ACP2E-3324: fix static and unit test errors

Author: alzota

app/code/Magento/Theme/Test/Unit/Model/Data/Design/ConfigFactoryTest.php

@@ -275,7 +275,8 @@ public function testCreateInSingleStoreMode()
         $this->assertSame($this->designConfig, $this->factory->create($scope, $scopeId, $data));
     }
 
-    public function testBypassSettingLockedConfig() {
+    public function testBypassSettingLockedConfig()
+    {
         $scope = 'default';
         $scopeId = 0;
         $data = [

app/code/Magento/Theme/Test/Unit/Plugin/DesignPathValidatorPluginTest.php

@@ -70,7 +70,10 @@ public function testAroundValidateWithValidPath()
             ->willReturn([$path => $path]);
 
         $designConfig = $this->createMock(DesignConfigInterface::class);
-        $extensionAttributes = $this->createMock(DesignConfigExtensionInterface::class);
+        $extensionAttributes = $this->getMockBuilder(DesignConfigExtensionInterface::class)
+            ->disableOriginalConstructor()
+            ->onlyMethods(['getDesignConfigData', 'setDesignConfigData'])
+            ->getMock();
         $designConfig->expects($this->once())
             ->method('getExtensionAttributes')
             ->willReturn($extensionAttributes);