PhpInterpreter: added hasExtension()

src/Runner/PhpInterpreter.php

@@ -149,4 +149,14 @@ public function getShortInfo()
 			. ($this->info->hhvmVersion ? "; HHVM {$this->info->hhvmVersion}" : '');
 	}
 
+
+	/**
+	 * @param  string
+	 * @return bool
+	 */
+	public function hasExtension($name)
+	{
+		return in_array(strtolower($name), array_map('strtolower', $this->info->extensions), TRUE);
+	}
+
 }

tests/Runner/PhpInterpreter.phpt

@@ -0,0 +1,10 @@
+<?php
+
+use Tester\Assert;
+
+require __DIR__ . '/../bootstrap.php';
+
+$interpreter = createInterpreter();
+
+Assert::true($interpreter->hasExtension('DaTe'));
+Assert::false($interpreter->hasExtension('foo-bar'));