r := NewReader(strings.NewReader("x"))
	r.ReadRune()
	r.Peek(1)
	r.UnreadRune()
	r.ReadRune() // Used to panic here
}

var testOutput = []byte("0123456789abcdefghijklmnopqrstuvwxy")
var testInput = []byte("012\n345\n678\n9ab\ncde\nfgh\nijk\nlmn\nopq\nrst\nuvw\nxy")
var testInputrn = []byte("012\r\n345\r\n678\r\n9ab\r\ncde\r\nfgh\r\nijk\r\nlmn\r\nopq\r\nrst\r\nuvw\r\nxy\r\n\n\r\n")

func TestReader(t *testing.T) {
	for _, zt := range tests {
		t.Run(zt.Name, func(t *testing.T) {
			readTestZip(t, zt)
		})
	}
}

func readTestZip(t *testing.T, zt ZipTest) {
	var z *Reader
	var err error
	var raw []byte
	if zt.Source != nil {
		rat, size := zt.Source()
		z, err = NewReader(rat, size)
		raw = make([]byte, size)
		if _, err := rat.ReadAt(raw, 0); err != nil {

				error_(r.Pos(), "expression C.%s: undefined C type '%s'", fixGo(r.Name.Go), r.Name.C)
			}
		case "var":
			expr = &ast.StarExpr{Star: (*r.Expr).Pos(), X: expr}
		case "macro":
			expr = &ast.CallExpr{Fun: expr}
		}
	case ctxSelector:
		if r.Name.Kind == "var" {
			expr = &ast.StarExpr{Star: (*r.Expr).Pos(), X: expr}
		} else {

//
//	LTYPE8 cond ioreg ',' '[' reglist ']'
//	{
//		var g obj.Addr
//
//		g = nullgen;
//		g.Type = obj.TYPE_CONST;
//		g.Offset = int64($6);
//		outcode($1, $2, &$3, 0, &g);
//	}
	MOVM	0(R1), [R2,R5,R8,g] // MOVM	(R1), [R2,R5,R8,g]
	MOVM	(R1), [R2-R5] // MOVM (R1), [R2,R3,R4,R5]
	MOVM	(R1), [R2]

//	LTYPE8 cond '[' reglist ']' ',' ioreg
//	{
//		var g obj.Addr
//
//		g = nullgen;

		result[i] = string(v)
	}
	return result
}

// For ease of reading, the test cases use strings that are converted to byte
// slices before invoking the functions.

var abcd = "abcd"
var faces = "☺☻☹"
var commas = "1,2,3,4"
var dots = "1....2....3....4"

type BinOpTest struct {
	a string
	b string
	i int
}

func TestEqual(t *testing.T) {
	// Run the tests and check for allocation at the same time.