new file mode 100755
--- /dev/null
+++ b/tests/test-convert-svn
@@ -0,0 +1,53 @@
+#!/bin/sh
+
+"$TESTDIR/hghave" svn svn-bindings || exit 80
+
+fix_path()
+{
+    tr '\\' /
+}
+
+echo "[extensions]" >> $HGRCPATH
+echo "convert = " >> $HGRCPATH
+
+svnadmin create svn-repo
+
+echo % initial svn import
+mkdir t
+cd t
+echo a > a
+cd ..
+
+svnpath=`pwd | tr '\\' /`
+# SVN wants all paths to start with a slash. Unfortunately,
+# Windows ones don't. Handle that.
+expr $svnpath : "\/" > /dev/null
+if [ $? -ne 0 ]; then
+    svnpath='/'$svnpath
+fi
+
+svnurl=file://$svnpath/svn-repo/trunk
+svn import -m init t $svnurl | fix_path
+
+echo % update svn repository
+svn co $svnurl t2 | fix_path
+cd t2
+echo b >> a
+echo b > b
+svn add b
+svn ci -m changea
+cd ..
+
+echo % convert to hg once
+hg convert $svnurl
+
+echo % update svn repository again
+cd t2
+echo c >> a
+echo c >> b
+svn ci -m changeb
+cd ..
+
+echo % test incremental conversion
+hg convert $svnurl
+

new file mode 100644
--- /dev/null
+++ b/tests/test-convert-svn.out
@@ -0,0 +1,32 @@
+% initial svn import
+Adding         t/a
+
+Committed revision 1.
+% update svn repository
+A    t2/a
+Checked out revision 1.
+A         b
+Sending        a
+Adding         b
+Transmitting file data ..
+Committed revision 2.
+% convert to hg once
+assuming destination trunk-hg
+initializing destination trunk-hg repository
+scanning source...
+sorting...
+converting...
+1 init
+0 changea
+% update svn repository again
+Sending        a
+Sending        b
+Transmitting file data ..
+Committed revision 3.
+% test incremental conversion
+assuming destination trunk-hg
+destination trunk-hg is a Mercurial repository
+scanning source...
+sorting...
+converting...
+0 changeb