diff --git a/Test/Unit/Gateway/Transaction/GooglePay/Config/ConfigTest.php b/Test/Unit/Gateway/Transaction/GooglePay/Config/ConfigTest.php
new file mode 100644
index 00000000..e0d087c4
--- /dev/null
+++ b/Test/Unit/Gateway/Transaction/GooglePay/Config/ConfigTest.php
@@ -0,0 +1,37 @@
+<?php
+namespace Pagarme\Pagarme\Test\Unit\Gateway\Transaction\GooglePay\Config;
+
+use Pagarme\Pagarme\Test\Unit\BaseTest;
+use Pagarme\Pagarme\Gateway\Transaction\GooglePay\Config\Config;
+
+class ConfigTest extends BaseTest
+{
+    public function testGetCardBrandsIfOnlyOneBrandActive()
+    {
+        $config = \Mockery::mock(Config::class)->makePartial(['getConfig']);
+        $config->shouldAllowMockingProtectedMethods();
+        $config->shouldReceive('getConfig')->andReturn('visa');
+        $allowedBrands = $config->getCardBrands();
+        $this->assertIsArray($allowedBrands);
+        $this->assertEquals(['VISA'], $allowedBrands);
+    }
+    public function testGetCardBrandsIfTwoBrandsActives()
+    {
+        $config = \Mockery::mock(Config::class)->makePartial(['getConfig']);
+        $config->shouldAllowMockingProtectedMethods();
+        $config->shouldReceive('getConfig')->andReturn('visa,mastercard');
+        $allowedBrands = $config->getCardBrands();
+        $this->assertIsArray($allowedBrands);
+        $this->assertEquals(['VISA', 'MASTERCARD'], $allowedBrands);
+    }
+
+    public function testGetCardBrandsWithBrandNotAllowedForGooglePay()
+    {
+        $config = \Mockery::mock(Config::class)->makePartial(['getConfig']);
+        $config->shouldAllowMockingProtectedMethods();
+        $config->shouldReceive('getConfig')->andReturn('visa,jcb');
+        $allowedBrands = $config->getCardBrands();
+        $this->assertIsArray($allowedBrands);
+        $this->assertEquals(['VISA'], $allowedBrands);
+    }
+}