cc70148385
Ensure that strcmp() isn't called when head is null. Previously we were getting segfaults when checkout -B was done from a detached HEAD. Signed-off-by: Tay Ray Chuan <rctay89@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
173 lines
4.0 KiB
Bash
Executable File
173 lines
4.0 KiB
Bash
Executable File
#!/bin/sh
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test_description='checkout '
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. ./test-lib.sh
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# Arguments: <branch> <sha> [<checkout options>]
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#
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# Runs "git checkout" to switch to <branch>, testing that
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#
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# 1) we are on the specified branch, <branch>;
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# 2) HEAD is <sha>; if <sha> is not specified, the old HEAD is used.
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#
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# If <checkout options> is not specified, "git checkout" is run with -b.
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do_checkout() {
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exp_branch=$1 &&
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exp_ref="refs/heads/$exp_branch" &&
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# if <sha> is not specified, use HEAD.
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exp_sha=${2:-$(git rev-parse --verify HEAD)} &&
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# default options for git checkout: -b
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if [ -z "$3" ]; then
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opts="-b"
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else
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opts="$3"
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fi
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git checkout $opts $exp_branch $exp_sha &&
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test $exp_ref = $(git rev-parse --symbolic-full-name HEAD) &&
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test $exp_sha = $(git rev-parse --verify HEAD)
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}
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test_dirty_unmergeable() {
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! git diff --exit-code >/dev/null
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}
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setup_dirty_unmergeable() {
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echo >>file1 change2
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}
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test_dirty_mergeable() {
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! git diff --cached --exit-code >/dev/null
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}
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setup_dirty_mergeable() {
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echo >file2 file2 &&
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git add file2
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}
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test_expect_success 'setup' '
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test_commit initial file1 &&
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HEAD1=$(git rev-parse --verify HEAD) &&
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test_commit change1 file1 &&
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HEAD2=$(git rev-parse --verify HEAD) &&
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git branch -m branch1
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'
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test_expect_success 'checkout -b to a new branch, set to HEAD' '
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do_checkout branch2
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'
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test_expect_success 'checkout -b to a new branch, set to an explicit ref' '
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git checkout branch1 &&
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git branch -D branch2 &&
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do_checkout branch2 $HEAD1
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'
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test_expect_success 'checkout -b to a new branch with unmergeable changes fails' '
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git checkout branch1 &&
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# clean up from previous test
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git branch -D branch2 &&
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setup_dirty_unmergeable &&
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test_must_fail do_checkout branch2 $HEAD1 &&
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test_dirty_unmergeable
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'
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test_expect_success 'checkout -f -b to a new branch with unmergeable changes discards changes' '
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# still dirty and on branch1
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do_checkout branch2 $HEAD1 "-f -b" &&
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test_must_fail test_dirty_unmergeable
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'
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test_expect_success 'checkout -b to a new branch preserves mergeable changes' '
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git checkout branch1 &&
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# clean up from previous test
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git branch -D branch2 &&
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setup_dirty_mergeable &&
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do_checkout branch2 $HEAD1 &&
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test_dirty_mergeable
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'
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test_expect_success 'checkout -f -b to a new branch with mergeable changes discards changes' '
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# clean up from previous test
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git reset --hard &&
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git checkout branch1 &&
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# clean up from previous test
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git branch -D branch2 &&
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setup_dirty_mergeable &&
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do_checkout branch2 $HEAD1 "-f -b" &&
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test_must_fail test_dirty_mergeable
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'
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test_expect_success 'checkout -b to an existing branch fails' '
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git reset --hard HEAD &&
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test_must_fail do_checkout branch2 $HEAD2
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'
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test_expect_success 'checkout -B to an existing branch resets branch to HEAD' '
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git checkout branch1 &&
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do_checkout branch2 "" -B
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'
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test_expect_success 'checkout -B to an existing branch from detached HEAD resets branch to HEAD' '
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git checkout $(git rev-parse --verify HEAD) &&
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do_checkout branch2 "" -B
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'
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test_expect_success 'checkout -B to an existing branch with an explicit ref resets branch to that ref' '
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git checkout branch1 &&
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do_checkout branch2 $HEAD1 -B
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'
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test_expect_success 'checkout -B to an existing branch with unmergeable changes fails' '
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git checkout branch1 &&
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setup_dirty_unmergeable &&
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test_must_fail do_checkout branch2 $HEAD1 -B &&
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test_dirty_unmergeable
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'
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test_expect_success 'checkout -f -B to an existing branch with unmergeable changes discards changes' '
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# still dirty and on branch1
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do_checkout branch2 $HEAD1 "-f -B" &&
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test_must_fail test_dirty_unmergeable
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'
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test_expect_success 'checkout -B to an existing branch preserves mergeable changes' '
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git checkout branch1 &&
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setup_dirty_mergeable &&
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do_checkout branch2 $HEAD1 -B &&
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test_dirty_mergeable
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'
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test_expect_success 'checkout -f -B to an existing branch with mergeable changes discards changes' '
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# clean up from previous test
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git reset --hard &&
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git checkout branch1 &&
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setup_dirty_mergeable &&
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do_checkout branch2 $HEAD1 "-f -B" &&
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test_must_fail test_dirty_mergeable
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'
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test_done
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