diff --git a/.travis.yml b/.travis.yml
index 15e6549..c2f385b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,15 @@
+sudo: required
+
 language: php
 
 php:
   - 7.1
 
+before_install:
+  - nvm install 8
+
 install:
+  - npm install -g ganache-cli
   - composer install
 
 notifications:
@@ -14,7 +20,7 @@ notifications:
     on_failure: always
 
 script:
-  -  vendor/bin/phpunit --coverage-clover=coverage.xml
+  - scripts/test.sh
 
 after_success:
     - bash <(curl -s https://codecov.io/bash) -t 8436848f-9a99-4b49-be60-629d7ff9a62c
\ No newline at end of file
diff --git a/scripts/test.sh b/scripts/test.sh
new file mode 100755
index 0000000..6b63d4a
--- /dev/null
+++ b/scripts/test.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+ganache-cli -g 0 -l 0 > /dev/null & 
+ganachecli_pid=$!
+echo "Start ganache-cli pid: $ganachecli_pid"
+
+vendor/bin/phpunit --coverage-clover=coverage.xml
+
+kill -9 $ganachecli_pid
+echo "Kill ganache-cli"
\ No newline at end of file
diff --git a/src/Contract.php b/src/Contract.php
index b5fa933..21ac3a9 100644
--- a/src/Contract.php
+++ b/src/Contract.php
@@ -243,7 +243,7 @@ class Contract
     }
 
     /**
-     * getAbr
+     * getAbi
      * 
      * @return array
      */
@@ -252,6 +252,16 @@ class Contract
         return $this->abi;
     }
 
+    /**
+     * getEthabi
+     * 
+     * @return array
+     */
+    public function getEthabi()
+    {
+        return $this->ethabi;
+    }
+
     /**
      * getEth
      * 
diff --git a/src/Methods/Eth/BlockNumber.php b/src/Methods/Eth/BlockNumber.php
index f402239..7d6d33c 100644
--- a/src/Methods/Eth/BlockNumber.php
+++ b/src/Methods/Eth/BlockNumber.php
@@ -13,6 +13,7 @@ namespace Web3\Methods\Eth;
 
 use InvalidArgumentException;
 use Web3\Methods\EthMethod;
+use Web3\Formatters\BigNumberFormatter;
 
 class BlockNumber extends EthMethod
 {
@@ -35,7 +36,9 @@ class BlockNumber extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/src/Methods/Eth/GasPrice.php b/src/Methods/Eth/GasPrice.php
index 8bef5d4..9218cc1 100644
--- a/src/Methods/Eth/GasPrice.php
+++ b/src/Methods/Eth/GasPrice.php
@@ -13,6 +13,7 @@ namespace Web3\Methods\Eth;
 
 use InvalidArgumentException;
 use Web3\Methods\EthMethod;
+use Web3\Formatters\BigNumberFormatter;
 
 class GasPrice extends EthMethod
 {
@@ -35,7 +36,9 @@ class GasPrice extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/src/Methods/Eth/GetBalance.php b/src/Methods/Eth/GetBalance.php
index 793dad4..007e97b 100644
--- a/src/Methods/Eth/GetBalance.php
+++ b/src/Methods/Eth/GetBalance.php
@@ -18,6 +18,7 @@ use Web3\Validators\QuantityValidator;
 use Web3\Validators\AddressValidator;
 use Web3\Formatters\AddressFormatter;
 use Web3\Formatters\OptionalQuantityFormatter;
+use Web3\Formatters\BigNumberFormatter;
 
 class GetBalance extends EthMethod
 {
@@ -46,7 +47,9 @@ class GetBalance extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/src/Methods/Eth/GetBlockTransactionCountByHash.php b/src/Methods/Eth/GetBlockTransactionCountByHash.php
index 259e160..c8acb87 100644
--- a/src/Methods/Eth/GetBlockTransactionCountByHash.php
+++ b/src/Methods/Eth/GetBlockTransactionCountByHash.php
@@ -15,6 +15,7 @@ use InvalidArgumentException;
 use Web3\Methods\EthMethod;
 use Web3\Validators\BlockHashValidator;
 use Web3\Formatters\HexFormatter;
+use Web3\Formatters\BigNumberFormatter;
 
 class GetBlockTransactionCountByHash extends EthMethod
 {
@@ -41,7 +42,9 @@ class GetBlockTransactionCountByHash extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BignumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/src/Methods/Eth/GetBlockTransactionCountByNumber.php b/src/Methods/Eth/GetBlockTransactionCountByNumber.php
index 064ff08..8b53e77 100644
--- a/src/Methods/Eth/GetBlockTransactionCountByNumber.php
+++ b/src/Methods/Eth/GetBlockTransactionCountByNumber.php
@@ -15,6 +15,7 @@ use InvalidArgumentException;
 use Web3\Methods\EthMethod;
 use Web3\Validators\QuantityValidator;
 use Web3\Formatters\OptionalQuantityFormatter;
+use Web3\Formatters\BigNumberFormatter;
 
