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authorMartin von Zweigbergk <martinvonz@gmail.com>2013-06-06 23:11:41 -0700
committerJunio C Hamano <gitster@pobox.com>2013-06-07 09:41:59 -0700
commit3f213981e44a9109d053550855dc0ae91d0287c6 (patch)
treed6f17edd97f03d6ec585d1e0624b7e1ff6d2ceac /t/t3425-rebase-topology-merges.sh
parent6a6bc5bdc4d73d0926bdbd8b65c8959583ba7911 (diff)
downloadgit-3f213981e44a9109d053550855dc0ae91d0287c6.tar.gz
git-3f213981e44a9109d053550855dc0ae91d0287c6.tar.xz
add tests for rebasing merged history
Signed-off-by: Martin von Zweigbergk <martinvonz@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't/t3425-rebase-topology-merges.sh')
-rwxr-xr-xt/t3425-rebase-topology-merges.sh258
1 files changed, 258 insertions, 0 deletions
diff --git a/t/t3425-rebase-topology-merges.sh b/t/t3425-rebase-topology-merges.sh
new file mode 100755
index 000000000..5400a059e
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+++ b/t/t3425-rebase-topology-merges.sh
@@ -0,0 +1,258 @@
+#!/bin/sh
+
+test_description='rebase topology tests with merges'
+. ./test-lib.sh
+. "$TEST_DIRECTORY"/lib-rebase.sh
+
+test_revision_subjects () {
+ expected="$1"
+ shift
+ set -- $(git log --format=%s --no-walk=unsorted "$@")
+ test "$expected" = "$*"
+}
+
+# a---b-----------c
+# \ \
+# d-------e \
+# \ \ \
+# n---o---w---v
+# \
+# z
+test_expect_success 'setup of non-linear-history' '
+ test_commit a &&
+ test_commit b &&
+ test_commit c &&
+ git checkout b &&
+ test_commit d &&
+ test_commit e
+
+ git checkout c &&
+ test_commit g &&
+ revert h g &&
+ git checkout d &&
+ cherry_pick G g &&
+ test_commit i &&
+ git checkout b &&
+ test_commit f
+
+ git checkout d &&
+ test_commit n &&
+ test_commit o &&
+ test_merge w e &&
+ test_merge v c &&
+ git checkout o &&
+ test_commit z
+'
+
+test_run_rebase () {
+ result=$1
+ shift
+ test_expect_$result "rebase $* after merge from upstream" "
+ reset_rebase &&
+ git rebase $* e w &&
+ test_cmp_rev e HEAD~2 &&
+ test_linear_range 'n o' e..
+ "
+}
+test_run_rebase success ''
+test_run_rebase success -m
+test_run_rebase success -i
+
+test_run_rebase () {
+ result=$1
+ shift
+ expected=$1
+ shift
+ test_expect_$result "rebase $* of non-linear history is linearized in place" "
+ reset_rebase &&
+ git rebase $* d w &&
+ test_cmp_rev d HEAD~3 &&
+ test_linear_range "\'"$expected"\'" d..
+ "
+}
+#TODO: make order consistent across all flavors of rebase
+test_run_rebase success 'e n o' ''
+test_run_rebase success 'e n o' -m
+test_run_rebase success 'n o e' -i
+
+test_run_rebase () {
+ result=$1
+ shift
+ expected=$1
+ shift
+ test_expect_$result "rebase $* of non-linear history is linearized upstream" "
+ reset_rebase &&
+ git rebase $* c w &&
+ test_cmp_rev c HEAD~4 &&
+ test_linear_range "\'"$expected"\'" c..
+ "
+}
+#TODO: make order consistent across all flavors of rebase
+test_run_rebase success 'd e n o' ''
+test_run_rebase success 'd e n o' -m
+test_run_rebase success 'd n o e' -i
+
+test_run_rebase () {
+ result=$1
+ shift
+ expected=$1
+ shift
+ test_expect_$result "rebase $* of non-linear history with merges after upstream merge is linearized" "
+ reset_rebase &&
+ git rebase $* c v &&
+ test_cmp_rev c HEAD~4 &&
+ test_linear_range "\'"$expected"\'" c..
