[fenix] For https://github.com/mozilla-mobile/fenix/issues/19988 - Part 2: Load tab icon from BrowserIcons cache if needed for the recent tab

Co-authored-by: Jonathan Almeida <jalmeida@mozilla.com>

app/src/main/java/org/mozilla/fenix/home/recenttabs/view/RecentTabViewHolder.kt

@@ -6,8 +6,11 @@ package org.mozilla.fenix.home.recenttabs.view
 
 import android.view.View
 import kotlinx.android.synthetic.main.recent_tabs_list_row.*
+import mozilla.components.browser.icons.BrowserIcons
 import mozilla.components.browser.state.state.TabSessionState
 import org.mozilla.fenix.R
+import org.mozilla.fenix.ext.components
+import org.mozilla.fenix.ext.loadIntoView
 import org.mozilla.fenix.home.recenttabs.interactor.RecentTabInteractor
 import org.mozilla.fenix.utils.view.ViewHolder
 
@@ -15,15 +18,22 @@ import org.mozilla.fenix.utils.view.ViewHolder
  * View holder for a recent tab item.
  *
  * @param interactor [RecentTabInteractor] which will have delegated to all user interactions.
+ * @param icons
  */
 class RecentTabViewHolder(
     view: View,
-    private val interactor: RecentTabInteractor
+    private val interactor: RecentTabInteractor,
+    private val icons: BrowserIcons = view.context.components.core.icons
 ) : ViewHolder(view) {
 
     fun bindTab(tab: TabSessionState) {
         recent_tab_title.text = tab.content.title
-        recent_tab_icon.setImageBitmap(tab.content.icon)
+
+        if (tab.content.icon != null) {
+            recent_tab_icon.setImageBitmap(tab.content.icon)
+        } else {
+            icons.loadIntoView(recent_tab_icon, tab.content.url)
+        }
 
         itemView.setOnClickListener {
             interactor.onRecentTabClicked(tab.id)

app/src/test/java/org/mozilla/fenix/home/recenttabs/view/RecentTabViewHolderTest.kt

@@ -6,9 +6,13 @@ package org.mozilla.fenix.home.recenttabs.view
 
 import android.view.LayoutInflater
 import android.view.View
+import io.mockk.every
 import io.mockk.mockk
 import io.mockk.verify
+import kotlinx.android.synthetic.main.recent_tabs_list_row.*
 import kotlinx.android.synthetic.main.recent_tabs_list_row.view.*
+import mozilla.components.browser.icons.BrowserIcons
+import mozilla.components.browser.icons.IconRequest
 import mozilla.components.browser.state.state.createTab
 import mozilla.components.support.test.robolectric.testContext
 import org.junit.Assert.assertEquals
@@ -23,6 +27,7 @@ class RecentTabViewHolderTest {
 
     private lateinit var view: View
     private lateinit var interactor: SessionControlInteractor
+    private lateinit var icons: BrowserIcons
 
     private val tab = createTab(
         url = "https://mozilla.org",
@@ -33,18 +38,23 @@ class RecentTabViewHolderTest {
     fun setup() {
         view = LayoutInflater.from(testContext).inflate(RecentTabViewHolder.LAYOUT_ID, null)
         interactor = mockk(relaxed = true)
+        icons = mockk(relaxed = true)
+
+        every { icons.loadIntoView(view.recent_tab_icon, any()) } returns mockk()
     }
 
     @Test
-    fun `GIVEN a new recent tab on bind THEN set the title text`() {
+    fun `GIVEN a new recent tab on bind THEN set the title text and load the tab icon`() {
-        RecentTabViewHolder(view, interactor).bindTab(tab)
+        RecentTabViewHolder(view, interactor, icons).bindTab(tab)
 
         assertEquals(tab.content.title, view.recent_tab_title.text)
+
+        verify { icons.loadIntoView(view.recent_tab_icon, IconRequest(tab.content.url)) }
     }
 
     @Test
-    fun `WHEN a recent tab item is clicked THEN interactor iis called`() {
+    fun `WHEN a recent tab item is clicked THEN interactor is called`() {
-        RecentTabViewHolder(view, interactor).bindTab(tab)
+        RecentTabViewHolder(view, interactor, icons).bindTab(tab)
 
         view.performClick()