Add tests for Utilities::get_site_domain().

tests/phpunit/tests/Utilities/Utilities_GetSiteDomainTest.php

@@ -0,0 +1,149 @@
+<?php
+/**
+ * Class Utilities_GetSiteDomainTest
+ *
+ * @package AspireUpdate
+ */
+
+/**
+ * Tests for Utilities::get_site_domain()
+ *
+ * @covers \AspireUpdate\Utilities::get_site_domain
+ */
+class Utilities_GetSiteDomainTest extends WP_UnitTestCase {
+	/**
+	 * The user ID of an administrator.
+	 *
+	 * @var int
+	 */
+	private static $admin_id;
+
+	/**
+	 * Creates an administrator user before any tests run.
+	 *
+	 * @return void
+	 */
+	public static function set_up_before_class() {
+		parent::set_up_before_class();
+
+		self::$admin_id = self::factory()->user->create(
+			[
+				'role' => 'administrator',
+			]
+		);
+
+		wp_set_current_user( self::$admin_id );
+		grant_super_admin( self::$admin_id );
+	}
+
+	/**
+	 * Test that the site's domain is retrieved in single-site.
+	 *
+	 * @dataProvider data_single_site_domains
+	 *
+	 * @group ms-excluded
+	 *
+	 * @param string $site_url The site's URL.
+	 * @param string $expected The site's domain.
+	 */
+	public function test_should_get_site_domain_in_single_site( $site_url, $expected ) {
+		update_option( 'siteurl', $site_url );
+		$this->assertSame( $expected, AspireUpdate\Utilities::get_site_domain() );
+	}
+
+	/**
+	 * Data provider.
+	 *
+	 * @return array[]
+	 */
+	public function data_single_site_domains() {
+		return [
+			'HTTP, a single-part TLD and no WWW'  => [
+				'site_url' => 'http://my-site.org',
+				'expected' => 'my-site.org',
+			],
+			'HTTP, a two-part TLD and no WWW'     => [
+				'site_url' => 'http://my-site.org.uk',
+				'expected' => 'my-site.org.uk',
+			],
+			'HTTP, a single-part TLD and WWW'     => [
+				'site_url' => 'http://www.my-site.org',
+				'expected' => 'www.my-site.org',
+			],
+			'HTTP, a two-part TLD and WWW'        => [
+				'site_url' => 'http://www.my-site.org.uk',
+				'expected' => 'www.my-site.org.uk',
+			],
+			'HTTPS, a single-part TLD and no WWW' => [
+				'site_url' => 'https://my-site.org',
+				'expected' => 'my-site.org',
+			],
+			'HTTPS, a two-part TLD and no WWW'    => [
+				'site_url' => 'https://my-site.org.uk',
+				'expected' => 'my-site.org.uk',
+			],
+			'HTTPS, a single-part TLD and WWW'    => [
+				'site_url' => 'https://www.my-site.org',
+				'expected' => 'www.my-site.org',
+			],
+			'HTTPS, a two-part TLD and WWW'       => [
+				'site_url' => 'https://www.my-site.org.uk',
+				'expected' => 'www.my-site.org.uk',
+			],
+		];
+	}
+
+	/**
+	 * Test that the main site's domain is retrieved when on a sub-site in multisite.
+	 *
+	 * @dataProvider data_multisite_domains
+	 *
+	 * @group ms-required
+	 *
+	 * @param string $main_site_domain The main site's domain.
+	 */
+	public function test_should_get_main_site_domain_in_multisite_subsite( $main_site_domain ) {
+		add_filter(
+			'get_network',
+			static function ( $network ) use ( $main_site_domain ) {
+				$network->domain = $main_site_domain;
+				return $network;
+			}
+		);
+
+		$new_blog_id = self::factory()->blog->create(
+			[
+				'domain'  => 'second-site.' . str_replace( 'www.', '', $main_site_domain ),
+				'user_id' => self::$admin_id,
+			]
+		);
+
+		switch_to_blog( $new_blog_id );
+		$actual = AspireUpdate\Utilities::get_site_domain();
+		restore_current_blog();
+
+		$this->assertSame( $main_site_domain, $actual );
+	}
+
+	/**
+	 * Data provider.
+	 *
+	 * @return array[]
+	 */
+	public function data_multisite_domains() {
+		return [
+			'a single-part TLD and no WWW' => [
+				'main_site_domain' => 'main-site.org',
+			],
+			'a two-part TLD and no WWW'    => [
+				'main_site_domain' => 'main-site.org.uk',
+			],
+			'a single-part TLD and WWW'    => [
+				'main_site_domain' => 'www.main-site.org',
+			],
+			'a two-part TLD and WWW'       => [
+				'main_site_domain' => 'www.main-site.org.uk',
+			],
+		];
+	}
+}