simPod
diff --git a/‎src/Symfony/Component/Config/Tests/Fixtures/Util/not_readable.xml b/‎src/Symfony/Component/Config/Tests/Fixtures/Util/not_readable.xml
diff --git a/‎src/Symfony/Component/Config/Tests/Util/XmlUtilsTest.php
Lines changed: 27 additions & 2 deletions b/‎src/Symfony/Component/Config/Tests/Util/XmlUtilsTest.php
Lines changed: 27 additions & 2 deletions
diff --git a/‎src/Symfony/Component/Config/Util/XmlUtils.php
Lines changed: 10 additions & 1 deletion b/‎src/Symfony/Component/Config/Util/XmlUtils.php
Lines changed: 10 additions & 1 deletion
@@ -20,6 +20,31 @@ public function testLoadFile()
     {
         $fixtures = __DIR__.'/../Fixtures/Util/';
 
+        try {
+            XmlUtils::loadFile($fixtures);
+            $this->fail();
+        } catch (\InvalidArgumentException $e) {
+            $this->assertStringContainsString('is not a file', $e->getMessage());
+        }
+
+        try {
+            XmlUtils::loadFile($fixtures.'non_existing.xml');
+            $this->fail();
+        } catch (\InvalidArgumentException $e) {
+            $this->assertStringContainsString('is not a file', $e->getMessage());
+        }
+
+        try {
+            if ('\\' === \DIRECTORY_SEPARATOR) {
+                $this->markTestSkipped('chmod is not supported on Windows');
+            }
+            chmod($fixtures.'not_readable.xml', 000);
+            XmlUtils::loadFile($fixtures.'not_readable.xml');
+            $this->fail();
+        } catch (\InvalidArgumentException $e) {
+            $this->assertStringContainsString('is not readable', $e->getMessage());
+        }
+
         try {
             XmlUtils::loadFile($fixtures.'invalid.xml');
             $this->fail();
@@ -165,7 +190,7 @@ public function testLoadEmptyXmlFile()
         $file = __DIR__.'/../Fixtures/foo.xml';
 
         $this->expectException('InvalidArgumentException');
-        $this->expectExceptionMessage(sprintf('File %s does not contain valid XML, it is empty.', $file));
+        $this->expectExceptionMessage(sprintf('File "%s" does not contain valid XML, it is empty.', $file));
 
         XmlUtils::loadFile($file);
     }
@@ -186,7 +211,7 @@ public function testLoadWrongEmptyXMLWithErrorHandler()
                 XmlUtils::loadFile($file);
                 $this->fail('An exception should have been raised');
             } catch (\InvalidArgumentException $e) {
-                $this->assertEquals(sprintf('File %s does not contain valid XML, it is empty.', $file), $e->getMessage());
+                $this->assertEquals(sprintf('File "%s" does not contain valid XML, it is empty.', $file), $e->getMessage());
             }
         } finally {
             restore_error_handler();
 
@@ -122,9 +122,18 @@ public static function parse($content, $schemaOrCallable = null)
      */
     public static function loadFile($file, $schemaOrCallable = null)
     {
+        if (!is_file($file)) {
+            throw new \InvalidArgumentException(sprintf('Resource "%s" is not a file.', $file));
+        }
+
+        if (!is_readable($file)) {
+            throw new \InvalidArgumentException(sprintf('File "%s" is not readable.', $file));
+        }
+
         $content = @file_get_contents($file);
+
         if ('' === trim($content)) {
-            throw new \InvalidArgumentException(sprintf('File %s does not contain valid XML, it is empty.', $file));
+            throw new \InvalidArgumentException(sprintf('File "%s" does not contain valid XML, it is empty.', $file));
         }
 
         try {