diff -u b/core/modules/filter/tests/src/Kernel/Plugin/migrate/process/FilterSettingsTest.php b/core/modules/filter/tests/src/Kernel/Plugin/migrate/process/FilterSettingsTest.php
--- b/core/modules/filter/tests/src/Kernel/Plugin/migrate/process/FilterSettingsTest.php
+++ b/core/modules/filter/tests/src/Kernel/Plugin/migrate/process/FilterSettingsTest.php
@@ -17,7 +17,7 @@
 class FilterSettingsTest extends MigrateTestCase {
 
   /**
-   * Tests transformation of image field settings.
+   * Tests transformation of filter settings.
    *
    * @dataProvider dataProvider
    * @covers ::transform
@@ -49,7 +49,7 @@
       // Tests that the transformed value is identical to the input value when
       // destination is not the filter_html.
 
-      // Test with an empty source array
+      // Test with an empty source array.
       [
         [],
         'any_filter',
@@ -75,7 +75,7 @@
       // Tests that the transformed value for 'allowed_html' is altered when the
       // destination is filter_html.
 
-      // Test with an empty source array
+      // Test with an empty source array.
       [
         [],
         'filter_html',