283 lines
12 KiB
Go
283 lines
12 KiB
Go
package rlp
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import (
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"bytes"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"math/big"
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"testing"
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)
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type testEncoder struct {
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err error
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}
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func (e *testEncoder) EncodeRLP(w io.Writer) error {
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if e == nil {
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w.Write([]byte{0, 0, 0, 0})
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} else if e.err != nil {
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return e.err
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} else {
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w.Write([]byte{0, 1, 0, 1, 0, 1, 0, 1, 0, 1})
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}
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return nil
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}
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type byteEncoder byte
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func (e byteEncoder) EncodeRLP(w io.Writer) error {
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w.Write(EmptyList)
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return nil
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}
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type encodableReader struct {
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A, B uint
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}
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func (e *encodableReader) Read(b []byte) (int, error) {
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panic("called")
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}
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var (
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_ = Encoder(&testEncoder{})
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_ = Encoder(byteEncoder(0))
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reader io.Reader = &encodableReader{1, 2}
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)
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type encTest struct {
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val interface{}
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output, error string
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}
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var encTests = []encTest{
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// integers
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{val: uint32(0), output: "80"},
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{val: uint32(127), output: "7F"},
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{val: uint32(128), output: "8180"},
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{val: uint32(256), output: "820100"},
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{val: uint32(1024), output: "820400"},
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{val: uint32(0xFFFFFF), output: "83FFFFFF"},
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{val: uint32(0xFFFFFFFF), output: "84FFFFFFFF"},
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{val: uint64(0xFFFFFFFF), output: "84FFFFFFFF"},
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{val: uint64(0xFFFFFFFFFF), output: "85FFFFFFFFFF"},
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{val: uint64(0xFFFFFFFFFFFF), output: "86FFFFFFFFFFFF"},
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{val: uint64(0xFFFFFFFFFFFFFF), output: "87FFFFFFFFFFFFFF"},
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{val: uint64(0xFFFFFFFFFFFFFFFF), output: "88FFFFFFFFFFFFFFFF"},
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// big integers (should match uint for small values)
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{val: big.NewInt(0), output: "80"},
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{val: big.NewInt(1), output: "01"},
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{val: big.NewInt(127), output: "7F"},
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{val: big.NewInt(128), output: "8180"},
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{val: big.NewInt(256), output: "820100"},
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{val: big.NewInt(1024), output: "820400"},
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{val: big.NewInt(0xFFFFFF), output: "83FFFFFF"},
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{val: big.NewInt(0xFFFFFFFF), output: "84FFFFFFFF"},
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{val: big.NewInt(0xFFFFFFFFFF), output: "85FFFFFFFFFF"},
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{val: big.NewInt(0xFFFFFFFFFFFF), output: "86FFFFFFFFFFFF"},
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{val: big.NewInt(0xFFFFFFFFFFFFFF), output: "87FFFFFFFFFFFFFF"},
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{
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val: big.NewInt(0).SetBytes(unhex("102030405060708090A0B0C0D0E0F2")),
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output: "8F102030405060708090A0B0C0D0E0F2",
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},
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{
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val: big.NewInt(0).SetBytes(unhex("0100020003000400050006000700080009000A000B000C000D000E01")),
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output: "9C0100020003000400050006000700080009000A000B000C000D000E01",
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},
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{
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val: big.NewInt(0).SetBytes(unhex("010000000000000000000000000000000000000000000000000000000000000000")),
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output: "A1010000000000000000000000000000000000000000000000000000000000000000",
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},
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// non-pointer big.Int
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{val: *big.NewInt(0), output: "80"},
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{val: *big.NewInt(0xFFFFFF), output: "83FFFFFF"},
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// negative ints are not supported
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{val: big.NewInt(-1), error: "rlp: cannot encode negative *big.Int"},
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// byte slices, strings
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{val: []byte{}, output: "80"},
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{val: []byte{1, 2, 3}, output: "83010203"},
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{val: "", output: "80"},
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{val: "dog", output: "83646F67"},
