func TestFS(t *testing.T) {
	for _, test := range []struct {
		file string
		want []string
	}{
		{
			"testdata/unix.zip",
			[]string{"hello", "dir/bar", "readonly"},
		},
		{
			"testdata/subdir.zip",
			[]string{"a/b/c"},
		},
	} {
		test := test
		t.Run(test.file, func(t *testing.T) {
			t.Parallel()
			z, err := OpenReader(test.file)
			if err != nil {

	// Just run the test with amd64.
	parser := newParser("amd64")
	var buf strings.Builder
	parser.errorWriter = &buf

	for _, cat := range testcats {
		for _, test := range cat.tests {
			parser.allowABI = cat.allowABI
			parser.errorCount = 0
			parser.lineNum++
			if !parser.pseudo(test.pseudo, tokenize(test.operands)) {
				t.Fatalf("Wrong pseudo-instruction: %s", test.pseudo)
			}

			}
		}
		if err != test.err {
			t.Errorf("expected error %v, got %v", test.err, err)
		}
	}
}

func TestReadString(t *testing.T) {
	for _, test := range readBytesTests {
		buf := NewBufferString(test.buffer)
		var err error
		for _, expected := range test.expected {
			var s string
			s, err = buf.ReadString(test.delim)
			if s != expected {
				t.Errorf("expected %q, got %q", expected, s)
			}

	for _, test := range tests {
		err := tryParse(t, func() {
			parser.start(lex.Tokenize(test.input))
			addr := obj.Addr{}
			parser.operand(&addr)
		})

		switch {
		case err == nil:
			t.Errorf("fail at %s: got no errors; expected %s\n", test.input, test.error)
		case !strings.Contains(err.Error(), test.error):

	src := make([]byte, 10)
	eofR := &eofReader{buf: src}
	r := NewReader(eofR)

	// Start by reading 5 of the 10 available bytes.
	dest := make([]byte, 5)
	read, err := r.Read(dest)
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if n := len(dest); read != n {
		t.Fatalf("read %d bytes; wanted %d bytes", read, n)
	}

	// The Reader should have buffered all the content from the io.Reader.

	for i, test := range exprTests {
		p.start(lex.Tokenize(test.input))
		result := int64(p.expr())
		if result != test.output {
			t.Errorf("%d: %q evaluated to %d; expected %d", i, test.input, result, test.output)
		}
		tok := p.next()
		if test.atEOF && tok.ScanToken != scanner.EOF {
			t.Errorf("%d: %q: at EOF got %s", i, test.input, tok)
		} else if !test.atEOF && tok.ScanToken == scanner.EOF {

	out, err := testenv.Command(t, testenv.GoToolPath(t), "test", "-c", "-o", exepath, "cmd/addr2line").CombinedOutput()
	if err != nil {
		t.Fatalf("go test -c -o %v cmd/addr2line: %v\n%s", exepath, err, string(out))
	}

	syms := loadSyms(t, exepath)

	testAddr2Line(t, exepath, syms[symName])
	testAddr2Line(t, exepath, "0x"+syms[symName])

		{"a☺b☻c☹d", "b", len("a☺")},               // non-ascii
	}
	for _, test := range testCases {
		actual := LastIndexByte([]byte(test.a), test.b[0])
		if actual != test.i {
			t.Errorf("LastIndexByte(%q,%c) = %v; want %v", test.a, test.b[0], actual, test.i)
		}
	}
}

// test a larger buffer with different sizes and alignments
func TestIndexByteBig(t *testing.T) {
	var n = 1024

	}

	re := regexp.MustCompile(`[vV]ersion +(\d+)([.]\d+)?([.]\d+)?`)
	matches := re.FindSubmatch(out)
	if matches == nil {
		// Can't find version number; hope for the best.
		t.Logf("failed to find swig version, continuing")
		return
	}

	var parseError error
	atoi := func(s string) int {
		x, err := strconv.Atoi(s)
		if err != nil && parseError == nil {

test.txt This is a test text file. gophercolor16x16.png...