Explain tests

common/test/views/support/cleaner/AffiliateLinksCleanerTest.scala

@@ -16,37 +16,42 @@ class AffiliateLinksCleanerTest extends AnyFlatSpec with Matchers {
   }
 
   "shouldAddAffiliateLinks" should "correctly determine when to add affiliate links" in {
-
+    // the switch is respected
     shouldAddAffiliateLinks(
       switchedOn = false,
       None,
       Set.empty,
       List.empty,
     ) should be(false)
+    // affiliate links are not added when showAffiliateLinks is false
     shouldAddAffiliateLinks(
       switchedOn = true,
       Some(false),
       Set.empty,
       List.empty,
     ) should be(false)
+    // affiliate links are added when showAffiliateLinks is true and there are no alwaysOff tags present
     shouldAddAffiliateLinks(
       switchedOn = true,
       Some(true),
       Set.empty,
       List.empty,
     ) should be(true)
+    // affiliate links are not added when showAffiliateLinks is not defined
     shouldAddAffiliateLinks(
       switchedOn = true,
       None,
       Set.empty,
       List("tech"),
     ) should be(false)
+    // affiliate links are not added when an always off tag is present on the article
     shouldAddAffiliateLinks(
       switchedOn = true,
       Some(true),
       Set("bereavement"),
       List("bereavement"),
     ) should be(false)
+    // affiliate links are added when the tags are considered safe
     shouldAddAffiliateLinks(
       switchedOn = true,
       Some(true),