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{
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val: "Lorem ipsum dolor sit amet, consectetur adipisicing eli",
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output: "B74C6F72656D20697073756D20646F6C6F722073697420616D65742C20636F6E7365637465747572206164697069736963696E6720656C69",
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},
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{
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val: "Lorem ipsum dolor sit amet, consectetur adipisicing elit",
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output: "B8384C6F72656D20697073756D20646F6C6F722073697420616D65742C20636F6E7365637465747572206164697069736963696E6720656C6974",
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},
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{
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val: "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur mauris magna, suscipit sed vehicula non, iaculis faucibus tortor. Proin suscipit ultricies malesuada. Duis tortor elit, dictum quis tristique eu, ultrices at risus. Morbi a est imperdiet mi ullamcorper aliquet suscipit nec lorem. Aenean quis leo mollis, vulputate elit varius, consequat enim. Nulla ultrices turpis justo, et posuere urna consectetur nec. Proin non convallis metus. Donec tempor ipsum in mauris congue sollicitudin. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Suspendisse convallis sem vel massa faucibus, eget lacinia lacus tempor. Nulla quis ultricies purus. Proin auctor rhoncus nibh condimentum mollis. Aliquam consequat enim at metus luctus, a eleifend purus egestas. Curabitur at nibh metus. Nam bibendum, neque at auctor tristique, lorem libero aliquet arcu, non interdum tellus lectus sit amet eros. Cras rhoncus, metus ac ornare cursus, dolor justo ultrices metus, at ullamcorper volutpat",
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output: "B904004C6F72656D20697073756D20646F6C6F722073697420616D65742C20636F6E73656374657475722061646970697363696E6720656C69742E20437572616269747572206D6175726973206D61676E612C20737573636970697420736564207665686963756C61206E6F6E2C20696163756C697320666175636962757320746F72746F722E2050726F696E20737573636970697420756C74726963696573206D616C6573756164612E204475697320746F72746F7220656C69742C2064696374756D2071756973207472697374697175652065752C20756C7472696365732061742072697375732E204D6F72626920612065737420696D70657264696574206D6920756C6C616D636F7270657220616C6971756574207375736369706974206E6563206C6F72656D2E2041656E65616E2071756973206C656F206D6F6C6C69732C2076756C70757461746520656C6974207661726975732C20636F6E73657175617420656E696D2E204E756C6C6120756C74726963657320747572706973206A7573746F2C20657420706F73756572652075726E6120636F6E7365637465747572206E65632E2050726F696E206E6F6E20636F6E76616C6C6973206D657475732E20446F6E65632074656D706F7220697073756D20696E206D617572697320636F6E67756520736F6C6C696369747564696E2E20566573746962756C756D20616E746520697073756D207072696D697320696E206661756369627573206F726369206C756374757320657420756C74726963657320706F737565726520637562696C69612043757261653B2053757370656E646973736520636F6E76616C6C69732073656D2076656C206D617373612066617563696275732C2065676574206C6163696E6961206C616375732074656D706F722E204E756C6C61207175697320756C747269636965732070757275732E2050726F696E20617563746F722072686F6E637573206E69626820636F6E64696D656E74756D206D6F6C6C69732E20416C697175616D20636F6E73657175617420656E696D206174206D65747573206C75637475732C206120656C656966656E6420707572757320656765737461732E20437572616269747572206174206E696268206D657475732E204E616D20626962656E64756D2C206E6571756520617420617563746F72207472697374697175652C206C6F72656D206C696265726F20616C697175657420617263752C206E6F6E20696E74657264756D2074656C6C7573206C65637475732073697420616D65742065726F732E20437261732072686F6E6375732C206D65747573206163206F726E617265206375727375732C20646F6C6F72206A7573746F20756C747269636573206D657475732C20617420756C6C616D636F7270657220766F6C7574706174",
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},
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// slices
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{val: []uint{}, output: "C0"},
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{val: []uint{1, 2, 3}, output: "C3010203"},
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{
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// [ [], [[]], [ [], [[]] ] ]
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val: []interface{}{[]interface{}{}, [][]interface{}{{}}, []interface{}{[]interface{}{}, [][]interface{}{{}}}},
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output: "C7C0C1C0C3C0C1C0",
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},
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{
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val: []string{"aaa", "bbb", "ccc", "ddd", "eee", "fff", "ggg", "hhh", "iii", "jjj", "kkk", "lll", "mmm", "nnn", "ooo"},
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output: "F83C836161618362626283636363836464648365656583666666836767678368686883696969836A6A6A836B6B6B836C6C6C836D6D6D836E6E6E836F6F6F",
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},
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{
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val: []interface{}{uint(1), uint(0xFFFFFF), []interface{}{[]uint{4, 5, 5}}, "abc"},
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output: "CE0183FFFFFFC4C304050583616263",
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},
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{
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val: [][]string{
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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{"asdf", "qwer", "zxcv"},
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},
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output: "F90200CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376CF84617364668471776572847A786376",
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},
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// structs
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{val: simplestruct{}, output: "C28080"},
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{val: simplestruct{A: 3, B: "foo"}, output: "C50383666F6F"},
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{val: &recstruct{5, nil}, output: "C205C0"},
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{val: &recstruct{5, &recstruct{4, &recstruct{3, nil}}}, output: "C605C404C203C0"},
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// flat
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{val: Flat(uint(1)), error: "rlp.Flat: uint did not encode as list"},
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{val: Flat(simplestruct{A: 3, B: "foo"}), output: "0383666F6F"},
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{
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// value generates more list headers after the Flat
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val: []interface{}{"foo", []uint{1, 2}, Flat([]uint{3, 4}), []uint{5, 6}, "bar"},
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output: "D083666F6FC201020304C2050683626172",
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},
