closeBitrotWriters(writers)
		if err != nil && !test.shouldFail {
			t.Errorf("Test %d: should pass but failed with: %v", i, err)
		}
		if err == nil && test.shouldFail {
			t.Errorf("Test %d: should fail but it passed", i)
		}
		for i, w := range writers {
			if w == nil {
				disks[i] = OfflineDisk
			}
		}
		if err == nil {

    E duplicate = arrayAndDuplicate.duplicate;

    assertTrue(
        "removeAll(intersectingCollection) should return true",
        getList().removeAll(MinimalCollection.of(duplicate)));
    assertFalse(
        "after removeAll(e), a collection should not contain e even "
            + "if it initially contained e more than once.",
        getList().contains(duplicate));
  }

    E duplicate = arrayAndDuplicate.duplicate;

    assertTrue(
        "removeAll(intersectingCollection) should return true",
        getList().removeAll(MinimalCollection.of(duplicate)));
    assertFalse(
        "after removeAll(e), a collection should not contain e even "
            + "if it initially contained e more than once.",
        getList().contains(duplicate));
  }

  public void testNullEscaper() throws IOException {
    Escaper escaper = Escapers.nullEscaper();
    EscaperAsserts.assertBasic(escaper);
    String s = "\0\n\t\\az09~\uD800\uDC00\uFFFF";
    assertEquals("null escaper should have no effect", s, escaper.escape(s));
  }

  public void testBuilderInitialStateNoReplacement() {
    // Unsafe characters aren't modified by default (unsafeReplacement == null).

		}
	}
}

func TestXLStorageIsDirEmpty(t *testing.T) {
	tmp := t.TempDir()

	// Should give false on non-existent directory.
	dir1 := slashpath.Join(tmp, "non-existent-directory")
	if isDirEmpty(dir1, true) {
		t.Error("expected false for non-existent directory, got true")
	}

	// Should give false for not-a-directory.
	dir2 := slashpath.Join(tmp, "file")
	err := os.WriteFile(dir2, []byte("hello"), 0o777)

		h := setRequestValidityMiddleware(okHandler)
		h.ServeHTTP(w, r)

		switch {
		case test.ShouldFail && w.Code == http.StatusOK:
			t.Errorf("Test %d: should fail but status code is HTTP %d", i, w.Code)
		case !test.ShouldFail && w.Code != http.StatusOK:
			t.Errorf("Test %d: should not fail but status code is HTTP %d and not 200 OK", i, w.Code)
		}
	}

      // e.g. a certificate pinning error.
      return false
    }
    // An example of one we might want to retry with a different route is a problem connecting to a
    // proxy and would manifest as a standard IOException. Unless it is one we know we should not
    // retry, we return true and try a new route.
    return true
  }

  /**
   * Figures out the HTTP request to make in response to receiving [userResponse]. This will

    int expectedHashCode = 0;
    for (E element : getSampleElements()) {
      expectedHashCode += ((element == null) ? 0 : element.hashCode());
    }
    assertEquals(
        "A Set's hashCode() should be the sum of those of its elements.",
        expectedHashCode,
        getSet().hashCode());
  }

  @CollectionSize.Require(absent = CollectionSize.ZERO)
  @CollectionFeature.Require(ALLOWS_NULL_VALUES)

                    "loc": ["query", "skip"],
                    "msg": "Input should be a valid integer, unable to parse string as an integer",
                    "input": "a",
                },
                {
                    "type": "int_parsing",
                    "loc": ["query", "limit"],
                    "msg": "Input should be a valid integer, unable to parse string as an integer",
                    "input": "b",

  }

  private void expectReturnsTrue(Target target) {
    String message = Platform.format("retainAll(%s) should return true", target);
    assertTrue(message, collection.retainAll(target.toRetain));
  }

  private void expectReturnsFalse(Target target) {
    String message = Platform.format("retainAll(%s) should return false", target);
    assertFalse(message, collection.retainAll(target.toRetain));
  }