 class GetBlockTransactionCountByNumber extends EthMethod
 {
@@ -41,7 +42,9 @@ class GetBlockTransactionCountByNumber extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/src/Methods/Eth/GetTransactionCount.php b/src/Methods/Eth/GetTransactionCount.php
index 6c16d7c..468e078 100644
--- a/src/Methods/Eth/GetTransactionCount.php
+++ b/src/Methods/Eth/GetTransactionCount.php
@@ -18,6 +18,7 @@ use Web3\Validators\QuantityValidator;
 use Web3\Validators\AddressValidator;
 use Web3\Formatters\AddressFormatter;
 use Web3\Formatters\OptionalQuantityFormatter;
+use Web3\Formatters\BigNumberFormatter;
 
 class GetTransactionCount extends EthMethod
 {
@@ -46,7 +47,9 @@ class GetTransactionCount extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/src/Methods/Eth/GetUncleCountByBlockHash.php b/src/Methods/Eth/GetUncleCountByBlockHash.php
index 33da325..625635c 100644
--- a/src/Methods/Eth/GetUncleCountByBlockHash.php
+++ b/src/Methods/Eth/GetUncleCountByBlockHash.php
@@ -15,6 +15,7 @@ use InvalidArgumentException;
 use Web3\Methods\EthMethod;
 use Web3\Validators\BlockHashValidator;
 use Web3\Formatters\HexFormatter;
+use Web3\Formatters\BigNumberFormatter;
 
 class GetUncleCountByBlockHash extends EthMethod
 {
@@ -41,7 +42,9 @@ class GetUncleCountByBlockHash extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/src/Methods/Eth/GetUncleCountByBlockNumber.php b/src/Methods/Eth/GetUncleCountByBlockNumber.php
index 5cb5569..dc4ad9f 100644
--- a/src/Methods/Eth/GetUncleCountByBlockNumber.php
+++ b/src/Methods/Eth/GetUncleCountByBlockNumber.php
@@ -16,6 +16,7 @@ use Web3\Methods\EthMethod;
 use Web3\Validators\TagValidator;
 use Web3\Validators\QuantityValidator;
 use Web3\Formatters\OptionalQuantityFormatter;
+use Web3\Formatters\BigNumberFormatter;
 
 class GetUncleCountByBlockNumber extends EthMethod
 {
@@ -44,7 +45,9 @@ class GetUncleCountByBlockNumber extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/src/Methods/Eth/Hashrate.php b/src/Methods/Eth/Hashrate.php
index a08d6ab..478f7f5 100644
--- a/src/Methods/Eth/Hashrate.php
+++ b/src/Methods/Eth/Hashrate.php
@@ -13,6 +13,7 @@ namespace Web3\Methods\Eth;
 
 use InvalidArgumentException;
 use Web3\Methods\EthMethod;
+use Web3\Formatters\BigNumberFormatter;
 
 class Hashrate extends EthMethod
 {
@@ -35,7 +36,9 @@ class Hashrate extends EthMethod
      * 
      * @var array
      */
-    protected $outputFormatters = [];
+    protected $outputFormatters = [
+        BigNumberFormatter::class
+    ];
 
     /**
      * defaultValues
diff --git a/test/TestCase.php b/test/TestCase.php
index ed6e437..51593d8 100644
--- a/test/TestCase.php
+++ b/test/TestCase.php
@@ -21,6 +21,20 @@ class TestCase extends BaseTestCase
      */
     protected $testRinkebyHost = 'https://rinkeby.infura.io/vuethexplore';
 
+    /**
+     * testHost
+     * 
+     * @var string
+     */
+    protected $testHost = 'http://localhost:8545';
+
+    /**
+     * coinbase
+     * 
+     * @var string
+     */
+    protected $coinbase;
+
     /**
      * setUp
      * 
@@ -28,8 +42,15 @@ class TestCase extends BaseTestCase
      */
     public function setUp()
     {
-        $web3 = new Web3($this->testRinkebyHost);
+        $web3 = new Web3($this->testHost);
         $this->web3 = $web3;
+
+        $web3->eth->coinbase(function ($err, $coinbase) {
+            if ($err !== null) {
+                return $this->fail($err->getMessage());
+            }
+            $this->coinbase = $coinbase;
+        });
     }
 
     /**
diff --git a/test/unit/ContractTest.php b/test/unit/ContractTest.php
index 4f24078..b3f0d91 100644
--- a/test/unit/ContractTest.php
+++ b/test/unit/ContractTest.php
@@ -304,7 +304,6 @@ class ContractTest extends TestCase
     {
         parent::setUp();
 
