diff --git a/src/Cacheresource/Base.php b/src/Cacheresource/Base.php
index 8ec8f232..54a14192 100644
--- a/src/Cacheresource/Base.php
+++ b/src/Cacheresource/Base.php
@@ -67,25 +67,6 @@ abstract class Base
      */
     abstract public function retrieveCachedContent(Template $_template);
 
-	/**
-	 * Return cached content
-	 *
-	 * @param Template $_template template object
-	 *
-	 * @return null|string
-	 * @throws Exception
-	 */
-    public function getCachedContent(Template $_template)
-    {
-        if ($this->process($_template)) {
-            ob_start();
-            $unifunc = $_template->getCached()->unifunc;
-            $unifunc($_template);
-            return ob_get_clean();
-        }
-        return null;
-    }
-
     /**
      * Empty cache
      *
diff --git a/src/Compile/Tag/IncludeTag.php b/src/Compile/Tag/IncludeTag.php
index c2da994b..478d4abd 100644
--- a/src/Compile/Tag/IncludeTag.php
+++ b/src/Compile/Tag/IncludeTag.php
@@ -186,69 +186,4 @@ class IncludeTag extends Base {
 		return $_output;
 	}
 
-	/**
-	 * Compile inline sub template
-	 *
-	 * @param \Smarty\Compiler\Template $compiler
-	 * @param \Smarty\Template $tpl
-	 * @param string $t_hash
-	 *
-	 * @return bool
-	 * @throws \Exception
-	 * @throws \Smarty\Exception
-	 */
-	private function compileInlineTemplate(
-		Template $compiler,
-		\Smarty\Template $tpl,
-		         $t_hash
-	) {
-		$tplSource = $tpl->getSource();
-		$uid = $tplSource->type . $tplSource->uid;
-		if ($tplSource->exists) {
-			$compiler->getParentCompiler()->mergedSubTemplatesData[$uid][$t_hash]['uid'] = $tplSource->uid;
-			$tpl->getCompiled(true)->nocache_hash = $compiler->getParentCompiler()->getTemplate()->getCompiled()->nocache_hash;
-			// save unique function name
-			$compiler->getParentCompiler()->mergedSubTemplatesData[$uid][$t_hash]['func'] =
-			$tpl->getCompiled()->unifunc = 'content_' . str_replace(['.', ','], '_', uniqid('', true));
-			// make sure whole chain gets compiled
-			$tpl->mustCompile = true;
-			$compiler->getParentCompiler()->mergedSubTemplatesData[$uid][$t_hash]['nocache_hash'] =
-				$tpl->getCompiled()->nocache_hash;
-			if ($tplSource->type === 'file') {
-				$sourceInfo = $tplSource->filepath;
-			} else {
-				$basename = $tplSource->getBasename();
-				$sourceInfo = $tplSource->type . ':' .
-					($basename ? $basename : $tplSource->name);
-			}
-			// get compiled code
-			$compiled_code = "<?php\n\n";
-			$compiled_code .= $compiler->cStyleComment(" Start inline template \"{$sourceInfo}\" =============================") . "\n";
-			$compiled_code .= "function {$tpl->getCompiled()->unifunc} (\\Smarty\\Template \$_smarty_tpl) {\n";
-			$compiled_code .= "?>\n" . $tpl->getCompiler()->compileTemplateSource($tpl, $compiler->getParentCompiler());
-			$compiled_code .= "<?php\n";
-			$compiled_code .= "}\n?>\n";
-			$compiled_code .= $tpl->getSmarty()->runPostFilters($tpl->getCompiler()->blockOrFunctionCode, $tpl);
-			$compiled_code .= "<?php\n\n";
-			$compiled_code .= $compiler->cStyleComment(" End inline template \"{$sourceInfo}\" =============================") . "\n";
-			$compiled_code .= '?>';
-
-//			unset($tpl->compiler); // @TODO removed this.
-
-			if ($tpl->getCompiled()->getNocacheCode()) {
-				// replace nocache_hash
-				$compiled_code =
-					str_replace(
-						"{$tpl->getCompiled()->nocache_hash}",
-						$compiler->getTemplate()->getCompiled()->nocache_hash,
-						$compiled_code
-					);
-				$compiler->getTemplate()->getCompiled()->setNocacheCode(true);
-			}
-			$compiler->getParentCompiler()->mergedSubTemplatesCode[$tpl->getCompiled()->unifunc] = $compiled_code;
-			return true;
-		} else {
-			return false;
-		}
-	}
 }
diff --git a/src/Compiler/CodeFrame.php b/src/Compiler/CodeFrame.php
index 3eee90a7..7a815081 100644
--- a/src/Compiler/CodeFrame.php
+++ b/src/Compiler/CodeFrame.php
@@ -62,7 +62,8 @@ class CodeFrame
 	        str_replace('*/', '* /', $this->_template->getSource()->filepath)
         );
         $output .= "/* @var \\Smarty\\Template \$_smarty_tpl */\n";
-        $dec = "\$_smarty_tpl->isFresh(" . var_export($properties, true) . ',' . ($cache ? 'true' : 'false') . ')';
+        $dec = "\$_smarty_tpl->" . ($cache ? "getCached()" : "getCompiled()");
+		$dec .= "->isFresh(\$_smarty_tpl, " . var_export($properties, true) . ')';
         $output .= "if ({$dec}) {\n";
         $output .= "function {$properties['unifunc']} (\\Smarty\\Template \$_smarty_tpl) {\n";
         if (!$cache && !empty($compiler->tpl_function)) {
diff --git a/src/Compiler/Template.php b/src/Compiler/Template.php
index 4318c7fa..9bf22fc8 100644
--- a/src/Compiler/Template.php
+++ b/src/Compiler/Template.php
@@ -352,7 +352,7 @@ class Template extends BaseCompiler {
 	 *
 	 * @param \Smarty\Template $template template object to compile
 	 *
-	 * @return bool true if compiling succeeded, false if it failed
+	 * @return string code
 	 * @throws Exception
 	 */
 	public function compileTemplate(\Smarty\Template $template) {
diff --git a/src/Debug.php b/src/Debug.php
index 6a83b8f8..4591ac46 100644
--- a/src/Debug.php
+++ b/src/Debug.php
@@ -203,7 +203,6 @@ class Debug extends Data
         $debObj = new \Smarty\Smarty();
         // copy the working dirs from application
         $debObj->setCompileDir($smarty->getCompileDir());
-        $debObj->force_compile = false;
         $debObj->compile_check = \Smarty::COMPILECHECK_ON;
         $debObj->security_policy = null;
         $debObj->debugging = false;
diff --git a/src/Resource/RecompiledPlugin.php b/src/Resource/RecompiledPlugin.php
index f87664b3..f1c64bc7 100644
--- a/src/Resource/RecompiledPlugin.php
+++ b/src/Resource/RecompiledPlugin.php
@@ -36,35 +36,6 @@ abstract class RecompiledPlugin extends BasePlugin {
 		return false;
 	}
 
