Add button text color unit test

lib/android/app/src/main/java/com/reactnativenavigation/utils/ButtonOptionsPresenter.java

         });
     }
 
-    private void setDisabledColor(TextView btn, int color) {
+    public void setDisabledColor(TextView btn, int color) {
         btn.setTextColor(color);
     }
 
-    private void setEnabledColor(TextView btn) {
+    public void setEnabledColor(TextView btn) {
         btn.setTextColor(button.color.get());
     }
 

lib/android/app/src/test/java/com/reactnativenavigation/BaseTest.java

             controller.options.animations.push.enable = new Bool(false);
         }
     }
+
+    protected void dispatchPreDraw(View view) {
+        view.getViewTreeObserver().dispatchOnPreDraw();
+    }
 }

lib/android/app/src/test/java/com/reactnativenavigation/utils/UiUtilsTest.java

 
 public class UiUtilsTest extends BaseTest {
     @Test
-    public void runOnPreDrawOnce() throws Exception {
+    public void runOnPreDrawOnce() {
         View view = new View(newActivity());
         Runnable task = mock(Runnable.class);
         verifyZeroInteractions(task);
 
         UiUtils.runOnPreDrawOnce(view, task);
-        view.getViewTreeObserver().dispatchOnPreDraw();
+        dispatchPreDraw(view);
         verify(task, times(1)).run();
     }
 }

lib/android/app/src/test/java/com/reactnativenavigation/viewcontrollers/TopBarButtonControllerTest.java

 
 import static org.assertj.core.api.Java6Assertions.assertThat;
 import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.anyInt;
 import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.times;
         setIconButton(false);
         button.disableIconTint = new Bool(true);
         uut.addToMenu(getTitleBar(), 0);
-        verify(optionsPresenter, times(0)).setTextColor();
+        verify(optionsPresenter, times(0)).tint(any(), anyInt());
     }
 
     @Test
         uut.addToMenu(getTitleBar(), 0);
         verify(optionsPresenter, times(0)).setFontSize(getTitleBar().getMenu().getItem(0));
 
-        getTitleBar().getMenu().clear();
+        clearMenu();
         button.fontSize = new Number(10);
         uut.addToMenu(getTitleBar(), 0);
         verify(optionsPresenter, times(1)).setFontSize(getTitleBar().getMenu().getItem(0));
     }
 
+    @Test
+    public void textColor_enabled() {
+        setTextButton();
+        button.enabled = new Bool(false);
+        uut.addToMenu(getTitleBar(), 0);
+        dispatchPreDraw(getTitleBar());
+        verify(optionsPresenter, times(0)).setEnabledColor(any());
+
+        clearMenu();
+        button.enabled = new Bool(true);
+        button.color = new Color(android.graphics.Color.RED);
+        uut.addToMenu(getTitleBar(), 0);
+        dispatchPreDraw(getTitleBar());
+        verify(optionsPresenter, times(1)).setEnabledColor(any());
+    }
+
+    private void clearMenu() {
+        getTitleBar().getMenu().clear();
+    }
+
+    @Test
+    public void textColor_disabled() {
+        setTextButton();
+        button.enabled = new Bool(false);
+        uut.addToMenu(getTitleBar(), 0);
+        dispatchPreDraw(getTitleBar());
+        verify(optionsPresenter, times(1)).setDisabledColor(any(), eq(android.graphics.Color.LTGRAY));
+
+        clearMenu();
+        button.disabledColor = new Color(android.graphics.Color.BLACK);
+        uut.addToMenu(getTitleBar(), 0);
+        dispatchPreDraw(getTitleBar());
+        verify(optionsPresenter, times(1)).setDisabledColor(any(), eq(android.graphics.Color.BLACK));
+    }
+
     private Toolbar getTitleBar() {
         return stackController.getTopBar().getTitleBar();
     }
 
     private void setTextButton() {
         button.id = "btn1";
-        button.color = new Color(android.graphics.Color.RED);
         button.title = new Text("Button");
         button.fontFamily = Typeface.MONOSPACE;
         button.showAsAction = MenuItem.SHOW_AS_ACTION_ALWAYS;