MAGETWO-90349: Template file 'header.html' is not found.

Author: ameysar

app/code/Magento/Email/Test/Unit/Model/AbstractTemplateTest.php

@@ -117,10 +117,11 @@ protected function setUp()
     /**
      * Return the model under test with additional methods mocked.
      *
-     * @param $mockedMethods array
+     * @param array $mockedMethods
+     * @param array $data
      * @return \Magento\Email\Model\Template|\PHPUnit_Framework_MockObject_MockObject
      */
-    protected function getModelMock(array $mockedMethods = [])
+    protected function getModelMock(array $mockedMethods = [], array $data = [])
     {
         $helper = new \Magento\Framework\TestFramework\Unit\Helper\ObjectManager($this);
         return $this->getMockForAbstractClass(
@@ -136,7 +137,8 @@ protected function getModelMock(array $mockedMethods = [])
                     'scopeConfig' => $this->scopeConfig,
                     'emailConfig' => $this->emailConfig,
                     'filterFactory' => $this->filterFactory,
-                    'templateFactory' => $this->templateFactory
+                    'templateFactory' => $this->templateFactory,
+                    'data' => $data,
                 ]
             ),
             '',
@@ -431,4 +433,17 @@ public function testGetDesignConfig()
         $expectedConfig = ['area' => 'test_area', 'store' => 2];
         $this->assertEquals($expectedConfig, $model->getDesignConfig()->getData());
     }
+
+    /**
+     * @return void
+     */
+    public function testSetForcedAreaWhenAreIsSet(): void
+    {
+        $templateId = 'test_template';
+        $model = $this->getModelMock([], ['area' => 'frontend']);
+
+        $this->emailConfig->expects($this->never())->method('getTemplateArea');
+
+        $model->setForcedArea($templateId);
+    }
 }