[PATCH v3 1/2] cvsimport: add test illustrating a bug in cvsps

From: Heiko Voigt <git-list@hvoigt.net>
Date: Mar 18, 2009, 17:33 UTC
Message-ID: <49C1306E.6060201@hvoigt.net>
In-Reply-To: <49B52F74.1090006@alum.mit.edu>

Some cvs repositories may have time deviations in their recorded commits. This is a test for one of such cases. These kind of repositories can happen if the system time of cvs clients is not fully synchronised.

Consider the following sequence of events:

 * client A commits file a r1.1
 * client A commits file a r1.2, b r1.1
 * client B commits file b r1.2 using the same timestamp as a r1.1

This can be resolved but due to cvsps ordering its patchsets solely based on the timestamp. It only takes revision odering into account if there is no difference in the timestamp.

I hit this bug when importing from a real repository which was originally converted from another rcs based scm. Other import tools can handle this correctly, e.g. parsecvs.

Signed-off-by: Heiko Voigt <hvoigt@hvoigt.net>
---

 t/t9603-cvsimport-patchsets.sh     |   33 +++++++++++++++++++++++++++++
 t/t9603/cvsroot/CVSROOT/.gitignore |    2 +
 t/t9603/cvsroot/module/a,v         |   40 ++++++++++++++++++++++++++++++++++++
 t/t9603/cvsroot/module/b,v         |   40 ++++++++++++++++++++++++++++++++++++
 4 files changed, 115 insertions(+), 0 deletions(-)
 create mode 100755 t/t9603-cvsimport-patchsets.sh
 create mode 100644 t/t9603/cvsroot/CVSROOT/.gitignore
 create mode 100644 t/t9603/cvsroot/module/a,v
 create mode 100644 t/t9603/cvsroot/module/b,v

diff --git a/t/t9603-cvsimport-patchsets.sh b/t/t9603-cvsimport-patchsets.sh
new file mode 100755
index 0000000..15a971f
--- /dev/null
+++ b/t/t9603-cvsimport-patchsets.sh
@@ -0,0 +1,33 @@
+#!/bin/sh
+
+# Structure of the test cvs repository
+#
+# Message   File:Content         Commit Time
+# Rev 1     a: 1.1               2009-02-21 19:11:43 +0100
+# Rev 2     a: 1.2    b: 1.1     2009-02-21 19:11:14 +0100
+# Rev 3               b: 1.2     2009-02-21 19:11:43 +0100
+#
+# As you can see the commit of Rev 3 has the same time as
+# Rev 1 this leads to a broken import because of a cvsps
+# bug.
+
+test_description='git cvsimport testing for correct patchset estimation'
+. ./lib-cvs.sh
+
+CVSROOT="$TEST_DIRECTORY"/t9603/cvsroot
+export CVSROOT
+
+test_expect_failure 'import with criss cross times on revisions' '
+
+    git cvsimport -p"-x" -C module-git module &&
+    cd module-git &&
+        git log --pretty=format:%s > ../actual &&
+        echo "" >> ../actual &&
+    cd .. &&
+    echo "Rev 3
+Rev 2
+Rev 1" > expect &&
+    test_cmp actual expect
+'
+
+test_done
diff --git a/t/t9603/cvsroot/CVSROOT/.gitignore b/t/t9603/cvsroot/CVSROOT/.gitignore
new file mode 100644
index 0000000..3bb9b34
--- /dev/null
+++ b/t/t9603/cvsroot/CVSROOT/.gitignore
@@ -0,0 +1,2 @@
+history
+val-tags
diff --git a/t/t9603/cvsroot/module/a,v b/t/t9603/cvsroot/module/a,v
new file mode 100644
index 0000000..e86adfc
--- /dev/null
+++ b/t/t9603/cvsroot/module/a,v
@@ -0,0 +1,40 @@
+head	1.2;
+access;
+symbols;
+locks; strict;
+comment	@# @;
+
+
+1.2
+date	2009.02.21.18.11.14;	author tester;	state Exp;
+branches;
+next	1.1;
+
+1.1
+date	2009.02.21.18.11.43;	author tester;	state Exp;
+branches;
+next	;
+
+
+desc
+@@
+
+
+1.2
+log
+@Rev 2
+@
+text
+@1.2
+@
+
+
+1.1
+log
+@Rev 1
+@
+text
+@d1 1
+a1 1
+1.1
+@
diff --git a/t/t9603/cvsroot/module/b,v b/t/t9603/cvsroot/module/b,v
new file mode 100644
index 0000000..ab3089f
--- /dev/null
+++ b/t/t9603/cvsroot/module/b,v
@@ -0,0 +1,40 @@
+head	1.2;
+access;
+symbols;
+locks; strict;
+comment	@# @;
+
+
+1.2
+date	2009.02.21.18.11.43;	author tester;	state Exp;
+branches;
+next	1.1;
+
+1.1
+date	2009.02.21.18.11.14;	author tester;	state Exp;
+branches;
+next	;
+
+
+desc
+@@
+
+
+1.2
+log
+@Rev 3
+@
+text
+@1.2
+@
+
+
+1.1
+log
+@Rev 2
+@
+text
+@d1 1
+a1 1
+1.1
+@

-- 
1.6.1.2.390.gba743