5 files changed, 147 insertions, 0 deletions
diff --git a/tests/helper/common.go b/tests/helper/common.go
new file mode 100644
index 000000000..3d539ebb0
--- /dev/null
+++ b/tests/helper/common.go
@@ -0,0 +1,11 @@
+package helper
+
+import "github.com/ethereum/eth-go/ethutil"
+
+func FromHex(h string) []byte {
+	if ethutil.IsHex(h) {
+		h = h[2:]
+	}
+
+	return ethutil.Hex2Bytes(h)
+}
diff --git a/tests/helper/http.go b/tests/helper/http.go
new file mode 100644
index 000000000..b379695d0
--- /dev/null
+++ b/tests/helper/http.go
@@ -0,0 +1,24 @@
+package helper
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"net/http"
+)
+
+func CreateTests(uri string, value interface{}) error {
+	resp, err := http.Get(uri)
+	if err != nil {
+		panic(err)
+	}
+	defer resp.Body.Close()
+
+	data, err := ioutil.ReadAll(resp.Body)
+
+	err = json.Unmarshal(data, &value)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/tests/helper/init.go b/tests/helper/init.go
new file mode 100644
index 000000000..1f2ee208a
--- /dev/null
+++ b/tests/helper/init.go
@@ -0,0 +1,15 @@
+package helper
+
+import (
+	"log"
+	"os"
+
+	"github.com/ethereum/eth-go/ethlog"
+	"github.com/ethereum/eth-go/ethutil"
+)
+
+func init() {
+	ethlog.AddLogSystem(ethlog.NewStdLogSystem(os.Stdout, log.LstdFlags, ethlog.LogLevel(4)))
+
+	ethutil.ReadConfig(".ethtest", "/tmp/ethtest", "")
+}
diff --git a/tests/helper/trie.go b/tests/helper/trie.go
new file mode 100644
index 000000000..af828685c
--- /dev/null
+++ b/tests/helper/trie.go
@@ -0,0 +1,31 @@
+package helper
+
+import "github.com/ethereum/eth-go/ethtrie"
+
+type MemDatabase struct {
+	db map[string][]byte
+}
+
+func NewMemDatabase() (*MemDatabase, error) {
+	db := &MemDatabase{db: make(map[string][]byte)}
+	return db, nil
+}
+func (db *MemDatabase) Put(key []byte, value []byte) {
+	db.db[string(key)] = value
+}
+func (db *MemDatabase) Get(key []byte) ([]byte, error) {
+	return db.db[string(key)], nil
+}
+func (db *MemDatabase) Delete(key []byte) error {
+	delete(db.db, string(key))
+	return nil
+}
+func (db *MemDatabase) Print()              {}
+func (db *MemDatabase) Close()              {}
+func (db *MemDatabase) LastKnownTD() []byte { return nil }
+
+func NewTrie() *ethtrie.Trie {
+	db, _ := NewMemDatabase()
+
+	return ethtrie.New(db, "")
+}
diff --git a/tests/helper/vm.go b/tests/helper/vm.go
new file mode 100644
index 000000000..49a0bfeae
--- /dev/null
+++ b/tests/helper/vm.go
@@ -0,0 +1,66 @@
+package helper
+
+import (
+	"fmt"
+	"math/big"
+
+	"github.com/ethereum/eth-go/ethstate"
+	"github.com/ethereum/eth-go/ethtrie"
+	"github.com/ethereum/eth-go/ethutil"
+	"github.com/ethereum/eth-go/ethvm"
+)
+
+type Env struct {
+	state *ethstate.State
+
+	origin   []byte
+	parent   []byte
+	coinbase []byte
+
+	number     *big.Int
+	time       int64
+	difficulty *big.Int
+}
+
+func NewEnv(state *ethstate.State) *Env {
+	return &Env{
+		state: state,
+	}
+}
+
+func NewEnvFromMap(state *ethstate.State, envValues map[string]string, exeValues map[string]string) *Env {
+	env := NewEnv(state)
+
+	env.origin = ethutil.Hex2Bytes(exeValues["caller"])
+	env.parent = ethutil.Hex2Bytes(envValues["previousHash"])
+	env.coinbase = ethutil.Hex2Bytes(envValues["currentCoinbase"])
+	env.number = ethutil.Big(envValues["currentNumber"])
+	env.time = ethutil.Big(envValues["currentTime"]).Int64()
+
+	return env
+}
+
+func (self *Env) Origin() []byte        { return self.origin }
+func (self *Env) BlockNumber() *big.Int { return self.number }
+func (self *Env) PrevHash() []byte      { return self.parent }
+func (self *Env) Coinbase() []byte      { return self.coinbase }
+func (self *Env) Time() int64           { return self.time }
+func (self *Env) Difficulty() *big.Int  { return self.difficulty }
+func (self *Env) BlockHash() []byte     { return nil }
+
+// This is likely to fail if anything ever gets looked up in the state trie :-)
+func (self *Env) State() *ethstate.State { return ethstate.New(ethtrie.New(nil, "")) }
+
+func RunVm(state *ethstate.State, env, exec map[string]string) ([]byte, *big.Int) {
+	caller := state.NewStateObject(ethutil.Hex2Bytes(exec["caller"]))
+	callee := state.GetStateObject(ethutil.Hex2Bytes(exec["address"]))
+	closure := ethvm.NewClosure(nil, caller, callee, callee.Code, ethutil.Big(exec["gas"]), ethutil.Big(exec["gasPrice"]))
+
+	vm := ethvm.New(NewEnvFromMap(state, env, exec), ethvm.DebugVmTy)
+	ret, _, e := closure.Call(vm, nil)
+	if e != nil {
+		fmt.Println(e)
+	}
+
+	return ret, closure.Gas
+}