4f4180624c
Reviewed-by: Stefan Beller <sbeller@google.com> Signed-off-by: Elijah Newren <newren@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
1520 lines
36 KiB
Bash
Executable File
1520 lines
36 KiB
Bash
Executable File
#!/bin/sh
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test_description="recursive merge with directory renames"
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# includes checking of many corner cases, with a similar methodology to:
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# t6042: corner cases with renames but not criss-cross merges
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# t6036: corner cases with both renames and criss-cross merges
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#
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# The setup for all of them, pictorially, is:
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#
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# A
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# o
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# / \
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# O o ?
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# \ /
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# o
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# B
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#
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# To help make it easier to follow the flow of tests, they have been
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# divided into sections and each test will start with a quick explanation
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# of what commits O, A, and B contain.
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#
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# Notation:
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# z/{b,c} means files z/b and z/c both exist
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# x/d_1 means file x/d exists with content d1. (Purpose of the
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# underscore notation is to differentiate different
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# files that might be renamed into each other's paths.)
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. ./test-lib.sh
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###########################################################################
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# SECTION 1: Basic cases we should be able to handle
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###########################################################################
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# Testcase 1a, Basic directory rename.
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# Commit O: z/{b,c}
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# Commit A: y/{b,c}
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# Commit B: z/{b,c,d,e/f}
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# Expected: y/{b,c,d,e/f}
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test_expect_success '1a-setup: Simple directory rename detection' '
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test_create_repo 1a &&
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(
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cd 1a &&
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mkdir z &&
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echo b >z/b &&
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echo c >z/c &&
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git add z &&
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test_tick &&
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git commit -m "O" &&
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git branch O &&
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git branch A &&
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git branch B &&
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git checkout A &&
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git mv z y &&
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test_tick &&
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git commit -m "A" &&
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git checkout B &&
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echo d >z/d &&
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mkdir z/e &&
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echo f >z/e/f &&
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git add z/d z/e/f &&
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test_tick &&
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git commit -m "B"
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)
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'
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test_expect_failure '1a-check: Simple directory rename detection' '
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(
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cd 1a &&
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git checkout A^0 &&
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git merge -s recursive B^0 &&
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git ls-files -s >out &&
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test_line_count = 4 out &&
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git rev-parse >actual \
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HEAD:y/b HEAD:y/c HEAD:y/d HEAD:y/e/f &&
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git rev-parse >expect \
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O:z/b O:z/c B:z/d B:z/e/f &&
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test_cmp expect actual &&
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git hash-object y/d >actual &&
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git rev-parse B:z/d >expect &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:z/d &&
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test_must_fail git rev-parse HEAD:z/e/f &&
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test_path_is_missing z/d &&
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test_path_is_missing z/e/f
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)
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'
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# Testcase 1b, Merge a directory with another
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# Commit O: z/{b,c}, y/d
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# Commit A: z/{b,c,e}, y/d
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# Commit B: y/{b,c,d}
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# Expected: y/{b,c,d,e}
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test_expect_success '1b-setup: Merge a directory with another' '
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test_create_repo 1b &&
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(
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cd 1b &&
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mkdir z &&
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echo b >z/b &&
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echo c >z/c &&
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mkdir y &&
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echo d >y/d &&
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git add z y &&
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test_tick &&
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git commit -m "O" &&
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git branch O &&
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git branch A &&
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git branch B &&
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git checkout A &&
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echo e >z/e &&
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git add z/e &&
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test_tick &&
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git commit -m "A" &&
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git checkout B &&
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git mv z/b y &&
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git mv z/c y &&
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rmdir z &&
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test_tick &&
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git commit -m "B"
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)
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'
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test_expect_failure '1b-check: Merge a directory with another' '
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(
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cd 1b &&
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git checkout A^0 &&
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git merge -s recursive B^0 &&
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git ls-files -s >out &&
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test_line_count = 4 out &&
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git rev-parse >actual \
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HEAD:y/b HEAD:y/c HEAD:y/d HEAD:y/e &&
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git rev-parse >expect \
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O:z/b O:z/c O:y/d A:z/e &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:z/e
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)
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'
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# Testcase 1c, Transitive renaming
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# (Related to testcases 3a and 6d -- when should a transitive rename apply?)
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# (Related to testcases 9c and 9d -- can transitivity repeat?)
