AccessibilityEventsDelegateTest.java

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// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
 
package io.flutter.plugin.platform;
 
import static junit.framework.TestCase.assertFalse;
import static junit.framework.TestCase.assertTrue;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyBoolean;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.times;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
 
import android.view.MotionEvent;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import androidx.test.ext.junit.runners.AndroidJUnit4;
import io.flutter.view.AccessibilityBridge;
import org.junit.Test;
import org.junit.runner.RunWith;
 
@RunWith(AndroidJUnit4.class)
public class AccessibilityEventsDelegateTest {
  @Test
  public void acessibilityEventsDelegate_forwardsAccessibilityEvents() {
    final AccessibilityBridge mockAccessibilityBridge = mock(AccessibilityBridge.class);
    final View embeddedView = mock(View.class);
    final View originView = mock(View.class);
    final AccessibilityEvent event = mock(AccessibilityEvent.class);
 
    AccessibilityEventsDelegate delegate = new AccessibilityEventsDelegate();
    delegate.setAccessibilityBridge(mockAccessibilityBridge);
    when(mockAccessibilityBridge.externalViewRequestSendAccessibilityEvent(any(), any(), any()))
        .thenReturn(true);
 
    final boolean handled = delegate.requestSendAccessibilityEvent(embeddedView, originView, event);
 
    assertTrue(handled);
    verify(mockAccessibilityBridge, times(1))
        .externalViewRequestSendAccessibilityEvent(embeddedView, originView, event);
  }
 
  @Test
  public void acessibilityEventsDelegate_withoutBridge_noopsAccessibilityEvents() {
    final View embeddedView = mock(View.class);
    final View originView = mock(View.class);
    final AccessibilityEvent event = mock(AccessibilityEvent.class);
 
    AccessibilityEventsDelegate delegate = new AccessibilityEventsDelegate();
 
    final boolean handled = delegate.requestSendAccessibilityEvent(embeddedView, originView, event);
 
    assertFalse(handled);
  }
 
  @Test
  public void acessibilityEventsDelegate_forwardsHoverEvents() {
    final AccessibilityBridge mockAccessibilityBridge = mock(AccessibilityBridge.class);
    final MotionEvent event = mock(MotionEvent.class);
 
    AccessibilityEventsDelegate delegate = new AccessibilityEventsDelegate();
    delegate.setAccessibilityBridge(mockAccessibilityBridge);
    when(mockAccessibilityBridge.onAccessibilityHoverEvent(any(), anyBoolean())).thenReturn(true);
 
    final boolean handled = delegate.onAccessibilityHoverEvent(event, true);
 
    assertTrue(handled);
    verify(mockAccessibilityBridge, times(1)).onAccessibilityHoverEvent(event, true);
  }
 
  @Test
  public void acessibilityEventsDelegate_withoutBridge_noopsHoverEvents() {
    final MotionEvent event = mock(MotionEvent.class);
 
    AccessibilityEventsDelegate delegate = new AccessibilityEventsDelegate();
 
    final boolean handled = delegate.onAccessibilityHoverEvent(event, true);
 
    assertFalse(handled);
  }
}