diff --git a/tests/test-convert-svn b/tests/test-convert-svn
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
+