BottomTab testId (#2668)

lib/android/app/src/main/java/com/reactnativenavigation/parse/BottomTabOptions.java

             throw new RuntimeException("BottomTab must have an icon");
         }
         options.icon = TextParser.parse(json.optJSONObject("icon"), "uri");
+        options.testId = TextParser.parse(json, "testID");
         return options;
     }
 
     public Text title = new NullText();
     public Text icon = new NullText();
+    public Text testId = new NullText();
 
     void mergeWith(final BottomTabOptions other) {
         if (other.title.hasValue()) {

lib/android/app/src/main/java/com/reactnativenavigation/viewcontrollers/BottomTabsController.java

 		this.tabs = tabs;
 		getView();
 		for (int i = 0; i < tabs.size(); i++) {
-			createTab(tabs.get(i), tabs.get(i).options.bottomTabOptions, tabs.get(i).options.bottomTabsOptions);
+			createTab(i, tabs.get(i), tabs.get(i).options.bottomTabOptions, tabs.get(i).options.bottomTabsOptions);
 		}
 		selectTabAtIndex(0);
 	}
 
-	private void createTab(ViewController tab, final BottomTabOptions tabOptions, final BottomTabsOptions bottomTabsOptions) {
+	private void createTab(int index, ViewController tab, final BottomTabOptions tabOptions, final BottomTabsOptions bottomTabsOptions) {
 	    if (!tabOptions.icon.hasValue()) {
             throw new RuntimeException("BottomTab must have an icon");
         }
                 setIconColor(drawable, bottomTabsOptions);
                 AHBottomNavigationItem item = new AHBottomNavigationItem(tabOptions.title.get(""), drawable);
                 bottomTabs.addItem(item);
+                bottomTabs.post(() -> bottomTabs.setTabTag(index, tabOptions.testId));
             }
 
             @Override

lib/android/app/src/main/java/com/reactnativenavigation/views/BottomTabs.java

     private void setTestId(Text testId) {
         if (testId.hasValue()) setTag(testId.get());
     }
+
+    public void setTabTag(int index, Text testId) {
+        if (!testId.hasValue()) return;
+        if (testId.hasValue()) getViewAtPosition(index).setTag(testId.get());
+        if (testId.hasValue()) getViewAtPosition(index).setContentDescription(testId.get());
+    }
 }