-	/**
-	 * compile template from source
-	 *
-	 * @param Template $_smarty_tpl do not change variable name, is used by compiled template
-	 *
-	 * @throws Exception
-	 */
-	public function recompile(Template $_smarty_tpl) {
-		$compiled = $_smarty_tpl->getCompiled();
-		$compiled->file_dependency = [];
-		$compiled->includes = [];
-		$compiled->nocache_hash = null;
-		$compiled->unifunc = null;
-		$level = ob_get_level();
-		ob_start();
-		// call compiler
-		try {
-			eval('?>' . $_smarty_tpl->getCompiler()->compileTemplate($_smarty_tpl));
-		} catch (\Exception $e) {
-			while (ob_get_level() > $level) {
-				ob_end_clean();
-			}
-			throw $e;
-		}
-		ob_get_clean();
-		$compiled->timestamp = time();
-		$compiled->exists = true;
-	}
-
 	/*
 	   * Disable timestamp checks for recompiled resource.
 	   *
diff --git a/src/Template.php b/src/Template.php
index 991c7c92..43006db5 100644
--- a/src/Template.php
+++ b/src/Template.php
@@ -56,13 +56,6 @@ class Template extends TemplateBase {
 	 */
 	public $template_resource = null;
 
-	/**
-	 * flag if compiled template is invalid and must be (re)compiled
-	 *
-	 * @var bool
-	 */
-	public $mustCompile = null;
-
 	/**
 	 * Template ID
 	 *
@@ -309,88 +302,16 @@ class Template extends TemplateBase {
 		return parent::assign($tpl_var, $value, $nocache, $scope);
 	}
 