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# Commit O: z/{b,c}, x/d
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# Commit A: y/{b,c}, x/d
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# Commit B: z/{b,c,d}
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# Expected: y/{b,c,d} (because x/d -> z/d -> y/d)
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test_expect_success '1c-setup: Transitive renaming' '
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test_create_repo 1c &&
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(
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cd 1c &&
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mkdir z &&
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echo b >z/b &&
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echo c >z/c &&
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mkdir x &&
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echo d >x/d &&
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git add z x &&
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test_tick &&
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git commit -m "O" &&
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git branch O &&
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git branch A &&
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git branch B &&
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git checkout A &&
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git mv z y &&
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test_tick &&
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git commit -m "A" &&
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git checkout B &&
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git mv x/d z/d &&
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test_tick &&
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git commit -m "B"
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)
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'
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test_expect_failure '1c-check: Transitive renaming' '
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(
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cd 1c &&
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git checkout A^0 &&
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git merge -s recursive B^0 &&
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git ls-files -s >out &&
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test_line_count = 3 out &&
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git rev-parse >actual \
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HEAD:y/b HEAD:y/c HEAD:y/d &&
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git rev-parse >expect \
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O:z/b O:z/c O:x/d &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:x/d &&
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test_must_fail git rev-parse HEAD:z/d &&
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test_path_is_missing z/d
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)
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'
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# Testcase 1d, Directory renames (merging two directories into one new one)
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# cause a rename/rename(2to1) conflict
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# (Related to testcases 1c and 7b)
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# Commit O. z/{b,c}, y/{d,e}
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# Commit A. x/{b,c}, y/{d,e,m,wham_1}
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# Commit B. z/{b,c,n,wham_2}, x/{d,e}
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# Expected: x/{b,c,d,e,m,n}, CONFLICT:(y/wham_1 & z/wham_2 -> x/wham)
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# Note: y/m & z/n should definitely move into x. By the same token, both
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# y/wham_1 & z/wham_2 should too...giving us a conflict.
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test_expect_success '1d-setup: Directory renames cause a rename/rename(2to1) conflict' '
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test_create_repo 1d &&
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(
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cd 1d &&
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mkdir z &&
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echo b >z/b &&
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echo c >z/c &&
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mkdir y &&
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echo d >y/d &&
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echo e >y/e &&
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git add z y &&
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test_tick &&
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git commit -m "O" &&
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git branch O &&
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git branch A &&
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git branch B &&
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git checkout A &&
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git mv z x &&
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echo m >y/m &&
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echo wham1 >y/wham &&
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git add y &&
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test_tick &&
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git commit -m "A" &&
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git checkout B &&
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git mv y x &&
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echo n >z/n &&
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echo wham2 >z/wham &&
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git add z &&
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test_tick &&
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git commit -m "B"
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)
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'
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test_expect_failure '1d-check: Directory renames cause a rename/rename(2to1) conflict' '
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(
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cd 1d &&
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git checkout A^0 &&
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test_must_fail git merge -s recursive B^0 >out &&
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test_i18ngrep "CONFLICT (rename/rename)" out &&
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git ls-files -s >out &&
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test_line_count = 8 out &&
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git ls-files -u >out &&
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test_line_count = 2 out &&
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git ls-files -o >out &&
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test_line_count = 3 out &&
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git rev-parse >actual \
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:0:x/b :0:x/c :0:x/d :0:x/e :0:x/m :0:x/n &&
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git rev-parse >expect \
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O:z/b O:z/c O:y/d O:y/e A:y/m B:z/n &&
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test_cmp expect actual &&
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test_must_fail git rev-parse :0:x/wham &&
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git rev-parse >actual \
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:2:x/wham :3:x/wham &&
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git rev-parse >expect \
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A:y/wham B:z/wham &&
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test_cmp expect actual &&
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test_path_is_missing x/wham &&
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test_path_is_file x/wham~HEAD &&
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test_path_is_file x/wham~B^0 &&
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git hash-object >actual \
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x/wham~HEAD x/wham~B^0 &&
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git rev-parse >expect \
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A:y/wham B:z/wham &&
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test_cmp expect actual
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)
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'
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# Testcase 1e, Renamed directory, with all filenames being renamed too
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# Commit O: z/{oldb,oldc}
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# Commit A: y/{newb,newc}
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# Commit B: z/{oldb,oldc,d}
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# Expected: y/{newb,newc,d}
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test_expect_success '1e-setup: Renamed directory, with all files being renamed too' '
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test_create_repo 1e &&
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(
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cd 1e &&
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mkdir z &&
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echo b >z/oldb &&
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echo c >z/oldc &&
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git add z &&
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test_tick &&
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git commit -m "O" &&
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git branch O &&
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git branch A &&
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git branch B &&
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git checkout A &&
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mkdir y &&
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git mv z/oldb y/newb &&
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git mv z/oldc y/newc &&
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test_tick &&
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git commit -m "A" &&
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git checkout B &&
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echo d >z/d &&
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git add z/d &&
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test_tick &&
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git commit -m "B"
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)
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'
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test_expect_failure '1e-check: Renamed directory, with all files being renamed too' '
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(
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cd 1e &&
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git checkout A^0 &&
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git merge -s recursive B^0 &&
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git ls-files -s >out &&
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test_line_count = 3 out &&
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git rev-parse >actual \
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HEAD:y/newb HEAD:y/newc HEAD:y/d &&
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git rev-parse >expect \
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O:z/oldb O:z/oldc B:z/d &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:z/d
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)
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'
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# Testcase 1f, Split a directory into two other directories
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# (Related to testcases 3a, all of section 2, and all of section 4)
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# Commit O: z/{b,c,d,e,f}
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# Commit A: z/{b,c,d,e,f,g}
