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-rwxr-xr-xt/t2018-checkout-branch.sh28
1 files changed, 28 insertions, 0 deletions
diff --git a/t/t2018-checkout-branch.sh b/t/t2018-checkout-branch.sh
index fa69016381..75874e85df 100755
--- a/t/t2018-checkout-branch.sh
+++ b/t/t2018-checkout-branch.sh
@@ -118,6 +118,15 @@ test_expect_success 'checkout -b to an existing branch fails' '
test_must_fail do_checkout branch2 $HEAD2
'
+test_expect_success 'checkout -b to @{-1} fails with the right branch name' '
+ git reset --hard HEAD &&
+ git checkout branch1 &&
+ git checkout branch2 &&
+ echo >expect "fatal: A branch named '\''branch1'\'' already exists." &&
+ test_must_fail git checkout -b @{-1} 2>actual &&
+ test_cmp expect actual
+'
+
test_expect_success 'checkout -B to an existing branch resets branch to HEAD' '
git checkout branch1 &&
@@ -169,4 +178,23 @@ test_expect_success 'checkout -f -B to an existing branch with mergeable changes
test_must_fail test_dirty_mergeable
'
+test_expect_success 'checkout -b <describe>' '
+ git tag -f -m "First commit" initial initial &&
+ git checkout -f change1 &&
+ name=$(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 fails before merging' '
+ git checkout branch1 &&
+ setup_dirty_mergeable &&
+ git commit -mfooble &&
+ test_must_fail git checkout -B branch1 initial &&
+ test_must_fail test_dirty_mergeable
+'
+
test_done