-	/**
-	 * This function is executed automatically when a compiled or cached template file is included
-	 * - Decode saved properties from compiled template and cache files
-	 * - Check if compiled or cache file is valid
-	 *
-	 * @param array $properties special template properties
-	 * @param bool $cache flag if called from cache file
-	 *
-	 * @return bool flag if compiled or cache file is valid
-	 * @throws \Smarty\Exception
-	 */
-	public function isFresh($properties, $cache = false) {
-		// on cache resources other than file check version stored in cache code
-		if (!isset($properties['version']) || \Smarty\Smarty::SMARTY_VERSION !== $properties['version']) {
-			if ($cache) {
-				$this->getSmarty()->clearAllCache();
-			} else {
-				$this->getSmarty()->clearCompiledTemplate();
-			}
-			return false;
-		}
-		$is_valid = true;
-		if (!empty($properties['file_dependency'])
-			&& ((!$cache && $this->compile_check) || $this->compile_check === \Smarty\Smarty::COMPILECHECK_ON)
-		) {
-			// check file dependencies at compiled code
-			foreach ($properties['file_dependency'] as $_file_to_check) {
-				if ($_file_to_check[2] === 'file' || $_file_to_check[2] === 'php') {
-					if ($this->getSource()->filepath === $_file_to_check[0]) {
-						// do not recheck current template
-						continue;
-						//$mtime = $this->getSource()->getTimeStamp();
-					} else {
-						// file and php types can be checked without loading the respective resource handlers
-						$mtime = is_file($_file_to_check[0]) ? filemtime($_file_to_check[0]) : false;
-					}
-				} else {
-					$handler = \Smarty\Resource\BasePlugin::load($this->getSmarty(), $_file_to_check[2]);
-					if ($handler->checkTimestamps()) {
-						$source = Source::load($this, $this->getSmarty(), $_file_to_check[0]);
-						$mtime = $source->getTimeStamp();
-					} else {
-						continue;
-					}
-				}
-				if ($mtime === false || $mtime > $_file_to_check[1]) {
-					$is_valid = false;
-					break;
-				}
-			}
-		}
-		if ($cache) {
-			// CACHING_LIFETIME_SAVED cache expiry has to be validated here since otherwise we'd define the unifunc
-			if ($this->caching === \Smarty\Smarty::CACHING_LIFETIME_SAVED && $properties['cache_lifetime'] >= 0
-				&& (time() > ($this->getCached()->timestamp + $properties['cache_lifetime']))
-			) {
-				$is_valid = false;
-			}
-			$this->getCached()->cache_lifetime = $properties['cache_lifetime'];
-			$this->getCached()->setValid($is_valid);
-			$generatedFile = $this->getCached();
-		} else {
-			$this->mustCompile = !$is_valid;
-			$generatedFile = $this->getCompiled();
-			$generatedFile->includes = $properties['includes'] ?? [];
-		}
-		if ($is_valid) {
-			$generatedFile->unifunc = $properties['unifunc'];
-			$generatedFile->setNocacheCode($properties['has_nocache_code']);
-			$generatedFile->file_dependency = $properties['file_dependency'];
-		}
-		return $is_valid && !function_exists($properties['unifunc']);
-	}
-
 	/**
 	 * Compiles the template
 	 * If the template is not evaluated the compiled template is saved on disk
 	 *
+	 * @TODO only used in compileAll and 1 unit test: can we move this and make compileAndWrite private?
+	 *
 	 * @throws \Exception
 	 */
 	public function compileTemplateSource() {
-		return $this->getCompiled()->compileTemplateSource($this);
+		return $this->getCompiled()->compileAndWrite($this);
 	}
 
 	/**
@@ -400,7 +321,7 @@ class Template extends TemplateBase {
 	 * @throws Exception
 	 */
 	public function getCachedContent() {
-		return $this->getCached()->handler->getCachedContent($this);
+		return $this->getCached()->getContent($this);
 	}
 
