Add an Android test for the lookalike interstitial

This test sanity checks that we display a lookalike interstitial for a relevant domain name.
The test is adapted from chrome/browser/ssl/CaptivePortalTest.java.

Bug: 936565
Change-Id: Ic92be9630c15ec4d88043411a79edf0a07ed78ef
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1497767Reviewed-by: David Trainor <dtrainor@chromium.org>
Reviewed-by: Emily Stark <estark@chromium.org>
Commit-Queue: Mustafa Emre Acer <meacer@chromium.org>
Cr-Commit-Position: refs/heads/master@{#638241}

chrome/android/java/src/org/chromium/chrome/browser/ChromeFeatureList.java

@@ -244,6 +244,8 @@ public abstract class ChromeFeatureList {
     public static final String INTEREST_FEED_CONTENT_SUGGESTIONS = "InterestFeedContentSuggestions";
     public static final String JELLY_BEAN_SUPPORTED = "JellyBeanSupported";
     public static final String LANGUAGES_PREFERENCE = "LanguagesPreference";
+    public static final String LOOKALIKE_NAVIGATION_URL_SUGGESTIONS_UI =
+            "LookalikeUrlNavigationSuggestionsUI";
     public static final String SEARCH_ENGINE_PROMO_EXISTING_DEVICE =
             "SearchEnginePromo.ExistingDevice";
     public static final String SEARCH_ENGINE_PROMO_NEW_DEVICE = "SearchEnginePromo.NewDevice";

chrome/android/java_sources.gni

@@ -2071,6 +2071,7 @@ chrome_test_java_sources = [
   "javatests/src/org/chromium/chrome/browser/init/ChromeBrowserInitializerTest.java",
   "javatests/src/org/chromium/chrome/browser/input/SelectPopupOtherContentViewTest.java",
   "javatests/src/org/chromium/chrome/browser/instantapps/InstantAppsHandlerTest.java",
+  "javatests/src/org/chromium/chrome/browser/interstitials/LookalikeInterstitialTest.java",
   "javatests/src/org/chromium/chrome/browser/invalidation/ChromeBrowserSyncAdapterTest.java",
   "javatests/src/org/chromium/chrome/browser/invalidation/DelayedInvalidationsControllerTest.java",
   "javatests/src/org/chromium/chrome/browser/invalidation/InvalidationServiceTest.java",

chrome/android/javatests/src/org/chromium/chrome/browser/interstitials/LookalikeInterstitialTest.java

+// Copyright 2019 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.interstitials;
+
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.MediumTest;
+
+import org.junit.After;
+import org.junit.Assert;
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.chromium.base.test.util.CommandLineFlags;
+import org.chromium.base.test.util.parameter.CommandLineParameter;
+import org.chromium.chrome.browser.ChromeFeatureList;
+import org.chromium.chrome.browser.ChromeSwitches;
+import org.chromium.chrome.browser.tab.Tab;
+import org.chromium.chrome.test.ChromeJUnit4ClassRunner;
+import org.chromium.chrome.test.ChromeTabbedActivityTestRule;
+import org.chromium.chrome.test.util.ChromeTabUtils;
+import org.chromium.chrome.test.util.browser.TabTitleObserver;
+import org.chromium.content_public.common.ContentSwitches;
+import org.chromium.net.test.EmbeddedTestServer;
+
+/** Tests for the Lookalike URL interstitial (aka confusables). */
+@RunWith(ChromeJUnit4ClassRunner.class)
+@MediumTest
+@CommandLineFlags.Add({ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE,
+        ContentSwitches.HOST_RESOLVER_RULES + "=MAP * 127.0.0.1"})
+@CommandLineParameter(
+        {"", "enable-features=" + ChromeFeatureList.LOOKALIKE_NAVIGATION_URL_SUGGESTIONS_UI})
+public class LookalikeInterstitialTest {
+    private static final String INTERSTITIAL_TITLE_PREFIX = "Did you mean?";
+
+    private static final int INTERSTITIAL_TITLE_UPDATE_TIMEOUT_SECONDS = 5;
+
+    private EmbeddedTestServer mServer;
+
+    @Rule
+    public ChromeTabbedActivityTestRule mActivityTestRule = new ChromeTabbedActivityTestRule();
+
+    @Before
+    public void setUp() throws Exception {
+        mActivityTestRule.startMainActivityFromLauncher();
+        mServer = EmbeddedTestServer.createAndStartServer(InstrumentationRegistry.getContext());
+    }
+
+    @After
+    public void tearDown() throws Exception {
+        mServer.stopAndDestroyServer();
+    }
+
+    @Test
+    public void testBasicInterstitialShown() throws Exception {
+        Tab tab = mActivityTestRule.getActivity().getActivityTab();
+        ChromeTabUtils.loadUrlOnUiThread(tab,
+                mServer.getURLWithHostName("xn--googl-fsa.com", // googlé.com
+                        "/chrome/test/data/android/navigate/simple.html"));
+
+        // Wait for the interstitial page to commit and check the page title.
+        new TabTitleObserver(tab, INTERSTITIAL_TITLE_PREFIX)
+                .waitForTitleUpdate(INTERSTITIAL_TITLE_UPDATE_TIMEOUT_SECONDS);
+        Assert.assertEquals(0, tab.getTitle().indexOf(INTERSTITIAL_TITLE_PREFIX));
+    }
+}