Fix child theme base path property (#27)

* fix: Use get_stylesheet_directory instead of get_template_directory
* chore: Update ThemeProperties test

Author: o-samaras

src/Properties/ThemeProperties.php

@@ -72,7 +72,7 @@ protected function __construct(string $themeDirectory)
         }
 
         $baseName = $theme->get_stylesheet();
-        $basePath = $theme->get_template_directory();
+        $basePath = $theme->get_stylesheet_directory();
         $baseUrl = (string) trailingslashit($theme->get_stylesheet_directory_uri());
 
         parent::__construct(

tests/unit/Properties/ThemePropertiesTest.php

@@ -56,7 +56,7 @@ public function testBasic(): void
             $themeStub->expects('get')->with($key)->andReturn($return);
         }
         $themeStub->expects('get_stylesheet')->andReturn($expectedBaseName);
-        $themeStub->expects('get_template_directory')->andReturn($expectedBasePath);
+        $themeStub->expects('get_stylesheet_directory')->andReturn($expectedBasePath);
         $themeStub->expects('get_stylesheet_directory_uri')->andReturn($expectedBaseUrl);
 
         Functions\expect('wp_get_theme')->with($expectedBasePath)->andReturn($themeStub);
@@ -109,7 +109,7 @@ public function testChildTheme(): void
         $themeStub->shouldReceive('get')->zeroOrMoreTimes()->andReturnArg(0);
 
         $themeStub->expects('get_stylesheet')->andReturn($expectedBaseName);
-        $themeStub->expects('get_template_directory')->andReturn($expectedBasePath);
+        $themeStub->expects('get_stylesheet_directory')->andReturn($expectedBasePath);
         $themeStub->expects('get_stylesheet_directory_uri')->andReturn($expectedBaseUrl);
 
         Functions\expect('wp_get_theme')->with($expectedBasePath)->andReturn($themeStub);