failing test, that I can't figure out

test/unit/php/includes/core/classes/endpoints/class-test-endpoint.php

@@ -0,0 +1,87 @@
+<?php
+/**
+ * Class handles unit tests for GatherPress\Core\Endpoints\Endpoint.
+ *
+ * @package GatherPress\Core
+ * @since 1.0.0
+ */
+
+namespace GatherPress\Tests\Core\Endpoints;
+
+use GatherPress\Core\Endpoints\Endpoint;
+use GatherPress\Core\Endpoints\Endpoint_Redirect;
+use GatherPress\Core\Endpoints\Endpoint_Template;
+use PMC\Unit_Test\Base;
+use PMC\Unit_Test\Utility;
+
+/**
+ * Class Test_Endpoint.
+ *
+ * @coversDefaultClass \GatherPress\Core\Endpoints\Endpoint
+ * @group              endpoints
+ */
+class Test_Endpoint extends Base {
+	/**
+	 * Coverage for __construct method.
+	 *
+	 * @covers ::__construct
+	 *
+	 * @return void
+	
+	public function test___construct(): void {
+		$slug             = 'custom-endpoint';
+		$callback         = function () {
+			return array(
+				'file_name' => 'endpoint-template.php',
+				'dir_path'  => '/path/to/theme',
+			);
+		};
+		$plugin_default   = '/mock/plugin/templates';
+		$template_default = '/default/template.php';
+
+		// Create a mock for Endpoint.
+		$endpoint_template = new Endpoint_Template( $slug, $callback, $plugin_default );
+
+	} */
+
+	/**
+	 * Coverage for get_slugs method.
+	 *
+	 * @covers ::get_slugs
+	 *
+	 * @return void
+	 */
+	public function test_get_slugs(): void {
+
+		// // Simulate 'init' hook being fired
+		// \do_action('init');
+
+		$callback = function(){};
+		$instance = new Endpoint(
+			'query_var',
+			'post',
+			$callback,
+			array(
+				new Endpoint_Template( 'endpoint_template_1', $callback ),
+				new Endpoint_Template( 'endpoint_template_2', $callback ),
+				new Endpoint_Redirect( 'endpoint_redirect_1', $callback ),
+			),
+			'reg_ex',
+		);
+		// var_dump($instance->types);
+
+		$this->assertSame(
+			array(
+				'endpoint_template_1',
+				'endpoint_template_2',
+				'endpoint_redirect_1',
+			),
+			Utility::invoke_hidden_method( $instance, 'get_slugs' ),
+			'Failed to assert that endpoint slugs match.'
+		);
+
+		// $this->mock->wp()->reset();
+
+	}
+
+}