@Test
public void getOsTotalFreeMemorySizeMissingEntry() {

  final List<String> lines = Arrays.asList("MemFree:        1 kB", "Foo: 10 kB");
  final long size = this.util.getOsTotalFreeMemorySizeFromStrings(lines, OsMemoryUtil.MEM_KEYS);
  assertEquals(0, size);
}