Bug 1888443 - Test that EngineView's parent does not propagate requestDisallowInterceptTouchEvent. r=android-reviewers,tthibaud

Differential Revision: https://phabricator.services.mozilla.com/D206111

mobile/android/focus-android/app/src/test/java/org/mozilla/focus/BrowserFragmentTest.kt

@@ -0,0 +1,108 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+package org.mozilla.focus
+
+import android.content.Context
+import android.graphics.Bitmap
+import android.util.AttributeSet
+import android.view.LayoutInflater
+import android.view.View
+import mozilla.components.concept.engine.EngineSession
+import mozilla.components.concept.engine.EngineView
+import mozilla.components.concept.engine.selection.SelectionActionDelegate
+import mozilla.components.support.test.robolectric.testContext
+import org.junit.Assert.assertNotNull
+import org.junit.Test
+import org.junit.runner.RunWith
+import org.mockito.Mockito.spy
+import org.mockito.Mockito.verify
+import org.mockito.Mockito.verifyNoMoreInteractions
+import org.mozilla.focus.databinding.FragmentBrowserBinding
+import org.mozilla.focus.widget.ResizableKeyboardCoordinatorLayout
+import org.robolectric.RobolectricTestRunner
+
+@RunWith(RobolectricTestRunner::class)
+class BrowserFragmentTest {
+    @Test
+    fun testEngineViewInflationAndParentInteraction() {
+        val layoutInflater = LayoutInflater.from(testContext)
+
+        // Intercept the inflation process
+        layoutInflater.factory2 = object : LayoutInflater.Factory2 {
+            override fun onCreateView(
+                parent: View?,
+                name: String,
+                context: Context,
+                attrs: AttributeSet,
+            ): View? {
+                // Inflate a DummyEngineView when trying to inflate an EngineView
+                if (name == EngineView::class.java.name) {
+                    return DummyEngineView(testContext)
+                }
+
+                // For other types of views, let the system handle it
+                return null
+            }
+
+            override fun onCreateView(name: String, context: Context, attrs: AttributeSet): View? {
+                return onCreateView(null, name, context, attrs)
+            }
+        }
+
+        val binding = FragmentBrowserBinding.inflate(LayoutInflater.from(testContext))
+        val engineView: EngineView = binding.engineView
+
+        assertNotNull(engineView)
+
+        // Get the layout parent of the EngineView
+        val engineViewParent = spy(
+            (engineView as View).parent as ResizableKeyboardCoordinatorLayout,
+        )
+
+        assertNotNull(engineViewParent)
+
+        engineViewParent.requestDisallowInterceptTouchEvent(true)
+
+        // Verify that the EngineView's parent does not propagate requestDisallowInterceptTouchEvent
+        verify(engineViewParent).requestDisallowInterceptTouchEvent(true)
+        // If propagated, an additional ViewGroup.requestDisallowInterceptTouchEvent would have been registered.
+        verifyNoMoreInteractions(engineViewParent)
+    }
+}
+
+/**
+ * Dummy implementation of the EngineView interface.
+ */
+class DummyEngineView(context: Context) : View(context), EngineView {
+    init {
+        id = R.id.engineView
+    }
+
+    override fun render(session: EngineSession) {
+        // no-op
+    }
+
+    override fun release() {
+        // no-op
+    }
+
+    override fun captureThumbnail(onFinish: (Bitmap?) -> Unit) {
+        // no-op
+    }
+
+    override fun setVerticalClipping(clippingHeight: Int) {
+        // no-op
+    }
+
+    override fun setDynamicToolbarMaxHeight(height: Int) {
+        // no-op
+    }
+
+    override fun setActivityContext(context: Context?) {
+        // no-op
+    }
+
+    override var selectionActionDelegate: SelectionActionDelegate? = null
+}