diff options
Diffstat (limited to 'third_party/git/t/t6426-merge-skip-unneeded-updates.sh')
| -rwxr-xr-x | third_party/git/t/t6426-merge-skip-unneeded-updates.sh | 770 |
1 files changed, 0 insertions, 770 deletions
diff --git a/third_party/git/t/t6426-merge-skip-unneeded-updates.sh b/third_party/git/t/t6426-merge-skip-unneeded-updates.sh deleted file mode 100755 index 699813671c8c..000000000000 --- a/third_party/git/t/t6426-merge-skip-unneeded-updates.sh +++ /dev/null @@ -1,770 +0,0 @@ -#!/bin/sh - -test_description="merge cases" - -# The setup for all of them, pictorially, is: -# -# A -# o -# / \ -# O o ? -# \ / -# o -# B -# -# To help make it easier to follow the flow of tests, they have been -# divided into sections and each test will start with a quick explanation -# of what commits O, A, and B contain. -# -# Notation: -# z/{b,c} means files z/b and z/c both exist -# x/d_1 means file x/d exists with content d1. (Purpose of the -# underscore notation is to differentiate different -# files that might be renamed into each other's paths.) - -. ./test-lib.sh - - -########################################################################### -# SECTION 1: Cases involving no renames (one side has subset of changes of -# the other side) -########################################################################### - -# Testcase 1a, Changes on A, subset of changes on B -# Commit O: b_1 -# Commit A: b_2 -# Commit B: b_3 -# Expected: b_2 - -test_setup_1a () { - test_create_repo 1a_$1 && - ( - cd 1a_$1 && - - test_write_lines 1 2 3 4 5 6 7 8 9 10 >b && - git add b && - test_tick && - git commit -m "O" && - - git branch O && - git branch A && - git branch B && - - git checkout A && - test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b && - git add b && - test_tick && - git commit -m "A" && - - git checkout B && - test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b && - git add b && - test_tick && - git commit -m "B" - ) -} - -test_expect_success '1a-L: Modify(A)/Modify(B), change on B subset of A' ' - test_setup_1a L && - ( - cd 1a_L && - - git checkout A^0 && - - test-tool chmtime --get -3600 b >old-mtime && - - GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err && - - test_must_be_empty err && - - # Make sure b was NOT updated - test-tool chmtime --get b >new-mtime && - test_cmp old-mtime new-mtime && - - git ls-files -s >index_files && - test_line_count = 1 index_files && - - git rev-parse >actual HEAD:b && - git rev-parse >expect A:b && - test_cmp expect actual && - - git hash-object b >actual && - git rev-parse A:b >expect && - test_cmp expect actual - ) -' - -test_expect_success '1a-R: Modify(A)/Modify(B), change on B subset of A' ' - test_setup_1a R && - ( - cd 1a_R && - - git checkout B^0 && - - test-tool chmtime --get -3600 b >old-mtime && - GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err && - - # Make sure b WAS updated - test-tool chmtime --get b >new-mtime && - test $(cat old-mtime) -lt $(cat new-mtime) && - - test_must_be_empty err && - - git ls-files -s >index_files && - test_line_count = 1 index_files && - - git rev-parse >actual HEAD:b && - git rev-parse >expect A:b && - test_cmp expect actual && - - git hash-object b >actual && - git rev-parse A:b >expect && - test_cmp expect actual - ) -' - - -########################################################################### -# SECTION 2: Cases involving basic renames -########################################################################### - -# Testcase 2a, Changes on A, rename on B -# Commit O: b_1 -# Commit A: b_2 -# Commit B: c_1 -# Expected: c_2 - -test_setup_2a () { - test_create_repo 2a_$1 && - ( - cd 2a_$1 && - - test_seq 1 10 >b && - git add b && - test_tick && - git commit -m "O" && - - git branch O && - git branch A && - git branch B && - - git checkout A && - test_seq 1 11 >b && - git add b && - test_tick && - git commit -m "A" && - - git checkout B && - git mv b c && - test_tick && - git commit -m "B" - ) -} - -test_expect_success '2a-L: Modify/rename, merge into modify side' ' - test_setup_2a L && - ( - cd 2a_L && - - git checkout A^0 && - - test_path_is_missing c && - GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err && - - test_path_is_file c && - - git ls-files -s >index_files && - test_line_count = 1 index_files && - - git rev-parse >actual HEAD:c && - git rev-parse >expect A:b && - test_cmp expect actual && - - git hash-object c >actual && - git rev-parse A:b >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:b && - test_path_is_missing b - ) -' - -test_expect_success '2a-R: Modify/rename, merge into rename side' ' - test_setup_2a R && - ( - cd 2a_R && - - git checkout B^0 && - - test-tool chmtime --get -3600 c >old-mtime && - GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err && - - # Make sure c WAS updated - test-tool chmtime --get c >new-mtime && - test $(cat old-mtime) -lt $(cat new-mtime) && - - test_must_be_empty err && - - git ls-files -s >index_files && - test_line_count = 1 index_files && - - git rev-parse >actual HEAD:c && - git rev-parse >expect A:b && - test_cmp expect actual && - - git hash-object c >actual && - git rev-parse A:b >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:b && - test_path_is_missing b - ) -' - -# Testcase 2b, Changed and renamed on A, subset of changes on B -# Commit O: b_1 -# Commit A: c_2 -# Commit B: b_3 -# Expected: c_2 - -test_setup_2b () { - test_create_repo 2b_$1 && - ( - cd 2b_$1 && - - test_write_lines 1 2 3 4 5 6 7 8 9 10 >b && - git add b && - test_tick && - git commit -m "O" && - - git branch O && - git branch A && - git branch B && - - git checkout A && - test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b && - git add b && - git mv b c && - test_tick && - git commit -m "A" && - - git checkout B && - test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b && - git add b && - test_tick && - git commit -m "B" - ) -} - -test_expect_success '2b-L: Rename+Mod(A)/Mod(B), B mods subset of A' ' - test_setup_2b L && - ( - cd 2b_L && - - git checkout A^0 && - - test-tool chmtime --get -3600 c >old-mtime && - GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err && - - test_must_be_empty err && - - # Make sure c WAS updated - test-tool chmtime --get c >new-mtime && - test_cmp old-mtime new-mtime && - - git ls-files -s >index_files && - test_line_count = 1 index_files && - - git rev-parse >actual HEAD:c && - git rev-parse >expect A:c && - test_cmp expect actual && - - git hash-object c >actual && - git rev-parse A:c >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:b && - test_path_is_missing b - ) -' - -test_expect_success '2b-R: Rename+Mod(A)/Mod(B), B mods subset of A' ' - test_setup_2b R && - ( - cd 2b_R && - - git checkout B^0 && - - test_path_is_missing c && - GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err && - - # Make sure c now present (and thus was updated) - test_path_is_file c && - - test_must_be_empty err && - - git ls-files -s >index_files && - test_line_count = 1 index_files && - - git rev-parse >actual HEAD:c && - git rev-parse >expect A:c && - test_cmp expect actual && - - git hash-object c >actual && - git rev-parse A:c >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:b && - test_path_is_missing b - ) -' - -# Testcase 2c, Changes on A, rename on B -# Commit O: b_1 -# Commit A: b_2, c_3 -# Commit B: c_1 -# Expected: rename/add conflict c_2 vs c_3 -# -# NOTE: Since A modified b_1->b_2, and B renamed b_1->c_1, the threeway -# merge of those files should result in c_2. We then should have a -# rename/add conflict between c_2 and c_3. However, if we note in -# merge_content() that A had the right contents (b_2 has same -# contents as c_2, just at a different name), and that A had the -# right path present (c_3 existed) and thus decides that it can -# skip the update, then we're in trouble. This test verifies we do -# not make that particular mistake. - -test_setup_2c () { - test_create_repo 2c && - ( - cd 2c && - - test_seq 1 10 >b && - git add b && - test_tick && - git commit -m "O" && - - git branch O && - git branch A && - git branch B && - - git checkout A && - test_seq 1 11 >b && - echo whatever >c && - git add b c && - test_tick && - git commit -m "A" && - - git checkout B && - git mv b c && - test_tick && - git commit -m "B" - ) -} - -test_expect_success '2c: Modify b & add c VS rename b->c' ' - test_setup_2c && - ( - cd 2c && - - git checkout A^0 && - - test-tool chmtime --get -3600 c >old-mtime && - GIT_MERGE_VERBOSITY=3 && - export GIT_MERGE_VERBOSITY && - test_must_fail git merge -s recursive B^0 >out 2>err && - - test_i18ngrep "CONFLICT (.