if !testCase.expectedErr {
			if err != nil {
				t.Errorf("error case %d: expected no error, got: %v", i+1, err)
			}
		} else if err == nil {
			t.Errorf("error case %d: expected error got: %v", i+1, err)
		}
		if err == nil {
			if hex.EncodeToString(sha256Sum) != testCase.expectedSha256hex {
				t.Errorf("case %d: result: expected: %v, got: %x", i+1, testCase.expectedSha256hex, sha256Sum)
			}

// specified by the developer. The purpose is to simulate errors
// that are hard to simulate in practice like DiskNotFound.
// Programmed errors are stored in errors field.
type naughtyDisk struct {
	// The real disk
	disk StorageAPI
	// Programmed errors: API call number => error to return
	errors map[int]error
	// The error to return when no error value is programmed
	defaultErr error

		}
		return err
	}

	googleAPIErr, ok := err.(*googleapi.Error)
	if !ok {
		// We don't interpret non MinIO errors. As minio errors will
		// have StatusCode to help to convert to object errors.
		return err
	}

	if len(googleAPIErr.Errors) == 0 {
		return err
	}

	reason := googleAPIErr.Errors[0].Reason
	message := googleAPIErr.Errors[0].Message

	switch reason {
	case "required":

func (tw *Writer) AddFS(fsys fs.FS) error {
	return fs.WalkDir(fsys, ".", func(name string, d fs.DirEntry, err error) error {
		if err != nil {
			return err
		}
		if name == "." {
			return nil
		}
		info, err := d.Info()
		if err != nil {
			return err
		}
		linkTarget := ""
		if typ := d.Type(); typ == fs.ModeSymlink {
			var err error
			linkTarget, err = fs.ReadLink(fsys, name)

	if err := DB.First(&result, "id = ?", yasuo.ID).Error; err != nil || yasuo.Name != "jinzhu" {
		t.Errorf("No error should happen, but got %v", err)
	}

	if err := DB.Where("id = $1", yasuo.ID).First(&Yasuo{}).Error; err != nil || yasuo.Name != "jinzhu" {
		t.Errorf("No error should happen, but got %v", err)
	}

	yasuo.Name = "jinzhu1"
	if err := DB.Save(&yasuo).Error; err != nil {
		t.Errorf("Failed to update date, got error %v", err)
	}

                        "required": ["errors"],
                        "type": "object",
                        "properties": {
                            "errors": {
                                "title": "Errors",
                                "type": "array",
                                "items": {"$ref": "#/components/schemas/Error"},
                            }
                        },

	if err := DB.First(&result, "id = ?", yasuo.ID).Error; err != nil || yasuo.Name != "jinzhu" {
		t.Errorf("No error should happen, but got %v", err)
	}

	if err := DB.Where("id = $1", yasuo.ID).First(&Yasuo{}).Error; err != nil || yasuo.Name != "jinzhu" {
		t.Errorf("No error should happen, but got %v", err)
	}

	yasuo.Name = "jinzhu1"
	if err := DB.Save(&yasuo).Error; err != nil {
		t.Errorf("Failed to update date, got error %v", err)
	}

			if testCase.err.Error() != err.Error() {
				t.Errorf("Test %d: %s: Expected to fail with error \"%s\", but instead failed with error \"%s\" instead", i+1, instanceType, testCase.err.Error(), err.Error())
			}
		}

		// Test passes as expected, but the output values are verified for correctness here.
		if err == nil && testCase.shouldPass {
			if testCase.result.Bucket != result.Bucket {

	}
	for i, urs := range unparsableRangeSpecs {
		rs, err := parseRequestRangeSpec(urs)
		if err == nil {
			t.Errorf("Case %d: Did not get an expected error - got %v", i, rs)
		}
		if isErrInvalidRange(err) {
			t.Errorf("Case %d: Got invalid range error instead of a parse error", i)
		}
		if rs != nil {
			t.Errorf("Case %d: Got non-nil rs though err != nil: %v", i, rs)
		}
	}

	invalidRangeSpecs := []string{
		"bytes=5-3",

	if err != nil {
		t.Errorf("read error: %v", err)
	}
	if n != 0 {
		t.Errorf("wrong count; got %d want 0", n)
	}
}

func TestUnreadByte(t *testing.T) {
	b := new(Buffer)

	// check at EOF
	if err := b.UnreadByte(); err == nil {
		t.Fatal("UnreadByte at EOF: got no error")
	}
	if _, err := b.ReadByte(); err == nil {
		t.Fatal("ReadByte at EOF: got no error")
	}