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#!/bin/sh
#
# Copyright (c) 2010 Erick Mattos
#
test_description='git checkout --orphan
Main Tests for --orphan functionality.'
. ./test-lib.sh
TEST_FILE=foo
test_expect_success 'Setup' '
echo "Initial" >"$TEST_FILE" &&
git add "$TEST_FILE" &&
git commit -m "First Commit" &&
test_tick &&
echo "State 1" >>"$TEST_FILE" &&
git add "$TEST_FILE" &&
test_tick &&
git commit -m "Second Commit"
'
test_expect_success '--orphan creates a new orphan branch from HEAD' '
git checkout --orphan alpha &&
test_must_fail git rev-parse --verify HEAD &&
test "refs/heads/alpha" = "$(git symbolic-ref HEAD)" &&
test_tick &&
git commit -m "Third Commit" &&
test_must_fail git rev-parse --verify HEAD^ &&
git diff-tree --quiet master alpha
'
test_expect_success '--orphan creates a new orphan branch from <start_point>' '
git checkout master &&
git checkout --orphan beta master^ &&
test_must_fail git rev-parse --verify HEAD &&
test "refs/heads/beta" = "$(git symbolic-ref HEAD)" &&
test_tick &&
git commit -m "Fourth Commit" &&
test_must_fail git rev-parse --verify HEAD^ &&
git diff-tree --quiet master^ beta
'
test_expect_success '--orphan must be rejected with -b' '
git checkout master &&
test_must_fail git checkout --orphan new -b newer &&
test refs/heads/master = "$(git symbolic-ref HEAD)"
'
test_expect_success '--orphan must be rejected with -t' '
git checkout master &&
test_must_fail git checkout --orphan new -t master &&
test refs/heads/master = "$(git symbolic-ref HEAD)"
'
test_expect_success '--orphan ignores branch.autosetupmerge' '
git checkout master &&
git config branch.autosetupmerge always &&
git checkout --orphan gamma &&
test -z "$(git config branch.gamma.merge)" &&
test refs/heads/gamma = "$(git symbolic-ref HEAD)" &&
test_must_fail git rev-parse --verify HEAD^
'
test_expect_success '--orphan makes reflog by default' '
git checkout master &&
git config --unset core.logAllRefUpdates &&
git checkout --orphan delta &&
test_must_fail git rev-parse --verify delta@{0} &&
git commit -m Delta &&
git rev-parse --verify delta@{0}
'
test_expect_success '--orphan does not make reflog when core.logAllRefUpdates = false' '
git checkout master &&
git config core.logAllRefUpdates false &&
git checkout --orphan epsilon &&
test_must_fail git rev-parse --verify epsilon@{0} &&
git commit -m Epsilon &&
test_must_fail git rev-parse --verify epsilon@{0}
'
test_expect_success '--orphan with -l makes reflog when core.logAllRefUpdates = false' '
git checkout master &&
git checkout -l --orphan zeta &&
test_must_fail git rev-parse --verify zeta@{0} &&
git commit -m Zeta &&
git rev-parse --verify zeta@{0}
'
test_expect_success 'giving up --orphan not committed when -l and core.logAllRefUpdates = false deletes reflog' '
git checkout master &&
git checkout -l --orphan eta &&
test_must_fail git rev-parse --verify eta@{0} &&
git checkout master &&
test_must_fail git rev-parse --verify eta@{0}
'
test_expect_success '--orphan is rejected with an existing name' '
git checkout master &&
test_must_fail git checkout --orphan master &&
test refs/heads/master = "$(git symbolic-ref HEAD)"
'
test_expect_success '--orphan refuses to switch if a merge is needed' '
git checkout master &&
git reset --hard &&
echo local >>"$TEST_FILE" &&
cat "$TEST_FILE" >"$TEST_FILE.saved" &&
test_must_fail git checkout --orphan new master^ &&
test refs/heads/master = "$(git symbolic-ref HEAD)" &&
test_cmp "$TEST_FILE" "$TEST_FILE.saved" &&
git diff-index --quiet --cached HEAD &&
git reset --hard
'
test_expect_success 'cannot --detach on an unborn branch' '
git checkout master &&
git checkout --orphan new &&
test_must_fail git checkout --detach
'
test_done
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