From 16ab794b8257dd08906994d5cccacfa3886aa543 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Sun, 24 May 2020 09:22:51 +0200 Subject: [PATCH 1/2] checkout: add tests for -b and --track MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Test git checkout -b with and without --track and demonstrate unexpected error messages when it's given an extra (i.e. unsupported) path argument. In both cases it reports: $ git checkout -b foo origin/master bar fatal: 'bar' is not a commit and a branch 'foo' cannot be created from it The problem is that the start point we gave for the new branch is "origin/master" and "bar" is just some extra argument -- it could even be a valid commit, which would make the message even more confusing. We have more fitting error messages in git commit, but get confused; use the text of the rights ones in the tests. Reported-by: Dana Dahlstrom Original-test-by: Jeff King Signed-off-by: René Scharfe Signed-off-by: Junio C Hamano --- t/t2018-checkout-branch.sh | 10 ++++++++++ t/t2027-checkout-track.sh | 24 ++++++++++++++++++++++++ 2 files changed, 34 insertions(+) create mode 100755 t/t2027-checkout-track.sh diff --git a/t/t2018-checkout-branch.sh b/t/t2018-checkout-branch.sh index 21583154d8..b166cb302f 100755 --- a/t/t2018-checkout-branch.sh +++ b/t/t2018-checkout-branch.sh @@ -260,4 +260,14 @@ test_expect_success 'checkout -b to a new branch preserves mergeable changes des test_cmp expect actual ' +test_expect_success 'checkout -b rejects an invalid start point' ' + test_must_fail git checkout -b branch4 file1 2>err && + test_i18ngrep "is not a commit" err +' + +test_expect_failure 'checkout -b rejects an extra path argument' ' + test_must_fail git checkout -b branch5 branch1 file1 2>err && + test_i18ngrep "Cannot update paths and switch to branch" err +' + test_done diff --git a/t/t2027-checkout-track.sh b/t/t2027-checkout-track.sh new file mode 100755 index 0000000000..d0b41d7cd0 --- /dev/null +++ b/t/t2027-checkout-track.sh @@ -0,0 +1,24 @@ +#!/bin/sh + +test_description='tests for git branch --track' + +. ./test-lib.sh + +test_expect_success 'setup' ' + test_commit one && + test_commit two +' + +test_expect_success 'checkout --track -b creates a new tracking branch' ' + git checkout --track -b branch1 master && + test $(git rev-parse --abbrev-ref HEAD) = branch1 && + test $(git config --get branch.branch1.remote) = . && + test $(git config --get branch.branch1.merge) = refs/heads/master +' + +test_expect_failure 'checkout --track -b rejects an extra path argument' ' + test_must_fail git checkout --track -b branch2 master one.t 2>err && + test_i18ngrep "cannot be used with updating paths" err +' + +test_done From bb2198fb91ada94cfc6f8ec81b9dadcf3959fe10 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ren=C3=A9=20Scharfe?= Date: Sun, 24 May 2020 09:23:00 +0200 Subject: [PATCH 2/2] checkout: improve error messages for -b with extra argument MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit When we try to create a branch "foo" based on "origin/master" and give git commit -b an extra unsupported argument "bar", it confusingly reports: $ git checkout -b foo origin/master bar fatal: 'bar' is not a commit and a branch 'foo' cannot be created from it $ git checkout --track -b foo origin/master bar fatal: 'bar' is not a commit and a branch 'foo' cannot be created from it That's wrong, because it very well understands that "origin/master" is supposed to be the start point for the new branch and not "bar". Check if we got a commit and show more fitting messages in that case instead: $ git checkout -b foo origin/master bar fatal: Cannot update paths and switch to branch 'foo' at the same time. $ git checkout --track -b foo origin/master bar fatal: '--track' cannot be used with updating paths Original-patch-by: Jeff King Signed-off-by: René Scharfe Signed-off-by: Junio C Hamano --- builtin/checkout.c | 2 +- t/t2018-checkout-branch.sh | 2 +- t/t2027-checkout-track.sh | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/builtin/checkout.c b/builtin/checkout.c index e9d111bb83..24336e1017 100644 --- a/builtin/checkout.c +++ b/builtin/checkout.c @@ -1689,7 +1689,7 @@ static int checkout_main(int argc, const char **argv, const char *prefix, * Try to give more helpful suggestion. * new_branch && argc > 1 will be caught later. */ - if (opts->new_branch && argc == 1) + if (opts->new_branch && argc == 1 && !new_branch_info.commit) die(_("'%s' is not a commit and a branch '%s' cannot be created from it"), argv[0], opts->new_branch); diff --git a/t/t2018-checkout-branch.sh b/t/t2018-checkout-branch.sh index b166cb302f..5f761bc616 100755 --- a/t/t2018-checkout-branch.sh +++ b/t/t2018-checkout-branch.sh @@ -265,7 +265,7 @@ test_expect_success 'checkout -b rejects an invalid start point' ' test_i18ngrep "is not a commit" err ' -test_expect_failure 'checkout -b rejects an extra path argument' ' +test_expect_success 'checkout -b rejects an extra path argument' ' test_must_fail git checkout -b branch5 branch1 file1 2>err && test_i18ngrep "Cannot update paths and switch to branch" err ' diff --git a/t/t2027-checkout-track.sh b/t/t2027-checkout-track.sh index d0b41d7cd0..bcba1bf90c 100755 --- a/t/t2027-checkout-track.sh +++ b/t/t2027-checkout-track.sh @@ -16,7 +16,7 @@ test_expect_success 'checkout --track -b creates a new tracking branch' ' test $(git config --get branch.branch1.merge) = refs/heads/master ' -test_expect_failure 'checkout --track -b rejects an extra path argument' ' +test_expect_success 'checkout --track -b rejects an extra path argument' ' test_must_fail git checkout --track -b branch2 master one.t 2>err && test_i18ngrep "cannot be used with updating paths" err '