From patchwork Sun Oct 14 02:05:31 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Elijah Newren X-Patchwork-Id: 10640481 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6C0BC15E2 for ; Sun, 14 Oct 2018 02:06:18 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5D2D72A743 for ; Sun, 14 Oct 2018 02:06:18 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50EF62A747; Sun, 14 Oct 2018 02:06:18 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C17AC2A744 for ; Sun, 14 Oct 2018 02:06:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725999AbeJNJpH (ORCPT ); Sun, 14 Oct 2018 05:45:07 -0400 Received: from mx0a-00153501.pphosted.com ([67.231.148.48]:58036 "EHLO mx0a-00153501.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725762AbeJNJpH (ORCPT ); Sun, 14 Oct 2018 05:45:07 -0400 Received: from pps.filterd (m0096528.ppops.net [127.0.0.1]) by mx0a-00153501.pphosted.com (8.16.0.23/8.16.0.23) with SMTP id w9E23NZB024629; Sat, 13 Oct 2018 19:05:48 -0700 Received: from mail.palantir.com ([8.4.231.70]) by mx0a-00153501.pphosted.com with ESMTP id 2n3dkjgs4c-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128 verify=OK); Sat, 13 Oct 2018 19:05:48 -0700 Received: from sj-prod-exch-01.YOJOE.local (10.129.18.26) by sj-prod-exch-01.YOJOE.local (10.129.18.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.1531.3; Sat, 13 Oct 2018 19:05:47 -0700 Received: from EX02-WEST.YOJOE.local (10.160.10.131) by sj-prod-exch-01.YOJOE.local (10.129.18.26) with Microsoft SMTP Server (version=TLS1_0, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.1.1531.3 via Frontend Transport; Sat, 13 Oct 2018 19:05:47 -0700 Received: from smtp-transport.yojoe.local (10.129.56.124) by EX02-WEST.YOJOE.local (10.160.10.131) with Microsoft SMTP Server id 14.3.319.2; Sat, 13 Oct 2018 19:05:45 -0700 Received: from newren2-linux.yojoe.local (newren2-linux.pa.palantir.tech [10.100.71.66]) by smtp-transport.yojoe.local (Postfix) with ESMTPS id DD49E2101E7C; Sat, 13 Oct 2018 19:05:45 -0700 (PDT) From: Elijah Newren To: CC: Elijah Newren Subject: [RFC PATCH v2 1/7] Add testcases for consistency in file collision conflict handling Date: Sat, 13 Oct 2018 19:05:31 -0700 Message-ID: <20181014020537.17991-2-newren@gmail.com> X-Mailer: git-send-email 2.19.0.3.g98f21ceff2.dirty In-Reply-To: <20181014020537.17991-1-newren@gmail.com> References: <20181014020537.17991-1-newren@gmail.com> MIME-Version: 1.0 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-10-14_01:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=4 phishscore=0 bulkscore=0 spamscore=0 clxscore=1034 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1807170000 definitions=main-1810140017 Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add testcases dealing with file collisions for the following types of conflicts: * add/add * rename/add * rename/rename(2to1) All these conflict types simplify down to two files "colliding" and should thus be handled similarly. This means that rename/add and rename/rename(2to1) conflicts need to be modified to behave the same as add/add conflicts currently do: the colliding files should be two-way merged (instead of the current behavior of writing the two colliding files out to separate temporary unique pathnames). Add testcases which check this; subsequent commits will fix the conflict handling to make these tests pass. Signed-off-by: Elijah Newren --- t/t6042-merge-rename-corner-cases.sh | 162 +++++++++++++++++++++++++++ 1 file changed, 162 insertions(+) diff --git a/t/t6042-merge-rename-corner-cases.sh b/t/t6042-merge-rename-corner-cases.sh index b97aca7fa2..b6fed2cb9a 100755 --- a/t/t6042-merge-rename-corner-cases.sh +++ b/t/t6042-merge-rename-corner-cases.sh @@ -937,4 +937,166 @@ test_expect_failure 'mod6-check: chains of rename/rename(1to2) and rename/rename ) ' +test_conflicts_with_adds_and_renames() { + sideL=$1 + sideR=$2 + expect=$3 + + # Setup: + # L + # / \ + # master ? + # \ / + # R + # + # Where: + # Both L and R have files named 'three' which collide. Each of + # the colliding files could have been involved in a rename, in + # which case there was a file named 'one' or 'two' that was + # modified on the opposite side of history and renamed into the + # collision on this side of history. + # + # Questions: + # 1) The index should contain both a stage 2 and stage 3 entry + # for the colliding file. Does it? + # 2) When renames are involved, the content merges are clean, so + # the index should reflect the content merges, not merely the + # version of the colliding file from the prior commit. Does + # it? + # 3) There should be a file in the worktree named 'three' + # containing the two-way merged contents of the content-merged + # versions of 'three' from each of the two colliding + # files. Is it present? + # 4) There should not be any three~* files in the working + # tree + test_expect_success "setup simple $sideL/$sideR conflict" ' + test_create_repo simple_${sideL}_${sideR} && + ( + cd simple_${sideL}_${sideR} && + + # Create some related files now + for i in $(test_seq 1 10) + do + echo Random base content line $i + done >file_v1 && + cp file_v1 file_v2 && + echo modification >>file_v2 && + + cp file_v1 file_v3 && + echo more stuff >>file_v3 && + cp file_v3 file_v4 && + echo yet more stuff >>file_v4 && + + # Use a tag to record both these files for simple + # access, and clean out these untracked files + git tag file_v1 $(git hash-object -w file_v1) && + git tag file_v2 $(git hash-object -w file_v2) && + git tag file_v3 $(git hash-object -w file_v3) && + git tag file_v4 $(git hash-object -w file_v4) && + git clean -f && + + # Setup original commit (or merge-base), consisting of + # files named "one" and "two" if renames were involved. + touch irrelevant_file && + git add irrelevant_file && + if [ $sideL = "rename" ] + then + git show file_v1 >one && + git add one + fi && + if [ $sideR = "rename" ] + then + git show file_v3 >two && + git add two + fi && + test_tick && git commit -m initial && + + git branch L && + git branch R && + + # Handle the left side + git checkout L && + if [ $sideL = "rename" ] + then + git mv one three + else + git show file_v2 >three && + git add three + fi && + if [ $sideR = "rename" ] + then + git show file_v4 >two && + git add two + fi && + test_tick && git commit -m L && + + # Handle the right side + git checkout R && + if [ $sideL = "rename" ] + then + git show file_v2 >one && + git add one + fi && + if [ $sideR = "rename" ] + then + git mv two three + else + git show file_v4 >three && + git add three + fi && + test_tick && git commit -m R + ) + ' + + test_expect_$expect "check simple $sideL/$sideR conflict" ' + ( + cd simple_${sideL}_${sideR} && + + git checkout L^0 && + + # Merge must fail; there is a conflict + test_must_fail git merge -s recursive R^0 && + + # Make sure the index has the right number of entries + git ls-files -s >out && + test_line_count = 3 out && + git ls-files -u >out && + test_line_count = 2 out && + # Ensure we have the correct number of untracked files + git ls-files -o >out && + test_line_count = 1 out && + + # Nothing should have touched irrelevant_file + git rev-parse >actual \ + :0:irrelevant_file \ + :2:three \ + :3:three && + git rev-parse >expected \ + master:irrelevant_file \ + file_v2 \ + file_v4 && + test_cmp expected actual && + + # Make sure we have the correct merged contents for + # three + git show file_v1 >expected && + cat <<-\EOF >>expected && + <<<<<<< HEAD + modification + ======= + more stuff + yet more stuff + >>>>>>> R^0 + EOF + + test_cmp expected three + ) + ' +} + +test_conflicts_with_adds_and_renames rename rename failure +test_conflicts_with_adds_and_renames rename add failure +test_conflicts_with_adds_and_renames add rename failure +test_conflicts_with_adds_and_renames add add success + test_done