Change the path to the trait Testing_Helper

Since the unit tests are moved to tests/php/unit,
change the path of this helper.

Author: kienstra

tests/bootstrap.php

@@ -27,7 +27,7 @@ function _manually_load_plugin() {
 	$plugin_root = dirname( __DIR__ );
 	require $plugin_root . '/vendor/autoload.php';
 	require $plugin_root . '/vendor/antecedent/patchwork/Patchwork.php';
-	require $plugin_root . '/tests/php/trait-testing-helper.php';
+	require $plugin_root . '/tests/php/unit/helpers/trait-testing-helper.php';
 	require $plugin_root . '/block-lab.php';
 }
 tests_add_filter( 'muplugins_loaded', '_manually_load_plugin' );

tests/php/unit/test-class-util.php

@@ -68,6 +68,18 @@ public function test_is_pro() {
 		$this->assertFalse( block_lab()->is_pro() );
 	}
 
+	/**
+	 * Test loop.
+	 *
+	 * @covers \Block_Lab\Util::loop()
+	 */
+	public function test_loop() {
+		$this->assertEquals( 'Block_Lab\\Blocks\Loop', get_class( $this->instance->loop() ) );
+
+		// Calling this singleton function repeatedly should return the same instance of the Loop.
+		$this->assertEquals( $this->instance->loop(), $this->instance->loop() );
+	}
+
 	/**
 	 * Test get_template_locations.
 	 *