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# Commit B: y/{b,c}, x/{d,e,f}
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# Expected: y/{b,c}, x/{d,e,f,g}
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test_expect_success '1f-setup: Split a directory into two other directories' '
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test_create_repo 1f &&
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(
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cd 1f &&
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mkdir z &&
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echo b >z/b &&
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echo c >z/c &&
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echo d >z/d &&
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echo e >z/e &&
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echo f >z/f &&
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git add z &&
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test_tick &&
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git commit -m "O" &&
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git branch O &&
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git branch A &&
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git branch B &&
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git checkout A &&
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echo g >z/g &&
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git add z/g &&
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test_tick &&
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git commit -m "A" &&
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git checkout B &&
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mkdir y &&
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mkdir x &&
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git mv z/b y/ &&
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git mv z/c y/ &&
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git mv z/d x/ &&
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git mv z/e x/ &&
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git mv z/f x/ &&
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rmdir z &&
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test_tick &&
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git commit -m "B"
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)
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'
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test_expect_failure '1f-check: Split a directory into two other directories' '
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(
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cd 1f &&
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git checkout A^0 &&
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git merge -s recursive B^0 &&
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git ls-files -s >out &&
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test_line_count = 6 out &&
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git rev-parse >actual \
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HEAD:y/b HEAD:y/c HEAD:x/d HEAD:x/e HEAD:x/f HEAD:x/g &&
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git rev-parse >expect \
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O:z/b O:z/c O:z/d O:z/e O:z/f A:z/g &&
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test_cmp expect actual &&
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test_path_is_missing z/g &&
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test_must_fail git rev-parse HEAD:z/g
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)
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'
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###########################################################################
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# Rules suggested by testcases in section 1:
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#
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# We should still detect the directory rename even if it wasn't just
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# the directory renamed, but the files within it. (see 1b)
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#
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# If renames split a directory into two or more others, the directory
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# with the most renames, "wins" (see 1c). However, see the testcases
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# in section 2, plus testcases 3a and 4a.
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###########################################################################
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###########################################################################
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# SECTION 2: Split into multiple directories, with equal number of paths
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#
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# Explore the splitting-a-directory rules a bit; what happens in the
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# edge cases?
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#
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# Note that there is a closely related case of a directory not being
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# split on either side of history, but being renamed differently on
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# each side. See testcase 8e for that.
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###########################################################################
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# Testcase 2a, Directory split into two on one side, with equal numbers of paths
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# Commit O: z/{b,c}
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# Commit A: y/b, w/c
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# Commit B: z/{b,c,d}
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# Expected: y/b, w/c, z/d, with warning about z/ -> (y/ vs. w/) conflict
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test_expect_success '2a-setup: Directory split into two on one side, with equal numbers of paths' '
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test_create_repo 2a &&
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(
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cd 2a &&
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mkdir z &&
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echo b >z/b &&
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echo c >z/c &&
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git add z &&
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test_tick &&
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git commit -m "O" &&
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git branch O &&
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git branch A &&
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git branch B &&
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git checkout A &&
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mkdir y &&
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mkdir w &&
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git mv z/b y/ &&
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git mv z/c w/ &&
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test_tick &&
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git commit -m "A" &&
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git checkout B &&
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echo d >z/d &&
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git add z/d &&
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test_tick &&
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git commit -m "B"
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)
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'
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test_expect_failure '2a-check: Directory split into two on one side, with equal numbers of paths' '
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(
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cd 2a &&
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git checkout A^0 &&
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test_must_fail git merge -s recursive B^0 >out &&
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test_i18ngrep "CONFLICT.*directory rename split" out &&
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git ls-files -s >out &&
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test_line_count = 3 out &&
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git ls-files -u >out &&
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test_line_count = 0 out &&
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git ls-files -o >out &&
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test_line_count = 1 out &&
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git rev-parse >actual \
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:0:y/b :0:w/c :0:z/d &&
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git rev-parse >expect \
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O:z/b O:z/c B:z/d &&
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test_cmp expect actual
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)
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'
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# Testcase 2b, Directory split into two on one side, with equal numbers of paths
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# Commit O: z/{b,c}
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# Commit A: y/b, w/c
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# Commit B: z/{b,c}, x/d
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# Expected: y/b, w/c, x/d; No warning about z/ -> (y/ vs. w/) conflict
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test_expect_success '2b-setup: Directory split into two on one side, with equal numbers of paths' '
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test_create_repo 2b &&
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(
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cd 2b &&
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mkdir z &&
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echo b >z/b &&
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echo c >z/c &&
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git add z &&
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test_tick &&
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git commit -m "O" &&
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git branch O &&
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git branch A &&
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git branch B &&
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git checkout A &&
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mkdir y &&
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mkdir w &&
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git mv z/b y/ &&
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git mv z/c w/ &&
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test_tick &&
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git commit -m "A" &&
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git checkout B &&
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mkdir x &&
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echo d >x/d &&
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git add x/d &&
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test_tick &&
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git commit -m "B"
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)
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'
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test_expect_success '2b-check: Directory split into two on one side, with equal numbers of paths' '
|
|
(
|
|
cd 2b &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
git merge -s recursive B^0 >out &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 3 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 0 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
:0:y/b :0:w/c :0:x/d &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c B:x/d &&
|
|
test_cmp expect actual &&
|
|
test_i18ngrep ! "CONFLICT.*directory rename split" out
|
|
)
|
|
'
