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45a2686441
Remove the optional "diagnostics" parameter of the
test_path_is_{file,dir,missing} functions.
We have a lot of uses of these functions, but the only legitimate use
of the diagnostics parameter is from when the functions themselves
were introduced in 2caf20c52b (test-lib: user-friendly alternatives
to test [-d|-f|-e], 2010-08-10).
But as the the rest of this diff demonstrates its presence did more to
silently introduce bugs in our tests. Fix such bugs in the tests added
in ae4e89e549 (gc: add --keep-largest-pack option, 2018-04-15), and
c04ba51739 (t6046: testcases checking whether updates can be skipped
in a merge, 2018-04-19).
Let's also assert that those functions are called with exactly one
parameter, a follow-up commit will add similar asserts to other
functions in test-lib-functions.sh that we didn't have existing misuse
of.
Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
779 lines
18 KiB
Bash
Executable file
779 lines
18 KiB
Bash
Executable file
#!/bin/sh
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test_description="merge cases"
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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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. "$TEST_DIRECTORY"/lib-merge.sh
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###########################################################################
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# SECTION 1: Cases involving no renames (one side has subset of changes of
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# the other side)
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###########################################################################
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# Testcase 1a, Changes on A, subset of changes on B
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# Commit O: b_1
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# Commit A: b_2
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# Commit B: b_3
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# Expected: b_2
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test_setup_1a () {
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test_create_repo 1a_$1 &&
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(
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cd 1a_$1 &&
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test_write_lines 1 2 3 4 5 6 7 8 9 10 >b &&
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git add b &&
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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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test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b &&
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git add b &&
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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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test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b &&
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git add b &&
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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 '1a-L: Modify(A)/Modify(B), change on B subset of A' '
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test_setup_1a L &&
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(
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cd 1a_L &&
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git checkout A^0 &&
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test-tool chmtime --get -3600 b >old-mtime &&
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GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
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test_must_be_empty err &&
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# Make sure b was NOT updated
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test-tool chmtime --get b >new-mtime &&
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test_cmp old-mtime new-mtime &&
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git ls-files -s >index_files &&
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test_line_count = 1 index_files &&
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git rev-parse >actual HEAD:b &&
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git rev-parse >expect A:b &&
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test_cmp expect actual &&
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git hash-object b >actual &&
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git rev-parse A:b >expect &&
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test_cmp expect actual
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)
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'
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test_expect_success '1a-R: Modify(A)/Modify(B), change on B subset of A' '
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test_setup_1a R &&
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(
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cd 1a_R &&
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git checkout B^0 &&
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test-tool chmtime --get -3600 b >old-mtime &&
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GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err &&
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# Make sure b WAS updated
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test-tool chmtime --get b >new-mtime &&
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test $(cat old-mtime) -lt $(cat new-mtime) &&
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test_must_be_empty err &&
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git ls-files -s >index_files &&
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test_line_count = 1 index_files &&
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git rev-parse >actual HEAD:b &&
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git rev-parse >expect A:b &&
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test_cmp expect actual &&
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git hash-object b >actual &&
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git rev-parse A:b >expect &&
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test_cmp expect actual
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)
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'
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###########################################################################
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# SECTION 2: Cases involving basic renames
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###########################################################################
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# Testcase 2a, Changes on A, rename on B
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# Commit O: b_1
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# Commit A: b_2
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# Commit B: c_1
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# Expected: c_2
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test_setup_2a () {
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test_create_repo 2a_$1 &&
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(
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cd 2a_$1 &&
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test_seq 1 10 >b &&
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git add b &&
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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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test_seq 1 11 >b &&
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git add b &&
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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 b c &&
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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 '2a-L: Modify/rename, merge into modify side' '
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test_setup_2a L &&
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(
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cd 2a_L &&
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git checkout A^0 &&
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test_path_is_missing c &&
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GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
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test_path_is_file c &&
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git ls-files -s >index_files &&
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test_line_count = 1 index_files &&
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git rev-parse >actual HEAD:c &&
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git rev-parse >expect A:b &&
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test_cmp expect actual &&
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git hash-object c >actual &&
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git rev-parse A:b >expect &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:b &&
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test_path_is_missing b
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)
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'
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test_expect_success '2a-R: Modify/rename, merge into rename side' '
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test_setup_2a R &&
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(
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cd 2a_R &&
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git checkout B^0 &&
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test-tool chmtime --get -3600 c >old-mtime &&
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GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err &&
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# Make sure c WAS updated
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test-tool chmtime --get c >new-mtime &&
