git-commit-vandalism/t/t2024-checkout-dwim.sh
Matthieu Moy a047fafc78 checkout: allow dwim for branch creation for "git checkout $branch --"
The "--" notation disambiguates files and branches, but as a side-effect
of the previous implementation, also disabled the branch auto-creation
when $branch does not exist.

A possible scenario is then:

git checkout $branch
=> fails if $branch is both a ref and a file, and suggests --

git checkout $branch --
=> refuses to create the $branch

This patch allows the second form to create $branch, and since the -- is
provided, it does not look for file named $branch.

Signed-off-by: Matthieu Moy <Matthieu.Moy@imag.fr>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
2013-10-18 12:56:06 -07:00

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#!/bin/sh
test_description='checkout <branch>
Ensures that checkout on an unborn branch does what the user expects'
. ./test-lib.sh
# Is the current branch "refs/heads/$1"?
test_branch () {
printf "%s\n" "refs/heads/$1" >expect.HEAD &&
git symbolic-ref HEAD >actual.HEAD &&
test_cmp expect.HEAD actual.HEAD
}
# Is branch "refs/heads/$1" set to pull from "$2/$3"?
test_branch_upstream () {
printf "%s\n" "$2" "refs/heads/$3" >expect.upstream &&
{
git config "branch.$1.remote" &&
git config "branch.$1.merge"
} >actual.upstream &&
test_cmp expect.upstream actual.upstream
}
test_expect_success 'setup' '
test_commit my_master &&
git init repo_a &&
(
cd repo_a &&
test_commit a_master &&
git checkout -b foo &&
test_commit a_foo &&
git checkout -b bar &&
test_commit a_bar
) &&
git init repo_b &&
(
cd repo_b &&
test_commit b_master &&
git checkout -b foo &&
test_commit b_foo &&
git checkout -b baz &&
test_commit b_baz
) &&
git remote add repo_a repo_a &&
git remote add repo_b repo_b &&
git config remote.repo_b.fetch \
"+refs/heads/*:refs/remotes/other_b/*" &&
git fetch --all
'
test_expect_success 'checkout of non-existing branch fails' '
git checkout -B master &&
test_might_fail git branch -D xyzzy &&
test_must_fail git checkout xyzzy &&
test_must_fail git rev-parse --verify refs/heads/xyzzy &&
test_branch master
'
test_expect_success 'checkout of branch from multiple remotes fails #1' '
git checkout -B master &&
test_might_fail git branch -D foo &&
test_must_fail git checkout foo &&
test_must_fail git rev-parse --verify refs/heads/foo &&
test_branch master
'
test_expect_success 'checkout of branch from a single remote succeeds #1' '
git checkout -B master &&
test_might_fail git branch -D bar &&
git checkout bar &&
test_branch bar &&
test_cmp_rev remotes/repo_a/bar HEAD &&
test_branch_upstream bar repo_a bar
'
test_expect_success 'checkout of branch from a single remote succeeds #2' '
git checkout -B master &&
test_might_fail git branch -D baz &&
git checkout baz &&
test_branch baz &&
test_cmp_rev remotes/other_b/baz HEAD &&
test_branch_upstream baz repo_b baz
'
test_expect_success '--no-guess suppresses branch auto-vivification' '
git checkout -B master &&
test_might_fail git branch -D bar &&
test_must_fail git checkout --no-guess bar &&
test_must_fail git rev-parse --verify refs/heads/bar &&
test_branch master
'
test_expect_success 'setup more remotes with unconventional refspecs' '
git checkout -B master &&
git init repo_c &&
(
cd repo_c &&
test_commit c_master &&
git checkout -b bar &&
test_commit c_bar
git checkout -b spam &&
test_commit c_spam
) &&
git init repo_d &&
(
cd repo_d &&
test_commit d_master &&
git checkout -b baz &&
test_commit f_baz
git checkout -b eggs &&
test_commit c_eggs
) &&
git remote add repo_c repo_c &&
git config remote.repo_c.fetch \
"+refs/heads/*:refs/remotes/extra_dir/repo_c/extra_dir/*" &&
git remote add repo_d repo_d &&
git config remote.repo_d.fetch \
"+refs/heads/*:refs/repo_d/*" &&
git fetch --all
'
test_expect_success 'checkout of branch from multiple remotes fails #2' '
git checkout -B master &&
test_might_fail git branch -D bar &&
test_must_fail git checkout bar &&
test_must_fail git rev-parse --verify refs/heads/bar &&
test_branch master
'
test_expect_success 'checkout of branch from multiple remotes fails #3' '
git checkout -B master &&
test_might_fail git branch -D baz &&
test_must_fail git checkout baz &&
test_must_fail git rev-parse --verify refs/heads/baz &&
test_branch master
'
test_expect_success 'checkout of branch from a single remote succeeds #3' '
git checkout -B master &&
test_might_fail git branch -D spam &&
git checkout spam &&
test_branch spam &&
test_cmp_rev refs/remotes/extra_dir/repo_c/extra_dir/spam HEAD &&
test_branch_upstream spam repo_c spam
'
test_expect_success 'checkout of branch from a single remote succeeds #4' '
git checkout -B master &&
test_might_fail git branch -D eggs &&
git checkout eggs &&
test_branch eggs &&
test_cmp_rev refs/repo_d/eggs HEAD &&
test_branch_upstream eggs repo_d eggs
'
test_expect_success 'checkout of branch with a file having the same name fails' '
git checkout -B master &&
test_might_fail git branch -D spam &&
>spam &&
test_must_fail git checkout spam &&
test_must_fail git rev-parse --verify refs/heads/spam &&
test_branch master
'
test_expect_success 'checkout <branch> -- succeeds, even if a file with the same name exists' '
git checkout -B master &&
test_might_fail git branch -D spam &&
>spam &&
git checkout spam -- &&
test_branch spam &&
test_cmp_rev refs/remotes/extra_dir/repo_c/extra_dir/spam HEAD &&
test_branch_upstream spam repo_c spam
'
test_done