|
|
|
|
###########################################################################
|
|
# Rules suggested by section 2:
|
|
#
|
|
# None; the rule was already covered in section 1. These testcases are
|
|
# here just to make sure the conflict resolution and necessary warning
|
|
# messages are handled correctly.
|
|
###########################################################################
|
|
|
|
|
|
###########################################################################
|
|
# SECTION 3: Path in question is the source path for some rename already
|
|
#
|
|
# Combining cases from Section 1 and trying to handle them could lead to
|
|
# directory renaming detection being over-applied. So, this section
|
|
# provides some good testcases to check that the implementation doesn't go
|
|
# too far.
|
|
###########################################################################
|
|
|
|
# Testcase 3a, Avoid implicit rename if involved as source on other side
|
|
# (Related to testcases 1c and 1f)
|
|
# Commit O: z/{b,c,d}
|
|
# Commit A: z/{b,c,d} (no change)
|
|
# Commit B: y/{b,c}, x/d
|
|
# Expected: y/{b,c}, x/d
|
|
test_expect_success '3a-setup: Avoid implicit rename if involved as source on other side' '
|
|
test_create_repo 3a &&
|
|
(
|
|
cd 3a &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
echo d >z/d &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
test_tick &&
|
|
git commit --allow-empty -m "A" &&
|
|
|
|
git checkout B &&
|
|
mkdir y &&
|
|
mkdir x &&
|
|
git mv z/b y/ &&
|
|
git mv z/c y/ &&
|
|
git mv z/d x/ &&
|
|
rmdir z &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_success '3a-check: Avoid implicit rename if involved as source on other side' '
|
|
(
|
|
cd 3a &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
git merge -s recursive B^0 &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 3 out &&
|
|
|
|
git rev-parse >actual \
|
|
HEAD:y/b HEAD:y/c HEAD:x/d &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c O:z/d &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
# Testcase 3b, Avoid implicit rename if involved as source on other side
|
|
# (Related to testcases 5c and 7c, also kind of 1e and 1f)
|
|
# Commit O: z/{b,c,d}
|
|
# Commit A: y/{b,c}, x/d
|
|
# Commit B: z/{b,c}, w/d
|
|
# Expected: y/{b,c}, CONFLICT:(z/d -> x/d vs. w/d)
|
|
# NOTE: We're particularly checking that since z/d is already involved as
|
|
# a source in a file rename on the same side of history, that we don't
|
|
# get it involved in directory rename detection. If it were, we might
|
|
# end up with CONFLICT:(z/d -> y/d vs. x/d vs. w/d), i.e. a
|
|
# rename/rename/rename(1to3) conflict, which is just weird.
|
|
test_expect_success '3b-setup: Avoid implicit rename if involved as source on current side' '
|
|
test_create_repo 3b &&
|
|
(
|
|
cd 3b &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
echo d >z/d &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
mkdir y &&
|
|
mkdir x &&
|
|
git mv z/b y/ &&
|
|
git mv z/c y/ &&
|
|
git mv z/d x/ &&
|
|
rmdir z &&
|
|
test_tick &&
|
|
git commit -m "A" &&
|
|
|
|
git checkout B &&
|
|
mkdir w &&
|
|
git mv z/d w/ &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_success '3b-check: Avoid implicit rename if involved as source on current side' '
|
|
(
|
|
cd 3b &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
test_must_fail git merge -s recursive B^0 >out &&
|
|
test_i18ngrep CONFLICT.*rename/rename.*z/d.*x/d.*w/d out &&
|
|
test_i18ngrep ! CONFLICT.*rename/rename.*y/d out &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 5 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 3 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
:0:y/b :0:y/c :1:z/d :2:x/d :3:w/d &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c O:z/d O:z/d O:z/d &&
