diff --git a/classes/outage.php b/classes/outage.php
index 1520632..d167148 100644
--- a/classes/outage.php
+++ b/classes/outage.php
@@ -74,7 +74,7 @@ class outage
 
     /**
      * outage constructor.
-     * @param mixed $data An object, an array or null.
+     * @param object|array|null The data for the outage.
      */
     public function __construct($data = null) {
         if (is_null($data)) {
diff --git a/tests/outage_test.php b/tests/outage_test.php
new file mode 100644
index 0000000..d955874
--- /dev/null
+++ b/tests/outage_test.php
@@ -0,0 +1,42 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Tests performed on outage class.
+ *
+ * @package    auth_outage
+ * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
+ * @copyright  Catalyst IT
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+use \auth_outage\outage;
+
+defined('MOODLE_INTERNAL') || die();
+
+
+class outage_test extends basic_testcase
+{
+    public function test_constructor() {
+        $outage = new outage();
+        // Very important, this should never change.
+        self::assertNull($outage->id, 'New empty outage can never have an id set.');
+        // Ensure all other fields are also null.
+        foreach ($outage as $k=>$v) {
+            self::assertNull($v);
+        }
+    }
+}
diff --git a/tests/outageutils_test.php b/tests/outageutils_test.php
new file mode 100644
index 0000000..f56d117
--- /dev/null
+++ b/tests/outageutils_test.php
@@ -0,0 +1,74 @@
+<?php
+// This file is part of Moodle - http://moodle.org/
+//
+// Moodle is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// Moodle is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
+
+/**
+ * Tests performed on outageutils class.
+ *
+ * @package    auth_outage
+ * @author     Daniel Thee Roperto <daniel.roperto@catalyst-au.net>
+ * @copyright  Catalyst IT
+ * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
+ */
+
+use \auth_outage\outageutils;
+
+defined('MOODLE_INTERNAL') || die();
+
+
+class outageutils_test extends basic_testcase
+{
+    public function test_data2object() {
+        // Using object data, no new fields, not strict.
+        $obj = new stdClass();
+        $obj->foo = 'bar';
+        $obj->number = 42;
+        $data = new stdClass();
+        $data->foo = 'not bar';
+        outageutils::data2object($data, $obj, false);
+        self::assertEquals(get_object_vars($obj), ['foo' => 'not bar', 'number' => 42], 'Invalid result.');
+        self::assertEquals(get_object_vars($data), ['foo' => 'not bar'], 'Data should not change.');
+
+        // Using array data, with new fields, not strict.
+        $obj = new stdClass();
+        $obj->foo = 'bar';
+        $obj->number = 42;
+        $data = ['foo' => 'foobar', 'flag' => false];
+        outageutils::data2object($data, $obj, false);
+        self::assertEquals(get_object_vars($obj), ['foo' => 'foobar', 'number' => 42], 'Invalid result.');
+
+        // Using object data, no new fields, strict.
+        $obj = new stdClass();
+        $obj->foo = 'bar';
+        $obj->number = 42;
+        $data = new stdClass();
+        $data->foo = 'not bar';
+        outageutils::data2object($data, $obj, true);
+        self::assertEquals(get_object_vars($obj), ['foo' => 'not bar', 'number' => 42], 'Invalid result.');
+        self::assertEquals(get_object_vars($data), ['foo' => 'not bar'], 'Data should not change.');
+
+        // Using array data, with new fields, strict.
+        $obj = new stdClass();
+        $obj->foo = 'bar';
+        $obj->number = 42;
+        $data = ['foo' => 'foobar', 'flag' => false];
+        try {
+            outageutils::data2object($data, $obj, true);
+            $this->fail('Exception was expected.');
+        }
+        catch (InvalidArgumentException $e){
+        }
+    }
+}