diff --git a/tests/integration/FiltersTest.php b/tests/integration/FiltersTest.php
new file mode 100644
index 0000000..ac99f5c
--- /dev/null
+++ b/tests/integration/FiltersTest.php
@@ -0,0 +1,23 @@
+<?php
+/**
+ * @package Plausible Analytics Integration Tests - Helpers
+ */
+
+namespace Plausible\Analytics\Tests\Integration;
+
+use Plausible\Analytics\Tests\TestCase;
+use Plausible\Analytics\WP\Filters;
+
+class FiltersTest extends TestCase {
+	/**
+	 * @see Filters::add_plausible_attributes()
+	 */
+	public function testAddPlausibleAttributes() {
+		$class = new Filters();
+		$tag   = $class->add_plausible_attributes( '<script id="plausible-analytics-js" src="test.js">', 'plausible-analytics' );
+
+		$this->assertStringContainsString( 'example.org', $tag );
+		$this->assertStringContainsString( 'plausible.io/api/event', $tag );
+		$this->assertStringNotContainsString( 'plausible-analytics-js', $tag );
+	}
+}