📰 Add tests for context menu usage

chrome/android/javatests/src/org/chromium/chrome/browser/suggestions/TileGroupTest.java

+// Copyright 2017 The Chromium 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 org.chromium.chrome.browser.suggestions;
+
+import android.support.test.filters.MediumTest;
+import android.view.View;
+import android.view.ViewGroup;
+
+import org.chromium.base.ThreadUtils;
+import org.chromium.base.test.util.Feature;
+import org.chromium.base.test.util.RetryOnFailure;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ChromeActivity;
+import org.chromium.chrome.browser.UrlConstants;
+import org.chromium.chrome.browser.ntp.ContextMenuManager;
+import org.chromium.chrome.browser.ntp.NewTabPage;
+import org.chromium.chrome.browser.ntp.cards.NewTabPageRecyclerView;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.test.ChromeTabbedActivityTestBase;
+import org.chromium.chrome.test.util.NewTabPageTestUtils;
+import org.chromium.chrome.test.util.browser.RecyclerViewTestUtils;
+import org.chromium.chrome.test.util.browser.suggestions.FakeSuggestionsSource;
+import org.chromium.content.browser.test.util.Criteria;
+import org.chromium.content.browser.test.util.CriteriaHelper;
+import org.chromium.content.browser.test.util.TestTouchUtils;
+import org.chromium.net.test.EmbeddedTestServer;
+
+import java.util.concurrent.TimeoutException;
+
+/**
+ * Instrumentation tests for {@link TileGroup} on the New Tab Page.

[Michael van Ouwerkerk, 2017/03/20 11:10:18]

Is this actually a test for TileGridLayout? It seems that is also covered, and
TileGroup is implied then.

[dgn, 2017/03/20 16:06:45]

TileGridLayout is mentioned just because that is how I can get to the views, but
all the behavour is in TileGroup. The tests just use it as a ViewGroup or purely
to get the TileView from URLs.

+ */
+@RetryOnFailure
+public class TileGroupTest extends ChromeTabbedActivityTestBase {
+    private static final String[] FAKE_MOST_VISITED_URLS =
+            new String[] {"/chrome/test/data/android/navigate/one.html",
+                    "/chrome/test/data/android/navigate/two.html",
+                    "/chrome/test/data/android/navigate/three.html"};
+
+    private NewTabPage mNtp;
+    private String[] mSiteSuggestionUrls;
+    private FakeMostVisitedSites mMostVisitedSites;
+    private EmbeddedTestServer mTestServer;
+
+    @Override
+    protected void setUp() throws Exception {
+        mTestServer = EmbeddedTestServer.createAndStartServer(getInstrumentation().getContext());
+
+        mSiteSuggestionUrls = new String[] {mTestServer.getURL(FAKE_MOST_VISITED_URLS[0]),
+                mTestServer.getURL(FAKE_MOST_VISITED_URLS[1]),
+                mTestServer.getURL(FAKE_MOST_VISITED_URLS[2])};
+
+        FakeSuggestionsSource mSource = new FakeSuggestionsSource();
+        NewTabPage.setSuggestionsSourceForTests(mSource);
+
+        super.setUp();
+    }
+
+    @Override
+    protected void tearDown() throws Exception {
+        TileGroupDelegateImpl.setMostVisitedSitesForTests(null);
+        NewTabPage.setSuggestionsSourceForTests(null);
+        mTestServer.stopAndDestroyServer();
+
+        super.tearDown();
+    }
+
+    @Override
+    public void startMainActivity() throws InterruptedException {
+        startMainActivityOnBlankPage();
+        Tab mTab = getActivity().getActivityTab();
+
+        mMostVisitedSites = new FakeMostVisitedSites();

[Michael van Ouwerkerk, 2017/03/20 11:10:19]

Can this block be in setUp?

[dgn, 2017/03/20 16:06:45]

Done.

+        mMostVisitedSites.setTileSuggestions(mSiteSuggestionUrls);
+        TileGroupDelegateImpl.setMostVisitedSitesForTests(mMostVisitedSites);
+
+        loadUrl(UrlConstants.NTP_URL);
+        NewTabPageTestUtils.waitForNtpLoaded(mTab);
+
+        assertTrue(mTab.getNativePage() instanceof NewTabPage);
+        mNtp = (NewTabPage) mTab.getNativePage();
+
+        RecyclerViewTestUtils.waitForStableRecyclerView(getRecyclerView());
+    }
+
+    @MediumTest
+    @Feature({"NewTabPage"})
+    public void testDismissTileWithContextMenu() throws InterruptedException, TimeoutException {
+        final View tileView = getTileViewForUrl(mSiteSuggestionUrls[0]);
+
+        // Dismiss the tile using the context menu.
+        invokeContextMenu(tileView, ContextMenuManager.ID_REMOVE);
+        assertTrue(mMostVisitedSites.isUrlBlacklisted(mSiteSuggestionUrls[0]));
+
+        // Ensure that the removal update goes through.
+        mMostVisitedSites.setTileSuggestions(mSiteSuggestionUrls[1], mSiteSuggestionUrls[2]);
+        waitForViewDetached(tileView);
+        waitForChildCountChanged(getTileGridLayout(), 2);

[Michael van Ouwerkerk, 2017/03/20 11:10:19]

Please assert earlier in the test that it has 3 children.

