From 62d64c3b8bb2f475c185178e6ee0d6eda95af1f6 Mon Sep 17 00:00:00 2001
From: dantleech <dan.t.leech@gmail.com>
Date: Mon, 5 Dec 2016 17:51:31 +0000
Subject: [PATCH] Throw appropriate exception if no paths provided to finder

---
 lib/VersionFinder.php            |  5 +++++
 tests/Unit/VersionFinderTest.php | 12 ++++++++++++
 2 files changed, 17 insertions(+)

diff --git a/lib/VersionFinder.php b/lib/VersionFinder.php
index f36885a..7a364d0 100644
--- a/lib/VersionFinder.php
+++ b/lib/VersionFinder.php
@@ -20,6 +20,11 @@ class VersionFinder
 
     public function __construct(array $paths)
     {
+        if (empty($paths)) {
+            throw new \RuntimeException(
+                'No paths were provided to the version finder.'
+            );
+        }
         $this->paths = $paths;
     }
 
diff --git a/tests/Unit/VersionFinderTest.php b/tests/Unit/VersionFinderTest.php
index f1a0098..275ff54 100644
--- a/tests/Unit/VersionFinderTest.php
+++ b/tests/Unit/VersionFinderTest.php
@@ -35,4 +35,16 @@ public function testGetCollection()
         $versions = $collection->getAllVersions();
         $this->assertCount(3, $versions);
     }
+
+    /**
+     * It should do nothing if no migrations paths are given.
+     *
+     * @expectedException \RuntimeException
+     * @expectedExceptionMessage No paths were provided
+     */
+    public function testNoMigrationPaths()
+    {
+        $collection = (new VersionFinder(array()))->getCollection();
+        $versions = $collection->getAllVersions();
+    }
 }