Function benchmarkStatelessEncoder

flate/writer_test.go:224–255

(b *testing.B, testfile, n int)

func BenchmarkEncodeTwain1024Win1e6(b *testing.B) { benchmarkEncoder(b, twain, oneK, 1e6) }

func benchmarkStatelessEncoder(b *testing.B, testfile, n int) {
	b.SetBytes(int64(n))
	buf0, err := os.ReadFile(testfiles[testfile])
	if err != nil {
		b.Fatal(err)
	}
	if len(buf0) == 0 {
		b.Fatalf("test file %q has no data", testfiles[testfile])
	}
	buf1 := make([]byte, n)
	for i := 0; i < n; i += len(buf0) {
		if len(buf0) > n-i {
			buf0 = buf0[:n-i]
		}
		copy(buf1[i:], buf0)
	}
	buf0 = nil
	runtime.GC()
	b.ResetTimer()
	b.ReportAllocs()
	for i := 0; i < b.N; i++ {
		w := NewStatelessWriter(io.Discard)
		_, err = w.Write(buf1)
		if err != nil {
			b.Fatal(err)
		}
		err = w.Close()
		if err != nil {
			b.Fatal(err)
		}
	}
}

// A writer that fails after N writes.
type errorWriter struct {