Added PHPUnit test cases

Author: ip2location

composer.json

@@ -10,5 +10,8 @@
         "email": "[email protected]",
         "homepage": "https://www.ip2location.com"
         }
-    ]
+    ],
+    "require-dev": {
+        "phpunit/phpunit": "^9"
+    }
 }

phpunit.xml

@@ -0,0 +1,7 @@
+<phpunit bootstrap="tests/bootstrap.php" colors="true">
+	<testsuites>
+		<testsuite name="IP2Location CodeIgniter Testcase">
+			<directory suffix="Test.php">./tests/</directory>
+		</testsuite>
+	</testsuites>
+</phpunit>

tests/FunctionTest.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+use PHPUnit\Framework\TestCase;
+
+require_once './libraries/IP2Location_lib.php';
+
+class FunctionTest extends TestCase
+{
+	public function testGetDb() {
+		$ipl = new \App\Libraries\IP2Location_lib();
+		$countryCode = $ipl->getCountryCode('8.8.8.8');
+
+		$this->assertEquals(
+			'US',
+			$countryCode,
+		);
+	}
+
+	public function testGetWebService() {
+		$ipl = new \App\Libraries\IP2Location_lib();
+		$record = $ipl->getWebService('8.8.8.8');
+
+		$this->assertEquals(
+			'US',
+			$record['country_code'],
+		);
+	}
+}

tests/bootstrap.php

@@ -0,0 +1,9 @@
+<?php
+
+declare(strict_types=1);
+
+if (!$loader = @include './vendor/autoload.php') {
+    die('Project dependencies missing');
+}
+
+$loader->add('IP2Location\Test', __DIR__);