/* This one fails. See comment in Slice.Col.
	{
		"nested #define with args",
		lines(
			"#define A #define B (x) x",
			"A",
			"B(THIS)",
		),
		"x.\n",
	},
	*/
}

func TestLex(t *testing.T) {
	for _, test := range lexTests {
		input := NewInput(test.name)
		input.Push(NewTokenizer(test.name, strings.NewReader(test.input), nil))
		result := drain(input)
		if result != test.output {

	{"&&||!()xy yx ", "&& || ! ( ) xy yx"},
	{"x~", "x err: invalid syntax at ~"},
	{"x ~", "x err: invalid syntax at ~"},
	{"x &", "x err: invalid syntax at &"},
	{"x &y", "x err: invalid syntax at &"},
}

func TestLex(t *testing.T) {
	for i, tt := range lexTests {
		t.Run(fmt.Sprint(i), func(t *testing.T) {
			p := &exprParser{s: tt.in}
			out := ""
			for {
				tok, err := lexHelp(p)
				if tok == "" && err == nil {
					break

			return false
		}
		if checkPos && i1[k].pos != i2[k].pos {
			return false
		}
		if checkPos && i1[k].line != i2[k].line {
			return false
		}
	}
	return true
}

func TestLex(t *testing.T) {
	for _, test := range lexTests {
		items := collect(&test, "", "")
		if !equal(items, test.items, false) {
			t.Errorf("%s: got\n\t%+v\nexpected\n\t%v", test.name, items, test.items)
			return // TODO