added FeedGroup to Tab Settings UnitTest

Author: dev-victoria

app/src/test/java/org/schabi/newpipe/settings/tabs/TabsJsonHelperTest.java

@@ -93,9 +93,11 @@ public void testSaveAndReading() throws JsonParserException {
         final Tab.ChannelTab channelTab = new Tab.ChannelTab(
                 666, "https://example.org", "testName");
         final Tab.KioskTab kioskTab = new Tab.KioskTab(123, "trending_key");
+        final Tab.FeedGroupTab feedGroupTab = new Tab.FeedGroupTab(
+                1L, "x", 123);
 
         final List<Tab> tabs = Arrays.asList(
-                blankTab, defaultKioskTab, subscriptionsTab, channelTab, kioskTab);
+                blankTab, defaultKioskTab, subscriptionsTab, channelTab, kioskTab, feedGroupTab);
         final String returnedJson = TabsJsonHelper.getJsonToSave(tabs);
 
         // Reading
@@ -130,5 +132,13 @@ public void testSaveAndReading() throws JsonParserException {
         assertEquals(kioskTab.getTabId(), kioskTabFromReturnedJson.getTabId());
         assertEquals(kioskTab.getKioskServiceId(), kioskTabFromReturnedJson.getKioskServiceId());
         assertEquals(kioskTab.getKioskId(), kioskTabFromReturnedJson.getKioskId());
+
+        final Tab.FeedGroupTab grpTabFromReturnedJson = requireNonNull(
+                (Tab.FeedGroupTab) Tab.from((JsonObject) tabsFromArray.get(5)
+                ));
+        assertEquals(feedGroupTab.getTabId(), grpTabFromReturnedJson.getTabId());
+        assertEquals(feedGroupTab.getFeedGroupId(), grpTabFromReturnedJson.getFeedGroupId());
+        assertEquals(feedGroupTab.getIconId(), grpTabFromReturnedJson.getIconId());
+        assertEquals(feedGroupTab.getFeedGroupName(), grpTabFromReturnedJson.getFeedGroupName());
     }
 }