@Test
/**
 * There's still space in the cache, no deletion.
 */
public void testNotDeleting() {

  final ProjectCacheCleaner cleaner = new ProjectCacheCleaner(this.cacheDir,
      0.7);
  cleaner.deleteProjectDirsIfNecessary(1);
  assertThat(this.cacheDir.list()).hasSize(3);
}