package cmd

import (
	"fmt"
	"os"
	"path"
	"path/filepath"
	"runtime"
	"sort"
	"testing"
)

// Test to check for different input arguments.
func TestReadDirFail(t *testing.T) {
	// Check non existent directory.
	if _, err := readDir("/tmp/non-existent-directory"); err != errFileNotFound {
		t.Fatalf("expected = %s, got: %s", errFileNotFound, err)
	}

// It does not matter whether sp represents data fragments or hole fragments.
func validateSparseEntries(sp []sparseEntry, size int64) bool {
	// Validate all sparse entries. These are the same checks as performed by
	// the BSD tar utility.
	if size < 0 {
		return false
	}
	var pre sparseEntry
	for _, cur := range sp {
		switch {
		case cur.Offset < 0 || cur.Length < 0:

							return err
						}
						internalLogIf(ctx, err)
					}
				}
				dirStack = dirStack[:len(dirStack)-1]
			}

			// All objects will be returned as directories, there has been no object check yet.
			// Check it by attempting to read metadata.
			_, isDirObj := dirObjects[entry]
			if isDirObj {
				meta.name = meta.name[:len(meta.name)-1] + globalDirSuffixWithSlash
			}

			if s.walkReadMu != nil {

}

// SetExpectedMax set expected max data expected from reader
func (r *Reader) SetExpectedMax(expectedMax int64) {
	r.expectedMax = expectedMax
}

// AddChecksum will add checksum checks as specified in
// https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html
// Returns ErrInvalidChecksum if a problem with the checksum is found.

	}
	return fmt.Sprintf(".%s", o.ID.String())
}

func (o *ObjectKey) keyString() string {
	if o.Lit != nil {
		return string(*o.Lit)
	}
	return o.ID.String()
}

// getLastKeypathComponent checks if the given expression is a path
// expression, and if so extracts the last dot separated component of
// the path. Otherwise it returns false.
func getLastKeypathComponent(e *Expression) (string, bool) {
	if len(e.And) > 1 ||

	return ok && !strings.EqualFold(h.Get(xhttp.AmzServerSideEncryption), xhttp.AmzEncryptionKMS)
}

// ParseHTTP parses the SSE-S3 related HTTP headers and checks
// whether they contain valid values.
func (sses3) ParseHTTP(h http.Header) error {
	if h.Get(xhttp.AmzServerSideEncryption) != xhttp.AmzEncryptionAES {
		return ErrInvalidEncryptionMethod
	}
	return nil
}

# For example:
#
#	make v1.2.3.zip
#	make v1.2.3.test
#
# and then if changes are needed, check them into master
# and run 'make v1.2.3.rm' and repeat.
#
# Note that once published a snapshot zip file should never
# be modified. We record the sha256 hashes of the zip files
# in fips140.sum, and the cmd/go/internal/fips140 test checks
# that the zips match.
#
# When the zip file is finalized, run 'make updatesum' to update

	metadata[MetaSealedKeySSEC] = base64.StdEncoding.EncodeToString(sealedKey.Key[:])
	return metadata
}

// ParseMetadata extracts all SSE-C related values from the object metadata
// and checks whether they are well-formed. It returns the sealed object key
// on success.
func (ssec) ParseMetadata(metadata map[string]string) (sealedKey SealedKey, err error) {
	// Extract all required values from object metadata

// qProp contains analysis info about an SQL term.
type qProp struct {
	isAggregation, isRowFunc bool

	err error
}

// `combine` combines a pair of `qProp`s, so that errors are
// propagated correctly, and checks that an aggregation is not being
// combined with a row-function term.
func (p *qProp) combine(q qProp) {
	switch {
	case p.err != nil:
		// Do nothing
	case q.err != nil:
		p.err = q.err
	default:

	// HTTP request for testing when `objectLayer` is set to `nil`.
	// There is no need to use an existing bucket and valid input for creating the request
	// since the `objectLayer==nil`  check is performed before any other checks inside the handlers.
	// The only aim is to generate an HTTP request in a way that the relevant/registered end point is evoked/called.
	nilBucket := "dummy-bucket"