150 lines
3.7 KiB
Go
150 lines
3.7 KiB
Go
package bencode
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import (
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"bytes"
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"io"
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"math/big"
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"reflect"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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type random_decode_test struct {
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data string
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expected interface{}
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}
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var random_decode_tests = []random_decode_test{
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{"i57e", int64(57)},
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{"i-9223372036854775808e", int64(-9223372036854775808)},
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{"5:hello", "hello"},
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{"29:unicode test проверка", "unicode test проверка"},
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{"d1:ai5e1:b5:helloe", map[string]interface{}{"a": int64(5), "b": "hello"}},
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{"li5ei10ei15ei20e7:bencodee",
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[]interface{}{int64(5), int64(10), int64(15), int64(20), "bencode"}},
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{"ldedee", []interface{}{map[string]interface{}{}, map[string]interface{}{}}},
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{"le", []interface{}{}},
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{"i604919719469385652980544193299329427705624352086e", func() *big.Int {
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ret, _ := big.NewInt(-1).SetString("604919719469385652980544193299329427705624352086", 10)
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return ret
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}()},
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{"d1:rd6:\xd4/\xe2F\x00\x01e1:t3:\x9a\x87\x011:v4:TR%=1:y1:re", map[string]interface{}{
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"r": map[string]interface{}{},
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"t": "\x9a\x87\x01",
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"v": "TR%=",
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"y": "r",
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}},
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}
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func TestRandomDecode(t *testing.T) {
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for _, test := range random_decode_tests {
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var value interface{}
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err := Unmarshal([]byte(test.data), &value)
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if err != nil {
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t.Error(err, test.data)
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continue
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}
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assert.EqualValues(t, test.expected, value)
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}
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}
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func TestLoneE(t *testing.T) {
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var v int
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err := Unmarshal([]byte("e"), &v)
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se := err.(*SyntaxError)
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require.EqualValues(t, 0, se.Offset)
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}
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func TestDecoderConsecutive(t *testing.T) {
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d := NewDecoder(bytes.NewReader([]byte("i1ei2e")))
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var i int
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err := d.Decode(&i)
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require.NoError(t, err)
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require.EqualValues(t, 1, i)
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err = d.Decode(&i)
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require.NoError(t, err)
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require.EqualValues(t, 2, i)
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err = d.Decode(&i)
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require.Equal(t, io.EOF, err)
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}
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func TestDecoderConsecutiveDicts(t *testing.T) {
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bb := bytes.NewBufferString("d4:herp4:derped3:wat1:ke17:oh baby a triple!")
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d := NewDecoder(bb)
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assert.EqualValues(t, "d4:herp4:derped3:wat1:ke17:oh baby a triple!", bb.Bytes())
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assert.EqualValues(t, 0, d.Offset)
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var m map[string]interface{}
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require.NoError(t, d.Decode(&m))
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assert.Len(t, m, 1)
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assert.Equal(t, "derp", m["herp"])
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assert.Equal(t, "d3:wat1:ke17:oh baby a triple!", bb.String())
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assert.EqualValues(t, 14, d.Offset)
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require.NoError(t, d.Decode(&m))
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assert.Equal(t, "k", m["wat"])
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assert.Equal(t, "17:oh baby a triple!", bb.String())
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assert.EqualValues(t, 24, d.Offset)
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var s string
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require.NoError(t, d.Decode(&s))
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assert.Equal(t, "oh baby a triple!", s)
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assert.EqualValues(t, 44, d.Offset)
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}
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func check_error(t *testing.T, err error) {
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if err != nil {
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t.Error(err)
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}
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}
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func assert_equal(t *testing.T, x, y interface{}) {
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if !reflect.DeepEqual(x, y) {
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t.Errorf("got: %v (%T), expected: %v (%T)\n", x, x, y, y)
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}
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}
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type unmarshaler_int struct {
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x int
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}
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func (this *unmarshaler_int) UnmarshalBencode(data []byte) error {
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return Unmarshal(data, &this.x)
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}
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type unmarshaler_string struct {
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x string
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}
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func (this *unmarshaler_string) UnmarshalBencode(data []byte) error {
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this.x = string(data)
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return nil
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}
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func TestUnmarshalerBencode(t *testing.T) {
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var i unmarshaler_int
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var ss []unmarshaler_string
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check_error(t, Unmarshal([]byte("i71e"), &i))
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assert_equal(t, i.x, 71)
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check_error(t, Unmarshal([]byte("l5:hello5:fruit3:waye"), &ss))
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assert_equal(t, ss[0].x, "5:hello")
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assert_equal(t, ss[1].x, "5:fruit")
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assert_equal(t, ss[2].x, "3:way")
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}
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func TestIgnoreUnmarshalTypeError(t *testing.T) {
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s := struct {
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Ignore int `bencode:",ignore_unmarshal_type_error"`
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Normal int
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}{}
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require.Error(t, Unmarshal([]byte("d6:Normal5:helloe"), &s))
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assert.Nil(t, Unmarshal([]byte("d6:Ignore5:helloe"), &s))
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require.Nil(t, Unmarshal([]byte("d6:Ignorei42ee"), &s))
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assert.EqualValues(t, 42, s.Ignore)
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}
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