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test $(cat old-mtime) -lt $(cat new-mtime) &&
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test_must_be_empty err &&
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git ls-files -s >index_files &&
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test_line_count = 1 index_files &&
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git rev-parse >actual HEAD:c &&
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git rev-parse >expect A:b &&
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test_cmp expect actual &&
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git hash-object c >actual &&
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git rev-parse A:b >expect &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:b &&
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test_path_is_missing b
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)
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'
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# Testcase 2b, Changed and renamed on A, subset of changes on B
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# Commit O: b_1
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# Commit A: c_2
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# Commit B: b_3
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# Expected: c_2
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test_setup_2b () {
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test_create_repo 2b_$1 &&
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(
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cd 2b_$1 &&
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test_write_lines 1 2 3 4 5 6 7 8 9 10 >b &&
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git add b &&
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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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test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 10.5 >b &&
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git add b &&
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git mv b c &&
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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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test_write_lines 1 2 3 4 5 5.5 6 7 8 9 10 >b &&
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git add b &&
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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-L: Rename+Mod(A)/Mod(B), B mods subset of A' '
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test_setup_2b L &&
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(
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cd 2b_L &&
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git checkout A^0 &&
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test-tool chmtime --get -3600 c >old-mtime &&
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GIT_MERGE_VERBOSITY=3 git merge -s recursive B^0 >out 2>err &&
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test_must_be_empty err &&
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# Make sure c WAS updated
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test-tool chmtime --get c >new-mtime &&
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test_cmp old-mtime new-mtime &&
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git ls-files -s >index_files &&
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test_line_count = 1 index_files &&
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git rev-parse >actual HEAD:c &&
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git rev-parse >expect A:c &&
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test_cmp expect actual &&
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git hash-object c >actual &&
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git rev-parse A:c >expect &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:b &&
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test_path_is_missing b
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)
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'
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test_expect_success '2b-R: Rename+Mod(A)/Mod(B), B mods subset of A' '
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test_setup_2b R &&
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(
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cd 2b_R &&
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git checkout B^0 &&
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test_path_is_missing c &&
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GIT_MERGE_VERBOSITY=3 git merge -s recursive A^0 >out 2>err &&
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# Make sure c now present (and thus was updated)
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test_path_is_file c &&
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test_must_be_empty err &&
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git ls-files -s >index_files &&
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test_line_count = 1 index_files &&
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git rev-parse >actual HEAD:c &&
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git rev-parse >expect A:c &&
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test_cmp expect actual &&
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git hash-object c >actual &&
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git rev-parse A:c >expect &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:b &&
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test_path_is_missing b
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)
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'
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# Testcase 2c, Changes on A, rename on B
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# Commit O: b_1
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# Commit A: b_2, c_3
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# Commit B: c_1
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# Expected: rename/add conflict c_2 vs c_3
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#
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# NOTE: Since A modified b_1->b_2, and B renamed b_1->c_1, the threeway
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# merge of those files should result in c_2. We then should have a
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# rename/add conflict between c_2 and c_3. However, if we note in
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# merge_content() that A had the right contents (b_2 has same
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# contents as c_2, just at a different name), and that A had the
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# right path present (c_3 existed) and thus decides that it can
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# skip the update, then we're in trouble. This test verifies we do
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# not make that particular mistake.
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test_setup_2c () {
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test_create_repo 2c &&
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(
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cd 2c &&
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test_seq 1 10 >b &&
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git add b &&
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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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test_seq 1 11 >b &&
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echo whatever >c &&
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git add b c &&
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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 b c &&
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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 '2c: Modify b & add c VS rename b->c' '
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test_setup_2c &&
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(
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cd 2c &&
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git checkout A^0 &&
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test-tool chmtime --get -3600 c >old-mtime &&
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GIT_MERGE_VERBOSITY=3 &&
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export GIT_MERGE_VERBOSITY &&
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test_must_fail git merge -s recursive B^0 >out 2>err &&
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test_i18ngrep "CONFLICT (.*/add):" out &&
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test_must_be_empty err &&
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# Make sure c WAS updated
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test-tool chmtime --get c >new-mtime &&
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test $(cat old-mtime) -lt $(cat new-mtime)
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# FIXME: rename/add conflicts are horribly broken right now;
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# when I get back to my patch series fixing it and
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# rename/rename(2to1) conflicts to bring them in line with
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# how add/add conflicts behave, then checks like the below
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# could be added. But that patch series is waiting until
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# the rename-directory-detection series lands, which this
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# is part of. And in the mean time, I do not want to further
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# enforce broken behavior. So for now, the main test is the
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# one above that err is an empty file.
