detect phpdbg and use the driver subsequently

TODO: Move this check into Environment\Runtime

Author: staabm

composer.json

@@ -25,7 +25,7 @@
         "phpunit/php-file-iterator": "~1.3",
         "phpunit/php-token-stream": "~1.3",
         "phpunit/php-text-template": "~1.2",
-        "sebastian/environment": "~1.0",
+        "sebastian/environment": "dev-phpdbg_cc",
         "sebastian/version": "~1.0"
     },
     "require-dev": {
@@ -46,5 +46,12 @@
         "branch-alias": {
             "dev-master": "2.2.x-dev"
         }
-    }
+    },
+    "repositories": [
+        {
+            "type": "vcs",
+            "url": "https://github.com/staabm/environment"
+        }
+    ]
+    
 }

src/CodeCoverage.php

@@ -96,13 +96,17 @@ class PHP_CodeCoverage
     public function __construct(PHP_CodeCoverage_Driver $driver = null, PHP_CodeCoverage_Filter $filter = null)
     {
         if ($driver === null) {
-            $runtime = new Runtime;
+            if (PHP_SAPI === 'phpdbg') {
+                $driver = new PHP_CodeCoverage_Driver_Phpdbg;
+            } else {
+                $runtime = new Runtime;
 
-            if (!$runtime->hasXdebug()) {
-                throw new PHP_CodeCoverage_Exception('No code coverage driver available');
-            }
+                if (!$runtime->hasXdebug()) {
+                    throw new PHP_CodeCoverage_Exception('No code coverage driver available');
+                }
 
-            $driver = new PHP_CodeCoverage_Driver_Xdebug;
+                $driver = new PHP_CodeCoverage_Driver_Xdebug;
+            }
         }
 
         if ($filter === null) {