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// nil
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{val: (*uint)(nil), output: "80"},
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{val: (*string)(nil), output: "80"},
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{val: (*[]byte)(nil), output: "80"},
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{val: (*[]string)(nil), output: "C0"},
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{val: (*[]interface{})(nil), output: "C0"},
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{val: (*[]struct{ uint })(nil), output: "C0"},
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{val: (*interface{})(nil), output: "C0"},
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// interfaces
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{val: []io.Reader{reader}, output: "C3C20102"}, // the contained value is a struct
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// Encoder
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{val: (*testEncoder)(nil), output: "00000000"},
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{val: &testEncoder{}, output: "00010001000100010001"},
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{val: &testEncoder{errors.New("test error")}, error: "test error"},
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// verify that pointer method testEncoder.EncodeRLP is called for
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// addressable non-pointer values.
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{val: &struct{ TE testEncoder }{testEncoder{}}, output: "CA00010001000100010001"},
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{val: &struct{ TE testEncoder }{testEncoder{errors.New("test error")}}, error: "test error"},
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// verify the error for non-addressable non-pointer Encoder
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{val: testEncoder{}, error: "rlp: game over: unadressable value of type rlp.testEncoder, EncodeRLP is pointer method"},
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// verify the special case for []byte
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{val: []byteEncoder{0, 1, 2, 3, 4}, output: "C5C0C0C0C0C0"},
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}
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func runEncTests(t *testing.T, f func(val interface{}) ([]byte, error)) {
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for i, test := range encTests {
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output, err := f(test.val)
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if err != nil && test.error == "" {
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t.Errorf("test %d: unexpected error: %v\nvalue %#v\ntype %T",
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i, err, test.val, test.val)
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continue
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}
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if test.error != "" && fmt.Sprint(err) != test.error {
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t.Errorf("test %d: error mismatch\ngot %v\nwant %v\nvalue %#v\ntype %T",
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i, err, test.error, test.val, test.val)
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continue
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}
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if err == nil && !bytes.Equal(output, unhex(test.output)) {
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t.Errorf("test %d: output mismatch:\ngot %X\nwant %s\nvalue %#v\ntype %T",
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i, output, test.output, test.val, test.val)
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}
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}
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}
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func TestEncode(t *testing.T) {
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runEncTests(t, func(val interface{}) ([]byte, error) {
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b := new(bytes.Buffer)
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err := Encode(b, val)
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return b.Bytes(), err
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})
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}
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func TestEncodeToBytes(t *testing.T) {
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runEncTests(t, EncodeToBytes)
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}
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func TestEncodeToReader(t *testing.T) {
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runEncTests(t, func(val interface{}) ([]byte, error) {
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_, r, err := EncodeToReader(val)
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if err != nil {
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return nil, err
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}
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return ioutil.ReadAll(r)
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})
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}
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func TestEncodeToReaderPiecewise(t *testing.T) {
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runEncTests(t, func(val interface{}) ([]byte, error) {
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size, r, err := EncodeToReader(val)
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if err != nil {
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return nil, err
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}
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// read output piecewise
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output := make([]byte, size)
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for start, end := 0, 0; start < size; start = end {
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if remaining := size - start; remaining < 3 {
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end += remaining
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} else {
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end = start + 3
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}
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n, err := r.Read(output[start:end])
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end = start + n
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if err == io.EOF {
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break
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} else if err != nil {
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return nil, err
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}
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}
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return output, nil
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})
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}
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