_DIRECTORY"/lib-gpg.sh
test_write_lines 1 2 3 4 5 6 7 8 9 >file
+cp file file.orig
test_write_lines '1 X' 2 3 4 5 6 7 8 9 >file.1
+test_write_lines 1 2 '3 X' 4 5 6 7 8 9 >file.3
test_write_lines 1 2 3 4 '5 X' 6 7 8 9 >file.5
test_write_lines 1 2 3 4 5 6 7 8 '9 X' >file.9
test_write_lines 1 2 3 4 5 6 7 8 '9 Y' >file.9y
test_write_lines '1 X' 2 3 4 5 6 7 8 9 >result.1
test_write_lines '1 X' 2 3 4 '5 X' 6 7 8 9 >result.1-5
+test_write_lines '1 X' 2 3 4 5 6 7 8 '9 X' >result.1-9
test_write_lines '1 X' 2 3 4 '5 X' 6 7 8 '9 X' >result.1-5-9
+test_write_lines '1 X' 2 '3 X' 4 '5 X' 6 7 8 '9 X' >result.1-3-5-9
test_write_lines 1 2 3 4 5 6 7 8 '9 Z' >result.9z
create_merge_msgs () {
@@ -675,6 +679,134 @@ test_expect_success 'refresh the index before merging' '
git merge c3
'
+test_expect_success 'merge with --autostash' '
+ git reset --hard c1 &&
+ git merge-file file file.orig file.9 &&
+ git merge --autostash c2 2>err &&
+ test_i18ngrep "Applied autostash." err &&
+ git show HEAD:file >merge-result &&
+ test_cmp result.1-5 merge-result &&
+ test_cmp result.1-5-9 file
+'
+
+test_expect_success 'merge with merge.autoStash' '
+ test_config merge.autoStash true &&
+ git reset --hard c1 &&
+ git merge-file file file.orig file.9 &&
+ git merge c2 2>err &&
+ test_i18ngrep "Applied autostash." err &&
+ git show HEAD:file >merge-result &&
+ test_cmp result.1-5 merge-result &&
+ test_cmp result.1-5-9 file
+'
+
+test_expect_success 'fast-forward merge with --autostash' '
+ git reset --hard c0 &&
+ git merge-file file file.orig file.5 &&
+ git merge --autostash c1 2>err &&
+ test_i18ngrep "Applied autostash." err &&
+ test_cmp result.1-5 file
+'
+
+test_expect_success 'octopus merge with --autostash' '
+ git reset --hard c1 &&
+ git merge-file file file.orig file.3 &&
+ git merge --autostash c2 c3 2>err &&
+ test_i18ngrep "Applied autostash." err &&
+ git show HEAD:file >merge-result &&
+ test_cmp result.1-5-9 merge-result &&
+ test_cmp result.1-3-5-9 file
+'
+
+test_expect_success 'conflicted merge with --autostash, --abort restores stash' '
+ git reset --hard c3 &&
+ cp file.1 file &&
+ test_must_fail git merge --autostash c7 &&
+ git merge --abort 2>err &&
+ test_i18ngrep "Applied autostash." err &&
+ test_cmp file.1 file
+'
+
+test_expect_success 'completed merge (git commit) with --no-commit and --autostash' '
+ git reset --hard c1 &&
+ git merge-file file file.orig file.9 &&
+ git diff >expect &&
+ git merge --no-commit --autostash c2 &&
+ git stash show -p MERGE_AUTOSTASH >actual &&
+ test_cmp expect actual &&
+ git commit 2>err &&
+ test_i18ngrep "Applied autostash." err &&
+ git show HEAD:file >merge-result &&
+ test_cmp result.1-5 merge-result &&
+ test_cmp result.1-5-9 file
+'
+
+test_expect_success 'completed merge (git merge --continue) with --no-commit and --autostash' '
+ git reset --hard c1 &&
+ git merge-file file file.orig file.9 &&
+ git diff >expect &&
+ git merge --no-commit --autostash c2 &&
+ git stash show -p MERGE_AUTOSTASH >actual &&
+ test_cmp expect actual &&
+ git merge --continue 2>err &&
+ test_i18ngrep "Applied autostash." err &&
+ git show HEAD:file >merge-result &&
+ test_cmp result.1-5 merge-result &&
+ test_cmp result.1-5-9 file
+'
+
+test_expect_success 'aborted merge (merge --abort) with --no-commit and --autostash' '
+ git reset --hard c1 &&
+ git merge-file file file.orig file.9 &&
+ git diff >expect &&
+ git merge --no-commit --autostash c2 &&
+ git stash show -p MERGE_AUTOSTASH >actual &&
+ test_cmp expect actual &&
+ git merge --abort 2>err &&
+ test_i18ngrep "Applied autostash." err &&
+ git diff >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'aborted merge (reset --hard) with --no-commit and --autostash' '
+ git reset --hard c1 &&
+ git merge-file file file.orig file.9 &&
+ git diff >expect &&
+ git merge --no-commit --autostash c2 &&
+ git stash show -p MERGE_AUTOSTASH >actual &&
+ test_cmp expect actual &&
+ git reset --hard 2>err &&
+ test_i18ngrep "Autostash exists; creating a new stash entry." err &&
+ git diff --exit-code
+'
+
+test_expect_success 'quit merge with --no-commit and --autostash' '
+ git reset --hard c1 &&
+ git merge-file file file.orig file.9 &&
+ git diff >expect &&
+ git merge --no-commit --autostash c2 &&
+ git stash show -p MERGE_AUTOSTASH >actual &&
+ test_cmp expect actual &&
+ git diff HEAD >expect &&
+ git merge --quit 2>err &&
+ test_i18ngrep "Autostash exists; creating a new stash entry." err &&
+ git diff HEAD >actual &&
+ test_cmp expect actual
+'
+
+test_expect_success 'merge with conflicted --autostash changes' '
+ git reset --hard c1 &&
+ git merge-file file file.orig file.9y &&
+ git diff >expect &&
+ test_when_finished "test_might_fail git stash drop" &&
+ git merge --autostash c3 2>err &&
+ test_i18ngrep "Applying autostash resulted in conflicts." err &&
+ git show HEAD:file >merge-result &&
+ test_cmp result.1-9 merge-result &&
+ git stash show -p >actual &&
+ test_cmp expect actual
+'
+
cat >expected.branch <<\EOF
Merge branch 'c5-branch' (early part)
EOF