*/add):" out && - test_must_be_empty err && - - # Make sure c WAS updated - test-tool chmtime --get c >new-mtime && - test $(cat old-mtime) -lt $(cat new-mtime) - - # FIXME: rename/add conflicts are horribly broken right now; - # when I get back to my patch series fixing it and - # rename/rename(2to1) conflicts to bring them in line with - # how add/add conflicts behave, then checks like the below - # could be added. But that patch series is waiting until - # the rename-directory-detection series lands, which this - # is part of. And in the mean time, I do not want to further - # enforce broken behavior. So for now, the main test is the - # one above that err is an empty file. - - #git ls-files -s >index_files && - #test_line_count = 2 index_files && - - #git rev-parse >actual :2:c :3:c && - #git rev-parse >expect A:b A:c && - #test_cmp expect actual && - - #git cat-file -p A:b >>merged && - #git cat-file -p A:c >>merge-me && - #>empty && - #test_must_fail git merge-file \ - # -L "Temporary merge branch 1" \ - # -L "" \ - # -L "Temporary merge branch 2" \ - # merged empty merge-me && - #sed -e "s/^\([<=>]\)/\1\1\1/" merged >merged-internal && - - #git hash-object c >actual && - #git hash-object merged-internal >expect && - #test_cmp expect actual && - - #test_path_is_missing b - ) -' - - -########################################################################### -# SECTION 3: Cases involving directory renames -# -# NOTE: -# Directory renames only apply when one side renames a directory, and the -# other side adds or renames a path into that directory. Applying the -# directory rename to that new path creates a new pathname that didn't -# exist on either side of history. Thus, it is impossible for the -# merge contents to already be at the right path, so all of these checks -# exist just to make sure that updates are not skipped. -########################################################################### - -# Testcase 3a, Change + rename into dir foo on A, dir rename foo->bar on B -# Commit O: bq_1, foo/whatever -# Commit A: foo/{bq_2, whatever} -# Commit B: bq_1, bar/whatever -# Expected: bar/{bq_2, whatever} - -test_setup_3a () { - test_create_repo 3a_$1 && - ( - cd 3a_$1 && - - mkdir foo && - test_seq 1 10 >bq && - test_write_lines a b c d e f g h i j k >foo/whatever && - git add bq foo/whatever && - test_tick && - git commit -m "O" && - - git branch O && - git branch A && - git branch B && - - git checkout A && - test_seq 1 11 >bq && - git add bq && - git mv bq foo/ && - test_tick && - git commit -m "A" && - - git checkout B && - git mv foo/ bar/ && - test_tick && - git commit -m "B" - ) -} - -test_expect_success '3a-L: bq_1->foo/bq_2 on A, foo/->bar/ on B' ' - test_setup_3a L && - ( - cd 3a_L && - - git checkout A^0 && - - test_path_is_missing bar/bq && - GIT_MERGE_VERBOSITY=3 git -c merge.directoryRenames=true merge -s recursive B^0 >out 2>err && - - test_must_be_empty err && - - test_path_is_file bar/bq && - - git ls-files -s >index_files && - test_line_count = 2 index_files && - - git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever && - git rev-parse >expect A:foo/bq A:foo/whatever && - test_cmp expect actual && - - git hash-object bar/bq bar/whatever >actual && - git rev-parse A:foo/bq A:foo/whatever >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:bq HEAD:foo/bq && - test_path_is_missing bq foo/bq foo/whatever - ) -' - -test_expect_success '3a-R: bq_1->foo/bq_2 on A, foo/->bar/ on B' ' - test_setup_3a R && - ( - cd 3a_R && - - git checkout B^0 && - - test_path_is_missing bar/bq && - GIT_MERGE_VERBOSITY=3 git -c merge.directoryRenames=true merge -s recursive A^0 >out 2>err && - - test_must_be_empty err && - - test_path_is_file bar/bq && - - git ls-files -s >index_files && - test_line_count = 2 index_files && - - git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever && - git rev-parse >expect A:foo/bq A:foo/whatever && - test_cmp expect actual && - - git hash-object bar/bq bar/whatever >actual && - git rev-parse A:foo/bq A:foo/whatever >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:bq HEAD:foo/bq && - test_path_is_missing bq foo/bq foo/whatever - ) -' - -# Testcase 3b, rename into dir foo on A, dir rename foo->bar + change on B -# Commit O: bq_1, foo/whatever -# Commit A: foo/{bq_1, whatever} -# Commit B: bq_2, bar/whatever -# Expected: bar/{bq_2, whatever} - -test_setup_3b () { - test_create_repo 3b_$1 && - ( - cd 3b_$1 && - - mkdir foo && - test_seq 1 10 >bq && - test_write_lines a b c d e f g h i j k >foo/whatever && - git add bq foo/whatever && - test_tick && - git commit -m "O" && - - git branch O && - git branch A && - git branch B && - - git checkout A && - git mv bq foo/ && - test_tick && - git commit -m "A" && - - git checkout B && - test_seq 1 11 >bq && - git add bq && - git mv foo/ bar/ && - test_tick && - git commit -m "B" - ) -} - -test_expect_success '3b-L: bq_1->foo/bq_2 on A, foo/->bar/ on B' ' - test_setup_3b L && - ( - cd 3b_L && - - git checkout A^0 && - - test_path_is_missing bar/bq && - GIT_MERGE_VERBOSITY=3 git -c merge.directoryRenames=true merge -s recursive B^0 >out 2>err && - - test_must_be_empty err && - - test_path_is_file bar/bq && - - git ls-files -s >index_files && - test_line_count = 2 index_files && - - git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever && - git rev-parse >expect B:bq A:foo/whatever && - test_cmp expect actual && - - git hash-object bar/bq bar/whatever >actual && - git rev-parse B:bq A:foo/whatever >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:bq HEAD:foo/bq && - test_path_is_missing bq foo/bq foo/whatever - ) -' - -test_expect_success '3b-R: bq_1->foo/bq_2 on A, foo/->bar/ on B' ' - test_setup_3b R && - ( - cd 3b_R && - - git checkout B^0 && - - test_path_is_missing bar/bq && - GIT_MERGE_VERBOSITY=3 git -c merge.directoryRenames=true merge -s recursive A^0 >out 2>err && - - test_must_be_empty err && - - test_path_is_file bar/bq && - - git ls-files -s >index_files && - test_line_count = 2 index_files && - - git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever && - git rev-parse >expect B:bq A:foo/whatever && - test_cmp expect actual && - - git hash-object bar/bq bar/whatever >actual && - git rev-parse B:bq A:foo/whatever >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:bq HEAD:foo/bq && - test_path_is_missing bq foo/bq foo/whatever - ) -' - -########################################################################### -# SECTION 4: Cases involving dirty changes -########################################################################### - -# Testcase 4a, Changed on A, subset of changes on B, locally modified -# Commit O: b_1 -# Commit A: b_2 -# Commit B: b_3 -# Working copy: b_4 -# Expected: b_2 for merge, b_4 in working copy - -test_setup_4a () { - test_create_repo 4a && - ( - cd 4a && - - test_write_lines 1 2 3 4 5 6 7 8 9 10 >b && - git add b && - test_tick && - git commit -m "O" && - - git branch O && - git branch A && - git branch B && - - git checkout A && - test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b && - git add b && - test_tick && - git commit -m "A" && - - git checkout B && - test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b && - git add b && - test_tick && - git commit -m "B" - ) -} - -# NOTE: For as long as we continue using unpack_trees() without index_only -# set to true, it will error out on a case like this claiming that the locally -# modified file would be overwritten by the merge. Getting this testcase -# correct requires doing the merge in-memory first, then realizing that no -# updates to the file are necessary, and thus that we can just leave the path -# alone. -test_expect_failure '4a: Change on A, change on B subset of A, dirty mods present' ' - test_setup_4a && - ( - cd 4a && - - git checkout A^0 && - echo "File rewritten" >b && - - test-tool chmtime --get -3600 b >old-mtime && - - GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err && - - test_must_be_empty err && - - # Make sure b was NOT updated - test-tool chmtime --get b >new-mtime && - test_cmp old-mtime new-mtime && - - git ls-files -s >index_files && - test_line_count = 1 index_files && - - git rev-parse >actual :0:b && - git rev-parse >expect A:b && - test_cmp expect actual && - - git hash-object b >actual && - echo "File rewritten" | git hash-object --stdin >expect && - test_cmp expect actual - ) -' - -# Testcase 4b, Changed+renamed on A, subset of changes on B, locally modified -# Commit O: b_1 -# Commit A: c_2 -# Commit B: b_3 -# Working copy: c_4 -# Expected: c_2 - -test_setup_4b () { - test_create_repo 4b && - ( - cd 4b && - - test_write_lines 1 2 3 4 5 6 7 8 9 10 >b && - git add b && - test_tick && - git commit -m "O" && - - git branch O && - git branch A && - git branch B && - - git checkout A && - test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b && - git add b && - git mv b c && - test_tick && - git commit -m "A" && - - git checkout B && - test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b && - git add b && - test_tick && - git commit -m "B" - ) -} - -test_expect_success '4b: Rename+Mod(A)/Mod(B), change on B subset of A, dirty mods present' ' - test_setup_4b && - ( - cd 4b && - - git checkout A^0 && - echo "File rewritten" >c && - - test-tool chmtime --get -3600 c >old-mtime && - - GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err && - - test_must_be_empty err && - - # Make sure c was NOT updated - test-tool chmtime --get c >new-mtime && - test_cmp old-mtime new-mtime && - - git ls-files -s >index_files && - test_line_count = 1 index_files && - - git rev-parse >actual :0:c && - git rev-parse >expect A:c && - test_cmp expect actual && - - git hash-object c >actual && - echo "File rewritten" | git hash-object --stdin >expect && - test_cmp expect actual && - - test_must_fail git rev-parse HEAD:b && - test_path_is_missing b - ) -' - -test_done |