From: Elijah Newren <newren@gmail.com>
To: git@vger.kernel.org
Cc: gitster@pobox.com, Elijah Newren <newren@gmail.com>
Subject: [PATCH v3 09/33] directory rename detection: testcases checking which side did the rename
Date: Tue, 21 Nov 2017 00:00:35 -0800 [thread overview]
Message-ID: <20171121080059.32304-10-newren@gmail.com> (raw)
In-Reply-To: <20171121080059.32304-1-newren@gmail.com>
Signed-off-by: Elijah Newren <newren@gmail.com>
---
t/t6043-merge-rename-directories.sh | 321 ++++++++++++++++++++++++++++++++++++
1 file changed, 321 insertions(+)
diff --git a/t/t6043-merge-rename-directories.sh b/t/t6043-merge-rename-directories.sh
index 29b2af7f19..5db2986de8 100755
--- a/t/t6043-merge-rename-directories.sh
+++ b/t/t6043-merge-rename-directories.sh
@@ -1138,4 +1138,325 @@ test_expect_failure '5d-check: Directory/file/file conflict due to directory ren
# 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 &&
+
+ test 2 -eq $(git ls-files -s | wc -l) &&
+ test 1 -eq $(git ls-files -u | wc -l) &&
+ test 1 -eq $(git ls-files -o | wc -l) &&
+
+ 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 &&
+
+ test 3 -eq $(git ls-files -s | wc -l) &&
+ test 0 -eq $(git ls-files -u | wc -l) &&
+ test 0 -eq $(git ls-files -o | wc -l) &&
+
+ 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 &&
+
+ test 3 -eq $(git ls-files -s | wc -l) &&
+ test 0 -eq $(git ls-files -u | wc -l) &&
+ test 0 -eq $(git ls-files -o | wc -l) &&
+
+ 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 &&
+
+ test 3 -eq $(git ls-files -s | wc -l) &&
+ test 0 -eq $(git ls-files -u | wc -l) &&
+ test 0 -eq $(git ls-files -o | wc -l) &&
+
+ 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 &&
+
+ test 4 -eq $(git ls-files -s | wc -l) &&
+ test 0 -eq $(git ls-files -u | wc -l) &&
+ test 0 -eq $(git ls-files -o | wc -l) &&
+
+ 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
--
2.15.0.309.g62ce55426d
next prev parent reply other threads:[~2017-11-21 8:02 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-21 8:00 [PATCH v3 00/33] Add directory rename detection to git Elijah Newren
2017-11-21 8:00 ` [PATCH v3 01/33] Tighten and correct a few testcases for merging and cherry-picking Elijah Newren
2017-11-21 8:00 ` [PATCH v3 02/33] merge-recursive: fix logic ordering issue Elijah Newren
2017-11-21 8:00 ` [PATCH v3 03/33] merge-recursive: add explanation for src_entry and dst_entry Elijah Newren
2017-11-21 8:00 ` [PATCH v3 04/33] directory rename detection: basic testcases Elijah Newren
2017-11-21 8:00 ` [PATCH v3 05/33] directory rename detection: directory splitting testcases Elijah Newren
2017-11-21 8:00 ` [PATCH v3 06/33] directory rename detection: testcases to avoid taking detection too far Elijah Newren
2017-11-21 8:00 ` [PATCH v3 07/33] directory rename detection: partially renamed directory testcase/discussion Elijah Newren
2017-11-21 8:00 ` [PATCH v3 08/33] directory rename detection: files/directories in the way of some renames Elijah Newren
2017-11-21 8:00 ` Elijah Newren [this message]
2017-11-21 8:00 ` [PATCH v3 10/33] directory rename detection: more involved edge/corner testcases Elijah Newren
2017-11-21 8:00 ` [PATCH v3 11/33] directory rename detection: testcases exploring possibly suboptimal merges Elijah Newren
2017-11-22 18:29 ` Stefan Beller
2017-11-21 8:00 ` [PATCH v3 12/33] directory rename detection: miscellaneous testcases to complete coverage Elijah Newren
2017-11-21 8:00 ` [PATCH v3 13/33] directory rename detection: tests for handling overwriting untracked files Elijah Newren
2017-11-21 8:00 ` [PATCH v3 14/33] directory rename detection: tests for handling overwriting dirty files Elijah Newren
2017-11-21 8:00 ` [PATCH v3 15/33] merge-recursive: move the get_renames() function Elijah Newren
2017-11-21 8:00 ` [PATCH v3 16/33] merge-recursive: introduce new functions to handle rename logic Elijah Newren
2017-11-21 8:00 ` [PATCH v3 17/33] merge-recursive: fix leaks of allocated renames and diff_filepairs Elijah Newren
2017-11-21 8:00 ` [PATCH v3 18/33] merge-recursive: make !o->detect_rename codepath more obvious Elijah Newren
2017-11-21 8:00 ` [PATCH v3 19/33] merge-recursive: split out code for determining diff_filepairs Elijah Newren
2017-11-21 8:00 ` [PATCH v3 20/33] merge-recursive: add a new hashmap for storing directory renames Elijah Newren
2017-11-21 8:00 ` [PATCH v3 21/33] merge-recursive: add get_directory_renames() Elijah Newren
2017-11-26 0:52 ` Johannes Schindelin
2017-11-26 1:45 ` Elijah Newren
2017-11-21 8:00 ` [PATCH v3 22/33] merge-recursive: check for directory level conflicts Elijah Newren
2017-11-22 18:36 ` Stefan Beller
2017-11-21 8:00 ` [PATCH v3 23/33] merge-recursive: add a new hashmap for storing file collisions Elijah Newren
2017-11-21 8:00 ` [PATCH v3 24/33] merge-recursive: add computation of collisions due to dir rename & merging Elijah Newren
2017-11-21 8:00 ` [PATCH v3 25/33] merge-recursive: check for file level conflicts then get new name Elijah Newren
2017-11-22 18:56 ` Stefan Beller
2017-11-21 8:00 ` [PATCH v3 26/33] merge-recursive: when comparing files, don't include trees Elijah Newren
2017-11-21 8:00 ` [PATCH v3 27/33] merge-recursive: apply necessary modifications for directory renames Elijah Newren
2017-11-21 8:00 ` [PATCH v3 28/33] merge-recursive: avoid clobbering untracked files with " Elijah Newren
2017-11-21 8:00 ` [PATCH v3 29/33] merge-recursive: fix overwriting dirty files involved in renames Elijah Newren
2017-11-21 8:00 ` [PATCH v3 30/33] merge-recursive: fix remaining directory rename + dirty overwrite cases Elijah Newren
2017-11-21 8:00 ` [PATCH v3 31/33] directory rename detection: new testcases showcasing a pair of bugs Elijah Newren
2017-11-21 8:00 ` [PATCH v3 32/33] merge-recursive: avoid spurious rename/rename conflict from dir renames Elijah Newren
2017-11-21 8:00 ` [PATCH v3 33/33] merge-recursive: ensure we write updates for directory-renamed file Elijah Newren
2017-11-22 0:42 ` [PATCH v3 00/33] Add directory rename detection to git Stefan Beller
2017-11-22 1:12 ` Elijah Newren
2017-11-22 2:44 ` Junio C Hamano
2017-11-22 19:24 ` Stefan Beller
2017-11-23 6:22 ` Elijah Newren
2017-11-23 11:52 ` Adam Dinwoodie
2017-11-23 22:28 ` Elijah Newren
2017-11-24 5:25 ` Elijah Newren
2017-11-24 20:07 ` Elijah Newren
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