|
|
test_cmp expect actual &&
|
|
|
|
test_path_is_missing z/d &&
|
|
git hash-object >actual \
|
|
x/d w/d &&
|
|
git rev-parse >expect \
|
|
O:z/d O:z/d &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
###########################################################################
|
|
# Rules suggested by section 3:
|
|
#
|
|
# Avoid directory-rename-detection for a path, if that path is the source
|
|
# of a rename on either side of a merge.
|
|
###########################################################################
|
|
|
|
|
|
###########################################################################
|
|
# SECTION 4: Partially renamed directory; still exists on both sides of merge
|
|
#
|
|
# What if we were to attempt to do directory rename detection when someone
|
|
# "mostly" moved a directory but still left some files around, or,
|
|
# equivalently, fully renamed a directory in one commmit and then recreated
|
|
# that directory in a later commit adding some new files and then tried to
|
|
# merge?
|
|
#
|
|
# It's hard to divine user intent in these cases, because you can make an
|
|
# argument that, depending on the intermediate history of the side being
|
|
# merged, that some users will want files in that directory to
|
|
# automatically be detected and renamed, while users with a different
|
|
# intermediate history wouldn't want that rename to happen.
|
|
#
|
|
# I think that it is best to simply not have directory rename detection
|
|
# apply to such cases. My reasoning for this is four-fold: (1) it's
|
|
# easiest for users in general to figure out what happened if we don't
|
|
# apply directory rename detection in any such case, (2) it's an easy rule
|
|
# to explain ["We don't do directory rename detection if the directory
|
|
# still exists on both sides of the merge"], (3) we can get some hairy
|
|
# edge/corner cases that would be really confusing and possibly not even
|
|
# representable in the index if we were to even try, and [related to 3] (4)
|
|
# attempting to resolve this issue of divining user intent by examining
|
|
# intermediate history goes against the spirit of three-way merges and is a
|
|
# path towards crazy corner cases that are far more complex than what we're
|
|
# already dealing with.
|
|
#
|
|
# Note that the wording of the rule ("We don't do directory rename
|
|
# detection if the directory still exists on both sides of the merge.")
|
|
# also excludes "renaming" of a directory into a subdirectory of itself
|
|
# (e.g. /some/dir/* -> /some/dir/subdir/*). It may be possible to carve
|
|
# out an exception for "renaming"-beneath-itself cases without opening
|
|
# weird edge/corner cases for other partial directory renames, but for now
|
|
# we are keeping the rule simple.
|
|
#
|
|
# This section contains a test for a partially-renamed-directory case.
|
|
###########################################################################
|
|
|
|
# Testcase 4a, Directory split, with original directory still present
|
|
# (Related to testcase 1f)
|
|
# Commit O: z/{b,c,d,e}
|
|
# Commit A: y/{b,c,d}, z/e
|
|
# Commit B: z/{b,c,d,e,f}
|
|
# Expected: y/{b,c,d}, z/{e,f}
|
|
# NOTE: Even though most files from z moved to y, we don't want f to follow.
|
|
|
|
test_expect_success '4a-setup: Directory split, with original directory still present' '
|
|
test_create_repo 4a &&
|
|
(
|
|
cd 4a &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
echo d >z/d &&
|
|
echo e >z/e &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
mkdir y &&
|
|
git mv z/b y/ &&
|
|
git mv z/c y/ &&
|
|
git mv z/d y/ &&
|
|
test_tick &&
|
|
git commit -m "A" &&
|
|
|
|
git checkout B &&
|
|
echo f >z/f &&
|
|
git add z/f &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_success '4a-check: Directory split, with original directory still present' '
|
|
(
|
|
cd 4a &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
git merge -s recursive B^0 &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 5 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 0 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
HEAD:y/b HEAD:y/c HEAD:y/d HEAD:z/e HEAD:z/f &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c O:z/d O:z/e B:z/f &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
