public function testGetTheme()
 {
     $themeKey = 'theme';
     $themePath = 'path';
     $this->registrar->expects($this->once())->method('getPath')->with(ComponentRegistrar::THEME, $themeKey)->willReturn($themePath);
     $themePackage = $this->getMock('\\Magento\\Framework\\View\\Design\\Theme\\ThemePackage', [], [], '', false);
     $this->factory->expects($this->once())->method('create')->with($themeKey, $themePath)->willReturn($themePackage);
     $this->assertSame($themePackage, $this->object->getTheme($themeKey));
 }