* Added internal tag

* Test displaying place in code

tests/DumperTest.php

@@ -2,6 +2,9 @@
 
 namespace Awesomite\VarDumper;
 
+/**
+ * @internal
+ */
 class DumperTest extends BaseTestCase
 {
     /**

tests/FileLineTest.php

@@ -0,0 +1,35 @@
+<?php
+
+namespace Awesomite\VarDumper;
+
+/**
+ * @internal
+ */
+class FileLineTest extends BaseTestCase
+{
+    /**
+     * @dataProvider providerDumpers
+     *
+     * @param VarDumperInterface $dumper
+     * @param bool $displayLines
+     */
+    public function testFileLine(VarDumperInterface $dumper, $displayLines)
+    {
+        ob_start();
+        $dumper->dump(1);
+        $contents = ob_get_contents();
+        ob_end_clean();
+        list($firstLine) = explode("\n", $contents);
+        $this->assertSame($displayLines, __FILE__ . ':' . (__LINE__ - 4) . ':' === $firstLine, $contents);
+    }
+
+    public function providerDumpers()
+    {
+        return array(
+            array(new LightVarDumper(true), true),
+            array(new InternalVarDumper(true), true),
+            array(new LightVarDumper(), false),
+            array(new InternalVarDumper(), false),
+        );
+    }
+}