###########################################################################
|
|
# Rules suggested by section 4:
|
|
#
|
|
# Directory-rename-detection should be turned off for any directories (as
|
|
# a source for renames) that exist on both sides of the merge. (The "as
|
|
# a source for renames" clarification is due to cases like 1c where
|
|
# the target directory exists on both sides and we do want the rename
|
|
# detection.) But, sadly, see testcase 8b.
|
|
###########################################################################
|
|
|
|
|
|
###########################################################################
|
|
# SECTION 5: Files/directories in the way of subset of to-be-renamed paths
|
|
#
|
|
# Implicitly renaming files due to a detected directory rename could run
|
|
# into problems if there are files or directories in the way of the paths
|
|
# we want to rename. Explore such cases in this section.
|
|
###########################################################################
|
|
|
|
# Testcase 5a, Merge directories, other side adds files to original and target
|
|
# Commit O: z/{b,c}, y/d
|
|
# Commit A: z/{b,c,e_1,f}, y/{d,e_2}
|
|
# Commit B: y/{b,c,d}
|
|
# Expected: z/e_1, y/{b,c,d,e_2,f} + CONFLICT warning
|
|
# NOTE: While directory rename detection is active here causing z/f to
|
|
# become y/f, we did not apply this for z/e_1 because that would
|
|
# give us an add/add conflict for y/e_1 vs y/e_2. This problem with
|
|
# this add/add, is that both versions of y/e are from the same side
|
|
# of history, giving us no way to represent this conflict in the
|
|
# index.
|
|
|
|
test_expect_success '5a-setup: Merge directories, other side adds files to original and target' '
|
|
test_create_repo 5a &&
|
|
(
|
|
cd 5a &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
mkdir y &&
|
|
echo d >y/d &&
|
|
git add z y &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
echo e1 >z/e &&
|
|
echo f >z/f &&
|
|
echo e2 >y/e &&
|
|
git add z/e z/f y/e &&
|
|
test_tick &&
|
|
git commit -m "A" &&
|
|
|
|
git checkout B &&
|
|
git mv z/b y/ &&
|
|
git mv z/c y/ &&
|
|
rmdir z &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_failure '5a-check: Merge directories, other side adds files to original and target' '
|
|
(
|
|
cd 5a &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
test_must_fail git merge -s recursive B^0 >out &&
|
|
test_i18ngrep "CONFLICT.*implicit dir rename" out &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 6 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 0 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
:0:y/b :0:y/c :0:y/d :0:y/e :0:z/e :0:y/f &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c O:y/d A:y/e A:z/e A:z/f &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
# Testcase 5b, Rename/delete in order to get add/add/add conflict
|
|
# (Related to testcase 8d; these may appear slightly inconsistent to users;
|
|
# Also related to testcases 7d and 7e)
|
|
# Commit O: z/{b,c,d_1}
|
|
# Commit A: y/{b,c,d_2}
|
|
# Commit B: z/{b,c,d_1,e}, y/d_3
|
|
# Expected: y/{b,c,e}, CONFLICT(add/add: y/d_2 vs. y/d_3)
|
|
# NOTE: If z/d_1 in commit B were to be involved in dir rename detection, as
|
|
# we normaly would since z/ is being renamed to y/, then this would be
|
|
# a rename/delete (z/d_1 -> y/d_1 vs. deleted) AND an add/add/add
|
|
# conflict of y/d_1 vs. y/d_2 vs. y/d_3. Add/add/add is not
|
|
# representable in the index, so the existence of y/d_3 needs to
|
|
# cause us to bail on directory rename detection for that path, falling
|
|
# back to git behavior without the directory rename detection.
|
|
|
|
test_expect_success '5b-setup: Rename/delete in order to get add/add/add conflict' '
|
|
test_create_repo 5b &&
|
|
(
|
|
cd 5b &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
echo d1 >z/d &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
git rm z/d &&
|
|
git mv z y &&
|
|
echo d2 >y/d &&
|
|
git add y/d &&
|
|
test_tick &&
|
|
git commit -m "A" &&
|
|
|
|
git checkout B &&
|
|
mkdir y &&
|
|
echo d3 >y/d &&
|
|
echo e >z/e &&
|
|
git add y/d z/e &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_failure '5b-check: Rename/delete in order to get add/add/add conflict' '
|
|
(
|
|
cd 5b &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
test_must_fail git merge -s recursive B^0 >out &&
|
|
test_i18ngrep "CONFLICT (add/add).* y/d" out &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 5 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 2 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
:0:y/b :0:y/c :0:y/e :2:y/d :3:y/d &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c B:z/e A:y/d B:y/d &&
|
|
test_cmp expect actual &&
|
|
|
|
test_must_fail git rev-parse :1:y/d &&
|
|
test_path_is_file y/d
|
|
)
|
|
'
|
|
|
|
# Testcase 5c, Transitive rename would cause rename/rename/rename/add/add/add
|
|
# (Directory rename detection would result in transitive rename vs.
|
|
# rename/rename(1to2) and turn it into a rename/rename(1to3). Further,
|
|
# rename paths conflict with separate adds on the other side)
|
|
# (Related to testcases 3b and 7c)
|
|
# Commit O: z/{b,c}, x/d_1
|
|
# Commit A: y/{b,c,d_2}, w/d_1
|
|
# Commit B: z/{b,c,d_1,e}, w/d_3, y/d_4
|
|
# Expected: A mess, but only a rename/rename(1to2)/add/add mess. Use the
|
|
# presence of y/d_4 in B to avoid doing transitive rename of
|
|
# x/d_1 -> z/d_1 -> y/d_1, so that the only paths we have at
|
|
# y/d are y/d_2 and y/d_4. We still do the move from z/e to y/e,
|
|
# though, because it doesn't have anything in the way.
|
|
|
|
test_expect_success '5c-setup: Transitive rename would cause rename/rename/rename/add/add/add' '
|
|
test_create_repo 5c &&
|
|
(
|
|
cd 5c &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
mkdir x &&
|
|
echo d1 >x/d &&
|
|
git add z x &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
git mv z y &&
|
|
echo d2 >y/d &&
|
|
git add y/d &&
|
|
git mv x w &&
|
|
test_tick &&
|
|
git commit -m "A" &&
|
|
|
|
git checkout B &&
|
|
git mv x/d z/ &&
|
|
mkdir w &&
|
|
mkdir y &&
|
|
echo d3 >w/d &&
|
|
echo d4 >y/d &&
|
|
echo e >z/e &&
|
|
git add w/ y/ z/e &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_failure '5c-check: Transitive rename would cause rename/rename/rename/add/add/add' '
|
|
(
|
|
cd 5c &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
test_must_fail git merge -s recursive B^0 >out &&
|
|
test_i18ngrep "CONFLICT (rename/rename).*x/d.*w/d.*z/d" out &&
|
|
test_i18ngrep "CONFLICT (add/add).* y/d" out &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 9 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 6 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 3 out &&
|
|
|
|
git rev-parse >actual \
|
|
:0:y/b :0:y/c :0:y/e &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c B:z/e &&
|
|
test_cmp expect actual &&
|
|
|
|
test_must_fail git rev-parse :1:y/d &&
|
|
git rev-parse >actual \
|
|
:2:w/d :3:w/d :1:x/d :2:y/d :3:y/d :3:z/d &&
|
|
git rev-parse >expect \
|
|
O:x/d B:w/d O:x/d A:y/d B:y/d O:x/d &&
|
|
test_cmp expect actual &&
|
|
|
|
git hash-object >actual \
|
|
w/d~HEAD w/d~B^0 z/d &&
|
|
git rev-parse >expect \
|
|
O:x/d B:w/d O:x/d &&
|
|
test_cmp expect actual &&
|
|
test_path_is_missing x/d &&
|
|
test_path_is_file y/d &&
|
|
grep -q "<<<<" y/d # conflict markers should be present
|
|
)
|
|
'
