Initial unit tests, code cleanup

tests/src/DatasetManagerTest.php

@@ -0,0 +1,21 @@
+<?php
+
+namespace NoccyLabs\Dataset;
+
+defined("NOCCYLABS_DATASET_TEST") || define("NOCCYLABS_DATASET_TEST", true);
+
+class DatasetManagerTest extends \PHPUnit\Framework\TestCase
+{
+
+    /**
+     * @covers DatasetManager::__construct
+     * @covers DatasetManager::determineVendorPath
+     */
+    public function testCreatingTheDatasetManager()
+    {
+        $dm = new DatasetManager();
+    
+        $sets = $dm->getAvailableDatasets();
+        $this->assertEquals(1, count($sets), "Expected 1 loaded set");
+    }
+}