feature: tests for the email proecessor (RedHatInsights#2165)

The goal is to have the email processor fully tested.

RHCLOUD-28334

engine/src/main/java/com/redhat/cloud/notifications/processors/SystemEndpointTypeProcessor.java

@@ -61,7 +61,14 @@ protected Set<RecipientSettings> extractRecipientSettings(final Event event, fin
         ).collect(Collectors.toSet());
     }
 
-    protected Set<com.redhat.cloud.notifications.processors.email.connector.dto.RecipientSettings> extractAndTransformRecipientSettings(final Event event, final List<Endpoint> endpoints) {
+    /**
+     * Extracts the recipient settings from the event and the endpoints and
+     * transforms them to a DTO in order to send them to the email connector.
+     * @param event the event to extract the recipient settings from.
+     * @param endpoints the endpoints to extract the recipient settings from.
+     * @return a set of recipient settings DTOs.
+     */
+    public Set<com.redhat.cloud.notifications.processors.email.connector.dto.RecipientSettings> extractAndTransformRecipientSettings(final Event event, final List<Endpoint> endpoints) {
         final Set<RecipientSettings> recipientSettings = this.extractRecipientSettings(event, endpoints);
 
         return recipientSettings

engine/src/main/java/com/redhat/cloud/notifications/processors/email/connector/dto/RecipientSettings.java

@@ -3,6 +3,7 @@
 import com.fasterxml.jackson.databind.PropertyNamingStrategies;
 import com.fasterxml.jackson.databind.annotation.JsonNaming;
 
+import java.util.Objects;
 import java.util.Set;
 import java.util.UUID;
 
@@ -18,6 +19,13 @@ public class RecipientSettings {
     private final UUID groupUUID;
     private final Set<String> users;
 
+    public RecipientSettings(final boolean adminsOnly, final boolean ignoreUserPreferences, final UUID groupUUID, final Set<String> users) {
+        this.adminsOnly = adminsOnly;
+        this.ignoreUserPreferences = ignoreUserPreferences;
+        this.groupUUID = groupUUID;
+        this.users = users;
+    }
+
     public RecipientSettings(final com.redhat.cloud.notifications.recipients.RecipientSettings recipientSettings) {
         this.adminsOnly = recipientSettings.isOnlyAdmins();
         this.ignoreUserPreferences = recipientSettings.isIgnoreUserPreferences();
@@ -40,4 +48,32 @@ public UUID getGroupUUID() {
     public Set<String> getUsers() {
         return this.users;
     }
+
+    @Override
+    public boolean equals(final Object o) {
+        if (this == o) {
+            return true;
+        }
+
+        if (o == null || this.getClass() != o.getClass()) {
+            return false;
+        }
+
+        final RecipientSettings that = (RecipientSettings) o;
+
+        return this.adminsOnly == that.adminsOnly
+            && this.ignoreUserPreferences == that.ignoreUserPreferences
+            && Objects.equals(this.groupUUID, that.groupUUID)
+            && Objects.equals(this.users, that.users);
+    }
+
+    @Override
+    public int hashCode() {
+        return Objects.hash(
+            this.adminsOnly ? 1 : 0,
+            this.ignoreUserPreferences ? 1 : 0,
+            this.groupUUID != null ? this.groupUUID.hashCode() : 0,
+            this.users != null ? this.users.hashCode() : 0
+        );
+    }
 }