Merge pull request #7 from phpcr/finder_error

Throw appropriate exception if no paths provided to finder

Author: dantleech

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;
     }
 

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();
+    }
 }