return null;
          }
        };

    source.read(processor);
    assertTrue(source.wasStreamOpened() && source.wasStreamClosed());
  }

  public void testHash() throws IOException {
    ByteSource byteSource = new TestByteSource("hamburger\n".getBytes(Charsets.US_ASCII));

    // Pasted this expected string from `echo hamburger | md5sum`

	if err := os.Symlink(filepath.Join(tmp, "hello"), filepath.Join(tmp, "hello.link")); err != nil {
		t.Fatal(err)
	}

	if err := TestFS(tmpfs, "hello", "hello.link"); err != nil {
		t.Fatal(err)
	}
}

func TestDash(t *testing.T) {
	m := MapFS{
		"a-b/a": {Data: []byte("a-b/a")},
	}
	if err := TestFS(m, "a-b/a"); err != nil {
		t.Error(err)
	}
}

type shuffledFS MapFS