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136 lines
3.5 KiB
136 lines
3.5 KiB
package merkle
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import (
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/tendermint/go-amino"
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cmn "github.com/tendermint/tendermint/libs/common"
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)
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const ProofOpDomino = "test:domino"
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// Expects given input, produces given output.
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// Like the game dominos.
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type DominoOp struct {
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key string // unexported, may be empty
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Input string
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Output string
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}
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func NewDominoOp(key, input, output string) DominoOp {
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return DominoOp{
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key: key,
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Input: input,
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Output: output,
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}
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}
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func DominoOpDecoder(pop ProofOp) (ProofOperator, error) {
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if pop.Type != ProofOpDomino {
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panic("unexpected proof op type")
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}
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var op DominoOp // a bit strange as we'll discard this, but it works.
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err := amino.UnmarshalBinaryLengthPrefixed(pop.Data, &op)
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if err != nil {
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return nil, cmn.ErrorWrap(err, "decoding ProofOp.Data into SimpleValueOp")
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}
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return NewDominoOp(string(pop.Key), op.Input, op.Output), nil
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}
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func (dop DominoOp) ProofOp() ProofOp {
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bz := amino.MustMarshalBinaryLengthPrefixed(dop)
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return ProofOp{
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Type: ProofOpDomino,
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Key: []byte(dop.key),
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Data: bz,
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}
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}
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func (dop DominoOp) Run(input [][]byte) (output [][]byte, err error) {
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if len(input) != 1 {
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return nil, cmn.NewError("Expected input of length 1")
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}
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if string(input[0]) != dop.Input {
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return nil, cmn.NewError("Expected input %v, got %v",
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dop.Input, string(input[0]))
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}
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return [][]byte{[]byte(dop.Output)}, nil
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}
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func (dop DominoOp) GetKey() []byte {
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return []byte(dop.key)
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}
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//----------------------------------------
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func TestProofOperators(t *testing.T) {
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var err error
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// ProofRuntime setup
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// TODO test this somehow.
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// prt := NewProofRuntime()
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// prt.RegisterOpDecoder(ProofOpDomino, DominoOpDecoder)
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// ProofOperators setup
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op1 := NewDominoOp("KEY1", "INPUT1", "INPUT2")
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op2 := NewDominoOp("KEY2", "INPUT2", "INPUT3")
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op3 := NewDominoOp("", "INPUT3", "INPUT4")
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op4 := NewDominoOp("KEY4", "INPUT4", "OUTPUT4")
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// Good
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popz := ProofOperators([]ProofOperator{op1, op2, op3, op4})
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err = popz.Verify(bz("OUTPUT4"), "/KEY4/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.Nil(t, err)
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err = popz.VerifyValue(bz("OUTPUT4"), "/KEY4/KEY2/KEY1", bz("INPUT1"))
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assert.Nil(t, err)
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// BAD INPUT
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err = popz.Verify(bz("OUTPUT4"), "/KEY4/KEY2/KEY1", [][]byte{bz("INPUT1_WRONG")})
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assert.NotNil(t, err)
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err = popz.VerifyValue(bz("OUTPUT4"), "/KEY4/KEY2/KEY1", bz("INPUT1_WRONG"))
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assert.NotNil(t, err)
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// BAD KEY 1
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err = popz.Verify(bz("OUTPUT4"), "/KEY3/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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// BAD KEY 2
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err = popz.Verify(bz("OUTPUT4"), "KEY4/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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// BAD KEY 3
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err = popz.Verify(bz("OUTPUT4"), "/KEY4/KEY2/KEY1/", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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// BAD KEY 4
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err = popz.Verify(bz("OUTPUT4"), "//KEY4/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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// BAD OUTPUT 1
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err = popz.Verify(bz("OUTPUT4_WRONG"), "/KEY4/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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// BAD OUTPUT 2
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err = popz.Verify(bz(""), "/KEY4/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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// BAD POPZ 1
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popz = []ProofOperator{op1, op2, op4}
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err = popz.Verify(bz("OUTPUT4"), "/KEY4/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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// BAD POPZ 2
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popz = []ProofOperator{op4, op3, op2, op1}
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err = popz.Verify(bz("OUTPUT4"), "/KEY4/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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// BAD POPZ 3
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popz = []ProofOperator{}
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err = popz.Verify(bz("OUTPUT4"), "/KEY4/KEY2/KEY1", [][]byte{bz("INPUT1")})
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assert.NotNil(t, err)
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}
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func bz(s string) []byte {
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return []byte(s)
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}
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