Can import config from environment variables.

Author: Rezouce

src/MailCatcher.php

@@ -25,17 +25,37 @@ class MailCatcher extends Module
      * Initialize from configuration.
      */
     public function _initialize()
+    {
+        if (isset($this->config['fromEnv']) && $this->config['fromEnv']) {
+            $this->loadFromEnv();
+        } else {
+            $this->loadFromConfig();
+        }
+
+        if (isset($this->config['resetBeforeEachTest'])) {
+            $this->resetBeforeEachTest = $this->config['resetBeforeEachTest'];
+        }
+    }
+
+    private function loadFromEnv()
     {
         if (isset($this->config['url'])) {
-            $this->url = trim($this->config['url'], '/');
+            $this->url = trim(getenv($this->config['url']), '/');
         }
 
         if (isset($this->config['port'])) {
-            $this->port = $this->config['port'];
+            $this->port = getenv($this->config['port']);
         }
+    }
 
-        if (isset($this->config['resetBeforeEachTest'])) {
-            $this->resetBeforeEachTest = $this->config['resetBeforeEachTest'];
+    private function loadFromConfig()
+    {
+        if (isset($this->config['url'])) {
+            $this->url = trim($this->config['url'], '/');
+        }
+
+        if (isset($this->config['port'])) {
+            $this->port = $this->config['port'];
         }
     }