Test that empty roots get dropped
|/
* initial1
+
+Empty roots should be dropped -> No sha1 equal guarantee for "nop"
+ $ cd ${TESTTMP}
+ $ git clone -q http://${TESTUSER}:${TESTPASS}@localhost:8002/real_repo.git rr &> /dev/null
+ $ cd rr
+ $ git log --graph --pretty=%s
+ * Import 3
+ |\
+ | * add great new_file2
+ * | Import 2
+ |\ \
+ | * | add new_file2
+ | |/
+ * | add new_file1
+ * | Combine
+ |\ \
+ | |/
+ |/|
+ | * initial2
+ * initial1
+ $ tree
+ .
+ |-- repo1
+ | |-- file1
+ | |-- new_file1
+ | `-- new_file2
+ `-- repo2
+ `-- file2
+
+ 2 directories, 4 files
+
$ bash ${TESTDIR}/destroy_test_env.sh
