We didn't test this setup at all, and doing so reveals a few
bugs:
1. Cloning a repository with an orphaned detached HEAD
(i.e., one that points to history that is not
referenced by any ref) will fail.
2. Cloning a repository with a detached HEAD that points
to a tag will cause us to write a bogus "refs/tags/..."
ref into the HEAD symbolic ref. We should probably
detach instead.
3. Cloning a repository with a detached HEAD that points
to a branch will cause us to checkout that branch. This
is a known limitation of the git protocol (we have to
guess at HEAD's destination, since the symref contents
aren't shown to us). This test serves to document the
desired behavior, which can only be achieved once the
git protocol learns to share symref information.
Signed-off-by: Jeff King <peff@xxxxxxxx>
---
Just a repost of my earlier patch.
t/t5707-clone-detached.sh | 76 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 76 insertions(+), 0 deletions(-)
create mode 100755 t/t5707-clone-detached.sh
diff --git a/t/t5707-clone-detached.sh b/t/t5707-clone-detached.sh
new file mode 100755
index 0000000..fca8609
--- /dev/null
+++ b/t/t5707-clone-detached.sh
@@ -0,0 +1,76 @@
+#!/bin/sh
+
+test_description='test cloning a repository with detached HEAD'
+. ./test-lib.sh
+
+head_is_detached() {
+ git --git-dir=$1/.git rev-parse --verify HEAD &&
+ test_must_fail git --git-dir=$1/.git symbolic-ref HEAD
+}
+
+test_expect_success 'setup' '
+ echo one >file &&
+ git add file &&
+ git commit -m one &&
+ echo two >file &&
+ git commit -a -m two &&
+ git tag two &&
+ echo three >file &&
+ git commit -a -m three
+'
+
+test_expect_success 'clone repo (detached HEAD points to branch)' '
+ git checkout --detach master &&
+ git clone "file://$PWD" detached-branch
+'
+test_expect_success 'cloned HEAD matches' '
+ echo three >expect &&
+ git --git-dir=detached-branch/.git log -1 --format=%s >actual &&
+ test_cmp expect actual
+'
+test_expect_failure 'cloned HEAD is detached' '
+ head_is_detached detached-branch
+'
+
+test_expect_success 'clone repo (detached HEAD points to tag)' '
+ git checkout --detach two &&
+ git clone "file://$PWD" detached-tag
+'
+test_expect_success 'cloned HEAD matches' '
+ echo two >expect &&
+ git --git-dir=detached-tag/.git log -1 --format=%s >actual &&
+ test_cmp expect actual
+'
+test_expect_failure 'cloned HEAD is detached' '
+ head_is_detached detached-tag
+'
+
+test_expect_success 'clone repo (detached HEAD points to history)' '
+ git checkout --detach two^ &&
+ git clone "file://$PWD" detached-history
+'
+test_expect_success 'cloned HEAD matches' '
+ echo one >expect &&
+ git --git-dir=detached-history/.git log -1 --format=%s >actual &&
+ test_cmp expect actual
+'
+test_expect_success 'cloned HEAD is detached' '
+ head_is_detached detached-history
+'
+
+test_expect_failure 'clone repo (orphan detached HEAD)' '
+ git checkout --detach master &&
+ echo four >file &&
+ git commit -a -m four &&
+ git clone "file://$PWD" detached-orphan
+'
+test_expect_failure 'cloned HEAD matches' '
+ echo four >expect &&
+ git --git-dir=detached-orphan/.git log -1 --format=%s >actual &&
+ test_cmp expect actual
+'
+test_expect_failure 'cloned HEAD is detached' '
+ head_is_detached detached-orphan
+'
+
+test_done
--
1.7.6.rc0.36.g5a0d
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