 	/**
@@ -547,7 +468,7 @@ class Template extends TemplateBase {
 	 * @return bool
 	 * @throws \Smarty\Exception
 	 */
-	public function mustCompile() {
+	public function mustCompile(): bool {
 		if (!$this->getSource()->exists) {
 			if ($this->_isSubTpl()) {
 				$parent_resource = " in '{$this->parent->template_resource}'";
@@ -556,13 +477,12 @@ class Template extends TemplateBase {
 			}
 			throw new Exception("Unable to load template {$this->getSource()->type} '{$this->getSource()->name}'{$parent_resource}");
 		}
-		if ($this->mustCompile === null) {
-			$this->mustCompile = $this->smarty->force_compile
-				|| $this->getSource()->handler->recompiled
-				|| !$this->getCompiled()->exists
-				|| ($this->compile_check &&	$this->getCompiled()->getTimeStamp() < $this->getSource()->getTimeStamp());
-		}
-		return $this->mustCompile;
+
+		// @TODO move this logic to Compiled
+		return $this->smarty->force_compile
+			|| $this->getSource()->handler->recompiled
+			|| !$this->getCompiled()->exists
+			|| ($this->compile_check &&	$this->getCompiled()->getTimeStamp() < $this->getSource()->getTimeStamp());
 	}
 
 	private function getCodeFrameCompiler(): Compiler\CodeFrame {
diff --git a/src/Template/Cached.php b/src/Template/Cached.php
index 89df7b0f..888858a2 100644
--- a/src/Template/Cached.php
+++ b/src/Template/Cached.php
@@ -216,11 +216,7 @@ class Cached extends GeneratedPhpFile {
 		if ($this->handler->process($_template, $this, $update) === false) {
 			$this->valid = false;
 		}
-		if ($this->valid) {
-			$this->processed = true;
-		} else {
-			$this->processed = false;
-		}
+		$this->processed = $this->valid;
 	}
 
 	/**
@@ -287,10 +283,8 @@ class Cached extends GeneratedPhpFile {
 
 		$this->removeNoCacheHash($_template, $no_output_filter);
 
-		$compile_check = (int)$_template->compile_check;
-		$_template->compile_check = \Smarty\Smarty::COMPILECHECK_OFF;
-
 		if ($_template->_isSubTpl()) {
+			// @TODO why is this needed?
 			$_template->getCompiled()->unifunc = $_template->parent->getCompiled()->unifunc;
 		}
 
@@ -298,8 +292,6 @@ class Cached extends GeneratedPhpFile {
 			$this->process($_template, true);
 		}
 
-		$_template->compile_check = $compile_check;
-
 		if ($_template->getSmarty()->debugging) {
 			$_template->getSmarty()->getDebug()->end_cache($_template);
 		}
@@ -386,4 +378,60 @@ class Cached extends GeneratedPhpFile {
 		$this->source = $source;
 	}
 
+	/**
+	 * Returns the generated content
+	 *
+	 * @param Template $template
+	 *
+	 * @return string|null
+	 * @throws \Exception
+	 */
+	public function getContent(Template $template) {
+		ob_start();
+		$this->render($template);
+		return ob_get_clean();
+	}
+
+	/**
+	 * This function is executed automatically when a generated file is included
+	 * - Decode saved properties
+	 * - Check if file is valid
+	 *
+	 * @param Template $_template
+	 * @param array $properties special template properties
+	 *
+	 * @return bool flag if compiled or cache file is valid
+	 * @throws Exception
+	 */
+	public function isFresh(Template $_template, array $properties): bool {
+
+		// on cache resources other than file check version stored in cache code
+		if (\Smarty\Smarty::SMARTY_VERSION !== $properties['version']) {
+			return false;
+		}
+
+		$is_valid = true;
+
+		if (!empty($properties['file_dependency']) && ($_template->compile_check === \Smarty\Smarty::COMPILECHECK_ON)) {
+			$is_valid = $this->checkFileDependencies($properties['file_dependency'], $_template);
+		}
+
+		// CACHING_LIFETIME_SAVED cache expiry has to be validated here since otherwise we'd define the unifunc
+		if ($_template->caching === \Smarty\Smarty::CACHING_LIFETIME_SAVED && $properties['cache_lifetime'] >= 0
+			&& (time() > ($this->timestamp + $properties['cache_lifetime']))
+		) {
+			$is_valid = false;
+		}
+
+		$this->cache_lifetime = $properties['cache_lifetime'];
+		$this->setValid($is_valid);
+
+		if ($is_valid) {
+			$this->unifunc = $properties['unifunc'];
+			$this->setNocacheCode($properties['has_nocache_code']);
+			$this->file_dependency = $properties['file_dependency'];
+		}
+		return $is_valid && !function_exists($properties['unifunc']);
+	}
+
 }
diff --git a/src/Template/Compiled.php b/src/Template/Compiled.php
index 660b672f..753bae76 100644
--- a/src/Template/Compiled.php
+++ b/src/Template/Compiled.php
@@ -2,6 +2,7 @@
 
 namespace Smarty\Template;
 