-        // $this->contract = new Contract('http://localhost:8545', $this->testAbi);
         $this->contract = new Contract($this->web3->provider, $this->testAbi);
         $this->contract->eth->accounts(function ($err, $accounts) {
             if ($err === null) {
@@ -417,7 +416,7 @@ class ContractTest extends TestCase
             $transactionId = $result;
             $this->assertTrue((preg_match('/^0x[a-f0-9]{64}$/', $transactionId) === 1));
 
-            $contract->eth->getTransactionReceipt($transactionId, function ($err, $transaction) use ($fromAccount, $toAccount) {
+            $contract->eth->getTransactionReceipt($transactionId, function ($err, $transaction) use ($fromAccount, $toAccount, $contract) {
                 if ($err !== null) {
                     return $this->fail($err);
                 }
@@ -426,7 +425,7 @@ class ContractTest extends TestCase
                     echo "\nTransaction has mind:) block number: " . $transaction->blockNumber . "\n";
 
                     // validate topics
-                    $this->assertEquals(Ethabi::encodeEventSignature($this->contract->events['Transfer']), $topics[0]);
+                    $this->assertEquals($contract->ethabi->encodeEventSignature($this->contract->events['Transfer']), $topics[0]);
                     $this->assertEquals('0x' . IntegerFormatter::format($fromAccount), $topics[1]);
                     $this->assertEquals('0x' . IntegerFormatter::format($toAccount), $topics[2]);
                 }
diff --git a/test/unit/EthApiTest.php b/test/unit/EthApiTest.php
index 8c1ee63..0d4cc4b 100644
--- a/test/unit/EthApiTest.php
+++ b/test/unit/EthApiTest.php
@@ -73,10 +73,9 @@ class EthApiTest extends TestCase
 
         $eth->coinbase(function ($err, $coinbase) {
             if ($err !== null) {
-                // infura banned us to use coinbase
-                return $this->assertTrue($err->getCode() === 405);
+                return $this->fail($err->getMessage());
             }
-            $this->assertTrue(is_string($coinbass));
+            $this->assertEquals($coinbase, $this->coinbase);
         });
     }
 
@@ -93,7 +92,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
-            $this->assertTrue($mining !== null);
+            $this->assertTrue($mining);
         });
     }
 
@@ -110,7 +109,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
-            $this->assertTrue(is_string($hashrate));
+            $this->assertEquals($hashrate->toString(), '0');
         });
     }
 
@@ -127,7 +126,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
-            $this->assertTrue(is_string($gasPrice));
+            $this->assertTrue(is_numeric($gasPrice->toString()));
         });
     }
 
@@ -161,7 +160,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
-            $this->assertTrue(is_string($blockNumber));
+            $this->assertTrue(is_numeric($blockNumber->toString()));
         });
     }
 
@@ -178,7 +177,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
-            $this->assertTrue(is_string($balance));
+            $this->assertTrue(is_numeric($balance->toString()));
         });
     }
 
@@ -191,7 +190,7 @@ class EthApiTest extends TestCase
     {
         $eth = $this->eth;
 
-        $eth->getStorageAt('0x407d73d8a49eeb85d32cf465507dd71d507100c1', '0x0', function ($err, $storage) {
+        $eth->getStorageAt('0x561a2aa10f9a8589c93665554c871106342f70af', '0x0', function ($err, $storage) {
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
@@ -208,11 +207,11 @@ class EthApiTest extends TestCase
     {
         $eth = $this->eth;
 
-        $eth->getTransactionCount('0x407d73d8a49eeb85d32cf465507dd71d507100c1', function ($err, $transactionCount) {
+        $eth->getTransactionCount('0x561a2aa10f9a8589c93665554c871106342f70af', function ($err, $transactionCount) {
             if ($err !== null) {
                 return $this->fail($err->getMessage());
             }
-            $this->assertTrue(is_string($transactionCount));
+            $this->assertTrue(is_numeric($transactionCount->toString()));
         });
     }
 
@@ -229,7 +228,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($transactionCount));
+            $this->assertTrue(is_numeric($transactionCount->toString()));
         });
     }
 
@@ -246,7 +245,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($transactionCount));
+            $this->assertTrue(is_numeric($transactionCount->toString()));
         });
     }
 
@@ -263,7 +262,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($uncleCount));
+            $this->assertTrue(is_numeric($uncleCount->toString()));
         });
     }
 
@@ -280,7 +279,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($uncleCount));
+            $this->assertTrue(is_numeric($uncleCount->toString()));
         });
     }
 
@@ -405,7 +404,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($gas));
+            $this->assertTrue(is_numeric($gas->toString()));
         });
     }
 
@@ -422,7 +421,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($block));
+            $this->assertTrue($block !== null);
         });
     }
 
@@ -457,7 +456,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($transaction));
+            $this->assertTrue($transaction !== null);
         });
     }
 
