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8ced1aa08f
abe199808c (git checkout -b: allow switching out of an unborn branch)
introduced a bug demonstrated by
git checkout --orphan foo
git checkout --detach
git symbolic-ref HEAD
which gives 'refs/heads/(null)'.
This happens because we strbuf_addf(&branch_ref, "refs/heads/%s",
opts->new_branch) when opts->new_branch can be NULL for --detach.
Catch and forbid this case, adding a test to t2017 to catch it in
future.
Signed-off-by: Chris Webb <chris@arachsys.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
125 lines
3.6 KiB
Bash
Executable file
125 lines
3.6 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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. ./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" = "$(git symbolic-ref HEAD)" &&
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test_tick &&
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git commit -m "Third Commit" &&
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test_must_fail git rev-parse --verify HEAD^ &&
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git diff-tree --quiet master alpha
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'
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test_expect_success '--orphan creates a new orphan branch from <start_point>' '
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git checkout master &&
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git checkout --orphan beta master^ &&
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test_must_fail git rev-parse --verify HEAD &&
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test "refs/heads/beta" = "$(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 master^ beta
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'
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test_expect_success '--orphan must be rejected with -b' '
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git checkout master &&
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test_must_fail git checkout --orphan new -b newer &&
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test refs/heads/master = "$(git symbolic-ref HEAD)"
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'
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test_expect_success '--orphan must be rejected with -t' '
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git checkout master &&
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test_must_fail git checkout --orphan new -t master &&
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test refs/heads/master = "$(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 master &&
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git config branch.autosetupmerge always &&
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git checkout --orphan gamma &&
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test -z "$(git config branch.gamma.merge)" &&
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test refs/heads/gamma = "$(git symbolic-ref HEAD)" &&
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test_must_fail git rev-parse --verify HEAD^
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'
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test_expect_success '--orphan makes reflog by default' '
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git checkout master &&
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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 '--orphan does not make reflog when core.logAllRefUpdates = false' '
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git checkout master &&
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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 master &&
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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 master &&
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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 master &&
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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 master &&
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test_must_fail git checkout --orphan master &&
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test refs/heads/master = "$(git symbolic-ref HEAD)"
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'
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test_expect_success '--orphan refuses to switch if a merge is needed' '
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git checkout master &&
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git reset --hard &&
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echo local >>"$TEST_FILE" &&
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cat "$TEST_FILE" >"$TEST_FILE.saved" &&
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test_must_fail git checkout --orphan new master^ &&
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test refs/heads/master = "$(git symbolic-ref HEAD)" &&
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test_cmp "$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 master &&
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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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