+ "
+}
+#TODO: make order consistent across all flavors of rebase
+test_run_rebase success 'd e n o' ''
+test_run_rebase success 'd e n o' -m
+test_run_rebase success 'd n o e' -i
+
+test_expect_success "rebase -p is no-op in non-linear history" "
+ reset_rebase &&
+ git rebase -p d w &&
+ test_cmp_rev w HEAD
+"
+
+test_expect_success "rebase -p is no-op when base inside second parent" "
+ reset_rebase &&
+ git rebase -p e w &&
+ test_cmp_rev w HEAD
+"
+
+test_expect_failure "rebase -p --root on non-linear history is a no-op" "
+ reset_rebase &&
+ git rebase -p --root w &&
+ test_cmp_rev w HEAD
+"
+
+test_expect_success "rebase -p re-creates merge from side branch" "
+ reset_rebase &&
+ git rebase -p z w &&
+ test_cmp_rev z HEAD^ &&
+ test_cmp_rev w^2 HEAD^2
+"
+
+test_expect_success "rebase -p re-creates internal merge" "
+ reset_rebase &&
+ git rebase -p c w &&
+ test_cmp_rev c HEAD~4 &&
+ test_cmp_rev HEAD^2^ HEAD~3 &&
+ test_revision_subjects 'd n e o w' HEAD~3 HEAD~2 HEAD^2 HEAD^ HEAD
+"
+
+test_expect_success "rebase -p can re-create two branches on onto" "
+ reset_rebase &&
+ git rebase -p --onto c d w &&
+ test_cmp_rev c HEAD~3 &&
+ test_cmp_rev c HEAD^2^ &&
+ test_revision_subjects 'n e o w' HEAD~2 HEAD^2 HEAD^ HEAD
+"
+
+# f
+# /
+# a---b---c---g---h
+# \
+# d---G---i
+# \ \
+# e-------u
+#
+# uppercase = cherry-picked
+# h = reverted g
+test_expect_success 'setup of non-linear-history for patch-equivalence tests' '
+ git checkout e &&
+ test_merge u i
+'
+
+test_expect_success "rebase -p re-creates history around dropped commit matching upstream" "
+ reset_rebase &&
+ git rebase -p h u &&
+ test_cmp_rev h HEAD~3 &&
+ test_cmp_rev HEAD^2^ HEAD~2 &&
+ test_revision_subjects 'd i e u' HEAD~2 HEAD^2 HEAD^ HEAD
+"
+
+test_expect_success "rebase -p --onto in merged history drops patches in upstream" "
+ reset_rebase &&
+ git rebase -p --onto f h u &&
+ test_cmp_rev f HEAD~3 &&
+ test_cmp_rev HEAD^2^ HEAD~2 &&
+ test_revision_subjects 'd i e u' HEAD~2 HEAD^2 HEAD^ HEAD
+"
+
+test_expect_success "rebase -p --onto in merged history does not drop patches in onto" "
+ reset_rebase &&
+ git rebase -p --onto h f u &&
+ test_cmp_rev h HEAD~3 &&
+ test_cmp_rev HEAD^2~2 HEAD~2 &&
+ test_revision_subjects 'd G i e u' HEAD~2 HEAD^2^ HEAD^2 HEAD^ HEAD
+"
+
+# a---b---c---g---h
+# \
+# d---G---s
+# \ \ /
+# \ X
+# \ / \
+# e---t
+#
+# uppercase = cherry-picked
+# h = reverted g
+test_expect_success 'setup of non-linear-history for dropping whole side' '
+ git checkout G &&
+ test_merge s e &&
+ git checkout e &&
+ test_merge t G
+'
+
+test_expect_failure "rebase -p drops merge commit when entire first-parent side is dropped" "
+ reset_rebase &&
+ git rebase -p h s &&
+ test_cmp_rev h HEAD~2 &&
+ test_linear_range 'd e' h..
+"
+
+test_expect_success "rebase -p drops merge commit when entire second-parent side is dropped" "
+ reset_rebase &&
+ git rebase -p h t &&
+ test_cmp_rev h HEAD~2 &&
+ test_linear_range 'd e' h..
+"
+
+# a---b---c
+# \
+# d---e
+# \ \
+# n---r
+# \
+# o
+#
+# r = tree-same with n
+test_expect_success 'setup of non-linear-history for empty commits' '
+ git checkout n &&
+ git merge --no-commit e &&
+ git reset n . &&
+ git commit -m r &&
+ git reset --hard &&
+ git clean -f &&
+ git tag r
+'
+
+test_expect_success "rebase -p re-creates empty internal merge commit" "
+ reset_rebase &&
+ git rebase -p c r &&
+ test_cmp_rev c HEAD~3 &&
+ test_cmp_rev HEAD^2^ HEAD~2 &&
+ test_revision_subjects 'd e n r' HEAD~2 HEAD^2 HEAD^ HEAD
+"
+
+test_expect_success "rebase -p re-creates empty merge commit" "
+ reset_rebase &&
+ git rebase -p o r &&
+ test_cmp_rev e HEAD^2 &&
+ test_cmp_rev o HEAD^ &&
+ test_revision_subjects 'r' HEAD
+"
+
+test_done