diff --git a/tests/API/GBFS/DiscoveryRouteTest.php b/tests/API/GBFS/DiscoveryRouteTest.php
new file mode 100644
index 000000000..2a02ada28
--- /dev/null
+++ b/tests/API/GBFS/DiscoveryRouteTest.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace CommonsBooking\Tests\API\GBFS;
+
+use CommonsBooking\Tests\API\CB_REST_Route_UnitTestCase;
+
+/**
+ * TODO: add result unit test
+ */
+class DiscoveryRouteTest extends CB_REST_Route_UnitTestCase {
+
+	protected $ENDPOINT = '/commonsbooking/v1/gbfs.json';
+}
\ No newline at end of file
diff --git a/tests/API/GBFS/StationInformationRouteTest.php b/tests/API/GBFS/StationInformationRouteTest.php
new file mode 100644
index 000000000..cf35e137b
--- /dev/null
+++ b/tests/API/GBFS/StationInformationRouteTest.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace CommonsBooking\Tests\API\GBFS;
+
+use CommonsBooking\Tests\API\CB_REST_Route_UnitTestCase;
+
+/**
+ * TODO: add result unit test
+ */
+class StationInformationRouteTest extends CB_REST_Route_UnitTestCase {
+
+	protected $ENDPOINT = '/commonsbooking/v1/station_information.json';
+}
\ No newline at end of file
diff --git a/tests/API/GBFS/StationStatusRouteTest.php b/tests/API/GBFS/StationStatusRouteTest.php
new file mode 100644
index 000000000..ba44f9c5a
--- /dev/null
+++ b/tests/API/GBFS/StationStatusRouteTest.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace CommonsBooking\Tests\API\GBFS;
+
+use CommonsBooking\Tests\API\CB_REST_Route_UnitTestCase;
+
+/**
+ * TODO: add result unit test
+ */
+class StationStatusRouteTest extends CB_REST_Route_UnitTestCase {
+
+	protected $ENDPOINT = '/commonsbooking/v1/station_status.json';
+}
\ No newline at end of file
diff --git a/tests/API/GBFS/SystemInformationRouteTest.php b/tests/API/GBFS/SystemInformationRouteTest.php
new file mode 100644
index 000000000..0e0a22bf3
--- /dev/null
+++ b/tests/API/GBFS/SystemInformationRouteTest.php
@@ -0,0 +1,13 @@
+<?php
+
+namespace CommonsBooking\Tests\API\GBFS;
+
+use CommonsBooking\Tests\API\CB_REST_Route_UnitTestCase;
+
+/**
+ * TODO: add result unit test
+ */
+class SystemInformationRouteTest extends CB_REST_Route_UnitTestCase {
+
+	protected $ENDPOINT = '/commonsbooking/v1/system_information.json';
+}
\ No newline at end of file
diff --git a/tests/API/ItemsRouteTest.php b/tests/API/ItemsRouteTest.php
new file mode 100644
index 000000000..b97a56b2e
--- /dev/null
+++ b/tests/API/ItemsRouteTest.php
@@ -0,0 +1,10 @@
+<?php
+
+namespace CommonsBooking\Tests\API;
+
+/**
+ * TODO: add route result test case
+ */
+class ItemsRouteTest extends CB_REST_Route_UnitTestCase {
+	protected $ENDPOINT = '/commonsbooking/v1/items';
+}
diff --git a/tests/API/LocationsRouteTest.php b/tests/API/LocationsRouteTest.php
new file mode 100644
index 000000000..e7a5dd27f
--- /dev/null
+++ b/tests/API/LocationsRouteTest.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace CommonsBooking\Tests\API;
+
+/**
+ * TODO: add route result test case
+ */
+class LocationsRouteTest extends CB_REST_Route_UnitTestCase {
+
+	protected $ENDPOINT = '/commonsbooking/v1/locations';
+}
\ No newline at end of file
diff --git a/tests/API/ProjectsRouteTest.php b/tests/API/ProjectsRouteTest.php
new file mode 100644
index 000000000..26d9cc32a
--- /dev/null
+++ b/tests/API/ProjectsRouteTest.php
@@ -0,0 +1,11 @@
+<?php
+
+namespace CommonsBooking\Tests\API;
+
+/**
+ * TODO: add route result test case
+ */
+class ProjectsRouteTest extends CB_REST_Route_UnitTestCase {
+
+	protected $ENDPOINT = '/commonsbooking/v1/projects';
+}
\ No newline at end of file
diff --git a/tests/bootstrap.php b/tests/bootstrap.php
index 413490ef5..694a2bb12 100644
--- a/tests/bootstrap.php
+++ b/tests/bootstrap.php
@@ -20,11 +20,13 @@
 // Give access to tests_add_filter() function.
 require_once "{$_tests_dir}/includes/functions.php";
 
-/**
- * Manually load the plugin being tested.
- */
-function _manually_load_plugin() {
-	require dirname( dirname( __FILE__ ) ) . '/commonsbooking.php';
+if ( ! function_exists( '_manually_load_plugin' ) ) {
+	/**
+	 * Manually load the plugin being tested.
+	 */
+	function _manually_load_plugin() {
+		require dirname( dirname( __FILE__ ) ) . '/commonsbooking.php';
+	}
 }
 
 tests_add_filter( 'muplugins_loaded', '_manually_load_plugin' );
@@ -32,4 +34,4 @@ function _manually_load_plugin() {
 require_once dirname( __FILE__, 2 ) . '/vendor/yoast/phpunit-polyfills/phpunitpolyfills-autoload.php';
 
 // Start up the WP testing environment.
-require "{$_tests_dir}/includes/bootstrap.php";
+require_once "{$_tests_dir}/includes/bootstrap.php";