FOOTNOTES:

[C] _See our_ Author's Lectiones Opticæ § 10. _Sect. II. § 29. and Sect.
III. Prop. 25._

[D] See our Author's _Lectiones Opticæ_, Part. I. Sect. 1. §5.

[E] _This is very fully treated of in our_ Author's Lect. Optic. _Part_
I. _Sect._ II.

[F] _See our_ Author's Lect. Optic. Part I. Sect. II. § 29.

[G] _This is demonstrated in our_ Author's Lect. Optic. _Part_ I.
_Sect._ IV. _Prop._ 37.

artificial beam of Light XY. FOOTNOTES: [I] See p. 59. [J] _See our_ Author's Lect. Optic. _Part_ II. _Sect._ II. _p._ 239. [K] _As is done in our_ Author's Lect. Optic. _Part_ I. _Sect._ III. _and_ IV. _and Part_ II. _Sect._ II. [L] _See our_ Author's Lect. Optic. _Part_ II. _Sect._ II. _pag._ 269, &c. [M] _This is demonstrated in our_ Author's Lect. Optic. _Part_ I. _Sect._ IV. _Prop._ 35 _and_ 36. THE SECOND BOOK OF OPTICKS _PART I._ _Observations concerning the Reflexions, Refractions, and Colours of...

	// does not repeat, but there are only 10 possible digits, so it should be
	// reasonably compressible.
	{"Digits", "../testdata/e.txt"},
	// Newton is Isaac Newtons's educational text on Opticks.
	{"Newton", "../../testdata/Isaac.Newton-Opticks.txt"},
}

func BenchmarkDecode(b *testing.B) {
	doBench(b, func(b *testing.B, buf0 []byte, level, n int) {
		b.ReportAllocs()
		b.StopTimer()
		b.SetBytes(int64(n))

		}
	}
}

func TestLargeXXHash(t *testing.T) {
	if testing.Short() {
		t.Skip("skipping expensive test in short mode")
	}

	data, err := os.ReadFile("../../testdata/Isaac.Newton-Opticks.txt")
	if err != nil {
		t.Fatal(err)
	}

	var xh xxhash64
	xh.reset()
	i := 0
	for i < len(data) {
		// Write varying amounts to test buffering.
		c := i%4094 + 1
		if i+c > len(data) {

	for i := 0; i < b.N; i++ {
		New(data)
	}
}

func makeText(name string) ([]byte, error) {
	var data []byte
	switch name {
	case "opticks":
		var err error
		data, err = os.ReadFile("../../testdata/Isaac.Newton-Opticks.txt")
		if err != nil {
			return nil, err
		}
	case "go":
		err := filepath.WalkDir("../..", func(path string, info fs.DirEntry, err error) error {

	if n, err := r.Read(nil); n != 0 || err != nil {
		t.Errorf("Read(nil) = (%d, %v), want (0, nil)", n, err)
	}
}

var (
	digits = mustLoadFile("testdata/e.txt.bz2")
	newton = mustLoadFile("testdata/Isaac.Newton-Opticks.txt.bz2")
	random = mustLoadFile("testdata/random.data.bz2")
)

func benchmarkDecode(b *testing.B, compressed []byte) {
	// Determine the uncompressed size of testfile.

	{
		"../testdata/e.txt",
		"2.718281828...",
		[...]int{100018, 50650, 50960, 51150, 50930, 50790, 50790, 50790, 50790, 50790, 43683},
	},
	{
		"../../testdata/Isaac.Newton-Opticks.txt",
		"Isaac.Newton-Opticks",
		[...]int{567248, 218338, 198211, 193152, 181100, 175427, 175427, 173597, 173422, 173422, 325240},
	},
}

func TestDeflateInflateString(t *testing.T) {
	t.Parallel()

)

// bigData returns the contents of our large test file repeated multiple times.
func bigData(t testing.TB) []byte {
	bigDataOnce.Do(func() {
		bigDataBytes, bigDataErr = os.ReadFile("../../testdata/Isaac.Newton-Opticks.txt")
		if bigDataErr == nil {
			bigDataBytes = bytes.Repeat(bigDataBytes, 20)
		}
	})
	if bigDataErr != nil {
		t.Fatal(bigDataErr)
	}
	return bigDataBytes
}

	"crypto/sha256"
	"encoding/hex"
	"errors"
	"fmt"
	"internal/poll"
	"io"
	"os"
	"runtime"
	"strconv"
	"sync"
	"testing"
	"time"
)

const (
	newton       = "../testdata/Isaac.Newton-Opticks.txt"
	newtonLen    = 567198
	newtonSHA256 = "d4a9ac22462b35e7821a4f2706c211093da678620a8f9997989ee7cf8d507bbd"
)

// expectSendfile runs f, and verifies that internal/poll.SendFile successfully handles

	want := []string{"src/compress/bzip2/bit_reader.go", "src/compress/bzip2/bzip2.go", "src/compress/bzip2/bzip2_test.go", "src/compress/bzip2/huffman.go", "src/compress/bzip2/move_to_front.go", "src/compress/bzip2/testdata/Isaac.Newton-Opticks.txt.bz2", "src/compress/bzip2/testdata/e.txt.bz2", "src/compress/bzip2/testdata/fail-issue5747.bz2", "src/compress/bzip2/testdata/pass-random1.bin", "src/compress/bzip2/testdata/pass-random1.bz2", "src/compress/bzip2/testdata/pass-random2.bin", "...