+use Smarty\Exception;
 use Smarty\Template;
 
 /**
@@ -25,6 +26,10 @@ class Compiled extends GeneratedPhpFile {
 	 * @var int[]
 	 */
 	public $includes = [];
+	/**
+	 * @var bool
+	 */
+	private $isValid = false;
 
 	/**
 	 * get a Compiled Object of this source
@@ -103,14 +108,17 @@ class Compiled extends GeneratedPhpFile {
 			$this->compileAndLoad($_template);
 		}
 
+		// @TODO Can't Cached handle this? Maybe introduce an event to decouple.
 		$_template->getCached()->file_dependency =
 			array_merge($_template->getCached()->file_dependency, $this->file_dependency);
 
 		$this->getRenderedTemplateCode($_template, $this->unifunc);
 
+		// @TODO Can't Cached handle this? Maybe introduce an event to decouple and remove the $_template->caching property.
 		if ($_template->caching && $this->getNocacheCode()) {
 			$_template->getCached()->hashes[$this->nocache_hash] = true;
 		}
+
 		if ($_template->getSmarty()->debugging) {
 			$_template->getSmarty()->getDebug()->end_render($_template);
 		}
@@ -124,26 +132,48 @@ class Compiled extends GeneratedPhpFile {
 	 * @throws Exception
 	 */
 	private function compileAndLoad(Template $_smarty_tpl) {
-		$source = $_smarty_tpl->getSource();
-		$smarty = $_smarty_tpl->getSmarty();
-		if ($source->handler->recompiled) {
-			$source->handler->recompile($_smarty_tpl); // @TODO who is compiling here?
-		} else {
-			if (!$this->exists || $smarty->force_compile
-				|| ($_smarty_tpl->compile_check && $source->getTimeStamp() > $this->getTimeStamp())
-			) {
-				$this->compileTemplateSource($_smarty_tpl);
-				$this->loadCompiledTemplate($_smarty_tpl);
-			} else {
-				$_smarty_tpl->mustCompile = true;
-				@include $this->filepath;
-				if ($_smarty_tpl->mustCompile) {
-					$this->compileTemplateSource($_smarty_tpl);
-					$this->loadCompiledTemplate($_smarty_tpl);
-				}
-			}
-			$this->processed = true;
+
+		if ($_smarty_tpl->getSource()->handler->recompiled) {
+			$this->recompile($_smarty_tpl);
+			return;
 		}
+
+		if ($this->exists && !$_smarty_tpl->getSmarty()->force_compile
+			&& !($_smarty_tpl->compile_check && $_smarty_tpl->getSource()->getTimeStamp() > $this->getTimeStamp())
+		) {
+			$this->loadCompiledTemplate($_smarty_tpl);
+		}
+
+		if (!$this->isValid) {
+			$this->compileAndWrite($_smarty_tpl);
+			$this->loadCompiledTemplate($_smarty_tpl);
+		}
+
+		$this->processed = true;
+	}
+
+	/**
+	 * compile template from source
+	 *
+	 * @param Template $_smarty_tpl do not change variable name, is used by compiled template
+	 *
+	 * @throws Exception
+	 */
+	private function recompile(Template $_smarty_tpl) {
+		$level = ob_get_level();
+		ob_start();
+		// call compiler
+		try {
+			eval('?>' . $this->doCompile($_smarty_tpl));
+		} catch (\Exception $e) {
+			while (ob_get_level() > $level) {
+				ob_end_clean();
+			}
+			throw $e;
+		}
+		ob_get_clean();
+		$this->timestamp = time();
+		$this->exists = true;
 	}
 
