t.Errorf("Read into empty buffer returned unexpected n of %d", n)
	}
}

func TestReadByOneByte(t *testing.T) {
	r := New(NewSource(1))
	b1 := make([]byte, 100)
	_, err := io.ReadFull(iotest.OneByteReader(r), b1)
	if err != nil {
		t.Errorf("read by one byte: %v", err)
	}
	r = New(NewSource(1))
	b2 := make([]byte, 100)
	_, err = r.Read(b2)
	if err != nil {
		t.Errorf("read: %v", err)
	}

		t.Errorf("transcript incorrect: got %x, want %x", got, chacha8hash)
	}

	p.Seed(chacha8seed)
	h.Reset()

	buf = make([]byte, chacha8outlen)
	if _, err := io.ReadFull(iotest.OneByteReader(p), buf); err != nil {
		t.Errorf("one byte reads: %v", err)
	}
	h.Write(buf)
	if got := h.Sum(nil); !bytes.Equal(got, chacha8hash) {
		t.Errorf("transcript incorrect (one byte reads): got %x, want %x", got, chacha8hash)

		{"DataErrReader", Func, 0},
		{"ErrReader", Func, 16},
		{"ErrTimeout", Var, 0},
		{"HalfReader", Func, 0},
		{"NewReadLogger", Func, 0},
		{"NewWriteLogger", Func, 0},
		{"OneByteReader", Func, 0},
		{"TestReader", Func, 16},
		{"TimeoutReader", Func, 0},
		{"TruncateWriter", Func, 0},
	},
	"testing/quick": {
		{"(*CheckEqualError).Error", Method, 0},