[Downloads UI] Implement search

chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadActivityTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadActivityTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadActivityTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadActivityTest.java
index db7d9fba25d141733bb847c8ddfe5378034ab629..c094180824da6f46c44c95d1fe5545c49dbaac2e 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadActivityTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/download/DownloadActivityTest.java
@@ -25,6 +25,7 @@ import org.chromium.chrome.browser.download.ui.DownloadHistoryAdapter;
 import org.chromium.chrome.browser.download.ui.DownloadHistoryItemViewHolder;
 import org.chromium.chrome.browser.download.ui.DownloadHistoryItemWrapper;
 import org.chromium.chrome.browser.download.ui.DownloadItemView;
+import org.chromium.chrome.browser.download.ui.DownloadManagerToolbar;
 import org.chromium.chrome.browser.download.ui.DownloadManagerUi;
 import org.chromium.chrome.browser.download.ui.SpaceDisplay;
 import org.chromium.chrome.browser.download.ui.StubbedProvider;
@@ -538,6 +539,48 @@ public class DownloadActivityTest extends BaseActivityInstrumentationTestCase<Do
         assertFalse(mStubbedProvider.getSelectionDelegate().isSelectionEnabled());
     }
 
+    @MediumTest
+    public void testSearchView() throws Exception {
+        final DownloadManagerToolbar toolbar = mUi.getDownloadManagerToolbarForTests();
+        View toolbarSearchView = toolbar.getSearchViewForTests();
+        assertEquals(View.GONE, toolbarSearchView.getVisibility());
+
+        toggleItemSelection(2);
+        assertTrue(mStubbedProvider.getSelectionDelegate().isSelectionEnabled());
+
+        int callCount = mAdapterObserver.onSelectionCallback.getCallCount();
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                toolbar.getMenu().performIdentifierAction(R.id.search_menu_id, 0);
+            }
+        });
+
+        // The selection should be cleared when a search is started.
+        mAdapterObserver.onSelectionCallback.waitForCallback(callCount, 1);
+        assertFalse(mStubbedProvider.getSelectionDelegate().isSelectionEnabled());
+        assertEquals(View.VISIBLE, toolbarSearchView.getVisibility());
+
+        // Select an item and assert that the search view is no longer showing.
+        toggleItemSelection(2);
+        assertTrue(mStubbedProvider.getSelectionDelegate().isSelectionEnabled());
+        assertEquals(View.GONE, toolbarSearchView.getVisibility());
+
+        // Clear the selection and assert that the search view is showing again.
+        toggleItemSelection(2);
+        assertFalse(mStubbedProvider.getSelectionDelegate().isSelectionEnabled());
+        assertEquals(View.VISIBLE, toolbarSearchView.getVisibility());
+
+        // Close the search view.
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                toolbar.onNavigationBack();
+            }
+        });
+        assertEquals(View.GONE, toolbarSearchView.getVisibility());
+    }
+
     private DownloadActivity startDownloadActivity() throws Exception {
         // Load up the downloads lists.
         DownloadItem item0 = StubbedProvider.createDownloadItem(0, "19551112 06:38");