void do_tests() { write_file("/rename_test", "Hmm."); rename("/rename_test", "/ren_test"); ASSERT(file_size("/rename_test") == -1); ASSERT(read_file("/ren_test") == "Hmm."); rename("/ren_test", "/single"); ASSERT(file_size("/ren_test") == -1); ASSERT(read_file("/single/ren_test") == "Hmm."); rm("/single/ren_test"); }