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authorThomas Rast <trast@student.ethz.ch>2009-01-05 18:35:16 +0100
committerJunio C Hamano <gitster@pobox.com>2009-01-11 23:03:36 -0800
commit190f53232d1e92a57843df90e889bcfea39620d3 (patch)
tree220a1ac3c0fdced275e983644ed3de935c240dfd /t
parentd8fab0234d6db440a71f38f8538dbdefbbdfd077 (diff)
downloadgit-190f53232d1e92a57843df90e889bcfea39620d3.tar.gz
git-190f53232d1e92a57843df90e889bcfea39620d3.tar.xz
rebase: learn to rebase root commit
Teach git-rebase a new option --root, which instructs it to rebase the entire history leading up to <branch>. This option must be used with --onto <newbase>, and causes commits that already exist in <newbase> to be skipped. (Normal operation skips commits that already exist in <upstream> instead.) One possible use-case is with git-svn: suppose you start hacking (perhaps offline) on a new project, but later notice you want to commit this work to SVN. You will have to rebase the entire history, including the root commit, on a (possibly empty) commit coming from git-svn, to establish a history connection. This previously had to be done by cherry-picking the root commit manually. Signed-off-by: Thomas Rast <trast@student.ethz.ch> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't')
-rwxr-xr-xt/t3412-rebase-root.sh86
1 files changed, 86 insertions, 0 deletions
diff --git a/t/t3412-rebase-root.sh b/t/t3412-rebase-root.sh
new file mode 100755
index 000000000..dd919100d
--- /dev/null
+++ b/t/t3412-rebase-root.sh
@@ -0,0 +1,86 @@
+#!/bin/sh
+
+test_description='git rebase --root
+
+Tests if git rebase --root --onto <newparent> can rebase the root commit.
+'
+. ./test-lib.sh
+
+test_expect_success 'prepare repository' '
+ echo 1 > A &&
+ git add A &&
+ git commit -m 1 &&
+ echo 2 > A &&
+ git add A &&
+ git commit -m 2 &&
+ git symbolic-ref HEAD refs/heads/other &&
+ rm .git/index &&
+ echo 3 > B &&
+ git add B &&
+ git commit -m 3 &&
+ echo 1 > A &&
+ git add A &&
+ git commit -m 1b &&
+ echo 4 > B &&
+ git add B &&
+ git commit -m 4
+'
+
+test_expect_success 'rebase --root expects --onto' '
+ test_must_fail git rebase --root
+'
+
+test_expect_success 'setup pre-rebase hook' '
+ mkdir -p .git/hooks &&
+ cat >.git/hooks/pre-rebase <<EOF &&
+#!$SHELL_PATH
+echo "\$1,\$2" >.git/PRE-REBASE-INPUT
+EOF
+ chmod +x .git/hooks/pre-rebase
+'
+cat > expect <<EOF
+4
+3
+2
+1
+EOF
+
+test_expect_success 'rebase --root --onto <newbase>' '
+ git checkout -b work &&
+ git rebase --root --onto master &&
+ git log --pretty=tformat:"%s" > rebased &&
+ test_cmp expect rebased
+'
+
+test_expect_success 'pre-rebase got correct input (1)' '
+ test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,
+'
+
+test_expect_success 'rebase --root --onto <newbase> <branch>' '
+ git branch work2 other &&
+ git rebase --root --onto master work2 &&
+ git log --pretty=tformat:"%s" > rebased2 &&
+ test_cmp expect rebased2
+'
+
+test_expect_success 'pre-rebase got correct input (2)' '
+ test "z$(cat .git/PRE-REBASE-INPUT)" = z--root,work2
+'
+
+test_expect_success 'setup pre-rebase hook that fails' '
+ mkdir -p .git/hooks &&
+ cat >.git/hooks/pre-rebase <<EOF &&
+#!$SHELL_PATH
+false
+EOF
+ chmod +x .git/hooks/pre-rebase
+'
+
+test_expect_success 'pre-rebase hook stops rebase' '
+ git checkout -b stops1 other &&
+ GIT_EDITOR=: test_must_fail git rebase --root --onto master &&
+ test "z$(git symbolic-ref HEAD)" = zrefs/heads/stops1
+ test 0 = $(git rev-list other...stops1 | wc -l)
+'
+
+test_done