diff options
Diffstat (limited to 't/t6036-recursive-corner-cases.sh')
| -rwxr-xr-x | t/t6036-recursive-corner-cases.sh | 185 |
1 files changed, 182 insertions, 3 deletions
diff --git a/t/t6036-recursive-corner-cases.sh b/t/t6036-recursive-corner-cases.sh index b874141658..871577d90c 100755 --- a/t/t6036-recursive-corner-cases.sh +++ b/t/t6036-recursive-corner-cases.sh @@ -14,7 +14,80 @@ test_description='recursive merge corner cases' # R1 R2 # -test_expect_success setup ' +test_expect_success 'setup basic criss-cross + rename with no modifications' ' + ten="0 1 2 3 4 5 6 7 8 9" && + for i in $ten + do + echo line $i in a sample file + done >one && + for i in $ten + do + echo line $i in another sample file + done >two && + git add one two && + test_tick && git commit -m initial && + + git branch L1 && + git checkout -b R1 && + git mv one three && + test_tick && git commit -m R1 && + + git checkout L1 && + git mv two three && + test_tick && git commit -m L1 && + + git checkout L1^0 && + test_tick && git merge -s ours R1 && + git tag L2 && + + git checkout R1^0 && + test_tick && git merge -s ours L1 && + git tag R2 +' + +test_expect_success 'merge simple rename+criss-cross with no modifications' ' + git reset --hard && + git checkout L2^0 && + + test_must_fail git merge -s recursive R2^0 && + + test 5 = $(git ls-files -s | wc -l) && + test 3 = $(git ls-files -u | wc -l) && + test 0 = $(git ls-files -o | wc -l) && + + test $(git rev-parse :0:one) = $(git rev-parse L2:one) && + test $(git rev-parse :0:two) = $(git rev-parse R2:two) && + test $(git rev-parse :2:three) = $(git rev-parse L2:three) && + test $(git rev-parse :3:three) = $(git rev-parse R2:three) && + + cp two merged && + >empty && + test_must_fail git merge-file \ + -L "Temporary merge branch 2" \ + -L "" \ + -L "Temporary merge branch 1" \ + merged empty one && + test $(git rev-parse :1:three) = $(git hash-object merged) +' + +# +# Same as before, but modify L1 slightly: +# +# L1m L2 +# o---o +# / \ / \ +# o X ? +# \ / \ / +# o---o +# R1 R2 +# + +test_expect_success 'setup criss-cross + rename merges with basic modification' ' + git rm -rf . && + git clean -fdqx && + rm -rf .git && + git init && + ten="0 1 2 3 4 5 6 7 8 9" for i in $ten do @@ -30,6 +103,8 @@ test_expect_success setup ' git branch L1 && git checkout -b R1 && git mv one three && + echo more >>two && + git add two && test_tick && git commit -m R1 && git checkout L1 && @@ -45,11 +120,115 @@ test_expect_success setup ' git tag R2 ' -test_expect_success merge ' +test_expect_success 'merge criss-cross + rename merges with basic modification' ' git reset --hard && git checkout L2^0 && - test_must_fail git merge -s recursive R2^0 + test_must_fail git merge -s recursive R2^0 && + + test 5 = $(git ls-files -s | wc -l) && + test 3 = $(git ls-files -u | wc -l) && + test 0 = $(git ls-files -o | wc -l) && + + test $(git rev-parse :0:one) = $(git rev-parse L2:one) && + test $(git rev-parse :0:two) = $(git rev-parse R2:two) && + test $(git rev-parse :2:three) = $(git rev-parse L2:three) && + test $(git rev-parse :3:three) = $(git rev-parse R2:three) && + + head -n 10 two >merged && + cp one merge-me && + >empty && + test_must_fail git merge-file \ + -L "Temporary merge branch 2" \ + -L "" \ + -L "Temporary merge branch 1" \ + merged empty merge-me && + test $(git rev-parse :1:three) = $(git hash-object merged) +' + +# +# For the next test, we start with three commits in two lines of development +# which setup a rename/add conflict: +# Commit A: File 'a' exists +# Commit B: Rename 'a' -> 'new_a' +# Commit C: Modify 'a', create different 'new_a' +# Later, two different people merge and resolve differently: +# Commit D: Merge B & C, ignoring separately created 'new_a' +# Commit E: Merge B & C making use of some piece of secondary 'new_a' +# Finally, someone goes to merge D & E. Does git detect the conflict? +# +# B D +# o---o +# / \ / \ +# A o X ? F +# \ / \ / +# o---o +# C E +# + +test_expect_success 'setup differently handled merges of rename/add conflict' ' + git rm -rf . && + git clean -fdqx && + rm -rf .git && + git init && + + printf "0\n1\n2\n3\n4\n5\n6\n7\n8\n9\n" >a && + git add a && + test_tick && git commit -m A && + + git branch B && + git checkout -b C && + echo 10 >>a && + echo "other content" >>new_a && + git add a new_a && + test_tick && git commit -m C && + + git checkout B && + git mv a new_a && + test_tick && git commit -m B && + + git checkout B^0 && + test_must_fail git merge C && + git clean -f && + test_tick && git commit -m D && + git tag D && + + git checkout C^0 && + test_must_fail git merge B && + rm new_a~HEAD new_a && + printf "Incorrectly merged content" >>new_a && + git add -u && + test_tick && git commit -m E && + git tag E +' + +test_expect_success 'git detects differently handled merges conflict' ' + git reset --hard && + git checkout D^0 && + + git merge -s recursive E^0 && { + echo "BAD: should have conflicted" + test "Incorrectly merged content" = "$(cat new_a)" && + echo "BAD: Silently accepted wrong content" + return 1 + } + + test 3 = $(git ls-files -s | wc -l) && + test 3 = $(git ls-files -u | wc -l) && + test 0 = $(git ls-files -o | wc -l) && + + test $(git rev-parse :2:new_a) = $(git rev-parse D:new_a) && + test $(git rev-parse :3:new_a) = $(git rev-parse E:new_a) && + + git cat-file -p B:new_a >>merged && + git cat-file -p C:new_a >>merge-me && + >empty && + test_must_fail git merge-file \ + -L "Temporary merge branch 2" \ + -L "" \ + -L "Temporary merge branch 1" \ + merged empty merge-me && + test $(git rev-parse :1:new_a) = $(git hash-object merged) ' test_done |