|
|
|
|
# Testcase 5d, Directory/file/file conflict due to directory rename
|
|
# Commit O: z/{b,c}
|
|
# Commit A: y/{b,c,d_1}
|
|
# Commit B: z/{b,c,d_2,f}, y/d/e
|
|
# Expected: y/{b,c,d/e,f}, z/d_2, CONFLICT(file/directory), y/d_1~HEAD
|
|
# Note: The fact that y/d/ exists in B makes us bail on directory rename
|
|
# detection for z/d_2, but that doesn't prevent us from applying the
|
|
# directory rename detection for z/f -> y/f.
|
|
|
|
test_expect_success '5d-setup: Directory/file/file conflict due to directory rename' '
|
|
test_create_repo 5d &&
|
|
(
|
|
cd 5d &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
git mv z y &&
|
|
echo d1 >y/d &&
|
|
git add y/d &&
|
|
test_tick &&
|
|
git commit -m "A" &&
|
|
|
|
git checkout B &&
|
|
mkdir -p y/d &&
|
|
echo e >y/d/e &&
|
|
echo d2 >z/d &&
|
|
echo f >z/f &&
|
|
git add y/d/e z/d z/f &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_failure '5d-check: Directory/file/file conflict due to directory rename' '
|
|
(
|
|
cd 5d &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
test_must_fail git merge -s recursive B^0 >out &&
|
|
test_i18ngrep "CONFLICT (file/directory).*y/d" out &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 6 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 1 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 2 out &&
|
|
|
|
git rev-parse >actual \
|
|
:0:y/b :0:y/c :0:z/d :0:y/f :2:y/d :0:y/d/e &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c B:z/d B:z/f A:y/d B:y/d/e &&
|
|
test_cmp expect actual &&
|
|
|
|
git hash-object y/d~HEAD >actual &&
|
|
git rev-parse A:y/d >expect &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
###########################################################################
|
|
# Rules suggested by section 5:
|
|
#
|
|
# If a subset of to-be-renamed files have a file or directory in the way,
|
|
# "turn off" the directory rename for those specific sub-paths, falling
|
|
# back to old handling. But, sadly, see testcases 8a and 8b.
|
|
###########################################################################
|
|
|
|
|
|
###########################################################################
|
|
# SECTION 6: Same side of the merge was the one that did the rename
|
|
#
|
|
# It may sound obvious that you only want to apply implicit directory
|
|
# renames to directories if the _other_ side of history did the renaming.
|
|
# If you did make an implementation that didn't explicitly enforce this
|
|
# rule, the majority of cases that would fall under this section would
|
|
# also be solved by following the rules from the above sections. But
|
|
# there are still a few that stick out, so this section covers them just
|
|
# to make sure we also get them right.
|
|
###########################################################################
|
|
|
|
# Testcase 6a, Tricky rename/delete
|
|
# Commit O: z/{b,c,d}
|
|
# Commit A: z/b
|
|
# Commit B: y/{b,c}, z/d
|
|
# Expected: y/b, CONFLICT(rename/delete, z/c -> y/c vs. NULL)
|
|
# Note: We're just checking here that the rename of z/b and z/c to put
|
|
# them under y/ doesn't accidentally catch z/d and make it look like
|
|
# it is also involved in a rename/delete conflict.
|
|
|
|
test_expect_success '6a-setup: Tricky rename/delete' '
|
|
test_create_repo 6a &&
|
|
(
|
|
cd 6a &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
echo d >z/d &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
git rm z/c &&
|
|
git rm z/d &&
|
|
test_tick &&
|
|
git commit -m "A" &&
|
|
|
|
git checkout B &&
|
|
mkdir y &&
|
|
git mv z/b y/ &&
|
|
git mv z/c y/ &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_success '6a-check: Tricky rename/delete' '
|
|
(
|
|
cd 6a &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
test_must_fail git merge -s recursive B^0 >out &&
|
|
test_i18ngrep "CONFLICT (rename/delete).*z/c.*y/c" out &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 2 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 1 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