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#git ls-files -s >index_files &&
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#test_line_count = 2 index_files &&
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#git rev-parse >actual :2:c :3:c &&
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#git rev-parse >expect A:b A:c &&
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#test_cmp expect actual &&
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#git cat-file -p A:b >>merged &&
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#git cat-file -p A:c >>merge-me &&
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#>empty &&
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#test_must_fail git merge-file \
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# -L "Temporary merge branch 1" \
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# -L "" \
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# -L "Temporary merge branch 2" \
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# merged empty merge-me &&
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#sed -e "s/^\([<=>]\)/\1\1\1/" merged >merged-internal &&
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#git hash-object c >actual &&
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#git hash-object merged-internal >expect &&
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#test_cmp expect actual &&
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#test_path_is_missing b
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)
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'
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###########################################################################
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# SECTION 3: Cases involving directory renames
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#
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# NOTE:
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# Directory renames only apply when one side renames a directory, and the
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# other side adds or renames a path into that directory. Applying the
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# directory rename to that new path creates a new pathname that didn't
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# exist on either side of history. Thus, it is impossible for the
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# merge contents to already be at the right path, so all of these checks
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# exist just to make sure that updates are not skipped.
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###########################################################################
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# Testcase 3a, Change + rename into dir foo on A, dir rename foo->bar on B
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# Commit O: bq_1, foo/whatever
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# Commit A: foo/{bq_2, whatever}
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# Commit B: bq_1, bar/whatever
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# Expected: bar/{bq_2, whatever}
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test_setup_3a () {
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test_create_repo 3a_$1 &&
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(
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cd 3a_$1 &&
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mkdir foo &&
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test_seq 1 10 >bq &&
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test_write_lines a b c d e f g h i j k >foo/whatever &&
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git add bq foo/whatever &&
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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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test_seq 1 11 >bq &&
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git add bq &&
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git mv bq foo/ &&
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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 foo/ bar/ &&
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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 '3a-L: bq_1->foo/bq_2 on A, foo/->bar/ on B' '
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test_setup_3a L &&
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(
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cd 3a_L &&
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git checkout A^0 &&
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test_path_is_missing bar/bq &&
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GIT_MERGE_VERBOSITY=3 git -c merge.directoryRenames=true merge -s recursive B^0 >out 2>err &&
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test_must_be_empty err &&
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test_path_is_file bar/bq &&
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git ls-files -s >index_files &&
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test_line_count = 2 index_files &&
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git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever &&
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git rev-parse >expect A:foo/bq A:foo/whatever &&
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test_cmp expect actual &&
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git hash-object bar/bq bar/whatever >actual &&
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git rev-parse A:foo/bq A:foo/whatever >expect &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:bq HEAD:foo/bq &&
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test_path_is_missing bq &&
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test_path_is_missing foo/bq &&
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test_path_is_missing foo/whatever
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)
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'
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test_expect_success '3a-R: bq_1->foo/bq_2 on A, foo/->bar/ on B' '
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test_setup_3a R &&
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(
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cd 3a_R &&
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git checkout B^0 &&
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test_path_is_missing bar/bq &&
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GIT_MERGE_VERBOSITY=3 git -c merge.directoryRenames=true merge -s recursive A^0 >out 2>err &&
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test_must_be_empty err &&
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test_path_is_file bar/bq &&
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git ls-files -s >index_files &&
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test_line_count = 2 index_files &&
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git rev-parse >actual HEAD:bar/bq HEAD:bar/whatever &&
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git rev-parse >expect A:foo/bq A:foo/whatever &&
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test_cmp expect actual &&
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git hash-object bar/bq bar/whatever >actual &&
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git rev-parse A:foo/bq A:foo/whatever >expect &&
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test_cmp expect actual &&
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test_must_fail git rev-parse HEAD:bq HEAD:foo/bq &&
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test_path_is_missing bq &&
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test_path_is_missing foo/bq &&
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test_path_is_missing foo/whatever
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)
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'
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# Testcase 3b, rename into dir foo on A, dir rename foo->bar + change on B
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# 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 &&
|
|
test_path_is_missing foo/bq &&
|
|
test_path_is_missing 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 &&
|
|
test_path_is_missing foo/bq &&
|
|
test_path_is_missing 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_merge_algorithm failure success '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
|