Handle events

- Adds interfaces for developers to build handlers that update data in
response to log events
- Resolves #29

integration_test/geth_blockchain_test.go

@@ -1,29 +1,21 @@
 package integration_test
 
 import (
-	"io/ioutil"
-	"log"
-
 	. "github.com/onsi/ginkgo"
 	. "github.com/onsi/gomega"
-	"github.com/vulcanize/vulcanizedb/pkg/config"
+	"github.com/vulcanize/vulcanizedb/pkg/datastore/inmemory"
 	"github.com/vulcanize/vulcanizedb/pkg/geth"
 	"github.com/vulcanize/vulcanizedb/pkg/history"
-	"github.com/vulcanize/vulcanizedb/pkg/repositories/inmemory"
+	"github.com/vulcanize/vulcanizedb/test_config"
 )
 
-func init() {
-	log.SetOutput(ioutil.Discard)
-}
-
 var _ = Describe("Reading from the Geth blockchain", func() {
 
 	var blockchain *geth.Blockchain
 	var inMemory *inmemory.InMemory
 
 	BeforeEach(func() {
-		cfg, _ := config.NewConfig("private")
-		blockchain = geth.NewBlockchain(cfg.Client.IPCPath)
+		blockchain = geth.NewBlockchain(test_config.TestClientConfig.IPCPath)
 		inMemory = inmemory.NewInMemory()
 	})
 
@@ -52,8 +44,8 @@ var _ = Describe("Reading from the Geth blockchain", func() {
 		devNetworkNodeId := float64(1)
 
 		Expect(node.GenesisBlock).To(Equal(devNetworkGenesisBlock))
-		Expect(node.NetworkId).To(Equal(devNetworkNodeId))
-		Expect(len(node.Id)).To(Equal(128))
+		Expect(node.NetworkID).To(Equal(devNetworkNodeId))
+		Expect(len(node.ID)).To(Equal(128))
 		Expect(node.ClientName).To(ContainSubstring("Geth"))
 
 		close(done)