integration tests: fix issue with eth_call (pass chain config via json file to match geth chain config)

added additional test case: gets balance for a non-existing account without block number

chain.json

@@ -0,0 +1,16 @@
+{
+  "chainId": 4,
+  "homesteadBlock": 1,
+  "eip150Block": 2,
+  "eip150Hash": "0x9b095b36c15eaf13044373aef8ee0bd3a382a5abb92e402afa44b8249c3a90e9",
+  "eip155Block": 3,
+  "eip158Block": 3,
+  "byzantiumBlock": 3,
+  "constantinopleBlock": 3,
+  "petersburgBlock": 3,
+  "istanbulBlock": 3,
+  "clique": {
+    "period": 15,
+    "epoch": 30000
+  }
+}

docker-compose.yml

@@ -54,12 +54,17 @@ services:
       IPLD_POSTGRAPHILEPATH: http://graphql:5000
       ETH_SERVER_HTTPPATH: 0.0.0.0:8081
       VDB_COMMAND: "serve"
+      ETH_CHAIN_CONFIG: "/tmp/chain.json"
       DATABASE_NAME: "vulcanize_public"
       DATABASE_HOSTNAME: "db"
       DATABASE_PORT: 5432
       DATABASE_USER: "vdbm"
       DATABASE_PASSWORD: "password"
       ETH_CHAIN_ID: 4
+    volumes:
+    - type: bind
+      source: ./chain.json
+      target: /tmp/chain.json
     ports:
      - "127.0.0.1:8081:8081"
 

pkg/eth/api.go

@@ -644,6 +644,10 @@ func (pea *PublicEthAPI) GetBalance(ctx context.Context, address common.Address,
 			return res, nil
 		}
 	}
+	if err == sql.ErrNoRows {
+		return (*hexutil.Big)(big.NewInt(0)), nil
+	}
+
 	return nil, err
 }
 
@@ -680,6 +684,9 @@ func (pea *PublicEthAPI) GetStorageAt(ctx context.Context, address common.Addres
 			return res, nil
 		}
 	}
+	if err == sql.ErrNoRows {
+		return make([]byte, 32), nil
+	}
 	return nil, err
 }
 

test/integration_test.go

@@ -32,8 +32,10 @@ var _ = Describe("Integration test", func() {
 
 	var contract *integration.ContractDeployed
 	var erc20TotalSupply *big.Int
+	var tx *integration.Tx
 	var bigIntResult bool
 	var contractErr error
+	var txErr error
 	sleepInterval := 2 * time.Second
 
 	Describe("get Block", func() {
@@ -196,7 +198,7 @@ var _ = Describe("Integration test", func() {
 		})
 	})
 
-	Describe("", func() {
+	Describe("CodeAt", func() {
 		BeforeEach(func() {
 			contract, contractErr = integration.DeployContract()
 			time.Sleep(sleepInterval)
@@ -244,7 +246,10 @@ var _ = Describe("Integration test", func() {
 
 	Describe("Get balance", func() {
 		address := "0x1111111111111111111111111111111111111112"
-		tx, txErr := integration.SendEth(address, "0.01")
+		BeforeEach(func() {
+			tx, txErr = integration.SendEth(address, "0.01")
+			time.Sleep(sleepInterval)
+		})
 
 		It("gets balance for an account with eth without block number", func() {
 			Expect(txErr).ToNot(HaveOccurred())
@@ -277,6 +282,17 @@ var _ = Describe("Integration test", func() {
 			ipldBalance, err := ipldClient.BalanceAt(ctx, common.HexToAddress(address), big.NewInt(int64(tx.BlockNumber-1)))
 			Expect(err).ToNot(HaveOccurred())
 
+			Expect(gethBalance).To(Equal(ipldBalance))
+		})
+		It("gets balance for a non-existing account without block number", func() {
+			Expect(txErr).ToNot(HaveOccurred())
+
+			gethBalance, err := gethClient.BalanceAt(ctx, common.HexToAddress(nonExistingAddress), nil)
+			Expect(err).ToNot(HaveOccurred())
+
+			ipldBalance, err := ipldClient.BalanceAt(ctx, common.HexToAddress(nonExistingAddress), nil)
+			Expect(err).ToNot(HaveOccurred())
+
 			Expect(gethBalance).To(Equal(ipldBalance))
 		})
 	})
@@ -323,6 +339,17 @@ var _ = Describe("Integration test", func() {
 			Expect(err).ToNot(HaveOccurred())
 			Expect(gethStorage).To(Equal(ipldStorage))
 		})
+		It("gets storage for non-existing account", func() {
+			totalSupplyIndex := "0x2"
+
+			gethStorage, err := gethClient.StorageAt(ctx, common.HexToAddress(nonExistingAddress), common.HexToHash(totalSupplyIndex), big.NewInt(int64(contract.BlockNumber)))
+			Expect(err).ToNot(HaveOccurred())
+
+			ipldStorage, err := ipldClient.StorageAt(ctx, common.HexToAddress(nonExistingAddress), common.HexToHash(totalSupplyIndex), big.NewInt(int64(contract.BlockNumber)))
+
+			Expect(err).ToNot(HaveOccurred())
+			Expect(gethStorage).To(Equal(ipldStorage))
+		})
 	})
 
 	Describe("eth call", func() {