 	/**
@@ -153,11 +183,7 @@ class Compiled extends GeneratedPhpFile {
 	 *
 	 * @throws Exception
 	 */
-	public function compileTemplateSource(Template $_template) {
-		$this->file_dependency = [];
-		$this->includes = [];
-		$this->nocache_hash = null;
-		$this->unifunc = null;
+	public function compileAndWrite(Template $_template) {
 		// compile locking
 		if ($saved_timestamp = (!$_template->getSource()->handler->recompiled && is_file($this->filepath))) {
 			$saved_timestamp = $this->getTimeStamp();
@@ -166,7 +192,7 @@ class Compiled extends GeneratedPhpFile {
 		// compile locking
 		try {
 			// call compiler
-			$this->write($_template, $_template->getCompiler()->compileTemplate($_template));
+			$this->write($_template, $this->doCompile($_template));
 		} catch (\Exception $e) {
 			// restore old timestamp in case of error
 			if ($saved_timestamp && is_file($this->filepath)) {
@@ -176,6 +202,22 @@ class Compiled extends GeneratedPhpFile {
 		}
 	}
 
+	/**
+	 * Do the actual compiling.
+	 *
+	 * @param Template $_smarty_tpl
+	 *
+	 * @return string
+	 * @throws Exception
+	 */
+	private function doCompile(Template $_smarty_tpl): string {
+		$this->file_dependency = [];
+		$this->includes = [];
+		$this->nocache_hash = null;
+		$this->unifunc = null;
+		return $_smarty_tpl->getCompiler()->compileTemplate($_smarty_tpl);
+	}
+
 	/**
 	 * Write compiled code by handler
 	 *
@@ -203,11 +245,11 @@ class Compiled extends GeneratedPhpFile {
 	 * Load fresh compiled template by including the PHP file
 	 * HHVM requires a workaround because of a PHP incompatibility
 	 *
-	 * @param \Smarty\Template $_smarty_tpl do not change variable name, is used by compiled template
+	 * @param Template $_smarty_tpl do not change/remove variable name, is used by compiled template
+	 *
 	 */
 	private function loadCompiledTemplate(Template $_smarty_tpl) {
-		$compileCheck = $_smarty_tpl->compile_check;
-		$_smarty_tpl->compile_check = \Smarty\Smarty::COMPILECHECK_OFF;
+
 		if (function_exists('opcache_invalidate')
 			&& (!function_exists('ini_get') || strlen(ini_get("opcache.restrict_api")) < 1)
 		) {
@@ -220,7 +262,41 @@ class Compiled extends GeneratedPhpFile {
 		} else {
 			include $this->filepath;
 		}
-		$_smarty_tpl->compile_check = $compileCheck;
+
+	}
+
+	/**
+	 * This function is executed automatically when a compiled or cached template file is included
+	 * - Decode saved properties from compiled template and cache files
+	 * - Check if compiled or cache file is valid
+	 *
+	 * @param Template $_template
+	 * @param array $properties special template properties
+	 *
+	 * @return bool flag if compiled or cache file is valid
+	 * @throws Exception
+	 */
+	public function isFresh(Template $_template, array $properties): bool {
+
+		// on cache resources other than file check version stored in cache code
+		if (\Smarty\Smarty::SMARTY_VERSION !== $properties['version']) {
+			return false;
+		}
+
+		$is_valid = true;
+		if (!empty($properties['file_dependency']) && $_template->compile_check) {
+			$is_valid = $this->checkFileDependencies($properties['file_dependency'], $_template);
+		}
+
+		$this->isValid = $is_valid;
+		$this->includes = $properties['includes'] ?? [];
+
+		if ($is_valid) {
+			$this->unifunc = $properties['unifunc'];
+			$this->setNocacheCode($properties['has_nocache_code']);
+			$this->file_dependency = $properties['file_dependency'];
+		}
+		return $is_valid && !function_exists($properties['unifunc']);
 	}
 
 }
diff --git a/src/Template/GeneratedPhpFile.php b/src/Template/GeneratedPhpFile.php
index c8aa0f02..6a9c2a51 100644
--- a/src/Template/GeneratedPhpFile.php
+++ b/src/Template/GeneratedPhpFile.php
@@ -2,8 +2,12 @@
 
 namespace Smarty\Template;
 
+use Smarty\Exception;
+use Smarty\Template;
+
 /**
  * Base class for generated PHP files, such as compiled and cached versions of templates and config files.
+ *
  * @author     Rodney Rehm
  */
 abstract class GeneratedPhpFile {
@@ -113,4 +117,37 @@ abstract class GeneratedPhpFile {
 		}
 	}
 
