#!/bin/sh test_description='checkout ' . ./test-lib.sh # Arguments: <branch> <sha> [<checkout options>] # # Runs "git checkout" to switch to <branch>, testing that # # 1) we are on the specified branch, <branch>; # 2) HEAD is <sha>; if <sha> is not specified, the old HEAD is used. # # If <checkout options> is not specified, "git checkout" is run with -b. do_checkout() { exp_branch=$1 && exp_ref="refs/heads/$exp_branch" && # if <sha> is not specified, use HEAD. exp_sha=${2:-$(git rev-parse --verify HEAD)} && # default options for git checkout: -b if [ -z "$3" ]; then opts="-b" else opts="$3" fi git checkout $opts $exp_branch $exp_sha && test $exp_ref = $(git rev-parse --symbolic-full-name HEAD) && test $exp_sha = $(git rev-parse --verify HEAD) } test_dirty_unmergeable() { ! git diff --exit-code >/dev/null } setup_dirty_unmergeable() { echo >>file1 change2 } test_dirty_mergeable() { ! git diff --cached --exit-code >/dev/null } setup_dirty_mergeable() { echo >file2 file2 && git add file2 } test_expect_success 'setup' ' test_commit initial file1 && HEAD1=$(git rev-parse --verify HEAD) && test_commit change1 file1 && HEAD2=$(git rev-parse --verify HEAD) && git branch -m branch1 ' test_expect_success 'checkout -b to a new branch, set to HEAD' ' do_checkout branch2 ' test_expect_success 'checkout -b to a new branch, set to an explicit ref' ' git checkout branch1 && git branch -D branch2 && do_checkout branch2 $HEAD1 ' test_expect_success 'checkout -b to a new branch with unmergeable changes fails' ' git checkout branch1 && # clean up from previous test git branch -D branch2 && setup_dirty_unmergeable && test_must_fail do_checkout branch2 $HEAD1 && test_dirty_unmergeable ' test_expect_success 'checkout -f -b to a new branch with unmergeable changes discards changes' ' # still dirty and on branch1 do_checkout branch2 $HEAD1 "-f -b" && test_must_fail test_dirty_unmergeable ' test_expect_success 'checkout -b to a new branch preserves mergeable changes' ' git checkout branch1 && # clean up from previous test git branch -D branch2 && setup_dirty_mergeable && do_checkout branch2 $HEAD1 && test_dirty_mergeable ' test_expect_success 'checkout -f -b to a new branch with mergeable changes discards changes' ' # clean up from previous test git reset --hard && git checkout branch1 && # clean up from previous test git branch -D branch2 && setup_dirty_mergeable && do_checkout branch2 $HEAD1 "-f -b" && test_must_fail test_dirty_mergeable ' test_expect_success 'checkout -b to an existing branch fails' ' git reset --hard HEAD && test_must_fail do_checkout branch2 $HEAD2 ' test_expect_success 'checkout -b to @{-1} fails with the right branch name' ' git reset --hard HEAD && git checkout branch1 && git checkout branch2 && echo >expect "fatal: A branch named '\''branch1'\'' already exists." && test_must_fail git checkout -b @{-1} 2>actual && test_cmp expect actual ' test_expect_success 'checkout -B to an existing branch resets branch to HEAD' ' git checkout branch1 && do_checkout branch2 "" -B ' test_expect_success 'checkout -B to an existing branch from detached HEAD resets branch to HEAD' ' git checkout $(git rev-parse --verify HEAD) && do_checkout branch2 "" -B ' test_expect_success 'checkout -B to an existing branch with an explicit ref resets branch to that ref' ' git checkout branch1 && do_checkout branch2 $HEAD1 -B ' test_expect_success 'checkout -B to an existing branch with unmergeable changes fails' ' git checkout branch1 && setup_dirty_unmergeable && test_must_fail do_checkout branch2 $HEAD1 -B && test_dirty_unmergeable ' test_expect_success 'checkout -f -B to an existing branch with unmergeable changes discards changes' ' # still dirty and on branch1 do_checkout branch2 $HEAD1 "-f -B" && test_must_fail test_dirty_unmergeable ' test_expect_success 'checkout -B to an existing branch preserves mergeable changes' ' git checkout branch1 && setup_dirty_mergeable && do_checkout branch2 $HEAD1 -B && test_dirty_mergeable ' test_expect_success 'checkout -f -B to an existing branch with mergeable changes discards changes' ' # clean up from previous test git reset --hard && git checkout branch1 && setup_dirty_mergeable && do_checkout branch2 $HEAD1 "-f -B" && test_must_fail test_dirty_mergeable ' test_expect_success 'checkout -b <describe>' ' git tag -f -m "First commit" initial initial && git checkout -f change1 && name=$(git describe) && git checkout -b $name && git diff --exit-code change1 && echo "refs/heads/$name" >expect && git symbolic-ref HEAD >actual && test_cmp expect actual ' test_expect_success 'checkout -B to the current branch works' ' git checkout branch1 && git checkout -B branch1-scratch && setup_dirty_mergeable && git checkout -B branch1-scratch initial && test_dirty_mergeable ' test_done