diff --git a/jethre/jeth.go b/jethre/jeth.go
index 4a3557a8fb..2d02107736 100644
--- a/jethre/jeth.go
+++ b/jethre/jeth.go
@@ -15,6 +15,22 @@ type jeth struct {
 	toVal func(v interface{}) otto.Value
 }
 
+func (self *jeth) IsMining(call otto.FunctionCall) otto.Value {
+	return self.toVal(self.xeth.IsMining())
+}
+
+func (self *jeth) IsListening(call otto.FunctionCall) otto.Value {
+	return self.toVal(self.xeth.IsListening())
+}
+
+func (self *jeth) IsContract(call otto.FunctionCall) otto.Value {
+	address, err := call.Argument(0).ToString()
+	if err != nil {
+		return otto.UndefinedValue()
+	}
+	return self.toVal(self.xeth.IsContract(address))
+}
+
 func (self *jeth) GetCoinbase(call otto.FunctionCall) otto.Value {
 	return self.toVal(self.xeth.Coinbase())
 }
diff --git a/jethre/jethre_test.go b/jethre/jethre_test.go
index 6e51a08fa9..61ce130914 100644
--- a/jethre/jethre_test.go
+++ b/jethre/jethre_test.go
@@ -10,13 +10,23 @@ import (
 )
 
 func TestJEthRE(t *testing.T) {
+
+	err := os.MkdirAll("/tmp/eth/data/", os.ModePerm)
+	if err != nil {
+		t.Errorf("%v", err)
+		return
+	}
+
 	ethereum, err := eth.New(&eth.Config{
 		DataDir:  "/tmp/eth",
 		KeyStore: "file",
 	})
-	// os.WriteFile("/tmp/eth/default.addr", []byte("25ec29286951d5acc52a4f4d631f479c1002f97"))
-	ethutil.WriteFile("/tmp/eth/default.prv", []byte("946d0fe6dd95ef5476dd1fd204626b59c973bd72ffac4a108827ef488465cc68"))
+	if err != nil {
+		t.Errorf("%v", err)
+		return
+	}
 
+	err = ethutil.WriteFile("/tmp/eth/default.prv", []byte("946d0fe6dd95ef5476dd1fd204626b59c973bd72ffac4a108827ef488465cc68"))
 	if err != nil {
 		t.Errorf("%v", err)
 		return
@@ -29,17 +39,112 @@ func TestJEthRE(t *testing.T) {
 	if err != nil {
 		t.Errorf("expected no error, got %v", err)
 	}
+
 	pp, err := jethre.PrettyPrint(val)
 	if err != nil {
 		t.Errorf("%v", err)
 	}
+
 	if !val.IsString() {
 		t.Errorf("incorrect type, expected string, got %v: %v", val, pp)
 	}
 	strVal, _ := val.ToString()
-
 	expected := "0x25ec29286951d5acc52a4f4d631f479c1002f97b"
 	if strVal != expected {
 		t.Errorf("incorrect result, expected %s, got %v", expected, strVal)
 	}
+
+	// should get current block
+	// val, err = jethre.Run("eth.getBlock()")
+	// if err != nil {
+	// 	t.Errorf("expected no error, got %v", err)
+	// }
+
+	fn := "/tmp/eth/data/blockchain.0"
+	val, err = jethre.Run("eth.export(\"" + fn + "\")")
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	}
+	if _, err = os.Stat(fn); err != nil {
+		t.Errorf("expected no error on file, got %v", err)
+	}
+
+	ethereum, err = eth.New(&eth.Config{
+		DataDir:  "/tmp/eth1",
+		KeyStore: "file",
+	})
+	val, err = jethre.Run("eth.import(\"" + fn + "\")")
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	}
+
+	// var val0 otto.Value
+
+	// should get current block
+	// val0, err = jethre.Run("eth.getBlock()")
+	// if err != nil {
+	// 	t.Errorf("expected no error, got %v", err)
+	// }
+
+	// if v0 != v1 {
+	// 	t.Errorf("expected same head after export-import, got %v (!=%v)", v1, v0)
+	// }
+
+	ethereum.Start()
+	// FIXME:
+	// ethereum.Stop causes panic: runtime error: invalid memory address or nil pointer
+	// github.com/ethereum/go-ethereum/eth.(*Ethereum).Stop(0xc208f46270)
+	//         /Users/tron/Work/ethereum/go/src/github.com/ethereum/go-ethereum/eth/backend.go:292 +0xdc
+	// defer ethereum.Stop()
+
+	val, err = jethre.Run("eth.isMining()")
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	}
+	var mining bool
+	mining, err = val.ToBoolean()
+	if err != nil {
+		t.Errorf("expected boolean, got %v", err)
+	}
+	if mining {
+		t.Errorf("expected false (not mining), got true")
+	}
+
+	val, err = jethre.Run("eth.setMining(true)")
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	}
+	mining, _ = val.ToBoolean()
+	if !mining {
+		t.Errorf("expected true (mining), got false")
+	}
+	val, err = jethre.Run("eth.isMining()")
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	}
+	mining, err = val.ToBoolean()
+	if err != nil {
+		t.Errorf("expected boolean, got %v", err)
+	}
+	if !mining {
+		t.Errorf("expected true (mining), got false")
+	}
+
+	val, err = jethre.Run("eth.setMining(true)")
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	}
+	mining, _ = val.ToBoolean()
+	if !mining {
+		t.Errorf("expected true (mining), got false")
+	}
+
+	val, err = jethre.Run("eth.setMining(false)")
+	if err != nil {
+		t.Errorf("expected no error, got %v", err)
+	}
+	mining, _ = val.ToBoolean()
+	if mining {
+		t.Errorf("expected false (not mining), got true")
+	}
 }