+	/**
+	 * @param $file_dependency
+	 * @param Template $_template
+	 *
+	 * @return bool
+	 * @throws Exception
+	 */
+	protected function checkFileDependencies($file_dependency, Template $_template): bool {
+			// check file dependencies at compiled code
+		foreach ($file_dependency as $_file_to_check) {
+			if ($_file_to_check[2] === 'file') {
+				if ($_template->getSource()->filepath === $_file_to_check[0]) {
+					// do not recheck current template
+					continue;
+				}
+				// file and php types can be checked without loading the respective resource handlers
+				$mtime = is_file($_file_to_check[0]) ? filemtime($_file_to_check[0]) : false;
+			} else {
+				$handler = \Smarty\Resource\BasePlugin::load($_template->getSmarty(), $_file_to_check[2]);
+				if ($handler->checkTimestamps()) {
+					$source = Source::load($_template, $_template->getSmarty(), $_file_to_check[0]);
+					$mtime = $source->getTimeStamp();
+				} else {
+					continue;
+				}
+			}
+			if ($mtime === false || $mtime > $_file_to_check[1]) {
+				return false;
+			}
+		}
+		return true;
+	}
+
 }
diff --git a/tests/UnitTests/CacheResourceTests/_shared/CacheResourceTestCommon.php b/tests/UnitTests/CacheResourceTests/_shared/CacheResourceTestCommon.php
index 98dc7308..42e5ba8b 100644
--- a/tests/UnitTests/CacheResourceTests/_shared/CacheResourceTestCommon.php
+++ b/tests/UnitTests/CacheResourceTests/_shared/CacheResourceTestCommon.php
@@ -353,25 +353,32 @@ abstract class CacheResourceTestCommon extends PHPUnit_Smarty
         $this->smarty->clearAllCache();
         // create and cache templates
         $tpl = $this->smarty->createTemplate('helloworld.tpl');
-        $tpl->writeCachedContent('hello world');
+        $tpl->writeCachedContent('something else 1');
         $tpl2 = $this->smarty->createTemplate('helloworld.tpl', null, 'bar');
-        $tpl2->writeCachedContent('hello world');
+        $tpl2->writeCachedContent('something else 2');
         $tpl3 = $this->smarty->createTemplate('helloworld.tpl', 'buh|blar');
-        $tpl3->writeCachedContent('hello world');
+        $tpl3->writeCachedContent('something else 3');
         // test cached content
+        $this->assertEquals('something else 1', $tpl->getCachedContent());
+        $this->assertEquals('something else 2', $tpl2->getCachedContent());
+        $this->assertEquals('something else 3', $tpl3->getCachedContent());
+        sleep(10);
+        $tpl4 = $this->smarty->createTemplate('helloworld2.tpl');
+        $tpl4->writeCachedContent('something else 4');
+
+        // test number of deleted caches
+        $this->doClearCacheAssertion(3,$this->smarty->clearAllCache(5));
+
+	    $tpl = $this->smarty->createTemplate('helloworld.tpl');
+	    $tpl2 = $this->smarty->createTemplate('helloworld.tpl', null, 'bar');
+	    $tpl3 = $this->smarty->createTemplate('helloworld.tpl', 'buh|blar');
+	    $tpl4 = $this->smarty->createTemplate('helloworld2.tpl');
+
+        // test that caches are deleted properly
         $this->assertEquals('hello world', $tpl->getCachedContent());
         $this->assertEquals('hello world', $tpl2->getCachedContent());
         $this->assertEquals('hello world', $tpl3->getCachedContent());
-        sleep(10);
-        $tpl4 = $this->smarty->createTemplate('helloworld2.tpl');
-        $tpl4->writeCachedContent('hello world');
-        // test number of deleted caches
-        $this->doClearCacheAssertion(3,$this->smarty->clearAllCache(5));
-        // test that caches are deleted properly
-        $this->assertNull($tpl->getCachedContent());
-        $this->assertNull($tpl2->getCachedContent());
-        $this->assertNull($tpl3->getCachedContent());
-        $this->assertEquals('hello world', $tpl4->getCachedContent());
+        $this->assertEquals('something else 4', $tpl4->getCachedContent());
     }
 
     public function testClearCacheCacheFileSub()