diff --git a/CHANGELOG.md b/CHANGELOG.md
index aeb99b19..52ce8c56 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+### 5.0.0 (21/10/2018)
+
+#### Implementações
+   * novos casos de testes foram implementados
+   
 ### 4.2.1 (16/08/2018)
 
 #### Correções
diff --git a/tests/Domains/DirectPreApproval/AddressTest.php b/tests/Domains/DirectPreApproval/AddressTest.php
index 4a4f69e8..3ba93f32 100644
--- a/tests/Domains/DirectPreApproval/AddressTest.php
+++ b/tests/Domains/DirectPreApproval/AddressTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new Address();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Address::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/BillingAddressTest.php b/tests/Domains/DirectPreApproval/BillingAddressTest.php
index 9161c10b..fdc85b46 100644
--- a/tests/Domains/DirectPreApproval/BillingAddressTest.php
+++ b/tests/Domains/DirectPreApproval/BillingAddressTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new BillingAddress();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(BillingAddress::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/CreditCardTest.php b/tests/Domains/DirectPreApproval/CreditCardTest.php
index cf3d69a0..972edfd7 100644
--- a/tests/Domains/DirectPreApproval/CreditCardTest.php
+++ b/tests/Domains/DirectPreApproval/CreditCardTest.php
@@ -14,8 +14,10 @@ protected function setUp()
         $this->obj = new CreditCard();
     }
 
-    /**
-     * @todo implement tests
-     */
+    public function testRequiredParameters()
+    {
+        $this->assertObjectHasAttribute('token', $this->obj);
+        $this->assertObjectHasAttribute('holder', $this->obj);
+    }
 
 }
diff --git a/tests/Domains/DirectPreApproval/DocumentTest.php b/tests/Domains/DirectPreApproval/DocumentTest.php
index 7a2469d0..0f5761f6 100644
--- a/tests/Domains/DirectPreApproval/DocumentTest.php
+++ b/tests/Domains/DirectPreApproval/DocumentTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new Document();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Document::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/ExpirationTest.php b/tests/Domains/DirectPreApproval/ExpirationTest.php
index 604b8b88..eada430c 100644
--- a/tests/Domains/DirectPreApproval/ExpirationTest.php
+++ b/tests/Domains/DirectPreApproval/ExpirationTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new Expiration();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Expiration::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/HolderTest.php b/tests/Domains/DirectPreApproval/HolderTest.php
index a965b538..d4aced35 100644
--- a/tests/Domains/DirectPreApproval/HolderTest.php
+++ b/tests/Domains/DirectPreApproval/HolderTest.php
@@ -14,7 +14,16 @@ protected function setUp()
         $this->obj = new Holder();
     }
 
-    /**
-     * @todo implement tests
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Holder::class, $this->obj);
+    }
+
+    public function testRequiredParameters()
+    {
+        $this->assertObjectHasAttribute('name', $this->obj);
+        $this->assertObjectHasAttribute('birthDate', $this->obj);
+        $this->assertObjectHasAttribute('documents', $this->obj);
+        $this->assertObjectHasAttribute('phone', $this->obj);
+    }
 }
diff --git a/tests/Domains/DirectPreApproval/ItemTest.php b/tests/Domains/DirectPreApproval/ItemTest.php
index d7538257..667917b5 100644
--- a/tests/Domains/DirectPreApproval/ItemTest.php
+++ b/tests/Domains/DirectPreApproval/ItemTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new Item();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Item::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/PaymentMethodTest.php b/tests/Domains/DirectPreApproval/PaymentMethodTest.php
index 5c6b6d3c..8ba48e06 100644
--- a/tests/Domains/DirectPreApproval/PaymentMethodTest.php
+++ b/tests/Domains/DirectPreApproval/PaymentMethodTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new PaymentMethod();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(PaymentMethod::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/PhoneTest.php b/tests/Domains/DirectPreApproval/PhoneTest.php
index 66053227..9f709cd5 100644
--- a/tests/Domains/DirectPreApproval/PhoneTest.php
+++ b/tests/Domains/DirectPreApproval/PhoneTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new Phone();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Phone::class, $this->obj);
+    }
 
     public function testParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/PlanTest.php b/tests/Domains/DirectPreApproval/PlanTest.php
index d22abd8a..1228a766 100644
--- a/tests/Domains/DirectPreApproval/PlanTest.php
+++ b/tests/Domains/DirectPreApproval/PlanTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new Plan();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Plan::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/PreApprovalTest.php b/tests/Domains/DirectPreApproval/PreApprovalTest.php
index 1f1c1967..efeabd25 100644
--- a/tests/Domains/DirectPreApproval/PreApprovalTest.php
+++ b/tests/Domains/DirectPreApproval/PreApprovalTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new PreApproval();
     }
 
-    /**
-     * @todo implement assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(PreApproval::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/ReceiverTest.php b/tests/Domains/DirectPreApproval/ReceiverTest.php
index 27451b3b..ce604c50 100644
--- a/tests/Domains/DirectPreApproval/ReceiverTest.php
+++ b/tests/Domains/DirectPreApproval/ReceiverTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new Receiver();
     }
 
-    /**
-     * @todo implements test assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Receiver::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {
diff --git a/tests/Domains/DirectPreApproval/SenderTest.php b/tests/Domains/DirectPreApproval/SenderTest.php
index 49b0ee78..16034360 100644
--- a/tests/Domains/DirectPreApproval/SenderTest.php
+++ b/tests/Domains/DirectPreApproval/SenderTest.php
@@ -14,9 +14,10 @@ protected function setUp()
         $this->obj = new Sender();
     }
 
-    /**
-     * @todo implements test assertInstanceOf
-     */
+    public function testConstructor()
+    {
+        $this->assertInstanceOf(Sender::class, $this->obj);
+    }
 
     public function testRequiredParameters()
     {