// On filesystems such as btrfs, nfs this is not true, so fallback
		// to performing readdir() instead.
		entries, err := readDirN(dirname, 1)
		if err != nil {
			return false
		}
		return len(entries) == 0
	}
	var stat syscall.Stat_t
	if err := syscall.Stat(dirname, &stat); err != nil {
		return false
	}
	return stat.Mode&syscall.S_IFMT == syscall.S_IFDIR && stat.Nlink == 2

// license that can be found in the LICENSE file.

package bytes_test

import (
	. "bytes"
	"testing"
)

func BenchmarkSplitSeqEmptySeparator(b *testing.B) {
	for range b.N {
		for range SplitSeq(benchInputHard, nil) {
		}
	}
}

func BenchmarkSplitSeqSingleByteSeparator(b *testing.B) {
	sep := []byte("/")
	for range b.N {
		for range SplitSeq(benchInputHard, sep) {
		}
	}
}

	atomic.AddInt64(&rt.SinceUptime.Bytes, size)
	atomic.AddInt64(&rt.SinceUptime.Count, 1)
	rt.LastMinute.addsize(size)
	rt.LastHour.addsize(size)
	if err != nil && minio.ToErrorResponse(err).Code == "AccessDenied" {
		if rt.ErrCounts == nil {
			rt.ErrCounts = make(map[string]int)
		}
		rt.ErrCounts["AccessDenied"]++
	}
}

func (rt *RTimedMetrics) merge(o RTimedMetrics) (n RTimedMetrics) {

			if err != nil {
				t.Fatal(err)
			}
			r.Close()
			idx := idxCB()
			if !tt.wantIdx && len(idx) > 0 {
				t.Errorf("index returned above threshold")
			}
			if tt.wantIdx {
				if idx == nil {
					t.Errorf("no index returned")
				}
				var index s2.Index
				_, err = index.Load(s2.RestoreIndexHeaders(idx))
				if err != nil {
					t.Errorf("error loading index: %v", err)

		t.Fatalf("Expecting error, got %s", err)
	}

	_, _, err = waitForFormatErasure(true, nil, 1, 1, 16, "")
	if err != errInvalidArgument {
		t.Fatalf("Expecting error, got %s", err)
	}

	// Initializes all erasure disks
	storageDisks, format, err := waitForFormatErasure(true, endpoints, 1, 1, 16, "")
	if err != nil {
		t.Fatalf("Unable to format drives for erasure, %s", err)
	}

				t.Errorf("Where conditions should be different")
			}
		})
	}
}

func TestNilCondition(t *testing.T) {
	s := new(Statement)
	if len(s.BuildCondition(nil)) != 0 {
		t.Errorf("Nil condition should be empty")
	}
}

func TestNameMatcher(t *testing.T) {
	for k, v := range map[string][]string{
		"table.name":         {"table", "name"},
		"`table`.`name`":     {"table", "name"},

		}
	}
	if len(m.LifeTimeOps) == 0 {
		m.LifeTimeOps = nil
	}

	m.LastMinute.Operations = make(map[string]madmin.TimedAction, osMetricLast)
	for i := range osMetricLast {
		lm := o.latency[i].total()
		if lm.N > 0 {
			m.LastMinute.Operations[i.String()] = lm.asTimedAction()
		}
	}
	if len(m.LastMinute.Operations) == 0 {
		m.LastMinute.Operations = nil
	}

	return m

// getSHA256Hash returns SHA-256 sum of given data.
func getSHA256Sum(data []byte) []byte {
	hash := sha256.New()
	hash.Write(data)
	return hash.Sum(nil)
}

// getMD5Sum returns MD5 sum of given data.
func getMD5Sum(data []byte) []byte {
	hash := md5.New()
	hash.Write(data)
	return hash.Sum(nil)
}

// getMD5Hash returns MD5 hash in hex encoding of given data.
func getMD5Hash(data []byte) string {

	for _, testCase := range testCases {
		t.Run(testCase.str, func(t *testing.T) {
			gotPatterns, err := parseCompressIncludes(testCase.str)
			if !testCase.success && err == nil {
				t.Error("expected failure but success instead")
			}
			if testCase.success && err != nil {
				t.Errorf("expected success but failed instead %s", err)
			}
			if testCase.success && !reflect.DeepEqual(testCase.expectedPatterns, gotPatterns) {

package disk

import (
	"os"
)

// Fdatasync is a no-op
func Fdatasync(f *os.File) error {
	return nil
}

// FadviseDontNeed is a no-op
func FadviseDontNeed(f *os.File) error {
	return nil