@@ -474,7 +473,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($transaction));
+            $this->assertTrue($transaction !== null);
         });
     }
 
@@ -491,7 +490,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($transaction));
+            $this->assertTrue($transaction !== null);
         });
     }
 
@@ -508,7 +507,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($transaction));
+            $this->assertTrue($transaction !== null);
         });
     }
 
@@ -525,7 +524,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($uncle));
+            $this->assertTrue($uncle !== null);
         });
     }
 
@@ -542,7 +541,7 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($uncle));
+            $this->assertTrue($uncle !== null);
         });
     }
 
@@ -559,7 +558,8 @@ class EthApiTest extends TestCase
             if ($err !== null) {
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($compilers));
+            $this->assertTrue(is_array($compilers));
+            $this->assertEquals($compilers[0], 'solidity');
         });
     }
 
@@ -687,7 +687,7 @@ class EthApiTest extends TestCase
                 // infura banned us to uninstall filter
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($filter));
+            $this->assertTrue(is_bool($filter));
         });
     }
 
@@ -700,12 +700,12 @@ class EthApiTest extends TestCase
     {
         $eth = $this->eth;
 
-        $eth->getFilterChanges('0x01', function ($err, $filter) {
+        $eth->getFilterChanges('0x01', function ($err, $changes) {
             if ($err !== null) {
                 // infura banned us to get filter changes
                 return $this->assertTrue($err !== null);
             }
-            $this->assertTrue(is_string($filter));
+            $this->assertTrue(is_array($changes));
         });
     }
 
diff --git a/test/unit/PersonalApiTest.php b/test/unit/PersonalApiTest.php
index e9a449a..9924b0a 100644
--- a/test/unit/PersonalApiTest.php
+++ b/test/unit/PersonalApiTest.php
@@ -14,6 +14,13 @@ class PersonalApiTest extends TestCase
      */
     protected $personal;
 
+    /**
+     * newAccount
+     * 
+     * @var string
+     */
+    protected $newAccount;
+
     /**
      * setUp
      * 
@@ -55,8 +62,7 @@ class PersonalApiTest extends TestCase
 
         $personal->newAccount('123456', function ($err, $account) {
             if ($err !== null) {
-                // infura banned us to use new account
-                return $this->assertTrue($err->getCode() === 405);
+                return $this->fail($e->getMessage());
             }
             $this->assertTrue(is_string($account));
         });
@@ -71,12 +77,21 @@ class PersonalApiTest extends TestCase
     {
         $personal = $this->personal;
 
-        $personal->unlockAccount('0x407d73d8a49eeb85d32cf465507dd71d507100c1', '123456', function ($err, $account) {
+        // create account
+        $personal->newAccount('123456', function ($err, $account) {
+            if ($err !== null) {
+                return $this->fail($e->getMessage());
+            }
+            $this->newAccount = $account;
+            $this->assertTrue(is_string($account));
+        });
+
+        $personal->unlockAccount($this->newAccount, '123456', function ($err, $unlocked) {
             if ($err !== null) {
                 // infura banned us to use unlock account
                 return $this->assertTrue($err->getCode() === 405);
             }
-            $this->assertTrue(is_bool($account));
+            $this->assertTrue($unlocked);
         });
     }
 
@@ -89,19 +104,37 @@ class PersonalApiTest extends TestCase
     {
         $personal = $this->personal;
 
-        $personal->sendTransaction([
-            'from' => "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
-            'to' => "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
-            'gas' => "0x76c0",
-            'gasPrice' => "0x9184e72a000",
-            'value' => "0x9184e72a",
-            'data' => "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
-        ], '123456', function ($err, $transaction) {
+        // create account
+        $personal->newAccount('123456', function ($err, $account) {
             if ($err !== null) {
-                // infura banned us to use send transaction
-                return $this->assertTrue($err->getCode() === 405);
+                return $this->fail($e->getMessage());
+            }
+            $this->newAccount = $account;
+            $this->assertTrue(is_string($account));
+        });
+
+        $this->web3->eth->sendTransaction([
+            'from' => $this->coinbase,
+            'to' => $this->newAccount,
+            'value' => '0xfffffffff',
+        ], function ($err, $transaction) {
+            if ($err !== null) {
+                return $this->fail($err->getMessage());
             }
             $this->assertTrue(is_string($transaction));
+            $this->assertTrue(mb_strlen($transaction) === 66);
+        });
+
+        $personal->sendTransaction([
+            'from' => $this->newAccount,
+            'to' => $this->coinbase,
+            'value' => '0x01',
+        ], '123456', function ($err, $transaction) {
+            if ($err !== null) {
+                return $this->fail($err->getMessage());
+            }
+            $this->assertTrue(is_string($transaction));
+            $this->assertTrue(mb_strlen($transaction) === 66);
         });
     }