Add some simple tests for the NavigationBarColorController

Adds integration tests to check the navigation bar color on OMR1.

BUG=818210

Change-Id: I3f5f56eccb8795022cf3a3765efa8e3c55bdcba5
Reviewed-on: https://chromium-review.googlesource.com/1125274
Commit-Queue: Theresa <twellington@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Cr-Commit-Position: refs/heads/master@{#572388}

chrome/android/java_sources.gni

@@ -1625,6 +1625,7 @@ chrome_test_java_sources = [
   "javatests/src/org/chromium/chrome/browser/ModalDialogTest.java",
   "javatests/src/org/chromium/chrome/browser/NavigateTest.java",
   "javatests/src/org/chromium/chrome/browser/FeaturesAnnotationsTest.java",
+  "javatests/src/org/chromium/chrome/browser/NavigationBarColorControllerTest.java",
   "javatests/src/org/chromium/chrome/browser/NavigationPopupTest.java",
   "javatests/src/org/chromium/chrome/browser/OSKOverscrollTest.java",
   "javatests/src/org/chromium/chrome/browser/PopularUrlsTest.java",

chrome/android/javatests/src/org/chromium/chrome/browser/NavigationBarColorControllerTest.java

+// Copyright 2018 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;
+
+import static org.junit.Assert.assertEquals;
+
+import android.annotation.TargetApi;
+import android.graphics.Color;
+import android.os.Build;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SmallTest;
+import android.view.Window;
+
+import org.junit.Before;
+import org.junit.Rule;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import org.chromium.base.ApiCompatibilityUtils;
+import org.chromium.base.ThreadUtils;
+import org.chromium.base.test.params.ParameterAnnotations;
+import org.chromium.base.test.params.ParameterProvider;
+import org.chromium.base.test.params.ParameterSet;
+import org.chromium.base.test.params.ParameterizedRunner;
+import org.chromium.base.test.util.CommandLineFlags;
+import org.chromium.base.test.util.MinAndroidSdkLevel;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.ntp.NewTabPageTest.ModernParams;
+import org.chromium.chrome.test.ChromeJUnit4RunnerDelegate;
+import org.chromium.chrome.test.ChromeTabbedActivityTestRule;
+import org.chromium.chrome.test.util.ChromeTabUtils;
+import org.chromium.chrome.test.util.browser.ChromeModernDesign;
+
+import java.util.Arrays;
+
+/** Tests for the NavigationBarColorController.  */
+@RunWith(ParameterizedRunner.class)
+@ParameterAnnotations.UseRunnerDelegate(ChromeJUnit4RunnerDelegate.class)
+@CommandLineFlags.Add({ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE})
+@MinAndroidSdkLevel(Build.VERSION_CODES.O_MR1)
+@TargetApi(Build.VERSION_CODES.O_MR1)
+public class NavigationBarColorControllerTest {
+    @Rule
+    public ChromeTabbedActivityTestRule mActivityTestRule = new ChromeTabbedActivityTestRule();
+
+    /** Parameter provider for enabling/disabling Chrome Modern. */
+    public static class ModernParams implements ParameterProvider {
+        @Override
+        public Iterable<ParameterSet> getParameters() {
+            return Arrays.asList(new ParameterSet().value(false).name("DisableChromeModern"),
+                    new ParameterSet().value(true).name("EnableChromeModern"));
+        }
+    }
+
+    private ChromeModernDesign.Processor mChromeModernProcessor =
+            new ChromeModernDesign.Processor();
+
+    private Window mWindow;
+    private int mLightNavigationColor;
+    private int mDarkNavigationColor;
+
+    @ParameterAnnotations.UseMethodParameterBefore(ModernParams.class)
+    public void setupModernDesign(boolean enabled) {
+        mChromeModernProcessor.setPrefs(enabled);
+    }
+
+    @ParameterAnnotations.UseMethodParameterAfter(ModernParams.class)
+    public void teardownModernDesign(boolean enabled) {
+        mChromeModernProcessor.clearTestState();
+    }
+
+    @Before
+    public void setUp() throws InterruptedException {
+        mActivityTestRule.startMainActivityOnBlankPage();
+        mWindow = mActivityTestRule.getActivity().getWindow();
+        mLightNavigationColor = ApiCompatibilityUtils.getColor(
+                mActivityTestRule.getActivity().getResources(), R.color.bottom_system_nav_color);
+        mDarkNavigationColor = Color.BLACK;
+    }
+
+    @Test
+    @SmallTest
+    @ParameterAnnotations.UseMethodParameter(ModernParams.class)
+    public void testToggleOverview(boolean modern) {
+        assertEquals("Navigation bar should be white before entering overview mode.",
+                mLightNavigationColor, mWindow.getNavigationBarColor());
+
+        ThreadUtils.runOnUiThreadBlocking(
+                () -> mActivityTestRule.getActivity().getLayoutManager().showOverview(false));
+
+        if (modern) {
+            assertEquals("Navigation bar should be white in overview mode.", mLightNavigationColor,
+                    mWindow.getNavigationBarColor());
+        } else {
+            assertEquals("Navigation bar should be black in overview mode.", mDarkNavigationColor,
+                    mWindow.getNavigationBarColor());
+        }
+
+        ThreadUtils.runOnUiThreadBlocking(
+                () -> mActivityTestRule.getActivity().getLayoutManager().hideOverview(false));
+
+        assertEquals("Navigation bar should be white after exiting overview mode.",
+                mLightNavigationColor, mWindow.getNavigationBarColor());
+    }
+
+    @Test
+    @SmallTest
+    public void testToggleIncognito() throws InterruptedException {
+        assertEquals("Navigation bar should be white on normal tabs.", mLightNavigationColor,
+                mWindow.getNavigationBarColor());
+
+        ChromeTabUtils.newTabFromMenu(InstrumentationRegistry.getInstrumentation(),
+                mActivityTestRule.getActivity(), true, true);
+
+        assertEquals("Navigation bar should be black on incognito tabs.", mDarkNavigationColor,
+                mWindow.getNavigationBarColor());
+
+        ChromeTabUtils.newTabFromMenu(InstrumentationRegistry.getInstrumentation(),
+                mActivityTestRule.getActivity(), false, true);
+
+        assertEquals("Navigation bar should be white after switching back to normal tab.",
+                mLightNavigationColor, mWindow.getNavigationBarColor());
+    }
+}