package stackitem import ( "encoding/base64" "math/big" "testing" "github.com/stretchr/testify/assert" "github.com/stretchr/testify/require" ) func getTestDecodeFunc(js string, expected ...interface{}) func(t *testing.T) { return func(t *testing.T) { actual, err := FromJSON([]byte(js)) if expected[0] == nil { require.Error(t, err) return } require.NoError(t, err) require.Equal(t, Make(expected[0]), actual) if len(expected) == 1 { encoded, err := ToJSON(actual) require.NoError(t, err) require.Equal(t, js, string(encoded)) } } } func TestFromToJSON(t *testing.T) { var testBase64 = base64.StdEncoding.EncodeToString([]byte("test")) t.Run("ByteString", func(t *testing.T) { t.Run("Empty", getTestDecodeFunc(`""`, []byte{})) t.Run("Base64", getTestDecodeFunc(`"`+testBase64+`"`, "test")) }) t.Run("BigInteger", func(t *testing.T) { t.Run("ZeroFloat", getTestDecodeFunc(`12.000`, 12, nil)) t.Run("NonZeroFloat", getTestDecodeFunc(`12.01`, nil)) t.Run("Negative", getTestDecodeFunc(`-4`, -4)) t.Run("Positive", getTestDecodeFunc(`123`, 123)) }) t.Run("Bool", func(t *testing.T) { t.Run("True", getTestDecodeFunc(`true`, true)) t.Run("False", getTestDecodeFunc(`false`, false)) }) t.Run("Null", getTestDecodeFunc(`null`, Null{})) t.Run("Array", func(t *testing.T) { t.Run("Empty", getTestDecodeFunc(`[]`, NewArray([]Item{}))) t.Run("Simple", getTestDecodeFunc((`[1,"`+testBase64+`",true,null]`), NewArray([]Item{NewBigInteger(big.NewInt(1)), NewByteArray([]byte("test")), NewBool(true), Null{}}))) t.Run("Nested", getTestDecodeFunc(`[[],[{},null]]`, NewArray([]Item{NewArray([]Item{}), NewArray([]Item{NewMap(), Null{}})}))) }) t.Run("Map", func(t *testing.T) { small := NewMap() small.Add(NewByteArray([]byte("a")), NewBigInteger(big.NewInt(3))) large := NewMap() large.Add(NewByteArray([]byte("3")), small) large.Add(NewByteArray([]byte("arr")), NewArray([]Item{NewByteArray([]byte("test"))})) t.Run("Empty", getTestDecodeFunc(`{}`, NewMap())) t.Run("Small", getTestDecodeFunc(`{"a":3}`, small)) t.Run("Big", getTestDecodeFunc(`{"3":{"a":3},"arr":["`+testBase64+`"]}`, large)) }) t.Run("Invalid", func(t *testing.T) { t.Run("Empty", getTestDecodeFunc(``, nil)) t.Run("InvalidString", getTestDecodeFunc(`"not a base64"`, nil)) t.Run("InvalidArray", getTestDecodeFunc(`[}`, nil)) t.Run("InvalidMap", getTestDecodeFunc(`{]`, nil)) t.Run("InvalidMapValue", getTestDecodeFunc(`{"a":{]}`, nil)) t.Run("AfterArray", getTestDecodeFunc(`[]XX`, nil)) t.Run("EncodeBigInteger", func(t *testing.T) { item := NewBigInteger(big.NewInt(MaxAllowedInteger + 1)) _, err := ToJSON(item) require.Error(t, err) }) t.Run("EncodeInvalidItemType", func(t *testing.T) { item := NewPointer(1, []byte{1, 2, 3}) _, err := ToJSON(item) require.Error(t, err) }) t.Run("BigByteArray", func(t *testing.T) { l := base64.StdEncoding.DecodedLen(MaxSize + 8) require.True(t, l < MaxSize) // check if test makes sense item := NewByteArray(make([]byte, l)) _, err := ToJSON(item) require.Error(t, err) }) t.Run("BigNestedArray", getTestDecodeFunc(`[[[[[[[[[[[]]]]]]]]]]]`, nil)) t.Run("EncodeRecursive", func(t *testing.T) { // add this item to speed up test a bit item := NewByteArray(make([]byte, MaxSize/100)) t.Run("Array", func(t *testing.T) { arr := NewArray([]Item{item}) arr.Append(arr) _, err := ToJSON(arr) require.Error(t, err) }) t.Run("Map", func(t *testing.T) { m := NewMap() m.Add(item, m) _, err := ToJSON(m) require.Error(t, err) }) }) }) } // This test is taken from the C# code // https://github.com/neo-project/neo/blob/master/tests/neo.UnitTests/VM/UT_Helper.cs#L30 func TestToJSONWithTypeCompat(t *testing.T) { items := []Item{ Make(5), Make("hello world"), Make([]byte{1, 2, 3}), Make(true), } // Note: we use `Equal` and not `JSONEq` because there are no spaces and maps so the order is well-defined. s, err := ToJSONWithTypes(items[0]) assert.NoError(t, err) assert.Equal(t, `{"type":"Integer","value":"5"}`, string(s)) s, err = ToJSONWithTypes(items[1]) assert.NoError(t, err) assert.Equal(t, `{"type":"ByteString","value":"aGVsbG8gd29ybGQ="}`, string(s)) s, err = ToJSONWithTypes(items[2]) assert.NoError(t, err) assert.Equal(t, `{"type":"ByteString","value":"AQID"}`, string(s)) s, err = ToJSONWithTypes(items[3]) assert.NoError(t, err) assert.Equal(t, `{"type":"Boolean","value":true}`, string(s)) s, err = ToJSONWithTypes(NewArray(items)) assert.NoError(t, err) assert.Equal(t, `{"type":"Array","value":[{"type":"Integer","value":"5"},{"type":"ByteString","value":"aGVsbG8gd29ybGQ="},{"type":"ByteString","value":"AQID"},{"type":"Boolean","value":true}]}`, string(s)) item := NewMap() item.Add(Make(1), NewPointer(0, []byte{0})) s, err = ToJSONWithTypes(item) assert.NoError(t, err) assert.Equal(t, `{"type":"Map","value":[{"key":{"type":"Integer","value":"1"},"value":{"type":"Pointer","value":0}}]}`, string(s)) } func TestToJSONWithTypes(t *testing.T) { testCases := []struct { name string item Item result string }{ {"Null", Null{}, `{"type":"Any"}`}, {"Integer", NewBigInteger(big.NewInt(42)), `{"type":"Integer","value":"42"}`}, {"ByteString", NewByteArray([]byte{1, 2, 3}), `{"type":"ByteString","value":"AQID"}`}, {"Buffer", NewBuffer([]byte{1, 2, 3}), `{"type":"Buffer","value":"AQID"}`}, {"BoolTrue", NewBool(true), `{"type":"Boolean","value":true}`}, {"BoolFalse", NewBool(false), `{"type":"Boolean","value":false}`}, {"Struct", NewStruct([]Item{Make(11)}), `{"type":"Struct","value":[{"type":"Integer","value":"11"}]}`}, } for _, tc := range testCases { t.Run(tc.name, func(t *testing.T) { s, err := ToJSONWithTypes(tc.item) require.NoError(t, err) require.Equal(t, tc.result, string(s)) }) } t.Run("Invalid", func(t *testing.T) { t.Run("RecursiveArray", func(t *testing.T) { arr := NewArray(nil) arr.value = []Item{Make(5), arr, Make(true)} _, err := ToJSONWithTypes(arr) require.Error(t, err) }) t.Run("RecursiveMap", func(t *testing.T) { m := NewMap() m.Add(Make(3), Make(true)) m.Add(Make(5), m) _, err := ToJSONWithTypes(m) require.Error(t, err) }) }) }