:0:y/b :3:y/c &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
# Testcase 6b, Same rename done on both sides
|
|
# (Related to testcases 6c and 8e)
|
|
# Commit O: z/{b,c}
|
|
# Commit A: y/{b,c}
|
|
# Commit B: y/{b,c}, z/d
|
|
# Expected: y/{b,c}, z/d
|
|
# Note: If we did directory rename detection here, we'd move z/d into y/,
|
|
# but B did that rename and still decided to put the file into z/,
|
|
# so we probably shouldn't apply directory rename detection for it.
|
|
|
|
test_expect_success '6b-setup: Same rename done on both sides' '
|
|
test_create_repo 6b &&
|
|
(
|
|
cd 6b &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
git mv z y &&
|
|
test_tick &&
|
|
git commit -m "A" &&
|
|
|
|
git checkout B &&
|
|
git mv z y &&
|
|
mkdir z &&
|
|
echo d >z/d &&
|
|
git add z/d &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_success '6b-check: Same rename done on both sides' '
|
|
(
|
|
cd 6b &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
git merge -s recursive B^0 &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 3 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 0 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
HEAD:y/b HEAD:y/c HEAD:z/d &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c B:z/d &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
# Testcase 6c, Rename only done on same side
|
|
# (Related to testcases 6b and 8e)
|
|
# Commit O: z/{b,c}
|
|
# Commit A: z/{b,c} (no change)
|
|
# Commit B: y/{b,c}, z/d
|
|
# Expected: y/{b,c}, z/d
|
|
# NOTE: Seems obvious, but just checking that the implementation doesn't
|
|
# "accidentally detect a rename" and give us y/{b,c,d}.
|
|
|
|
test_expect_success '6c-setup: Rename only done on same side' '
|
|
test_create_repo 6c &&
|
|
(
|
|
cd 6c &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
test_tick &&
|
|
git commit --allow-empty -m "A" &&
|
|
|
|
git checkout B &&
|
|
git mv z y &&
|
|
mkdir z &&
|
|
echo d >z/d &&
|
|
git add z/d &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_success '6c-check: Rename only done on same side' '
|
|
(
|
|
cd 6c &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
git merge -s recursive B^0 &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 3 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 0 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
HEAD:y/b HEAD:y/c HEAD:z/d &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c B:z/d &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
# Testcase 6d, We don't always want transitive renaming
|
|
# (Related to testcase 1c)
|
|
# Commit O: z/{b,c}, x/d
|
|
# Commit A: z/{b,c}, x/d (no change)
|
|
# Commit B: y/{b,c}, z/d
|
|
# Expected: y/{b,c}, z/d
|
|
# NOTE: Again, this seems obvious but just checking that the implementation
|
|
# doesn't "accidentally detect a rename" and give us y/{b,c,d}.
|
|
|
|
test_expect_success '6d-setup: We do not always want transitive renaming' '
|
|
test_create_repo 6d &&
|
|
(
|
|
cd 6d &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
mkdir x &&
|
|
echo d >x/d &&
|
|
git add z x &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
test_tick &&
|
|
git commit --allow-empty -m "A" &&
|
|
|
|
git checkout B &&
|
|
git mv z y &&
|
|
git mv x z &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_success '6d-check: We do not always want transitive renaming' '
|
|
(
|
|
cd 6d &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
git merge -s recursive B^0 &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 3 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 0 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
HEAD:y/b HEAD:y/c HEAD:z/d &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c O:x/d &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
# Testcase 6e, Add/add from one-side
|
|
# Commit O: z/{b,c}
|
|
# Commit A: z/{b,c} (no change)
|
|
# Commit B: y/{b,c,d_1}, z/d_2
|
|
# Expected: y/{b,c,d_1}, z/d_2
|
|
# NOTE: Again, this seems obvious but just checking that the implementation
|
|
# doesn't "accidentally detect a rename" and give us y/{b,c} +
|
|
# add/add conflict on y/d_1 vs y/d_2.
|
|
|
|
test_expect_success '6e-setup: Add/add from one side' '
|
|
test_create_repo 6e &&
|
|
(
|
|
cd 6e &&
|
|
|
|
mkdir z &&
|
|
echo b >z/b &&
|
|
echo c >z/c &&
|
|
git add z &&
|
|
test_tick &&
|
|
git commit -m "O" &&
|
|
|
|
git branch O &&
|
|
git branch A &&
|
|
git branch B &&
|
|
|
|
git checkout A &&
|
|
test_tick &&
|
|
git commit --allow-empty -m "A" &&
|
|
|
|
git checkout B &&
|
|
git mv z y &&
|
|
echo d1 > y/d &&
|
|
mkdir z &&
|
|
echo d2 > z/d &&
|
|
git add y/d z/d &&
|
|
test_tick &&
|
|
git commit -m "B"
|
|
)
|
|
'
|
|
|
|
test_expect_success '6e-check: Add/add from one side' '
|
|
(
|
|
cd 6e &&
|
|
|
|
git checkout A^0 &&
|
|
|
|
git merge -s recursive B^0 &&
|
|
|
|
git ls-files -s >out &&
|
|
test_line_count = 4 out &&
|
|
git ls-files -u >out &&
|
|
test_line_count = 0 out &&
|
|
git ls-files -o >out &&
|
|
test_line_count = 1 out &&
|
|
|
|
git rev-parse >actual \
|
|
HEAD:y/b HEAD:y/c HEAD:y/d HEAD:z/d &&
|
|
git rev-parse >expect \
|
|
O:z/b O:z/c B:y/d B:z/d &&
|
|
test_cmp expect actual
|
|
)
|
|
'
|
|
|
|
###########################################################################
|
|
# Rules suggested by section 6:
|
|
#
|
|
# Only apply implicit directory renames to directories if the other
|
|
# side of history is the one doing the renaming.
|
|
###########################################################################
|
|
|
|
test_done
|