"github.com/google/go-cmp/cmp"
)

// TestAppendixA roundtrips the examples of encoded CBOR data items in RFC 8949 Appendix A. For
// completeness, all examples from the appendix are included, even those those that are rejected by
// this decoder or are re-encoded to a different sequence of CBOR bytes (with explanation).
func TestAppendixA(t *testing.T) {
	hex := func(h string) []byte {
		b, err := hex.DecodeString(h)

     */
    @Test
    public void testToHex2() throws Exception {
        assertEquals("0001", StringUtil.toHex(1));
    }

    /**
     * @throws Exception
     */
    @Test
    public void testAppendHex() throws Exception {
        final StringBuilder buf = new StringBuilder();
        StringUtil.appendHex(buf, (byte) 1);
        assertEquals("01", buf.toString());
    }

    /**
     * @throws Exception

	hello        = "hello "
)

func TestAppendf(t *testing.T) {
	b := make([]byte, 100)
	b = b[:copy(b, hello)]
	got := Appendf(b, "world, %d", 23)
	if string(got) != appendResult {
		t.Fatalf("Appendf returns %q not %q", got, appendResult)
	}
	if &b[0] != &got[0] {
		t.Fatalf("Appendf allocated a new slice")
	}
}

func TestAppend(t *testing.T) {
	b := make([]byte, 100)

		if f.time.Format(RFC3339) != f.formattedValue {
			t.Error("RFC3339:")
			t.Errorf("  want=%+v", f.formattedValue)
			t.Errorf("  have=%+v", f.time.Format(RFC3339))
		}
	}
}

func TestAppendInt(t *testing.T) {
	tests := []struct {
		in    int
		width int
		want  string
	}{
		{0, 0, "0"},
		{0, 1, "0"},
		{0, 2, "00"},
		{0, 3, "000"},
		{1, 0, "1"},
		{1, 1, "1"},
		{1, 2, "01"},

		t.Fatalf("WriteString: %d, %v", n, err)
	}
	f.Close()
	data, err := ReadFile(fname)
	if err != nil {
		t.Fatalf("ReadFile: %v", err)
	}
	return string(data)
}

func TestAppend(t *testing.T) {
	defer chtmpdir(t)()
	const f = "append.txt"
	s := writeFile(t, f, O_CREATE|O_TRUNC|O_RDWR, "new")
	if s != "new" {
		t.Fatalf("writeFile: have %q want %q", s, "new")
	}

	{nil, []int{22}},
	{[]int{}, []int{22}},
	{make([]int, 2, 4), nil},
	{make([]int, 2, 4), []int{}},
	{make([]int, 2, 4), []int{22}},
	{make([]int, 2, 4), []int{22, 33, 44}},
}

func TestAppend(t *testing.T) {
	for i, test := range appendTests {
		origLen, extraLen := len(test.orig), len(test.extra)
		want := append(test.orig, test.extra...)
		// Convert extra from []int to []Value.