From 47f260b5f03d96847f4cd45c9eef9f414a4e8ca3 Mon Sep 17 00:00:00 2001
From: Timothy J Warren <tim@timshomepage.net>
Date: Fri, 24 Mar 2017 16:27:14 -0400
Subject: [PATCH] Test coverage for every line!

---
 src/functions.php       |  2 +-
 tests/functionsTest.php | 33 +++++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+), 1 deletion(-)
 create mode 100644 tests/functionsTest.php

diff --git a/src/functions.php b/src/functions.php
index e5e5ea5..78b20ff 100644
--- a/src/functions.php
+++ b/src/functions.php
@@ -23,7 +23,7 @@ namespace Aviat\Ion;
  * @param string[] ...$args
  * @return string
  */
-function _dir(...$args)
+function _dir(string ...$args): string
 {
 	return implode(DIRECTORY_SEPARATOR, $args);
 }
\ No newline at end of file
diff --git a/tests/functionsTest.php b/tests/functionsTest.php
new file mode 100644
index 0000000..f61b738
--- /dev/null
+++ b/tests/functionsTest.php
@@ -0,0 +1,33 @@
+<?php declare(strict_types=1);
+/**
+ * Ion
+ *
+ * Building blocks for web development
+ *
+ * PHP version 7
+ *
+ * @package     Ion
+ * @author      Timothy J. Warren <tim@timshomepage.net>
+ * @copyright   2015 - 2017 Timothy J. Warren
+ * @license     http://www.opensource.org/licenses/mit-license.html  MIT License
+ * @version     2.0.0
+ * @link        https://git.timshomepage.net/timw4mail/ion
+ */
+
+namespace Aviat\Ion\Tests;
+
+use function Aviat\Ion\_dir;
+
+use PHPUnit\Framework\TestCase;
+
+class functionsTest extends TestCase {
+
+
+	public function test_dir()
+	{
+		$args = ['foo', 'bar', 'baz'];
+		$expected = implode(\DIRECTORY_SEPARATOR, $args);
+
+		$this->assertEquals(_dir(...$args), $expected);
+	}
+}
\ No newline at end of file