diff options
| -rw-r--r-- | Documentation/technical/directory-rename-detection.txt | 3 | ||||
| -rwxr-xr-x | t/t6423-merge-rename-directories.sh | 253 |
2 files changed, 230 insertions, 26 deletions
diff --git a/Documentation/technical/directory-rename-detection.txt b/Documentation/technical/directory-rename-detection.txt index 5d03539412..49b83ef3cc 100644 --- a/Documentation/technical/directory-rename-detection.txt +++ b/Documentation/technical/directory-rename-detection.txt @@ -73,6 +73,9 @@ additional rules: b) Only apply implicit directory renames to directories if the other side of history is the one doing the renaming. + c) Do not perform directory rename detection for directories which had no + new paths added to them. + Limitations -- support in different commands -------------------------------------------- diff --git a/t/t6423-merge-rename-directories.sh b/t/t6423-merge-rename-directories.sh index 00eac6e9a2..06b46af765 100755 --- a/t/t6423-merge-rename-directories.sh +++ b/t/t6423-merge-rename-directories.sh @@ -4049,31 +4049,124 @@ test_expect_success '12a: Moving one directory hierarchy into another' ' ) ' -# Testcase 12b, Moving two directory hierarchies into each other +# Testcase 12b1, Moving two directory hierarchies into each other # (Related to testcases 1c and 12c) # Commit O: node1/{leaf1, leaf2}, node2/{leaf3, leaf4} # Commit A: node1/{leaf1, leaf2, node2/{leaf3, leaf4}} # Commit B: node2/{leaf3, leaf4, node1/{leaf1, leaf2}} -# Expected: node1/node2/node1/{leaf1, leaf2}, +# Expected: node1/node2/{leaf3, leaf4} +# node2/node1/{leaf1, leaf2} +# NOTE: If there were new files added to the old node1/ or node2/ directories, +# then we would need to detect renames for those directories and would +# find that: +# commit A renames node2/ -> node1/node2/ +# commit B renames node1/ -> node2/node1/ +# Applying those directory renames to the initial result (making all +# four paths experience a transitive renaming), yields +# node1/node2/node1/{leaf1, leaf2} # node2/node1/node2/{leaf3, leaf4} +# as the result. It may be really weird to have two directories +# rename each other, but simple rules give weird results when given +# weird inputs. HOWEVER, the "If" at the beginning of those NOTE was +# false; there were no new files added and thus there is no directory +# rename detection to perform. As such, we just have simple renames +# and the expected answer is: +# node1/node2/{leaf3, leaf4} +# node2/node1/{leaf1, leaf2} + +test_setup_12b1 () { + test_create_repo 12b1 && + ( + cd 12b1 && + + mkdir -p node1 node2 && + echo leaf1 >node1/leaf1 && + echo leaf2 >node1/leaf2 && + echo leaf3 >node2/leaf3 && + echo leaf4 >node2/leaf4 && + git add node1 node2 && + test_tick && + git commit -m "O" && + + git branch O && + git branch A && + git branch B && + + git checkout A && + git mv node2/ node1/ && + test_tick && + git commit -m "A" && + + git checkout B && + git mv node1/ node2/ && + test_tick && + git commit -m "B" + ) +} + +test_expect_failure '12b1: Moving two directory hierarchies into each other' ' + test_setup_12b1 && + ( + cd 12b1 && + + git checkout A^0 && + + git -c merge.directoryRenames=true merge -s recursive B^0 && + + git ls-files -s >out && + test_line_count = 4 out && + + git rev-parse >actual \ + HEAD:node2/node1/leaf1 \ + HEAD:node2/node1/leaf2 \ + HEAD:node1/node2/leaf3 \ + HEAD:node1/node2/leaf4 && + git rev-parse >expect \ + O:node1/leaf1 \ + O:node1/leaf2 \ + O:node2/leaf3 \ + O:node2/leaf4 && + test_cmp expect actual + ) +' + +# Testcase 12b2, Moving two directory hierarchies into each other +# (Related to testcases 1c and 12c) +# Commit O: node1/{leaf1, leaf2}, node2/{leaf3, leaf4} +# Commit A: node1/{leaf1, leaf2, leaf5, node2/{leaf3, leaf4}} +# Commit B: node2/{leaf3, leaf4, leaf6, node1/{leaf1, leaf2}} +# Expected: node1/node2/{node1/{leaf1, leaf2}, leaf6} +# node2/node1/{node2/{leaf3, leaf4}, leaf5} # NOTE: Without directory renames, we would expect -# node2/node1/{leaf1, leaf2}, -# node1/node2/{leaf3, leaf4} +# A: node2/leaf3 -> node1/node2/leaf3 +# A: node2/leaf1 -> node1/node2/leaf4 +# A: Adds node1/leaf5 +# B: node1/leaf1 -> node2/node1/leaf1 +# B: node1/leaf2 -> node2/node1/leaf2 +# B: Adds node2/leaf6 # with directory rename detection, we note that # commit A renames node2/ -> node1/node2/ # commit B renames node1/ -> node2/node1/ -# therefore, applying those directory renames to the initial result -# (making all four paths experience a transitive renaming), yields -# the expected result. +# therefore, applying A's directory rename to the paths added in B gives: +# B: node1/leaf1 -> node1/node2/node1/leaf1 +# B: node1/leaf2 -> node1/node2/node1/leaf2 +# B: Adds node1/node2/leaf6 +# and applying B's directory rename to the paths added in A gives: +# A: node2/leaf3 -> node2/node1/node2/leaf3 +# A: node2/leaf1 -> node2/node1/node2/leaf4 +# A: Adds node2/node1/leaf5 +# resulting in the expected +# node1/node2/{node1/{leaf1, leaf2}, leaf6} +# node2/node1/{node2/{leaf3, leaf4}, leaf5} # # You may ask, is it weird to have two directories rename each other? # To which, I can do no more than shrug my shoulders and say that # even simple rules give weird results when given weird inputs. -test_setup_12b () { - test_create_repo 12b && +test_setup_12b2 () { + test_create_repo 12b2 && ( - cd 12b && + cd 12b2 && mkdir -p node1 node2 && echo leaf1 >node1/leaf1 && @@ -4090,43 +4183,51 @@ test_setup_12b () { git checkout A && git mv node2/ node1/ && + echo leaf5 >node1/leaf5 && + git add node1/leaf5 && test_tick && git commit -m "A" && git checkout B && git mv node1/ node2/ && + echo leaf6 >node2/leaf6 && + git add node2/leaf6 && test_tick && git commit -m "B" ) } -test_expect_success '12b: Moving two directory hierarchies into each other' ' - test_setup_12b && +test_expect_success '12b2: Moving two directory hierarchies into each other' ' + test_setup_12b2 && ( - cd 12b && + cd 12b2 && git checkout A^0 && git -c merge.directoryRenames=true merge -s recursive B^0 && git ls-files -s >out && - test_line_count = 4 out && + test_line_count = 6 out && git rev-parse >actual \ HEAD:node1/node2/node1/leaf1 \ HEAD:node1/node2/node1/leaf2 \ HEAD:node2/node1/node2/leaf3 \ - HEAD:node2/node1/node2/leaf4 && + HEAD:node2/node1/node2/leaf4 \ + HEAD:node2/node1/leaf5 \ + HEAD:node1/node2/leaf6 && git rev-parse >expect \ O:node1/leaf1 \ O:node1/leaf2 \ O:node2/leaf3 \ - O:node2/leaf4 && + O:node2/leaf4 \ + A:node1/leaf5 \ + B:node2/leaf6 && test_cmp expect actual ) ' -# Testcase 12c, Moving two directory hierarchies into each other w/ content merge +# Testcase 12c1, Moving two directory hierarchies into each other w/ content merge # (Related to testcase 12b) # Commit O: node1/{ leaf1_1, leaf2_1}, node2/{leaf3_1, leaf4_1} # Commit A: node1/{ leaf1_2, leaf2_2, node2/{leaf3_2, leaf4_2}} @@ -4134,13 +4235,13 @@ test_expect_success '12b: Moving two directory hierarchies into each other' ' # Expected: Content merge conflicts for each of: # node1/node2/node1/{leaf1, leaf2}, # node2/node1/node2/{leaf3, leaf4} -# NOTE: This is *exactly* like 12c, except that every path is modified on +# NOTE: This is *exactly* like 12b1, except that every path is modified on # each side of the merge. -test_setup_12c () { - test_create_repo 12c && +test_setup_12c1 () { + test_create_repo 12c1 && ( - cd 12c && + cd 12c1 && mkdir -p node1 node2 && printf "1\n2\n3\n4\n5\n6\n7\n8\nleaf1\n" >node1/leaf1 && @@ -4171,10 +4272,10 @@ test_setup_12c () { ) } -test_expect_success '12c: Moving one directory hierarchy into another w/ content merge' ' - test_setup_12c && +test_expect_failure '12c1: Moving one directory hierarchy into another w/ content merge' ' + test_setup_12c1 && ( - cd 12c && + cd 12c1 && git checkout A^0 && @@ -4184,6 +4285,102 @@ test_expect_success '12c: Moving one directory hierarchy into another w/ content test_line_count = 12 out && git rev-parse >actual \ + :1:node2/node1/leaf1 \ + :1:node2/node1/leaf2 \ + :1:node1/node2/leaf3 \ + :1:node1/node2/leaf4 \ + :2:node2/node1/leaf1 \ + :2:node2/node1/leaf2 \ + :2:node1/node2/leaf3 \ + :2:node1/node2/leaf4 \ + :3:node2/node1/leaf1 \ + :3:node2/node1/leaf2 \ + :3:node1/node2/leaf3 \ + :3:node1/node2/leaf4 && + git rev-parse >expect \ + O:node1/leaf1 \ + O:node1/leaf2 \ + O:node2/leaf3 \ + O:node2/leaf4 \ + A:node1/leaf1 \ + A:node1/leaf2 \ + A:node1/node2/leaf3 \ + A:node1/node2/leaf4 \ + B:node2/node1/leaf1 \ + B:node2/node1/leaf2 \ + B:node2/leaf3 \ + B:node2/leaf4 && + test_cmp expect actual + ) +' + +# Testcase 12c2, Moving two directory hierarchies into each other w/ content merge +# (Related to testcase 12b) +# Commit O: node1/{ leaf1_1, leaf2_1}, node2/{leaf3_1, leaf4_1} +# Commit A: node1/{ leaf1_2, leaf2_2, node2/{leaf3_2, leaf4_2}, leaf5} +# Commit B: node2/{node1/{leaf1_3, leaf2_3}, leaf3_3, leaf4_3, leaf6} +# Expected: Content merge conflicts for each of: +# node1/node2/node1/{leaf1, leaf2} +# node2/node1/node2/{leaf3, leaf4} +# plus +# node2/node1/leaf5 +# node1/node2/leaf6 +# NOTE: This is *exactly* like 12b2, except that every path from O is modified +# on each side of the merge. + +test_setup_12c2 () { + test_create_repo 12c2 && + ( + cd 12c2 && + + mkdir -p node1 node2 && + printf "1\n2\n3\n4\n5\n6\n7\n8\nleaf1\n" >node1/leaf1 && + printf "1\n2\n3\n4\n5\n6\n7\n8\nleaf2\n" >node1/leaf2 && + printf "1\n2\n3\n4\n5\n6\n7\n8\nleaf3\n" >node2/leaf3 && + printf "1\n2\n3\n4\n5\n6\n7\n8\nleaf4\n" >node2/leaf4 && + git add node1 node2 && + test_tick && + git commit -m "O" && + + git branch O && + git branch A && + git branch B && + + git checkout A && + git mv node2/ node1/ && + for i in `git ls-files`; do echo side A >>$i; done && + git add -u && + echo leaf5 >node1/leaf5 && + git add node1/leaf5 && + test_tick && + git commit -m "A" && + + git checkout B && + git mv node1/ node2/ && + for i in `git ls-files`; do echo side B >>$i; done && + git add -u && + echo leaf6 >node2/leaf6 && + git add node2/leaf6 && + test_tick && + git commit -m "B" + ) +} + +test_expect_success '12c2: Moving one directory hierarchy into another w/ content merge' ' + test_setup_12c2 && + ( + cd 12c2 && + + git checkout A^0 && + + test_must_fail git -c merge.directoryRenames=true merge -s recursive B^0 && + + git ls-files -s >out && + test_line_count = 14 out && + git ls-files -u >out && + test_line_count = 12 out && + + git rev-parse >actual \ :1:node1/node2/node1/leaf1 \ :1:node1/node2/node1/leaf2 \ :1:node2/node1/node2/leaf3 \ @@ -4195,7 +4392,9 @@ test_expect_success '12c: Moving one directory hierarchy into another w/ content :3:node1/node2/node1/leaf1 \ :3:node1/node2/node1/leaf2 \ :3:node2/node1/node2/leaf3 \ - :3:node2/node1/node2/leaf4 && + :3:node2/node1/node2/leaf4 \ + :0:node2/node1/leaf5 \ + :0:node1/node2/leaf6 && git rev-parse >expect \ O:node1/leaf1 \ O:node1/leaf2 \ @@ -4208,7 +4407,9 @@ test_expect_success '12c: Moving one directory hierarchy into another w/ content B:node2/node1/leaf1 \ B:node2/node1/leaf2 \ B:node2/leaf3 \ - B:node2/leaf4 && + B:node2/leaf4 \ + A:node1/leaf5 \ + B:node2/leaf6 && test_cmp expect actual ) ' |