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| 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. |
| 4 |
| 5 package org.chromium.content.browser; |
| 6 |
| 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; |
| 12 |
| 13 import org.chromium.base.test.util.Feature; |
| 14 import org.chromium.content.browser.test.util.JavaScriptUtils; |
| 15 import org.chromium.content.browser.test.util.TestCallbackHelperContainer; |
| 16 import org.chromium.content.common.DeviceInfo; |
| 17 |
| 18 /** |
| 19 * Test suite for viewport-related properties. |
| 20 */ |
| 21 public class ViewportTest extends ContentViewTestBase { |
| 22 |
| 23 private TestCallbackHelperContainer mCallbackHelper; |
| 24 |
| 25 /** |
| 26 * Returns the TestCallbackHelperContainer associated with this ContentView, |
| 27 * or creates it lazily. |
| 28 */ |
| 29 protected TestCallbackHelperContainer getTestCallbackHelperContainer() { |
| 30 if (mCallbackHelper == null) { |
| 31 mCallbackHelper = new TestCallbackHelperContainer(getContentView()); |
| 32 } |
| 33 return mCallbackHelper; |
| 34 } |
| 35 |
| 36 protected String evaluateStringValue(String expression) throws Throwable { |
| 37 return JavaScriptUtils.executeJavaScriptAndWaitForResult(this, getConten
tView(), |
| 38 getTestCallbackHelperContainer(), expression); |
| 39 } |
| 40 |
| 41 protected float evaluateFloatValue(String expression) throws Throwable { |
| 42 return Float.valueOf(evaluateStringValue(expression)); |
| 43 } |
| 44 |
| 45 protected int evaluateIntegerValue(String expression) throws Throwable { |
| 46 return Integer.valueOf(evaluateStringValue(expression)); |
| 47 } |
| 48 |
| 49 @MediumTest |
| 50 @Feature({"Viewport", "InitialViewportSize"}) |
| 51 public void testDefaultViewportSize() throws Throwable { |
| 52 launchContentShellWithUrl("about:blank"); |
| 53 waitForActiveShellToBeDoneLoading(); |
| 54 |
| 55 Context context = getInstrumentation().getTargetContext(); |
| 56 WindowManager winManager = (WindowManager) context.getSystemService(Cont
ext.WINDOW_SERVICE); |
| 57 DisplayMetrics metrics = new DisplayMetrics(); |
| 58 winManager.getDefaultDisplay().getMetrics(metrics); |
| 59 |
| 60 // window.devicePixelRatio should match the default display. Only check
to 1 decimal place |
| 61 // to allow for rounding. |
| 62 assertEquals(String.format("%.1g", metrics.density), |
| 63 String.format("%.1g", evaluateFloatValue("window.devicePixelRati
o"))); |
| 64 |
| 65 // Check that the viewport width is vaguely sensible. |
| 66 int viewportWidth = evaluateIntegerValue("document.documentElement.clien
tWidth"); |
| 67 assertTrue(Math.abs(evaluateIntegerValue("window.innerWidth") - viewport
Width) <= 1); |
| 68 assertTrue(viewportWidth >= 979); |
| 69 assertTrue(viewportWidth <= Math.max(981, metrics.widthPixels / metrics.
density + 1)); |
| 70 } |
| 71 } |
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