lifecycleResponse:  []byte(``),
			errorResponse: APIErrorResponse{
				Resource: SlashSeparator + bucketName + SlashSeparator,
				Code:     "InvalidArgument",
				Message:  "Date must be provided in ISO 8601 format",
			},

			shouldPass: false,
		},
		{
			method:             http.MethodPut,
			bucketName:         bucketName,
			accessKey:          creds.AccessKey,

	ErrMalformedBucketObjectConfig = errors.New("invalid bucket object lock config")
	// ErrInvalidRetentionDate - indicates that retention date needs to be in ISO 8601 format
	ErrInvalidRetentionDate = errors.New("date must be provided in ISO 8601 format")
	// ErrPastObjectLockRetainDate - indicates that retention date must be in the future
	ErrPastObjectLockRetainDate = errors.New("the retain until date must be in the future")

import (
	"encoding/xml"
	"time"
)

var (
	errLifecycleInvalidDate         = Errorf("Date must be provided in ISO 8601 format")
	errLifecycleInvalidDays         = Errorf("Days must be positive integer when used with Expiration")
	errLifecycleInvalidExpiration   = Errorf("Exactly one of Days (positive integer) or Date (positive ISO 8601 format) should be present inside Expiration.")

				t.Fatalf("%d: Expected %v but got %v", i+1, tc.expectedErr, err)
			}
		})
	}

	validationTestCases := []struct {
		inputXML    string
		expectedErr error
	}{
		{ // Expiration with a valid ISO 8601 date
			inputXML: `<Expiration>
                                    <Date>2019-04-20T00:00:00Z</Date>
                                    </Expiration>`,
			expectedErr: nil,
		},

		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrInvalidRetentionDate: {
		Code:           "InvalidRequest",
		Description:    "Date must be provided in ISO 8601 format",
		HTTPStatusCode: http.StatusBadRequest,
	},
	ErrPastObjectLockRetainDate: {
		Code:           "InvalidRequest",
		Description:    "the retain until date must be in the future",

		// gcc's DWARF generator outputs a single DotDotDotType parameter for
		// function pointers that specify no parameters (e.g. void
		// (*__cgo_0)()).  Treat this special case as void. This case is
		// invalid according to ISO C anyway (i.e. void (*__cgo_1)(...) is not
		// legal).
		if _, ok := f.(*dwarf.DotDotDotType); ok && i == 0 {
			p, gp = nil, nil
			break
		}
		p[i] = c.FuncArg(f, pos)