[dgn, 2017/03/20 16:06:44]

Done.

+    }
+
+    @MediumTest
+    @Feature({"NewTabPage"})
+    public void testDismissTileUndo() throws InterruptedException, TimeoutException {
+        final TileGridLayout tileGridLayout = getTileGridLayout();
+        final View tileView = getTileViewForUrl(mSiteSuggestionUrls[0]);
+        assertEquals(mSiteSuggestionUrls.length, tileGridLayout.getChildCount());
+
+        // Dismiss the tile using the context menu.
+        invokeContextMenu(tileView, ContextMenuManager.ID_REMOVE);
+
+        // Ensure that the removal update goes through.
+        mMostVisitedSites.setTileSuggestions(mSiteSuggestionUrls[1], mSiteSuggestionUrls[2]);
+        waitForChildCountChanged(tileGridLayout, 2);
+        waitForSnackbar(getActivity());
+
+        assertTrue(mMostVisitedSites.isUrlBlacklisted(mSiteSuggestionUrls[0]));
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                getActivity().getSnackbarManager().onClick(null);
+            }
+        });
+
+        assertFalse(mMostVisitedSites.isUrlBlacklisted(mSiteSuggestionUrls[0]));
+
+        // Ensure that the removal of the update goes through.

[Michael van Ouwerkerk, 2017/03/20 11:10:18]

"Ensure that undoing the removal is reflected in the ui."

[dgn, 2017/03/20 16:06:44]

Done.

+        mMostVisitedSites.setTileSuggestions(mSiteSuggestionUrls);
+        waitForChildCountChanged(tileGridLayout, mSiteSuggestionUrls.length);
+    }
+
+    private NewTabPageRecyclerView getRecyclerView() {
+        return mNtp.getNewTabPageView().getRecyclerView();
+    }
+
+    private TileGridLayout getTileGridLayout() {
+        ViewGroup aboveTheFoldView = getRecyclerView().getAboveTheFoldView();
+        assertNotNull("Unable to retrieve the AboveTheFold view.", aboveTheFoldView);
+
+        TileGridLayout tileGridLayout =
+                (TileGridLayout) aboveTheFoldView.findViewById(R.id.tile_grid_layout);
+        assertNotNull("Unable to retrieve the TileGridLayout.", tileGridLayout);
+        return tileGridLayout;
+    }
+
+    private View getTileViewForUrl(String url) {
+        View tileView = getTileGridLayout().getTileView(url);
+        assertNotNull("Tile not found for url " + url, tileView);
+
+        return tileView;
+    }
+
+    private void invokeContextMenu(View view, int contextMenuItemId) {
+        TestTouchUtils.longClickView(getInstrumentation(), view);
+        assertTrue(
+                getInstrumentation().invokeContextMenuAction(getActivity(), contextMenuItemId, 0));
+    }
+
+    private static void waitForSnackbar(final ChromeActivity activity) {

[Michael van Ouwerkerk, 2017/03/20 11:10:19]

Other instrumentation tests seems to rely on getCurrentSnackbarForTesting, not
sure whether that makes much of a difference, but it aligns with using
getActivity().getSnackbarManager().onClick.

[dgn, 2017/03/20 16:06:44]

As explained below, Snackbar is not super usable outside of its own package. Got
the view and clicked it explicitly instead, for consistency with existing tests.

+        CriteriaHelper.pollUiThread(new Criteria("The snackbar was not shown.") {
+            @Override
+            public boolean isSatisfied() {
+                return activity.findViewById(R.id.snackbar) != null;

[Michael van Ouwerkerk, 2017/03/20 11:10:19]

DataReductionPromoSnackbarControllerTest also confirms that it is the correct
snackbar by checking the text content.

[dgn, 2017/03/20 16:06:44]

That one has access to package private methods from Snackbar.
DownloadActivityTest also relies on finding views from the view hierarchy for
actions and verifications.

+            }
+        });
+    }
+
+    private static void waitForViewDetached(final View view) {

[Michael van Ouwerkerk, 2017/03/20 11:10:18]

This seems like a very generic method, is there a generic test helper we can
place it in?

[dgn, 2017/03/20 16:06:45]

Removed

+        CriteriaHelper.pollUiThread(new Criteria("The view did not detach.") {
+            @Override
+            public boolean isSatisfied() {
+                return view.getParent() == null;
+            }
+        });
+    }
+
+    private static void waitForChildCountChanged(final ViewGroup parent, final int expectedCount) {

[Michael van Ouwerkerk, 2017/03/20 11:10:19]

nit: rename to waitForChildCount, it's shorter. And, as we're polling for state,
there's no requirement for this to actually be a change :-/ it might just be the
current state. If you wanted to avoid polling (might not be what you want!) then
ViewGroup.OnHierarchyChangeListener seems like the thing.

[Michael van Ouwerkerk, 2017/03/20 11:10:19]

This might also be fine in a generic test util.

[dgn, 2017/03/20 16:06:44]

Done.

[dgn, 2017/03/20 16:06:44]

Removed the polling, but because for the case of the insertion I don't have a
good generic way to check that the new item is what I expect. And for
consistency I did that for removals too.

+        CriteriaHelper.pollUiThread(new Criteria("The child count did not change.") {
+            @Override
+            public boolean isSatisfied() {
+                return parent.getChildCount() == expectedCount;
+            }
+        });
+    }
+}