FIX gh-227 issue

src/Bartlett/CompatInfo/Analyser/CompatibilityAnalyser.php

@@ -295,6 +295,9 @@ public function leaveNode(Node $node)
         } elseif ($node instanceof Node\Stmt\Use_) {
             $this->computePhpFeatureVersions($node);
 
+        } elseif ($node instanceof Node\Stmt\TraitUse) {
+            $this->computePhpFeatureVersions($node);
+
         } elseif ($node instanceof Node\Stmt\Property) {
             $this->computePhpFeatureVersions($node);
 
@@ -1178,6 +1181,12 @@ private function computePhpFeatureVersions(Node $node)
                 $this->updateContextVersion($versions);
             }
 
+        } elseif ($node instanceof Node\Stmt\TraitUse) {
+            $versions = array('php.min' => '5.4.0');
+            // update current and parent context
+            $this->updateElementVersion($element, $name, $versions);
+            $this->updateContextVersion($versions);
+
         } elseif ($node instanceof Node\Stmt\Property) {
             // implicitly public visibility is PHP 4 syntax
             if ($this->isImplicitlyPublicProperty($this->tokens, $node)) {

tests/PhpFeaturesIssueTest.php

@@ -49,6 +49,7 @@ class PhpFeaturesIssueTest extends \PHPUnit_Framework_TestCase
     const GH218 = 'gh218.php';
     const GH222 = 'gh222.php';
     const GH226 = 'gh226.php';
+    const GH227 = 'gh227.php';
 
     protected static $fixtures;
     protected static $analyserId;
@@ -487,4 +488,28 @@ public function testFeatureGH226()
             $versions
         );
     }
+
+    /**
+     * Regression test for feature GH#227
+     *
+     * @link https://github.com/llaville/php-compat-info/issues/227
+     *       Does not detect Use traits
+     * @group features
+     * @return void
+     */
+    public function testFeatureGH227()
+    {
+        $dataSource = self::$fixtures . self::GH227;
+        $analysers  = array('compatibility');
+        $metrics    = self::$api->run($dataSource, $analysers);
+        $versions   = $metrics[self::$analyserId]['versions'];
+        $this->assertEquals(
+            array(
+                'php.min'      => '5.4.0',
+                'php.max'      => '',
+                'php.all'      => '5.4.0',
+            ),
+            $versions
+        );
+    }
 }

tests/fixtures/gh227.php

@@ -0,0 +1,2 @@
+<?php
+class A { use B; }