Including Tests and verifications for errors

tests/oauthTest.php

@@ -0,0 +1,34 @@
+<?php
+declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+use BrunoFontes\Memsource;
+
+final class oauthTest extends TestCase
+{
+    public function testOauthGetAuthorizationCodeUrl()
+    {
+        $customServerURL = 'http://myPersonalMemsource.com';
+        $api = new Memsource(null, $customServerURL);
+        $expected = $customServerURL . '/oauth/authorize?response_type=code&client_id=id&redirect_uri=http%3A%2F%2Furi&scope=openid';
+        $memsourceUrl = $api->oauth()->getAuthorizationCodeUrl('id', 'http://uri');
+        $this->assertEquals(
+            $expected,
+            $memsourceUrl
+        );
+    }
+
+    public function testGetAccessTokenExceptionOnFakeCode()
+    {
+        $api = new Memsource();
+        $this->expectException(\Exception::class);
+        $token = $api->oauth()->getAccessToken('fakeCode', 'fakeId', 'fakePass', 'http://any');
+    }
+
+    public function testGetAccessTokenExceptionOnEmptyCode()
+    {
+        $api = new Memsource();
+        $this->expectException(\Exception::class);
+        $token = $api->oauth()->getAccessToken('', '', '', '');
+    }
+}