diff --git a/tests/EncryptionTest.php b/tests/EncryptionTest.php
index 9c59e47..b4668a0 100644
--- a/tests/EncryptionTest.php
+++ b/tests/EncryptionTest.php
@@ -7,7 +7,7 @@
 
 class EncryptionTest extends TestCase
 {
-    public function test_encrypt_by_phpseclib_array()
+    public function testEncryptByPhpseclib()
     {
         //經銷商商店金鑰【從用戶端發動時，以驗證碼代替金鑰】
         $key = 'Xd668CSjnXQLD26Hia8vapkOgGXAv68s';
@@ -32,7 +32,7 @@ public function test_encrypt_by_phpseclib_array()
         self::assertEquals($payment, decrypt($encrypt, $key));
     }
 
-    public function test_decrypt_by_phpseclib_array()
+    public function testDecryptByPhpseclib()
     {
         //經銷商商店金鑰【從用戶端發動時，以驗證碼代替金鑰】
         $key = 'Xd668CSjnXQLD26Hia8vapkOgGXAv68s';
diff --git a/tests/GatewayTest.php b/tests/GatewayTest.php
index 0d748bd..a748bec 100644
--- a/tests/GatewayTest.php
+++ b/tests/GatewayTest.php
@@ -40,7 +40,7 @@ public function setUp()
         ]);
     }
 
-    public function test_purchase()
+    public function testPurchase()
     {
         $this->setMockHttpResponse('PurchaseSuccess.txt');
 
@@ -82,7 +82,7 @@ public function test_purchase()
         ], $options);
     }
 
-    public function test_complete_purchase()
+    public function testCompletePurchase()
     {
         $options = [
             'key' => 'dee886ee19ddbb97e2968a1a8777fc7d',
@@ -124,7 +124,7 @@ public function test_complete_purchase()
         self::assertEquals('86579', $response->getTransactionReference());
     }
 
-    public function test_accept_notification()
+    public function testAcceptNotification()
     {
         $options = [
             'key' => 'dee886ee19ddbb97e2968a1a8777fc7d',
@@ -162,7 +162,7 @@ public function test_accept_notification()
         self::assertEquals('8888', $response->getMessage());
     }
 
-    public function test_fetch_transaction()
+    public function testFetchTransaction()
     {
         $this->setMockHttpResponse('FetchTransactionSuccess.txt');
 
@@ -179,7 +179,7 @@ public function test_fetch_transaction()
         self::assertEquals('86579', $response->getTransactionReference());
     }
 
-    public function test_refund()
+    public function testRefund()
     {
         $this->setMockHttpResponse('RefundSuccess.txt');
 
diff --git a/tests/Message/CompletePurchaseRequestTest.php b/tests/Message/CompletePurchaseRequestTest.php
index 6f791f0..04b2745 100644
--- a/tests/Message/CompletePurchaseRequestTest.php
+++ b/tests/Message/CompletePurchaseRequestTest.php
@@ -57,7 +57,7 @@ public function setUp()
         ]);
     }
 
-    public function test_get_data()
+    public function testGetData()
     {
         self::assertEquals([
             'key' => 'dee886ee19ddbb97e2968a1a8777fc7d',
diff --git a/tests/Message/CompletePurchaseResponseTest.php b/tests/Message/CompletePurchaseResponseTest.php
index 34ffe9b..6ae28fc 100644
--- a/tests/Message/CompletePurchaseResponseTest.php
+++ b/tests/Message/CompletePurchaseResponseTest.php
@@ -7,7 +7,7 @@
 
 class CompletePurchaseResponseTest extends TestCase
 {
-    public function test_complete_purchase_success()
+    public function testCompletePurchaseSuccess()
     {
         $data = [
             'key' => 'dee886ee19ddbb97e2968a1a8777fc7d',
diff --git a/tests/Message/FetchTransactionRequestTest.php b/tests/Message/FetchTransactionRequestTest.php
index 1b00ce1..94465b2 100644
--- a/tests/Message/FetchTransactionRequestTest.php
+++ b/tests/Message/FetchTransactionRequestTest.php
@@ -23,7 +23,7 @@ public function setUp()
         ]);
     }
 
-    public function test_get_data()
+    public function testGetData()
     {
         self::assertEquals([
             'uid' => '86579',
diff --git a/tests/Message/PurchaseRequestTest.php b/tests/Message/PurchaseRequestTest.php
index 43b1bbb..f81eac1 100644
--- a/tests/Message/PurchaseRequestTest.php
+++ b/tests/Message/PurchaseRequestTest.php
@@ -48,7 +48,7 @@ public function setUp()
         ]);
     }
 
-    public function test_get_data()
+    public function testGetData()
     {
         self::assertEquals([
             'store_uid' => '398800730001',
diff --git a/tests/Message/PurchaseResponseTest.php b/tests/Message/PurchaseResponseTest.php
index c58b1a6..5d59d06 100644
--- a/tests/Message/PurchaseResponseTest.php
+++ b/tests/Message/PurchaseResponseTest.php
@@ -7,7 +7,7 @@
 
 class PurchaseResponseTest extends TestCase
 {
-    public function test_purchase_success()
+    public function testPurchaseSuccess()
     {
         $httpResponse = $this->getMockHttpResponse('PurchaseSuccess.txt');
         $data = json_decode($httpResponse->getBody(), true);