diff --git a/tests/unit-tests/util/conditional-functions.php b/tests/unit-tests/util/conditional-functions.php
index 5da4d4142fd..11ea4308f9f 100644
--- a/tests/unit-tests/util/conditional-functions.php
+++ b/tests/unit-tests/util/conditional-functions.php
@@ -97,6 +97,19 @@ class WC_Tests_Conditional_Functions extends WC_Unit_Test_Case {
 		);
 	}
 
+	/**
+	 * Test wc_site_is_https().
+	 */
+	public function test_wc_site_is_https() {
+		$this->assertFalse( wc_site_is_https() );
+
+		add_filter( 'pre_option_home', function () {
+			return 'https://example.org';
+		} );
+
+		$this->assertTrue( wc_site_is_https() );
+	}
+
 	/**
 	 * Test wc_is_valid_url().
 	 *