[feature/template-engine] Added tests for template inheritance.

PHPBB3-9726

tests/template/parent_templates/parent_and_child.html

@@ -0,0 +1 @@
+Parent template.

tests/template/parent_templates/parent_only.html

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+Only in parent.

tests/template/template_inheritance_test.php

@@ -0,0 +1,74 @@
+<?php
+/**
+*
+* @package testing
+* @copyright (c) 2011 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+require_once dirname(__FILE__) . '/template_test_case.php';
+
+class phpbb_template_template_inheritance_test extends phpbb_template_template_test_case
+{
+	/**
+	 * @todo put test data into templates/xyz.test
+	 */
+	public static function template_data()
+	{
+		return array(
+			// First element of the array is test name - keep them distinct
+			array(
+				'simple inheritance - only parent template exists',
+				'parent_only.html',
+				array(),
+				array(),
+				array(),
+				"Only in parent.",
+			),
+			array(
+				'simple inheritance - only child template exists',
+				'child_only.html',
+				array(),
+				array(),
+				array(),
+				"Only in child.",
+			),
+			array(
+				'simple inheritance - both parent and child templates exist',
+				'parent_and_child.html',
+				array(),
+				array(),
+				array(),
+				"Child template.",
+			),
+		);
+	}
+
+	/**
+	* @dataProvider template_data
+	*/
+	public function test_template($name, $file, array $vars, array $block_vars, array $destroy, $expected)
+	{
+		$cache_file = $this->template->cachepath . str_replace('/', '.', $file) . '.php';
+
+		$this->assertFileNotExists($cache_file);
+
+		$this->run_template($file, $vars, $block_vars, $destroy, $expected, $cache_file);
+
+		// Reset the engine state
+		$this->setup_engine();
+
+		$this->run_template($file, $vars, $block_vars, $destroy, $expected, $cache_file);
+	}
+
+	protected function setup_engine()
+	{
+		global $phpbb_root_path, $phpEx, $config, $user;
+
+		$this->template_path = dirname(__FILE__) . '/templates';
+		$this->parent_template_path = dirname(__FILE__) . '/parent_templates';
+		$this->template = new phpbb_template($phpbb_root_path, $phpEx, $config, $user);
+		$this->template->set_custom_template($this->template_path, 'tests', $this->parent_template_path);
+	}
+}

tests/template/templates/child_only.html

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+Only in child.

tests/template/templates/parent_and_child.html

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+Child template.