tvl-depot/third_party/git/t/t2024-checkout-dwim.sh
Vincent Ambo f4609b896f merge(3p/git): Merge git subtree at v2.29.2
This also bumps the stable nixpkgs to 20.09 as of 2020-11-21, because
there is some breakage in the git build related to the netrc
credentials helper which someone has taken care of in nixpkgs.

The stable channel is not used for anything other than git, so this
should be fine.

Change-Id: I3575a19dab09e1e9556cf8231d717de9890484fb
2020-11-21 19:45:56 +01:00

336 lines
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Executable file

#!/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
}
status_uno_is_clean () {
git status -uno --porcelain >status.actual &&
test_must_be_empty status.actual
}
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 checkout -b ambiguous_branch_and_file &&
test_commit a_ambiguous_branch_and_file
) &&
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 checkout -b ambiguous_branch_and_file &&
test_commit b_ambiguous_branch_and_file
) &&
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 &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
test_must_fail git rev-parse --verify refs/heads/foo &&
test_branch master
'
test_expect_success 'when arg matches multiple remotes, do not fallback to interpreting as pathspec' '
# create a file with name matching remote branch name
git checkout -b t_ambiguous_branch_and_file &&
>ambiguous_branch_and_file &&
git add ambiguous_branch_and_file &&
git commit -m "ambiguous_branch_and_file" &&
# modify file to verify that it will not be touched by checkout
test_when_finished "git checkout -- ambiguous_branch_and_file" &&
echo "file contents" >ambiguous_branch_and_file &&
cp ambiguous_branch_and_file expect &&
test_must_fail git checkout ambiguous_branch_and_file 2>err &&
test_i18ngrep "matched multiple (2) remote tracking branches" err &&
# file must not be altered
test_cmp expect ambiguous_branch_and_file
'
test_expect_success 'checkout of branch from multiple remotes fails with advice' '
git checkout -B master &&
test_might_fail git branch -D foo &&
test_must_fail git checkout foo 2>stderr &&
test_branch master &&
status_uno_is_clean &&
test_i18ngrep "^hint: " stderr &&
test_must_fail git -c advice.checkoutAmbiguousRemoteBranchName=false \
checkout foo 2>stderr &&
test_branch master &&
status_uno_is_clean &&
test_i18ngrep ! "^hint: " stderr
'
test_expect_success PERL 'checkout -p with multiple remotes does not print advice' '
git checkout -B master &&
test_might_fail git branch -D foo &&
git checkout -p foo 2>stderr &&
test_i18ngrep ! "^hint: " stderr &&
status_uno_is_clean
'
test_expect_success 'checkout of branch from multiple remotes succeeds with checkout.defaultRemote #1' '
git checkout -B master &&
status_uno_is_clean &&
test_might_fail git branch -D foo &&
git -c checkout.defaultRemote=repo_a checkout foo &&
status_uno_is_clean &&
test_branch foo &&
test_cmp_rev remotes/repo_a/foo HEAD &&
test_branch_upstream foo repo_a foo
'
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 &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
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 d_baz &&
git checkout -b eggs &&
test_commit d_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 &&
status_uno_is_clean &&
test_might_fail git branch -D bar &&
test_must_fail git checkout bar &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
test_might_fail git branch -D baz &&
test_must_fail git checkout baz &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
test_might_fail git branch -D spam &&
git checkout spam &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
test_might_fail git branch -D eggs &&
git checkout eggs &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
test_might_fail git branch -D spam &&
>spam &&
test_must_fail git checkout spam &&
status_uno_is_clean &&
test_must_fail git rev-parse --verify refs/heads/spam &&
test_branch master
'
test_expect_success 'checkout of branch with a file in subdir having the same name fails' '
git checkout -B master &&
status_uno_is_clean &&
test_might_fail git branch -D spam &&
>spam &&
mkdir sub &&
mv spam sub/spam &&
test_must_fail git -C sub checkout spam &&
status_uno_is_clean &&
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 &&
status_uno_is_clean &&
test_might_fail git branch -D spam &&
>spam &&
git checkout spam -- &&
status_uno_is_clean &&
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 'loosely defined local base branch is reported correctly' '
git checkout master &&
status_uno_is_clean &&
git branch strict &&
git branch loose &&
git commit --allow-empty -m "a bit more" &&
test_config branch.strict.remote . &&
test_config branch.loose.remote . &&
test_config branch.strict.merge refs/heads/master &&
test_config branch.loose.merge master &&
git checkout strict | sed -e "s/strict/BRANCHNAME/g" >expect &&
status_uno_is_clean &&
git checkout loose | sed -e "s/loose/BRANCHNAME/g" >actual &&
status_uno_is_clean &&
test_cmp expect actual
'
test_expect_success 'reject when arg could be part of dwim branch' '
git remote add foo file://non-existent-place &&
git update-ref refs/remotes/foo/dwim-arg HEAD &&
echo foo >dwim-arg &&
git add dwim-arg &&
echo bar >dwim-arg &&
test_must_fail git checkout dwim-arg &&
test_must_fail git rev-parse refs/heads/dwim-arg -- &&
grep bar dwim-arg
'
test_expect_success 'disambiguate dwim branch and checkout path (1)' '
git update-ref refs/remotes/foo/dwim-arg1 HEAD &&
echo foo >dwim-arg1 &&
git add dwim-arg1 &&
echo bar >dwim-arg1 &&
git checkout -- dwim-arg1 &&
test_must_fail git rev-parse refs/heads/dwim-arg1 -- &&
grep foo dwim-arg1
'
test_expect_success 'disambiguate dwim branch and checkout path (2)' '
git update-ref refs/remotes/foo/dwim-arg2 HEAD &&
echo foo >dwim-arg2 &&
git add dwim-arg2 &&
echo bar >dwim-arg2 &&
git checkout dwim-arg2 -- &&
git rev-parse refs/heads/dwim-arg2 -- &&
grep bar dwim-arg2
'
test_done