for k := 0; k < len(bufsizes); k++ {
					readmaker := readMakers[i]
					bufreader := bufreaders[j]
					bufsize := bufsizes[k]
					read := readmaker.fn(strings.NewReader(text))
					buf := NewReaderSize(read, bufsize)
					s := bufreader.fn(buf)
					if s != text {
						t.Errorf("reader=%s fn=%s bufsize=%d want=%q got=%q",
							readmaker.name, bufreader.name, bufsize, text, s)
					}
				}
			}

					t.Errorf("Case: %d %#v, expected: \"%s\", got: \"%s\"", i+1, testCase, string(testCase.expectedBuf), string(buf[:testCase.bufSize]))
				}
				if n != int64(testCase.bufSize) {
					t.Errorf("Case: %d %#v, expected: %d, got: %d", i+1, testCase, testCase.bufSize, n)
				}
			}
		}
	}

	// TestXLStorage for permission denied.
	if runtime.GOOS != globalWindowsOSName {