Add configuration helper (consolidator) class and unit tests

common/framework/helpers/confighelper.php

@@ -0,0 +1,89 @@
+<?php
+
+namespace Rhymix\Framework\Helpers;
+
+use Rhymix\Framework\Config;
+use Rhymix\Framework\Plugin;
+
+/**
+ * Config helper class.
+ */
+class ConfigHelper
+{
+	/**
+	 * Cache plugin configuration during consolidation.
+	 */
+	protected static $_config_cache = array();
+	
+	/**
+	 * Consolidate configuration from multiple sources.
+	 * 
+	 * @param array $format
+	 * @return array
+	 */
+	public static function consolidate($format)
+	{
+		self::$_config_cache = array();
+		$result = array();
+		
+		foreach ($format as $key => $value)
+		{
+			$result[$key] = self::_parseConfigValue((array)$value);
+		}
+		
+		self::$_config_cache = array();
+		return $result;
+	}
+	
+	/**
+	 * Parse and get a configuration value.
+	 * 
+	 * @param array $value
+	 * @return mixed
+	 */
+	protected static function _parseConfigValue(array $value)
+	{
+		foreach ($value as $option)
+		{
+			$option = array_map('trim', explode(':', $option, 2));
+			if (count($option) === 1)
+			{
+				$result = Config::get($option[0]);
+				if ($result !== null)
+				{
+					return $result;
+				}
+			}
+			else
+			{
+				if (!isset(self::$_config_cache[$option[0]]))
+				{
+					self::$_config_cache[$option[0]] = getModel('module')->getModuleConfig($option[0]) ?: null;
+				}
+				$options = explode('.', $option[1]);
+				$temp = self::$_config_cache[$option[0]];
+				foreach ($options as $step)
+				{
+					if (is_object($temp) && isset($temp->$step))
+					{
+						$temp = $temp->$step;
+					}
+					elseif (is_array($temp) && isset($temp[$step]))
+					{
+						$temp = $temp[$step];
+					}
+					else
+					{
+						$temp = null;
+					}
+				}
+				if ($temp !== null)
+				{
+					return $temp;
+				}
+			}
+		}
+		
+		return null;
+	}
+}

tests/unit/framework/helpers/ConfigHelperTest.php

@@ -0,0 +1,22 @@
+<?php
+
+use Rhymix\Framework\Helpers\ConfigHelper;
+
+class ConfigHelperTest extends \Codeception\TestCase\Test
+{
+	public function testConsolidate()
+	{
+		$member_config = getModel('module')->getModuleConfig('member');
+		$consolidated = ConfigHelper::consolidate(array(
+			'dbtype' => array('db.type', 'member:nosuchconfig'),
+			'member' => array('no.such.config', 'member:enable_join'),
+			'nosuch' => array('no.such.config', 'member:no.such.config.either'),
+			'single' => 'member:identifier',
+		));
+		
+		$this->assertEquals(config('db.type'), $consolidated['dbtype']);
+		$this->assertEquals($member_config->enable_join, $consolidated['member']);
+		$this->assertNull($consolidated['nosuch']);
+		$this->assertEquals($member_config->identifier, $consolidated['single']);
+	}
+}