!7

p {
  deleteAllProgramFiles();
  SS map = new FilesBasedStringMap(getProgramFile("test"));
  assertEquals(0, map.size());
  assertNull(map.get("bla"));
  map.put("bla", "blubb\nblubb");
  assertEquals(1, map.size());
  assertEquals("blubb\nblubb", map.get("bla"));
  assertEquals(ll("bla"), keysList(map));
  map.remove("bla");
  assertEquals(0, map.size());
}