1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
5 package org.chromium.content.browser;
7 import android.content.Context;
8 import android.test.suitebuilder.annotation.MediumTest;
9 import android.util.DisplayMetrics;
10 import android.view.Display;
11 import android.view.WindowManager;
13 import org.chromium.base.test.util.DisabledTest;
14 import org.chromium.base.test.util.Feature;
15 import org.chromium.content.browser.test.util.JavaScriptUtils;
16 import org.chromium.content.browser.test.util.TestCallbackHelperContainer;
19 * Test suite for viewport-related properties.
21 public class ViewportTest extends ContentViewTestBase {
23 private TestCallbackHelperContainer mCallbackHelper;
26 * Returns the TestCallbackHelperContainer associated with this ContentView,
27 * or creates it lazily.
29 protected TestCallbackHelperContainer getTestCallbackHelperContainer() {
30 if (mCallbackHelper == null) {
31 mCallbackHelper = new TestCallbackHelperContainer(getContentView());
33 return mCallbackHelper;
36 protected String evaluateStringValue(String expression) throws Throwable {
37 return JavaScriptUtils.executeJavaScriptAndWaitForResult(getContentView(),
38 getTestCallbackHelperContainer(), expression);
41 protected float evaluateFloatValue(String expression) throws Throwable {
42 return Float.valueOf(evaluateStringValue(expression));
45 protected int evaluateIntegerValue(String expression) throws Throwable {
46 return Integer.valueOf(evaluateStringValue(expression));
51 @Feature({"Viewport", "InitialViewportSize"})
52 https://bugs.webkit.org/show_bug.cgi?id=107424
55 public void testDefaultViewportSize() throws Throwable {
56 launchContentShellWithUrl("about:blank");
57 waitForActiveShellToBeDoneLoading();
59 Context context = getInstrumentation().getTargetContext();
60 WindowManager winManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
61 DisplayMetrics metrics = new DisplayMetrics();
62 winManager.getDefaultDisplay().getMetrics(metrics);
64 // window.devicePixelRatio should match the default display. Only check to 1 decimal place
65 // to allow for rounding.
66 assertEquals(String.format("%.1g", metrics.density),
67 String.format("%.1g", evaluateFloatValue("window.devicePixelRatio")));
69 // Check that the viewport width is vaguely sensible.
70 int viewportWidth = evaluateIntegerValue("document.documentElement.clientWidth");
71 assertTrue(Math.abs(evaluateIntegerValue("window.innerWidth") - viewportWidth) <= 1);
72 assertTrue(viewportWidth >= 979);
73 assertTrue(viewportWidth <= Math.max(981, metrics.widthPixels / metrics.density + 1));