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d3115660b4
It can be helpful when creating a new branch to use the existing
tracking configuration from the branch point. However, there is
currently not a method to automatically do so.
Teach git-{branch,checkout,switch} an "inherit" argument to the
"--track" option. When this is set, creating a new branch will cause the
tracking configuration to default to the configuration of the branch
point, if set.
For example, if branch "main" tracks "origin/main", and we run
`git checkout --track=inherit -b feature main`, then branch "feature"
will track "origin/main". Thus, `git status` will show us how far
ahead/behind we are from origin, and `git pull` will pull from origin.
This is particularly useful when creating branches across many
submodules, such as with `git submodule foreach ...` (or if running with
a patch such as [1], which we use at $job), as it avoids having to
manually set tracking info for each submodule.
Since we've added an argument to "--track", also add "--track=direct" as
another way to explicitly get the original "--track" behavior ("--track"
without an argument still works as well).
Finally, teach branch.autoSetupMerge a new "inherit" option. When this
is set, "--track=inherit" becomes the default behavior.
[1]: https://lore.kernel.org/git/20180927221603.148025-1-sbeller@google.com/
Signed-off-by: Josh Steadmon <steadmon@google.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
138 lines
4 KiB
Bash
Executable file
138 lines
4 KiB
Bash
Executable file
#!/bin/sh
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#
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# Copyright (c) 2010 Erick Mattos
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#
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test_description='git checkout --orphan
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Main Tests for --orphan functionality.'
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GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
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export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME
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. ./test-lib.sh
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TEST_FILE=foo
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test_expect_success 'Setup' '
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echo "Initial" >"$TEST_FILE" &&
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git add "$TEST_FILE" &&
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git commit -m "First Commit" &&
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test_tick &&
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echo "State 1" >>"$TEST_FILE" &&
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git add "$TEST_FILE" &&
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test_tick &&
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git commit -m "Second Commit"
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'
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test_expect_success '--orphan creates a new orphan branch from HEAD' '
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git checkout --orphan alpha &&
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test_must_fail git rev-parse --verify HEAD &&
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test "refs/heads/alpha" = "$(git symbolic-ref HEAD)" &&
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test_tick &&
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git commit -m "Third Commit" &&
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test_must_fail git rev-parse --verify HEAD^ &&
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git diff-tree --quiet main alpha
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'
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test_expect_success '--orphan creates a new orphan branch from <start_point>' '
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git checkout main &&
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git checkout --orphan beta main^ &&
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test_must_fail git rev-parse --verify HEAD &&
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test "refs/heads/beta" = "$(git symbolic-ref HEAD)" &&
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test_tick &&
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git commit -m "Fourth Commit" &&
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test_must_fail git rev-parse --verify HEAD^ &&
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git diff-tree --quiet main^ beta
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'
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test_expect_success '--orphan must be rejected with -b' '
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git checkout main &&
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test_must_fail git checkout --orphan new -b newer &&
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test refs/heads/main = "$(git symbolic-ref HEAD)"
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'
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test_expect_success '--orphan must be rejected with -t' '
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git checkout main &&
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test_must_fail git checkout --orphan new -t main &&
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test refs/heads/main = "$(git symbolic-ref HEAD)"
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'
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test_expect_success '--orphan ignores branch.autosetupmerge' '
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git checkout main &&
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git config branch.autosetupmerge always &&
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git checkout --orphan gamma &&
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test_cmp_config "" --default "" branch.gamma.merge &&
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test refs/heads/gamma = "$(git symbolic-ref HEAD)" &&
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test_must_fail git rev-parse --verify HEAD^ &&
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git checkout main &&
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git config branch.autosetupmerge inherit &&
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git checkout --orphan eta &&
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test_cmp_config "" --default "" branch.eta.merge &&
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test_cmp_config "" --default "" branch.eta.remote &&
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echo refs/heads/eta >expected &&
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git symbolic-ref HEAD >actual &&
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test_cmp expected actual &&
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test_must_fail git rev-parse --verify HEAD^
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'
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test_expect_success '--orphan makes reflog by default' '
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git checkout main &&
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git config --unset core.logAllRefUpdates &&
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git checkout --orphan delta &&
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test_must_fail git rev-parse --verify delta@{0} &&
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git commit -m Delta &&
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git rev-parse --verify delta@{0}
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'
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test_expect_success REFFILES '--orphan does not make reflog when core.logAllRefUpdates = false' '
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git checkout main &&
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git config core.logAllRefUpdates false &&
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git checkout --orphan epsilon &&
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test_must_fail git rev-parse --verify epsilon@{0} &&
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git commit -m Epsilon &&
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test_must_fail git rev-parse --verify epsilon@{0}
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'
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test_expect_success '--orphan with -l makes reflog when core.logAllRefUpdates = false' '
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git checkout main &&
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git checkout -l --orphan zeta &&
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test_must_fail git rev-parse --verify zeta@{0} &&
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git commit -m Zeta &&
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git rev-parse --verify zeta@{0}
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'
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test_expect_success 'giving up --orphan not committed when -l and core.logAllRefUpdates = false deletes reflog' '
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git checkout main &&
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git checkout -l --orphan eta &&
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test_must_fail git rev-parse --verify eta@{0} &&
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git checkout main &&
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test_must_fail git rev-parse --verify eta@{0}
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'
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test_expect_success '--orphan is rejected with an existing name' '
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git checkout main &&
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test_must_fail git checkout --orphan main &&
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test refs/heads/main = "$(git symbolic-ref HEAD)"
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'
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test_expect_success '--orphan refuses to switch if a merge is needed' '
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git checkout main &&
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git reset --hard &&
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echo local >>"$TEST_FILE" &&
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cat "$TEST_FILE" >"$TEST_FILE.saved" &&
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test_must_fail git checkout --orphan new main^ &&
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test refs/heads/main = "$(git symbolic-ref HEAD)" &&
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test_cmp "$TEST_FILE" "$TEST_FILE.saved" &&
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git diff-index --quiet --cached HEAD &&
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git reset --hard
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'
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test_expect_success 'cannot --detach on an unborn branch' '
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git checkout main &&
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git checkout --orphan new &&
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test_must_fail git checkout --detach
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'
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test_done
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