some test changes

tests/FlightTest.php

@@ -0,0 +1,36 @@
+<?php
+
+
+class FlightTest extends TestCase
+{
+    public function setUp()
+    {
+        parent::setUp();
+
+        $this->addData('airline');
+        $this->addData('airports');
+    }
+
+    public function addFlight()
+    {
+        $flight = new App\Models\Flight;
+        $flight->airline_id = 1;
+        $flight->flight_number = 100;
+        $flight->dpt_airport_id = 1;
+        $flight->arr_airport_id = 2;
+        $flight->save();
+    }
+
+    /**
+     * mainly to test the model relationships work correctly
+     */
+    public function testAddFlight()
+    {
+        $this->addFlight();
+
+        $flight = App\Models\Flight::where('flight_number', 100)->first();
+
+        $this->assertEquals($flight->dpt_airport->icao, 'KAUS');
+        $this->assertEquals($flight->arr_airport->icao, 'KJFK');
+    }
+}