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-rwxr-xr-xt/t2020-checkout-detach.sh17
1 files changed, 16 insertions, 1 deletions
diff --git a/t/t2020-checkout-detach.sh b/t/t2020-checkout-detach.sh
index 8202ef8..8d90d02 100755
--- a/t/t2020-checkout-detach.sh
+++ b/t/t2020-checkout-detach.sh
@@ -45,6 +45,18 @@ test_expect_success 'checkout branch does not detach' '
check_not_detached
'
+for opt in "HEAD" "@"
+do
+ test_expect_success "checkout $opt no-op/don't detach" '
+ reset &&
+ cat .git/HEAD >expect &&
+ git checkout $opt &&
+ cat .git/HEAD >actual &&
+ check_not_detached &&
+ test_cmp expect actual
+ '
+done
+
test_expect_success 'checkout tag detaches' '
reset &&
git checkout tag &&
@@ -164,7 +176,10 @@ test_expect_success 'tracking count is accurate after orphan check' '
git config branch.child.merge refs/heads/main &&
git checkout child^ &&
git checkout child >stdout &&
- test_cmp expect stdout
+ test_cmp expect stdout &&
+
+ git checkout --detach child >stdout &&
+ test_grep ! "can be fast-forwarded\." stdout
'
test_expect_success 'no advice given for explicit detached head state' '