[Android] Port simple ContentSettings tests to android_webview.

android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java

Index: android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java
new file mode 100644
index 0000000000000000000000000000000000000000..82f6daf2d20737a3b38f448ca4d454420e0ff93d
--- /dev/null
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AwSettingsTest.java
@@ -0,0 +1,704 @@
+// Copyright (c) 2012 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.android_webview.test;
+
+import android.content.Context;
+import android.test.suitebuilder.annotation.SmallTest;
+import android.test.suitebuilder.annotation.Smoke;
+
+import org.chromium.base.test.Feature;
+import org.chromium.base.test.UrlUtils;
+import org.chromium.android_webview.AwContents;
+import org.chromium.android_webview.AwContentsClient;
+import org.chromium.content.browser.ContentSettings;
+import org.chromium.content.browser.ContentViewCore;
+
+import java.util.concurrent.Callable;
+
+/**
+ * A test suite for ContentSettings class. The key objective is to verify that each
+ * settings applies either to each individual view or to all views of the
+ * application.
+ */
+public class AwSettingsTest extends AndroidWebViewTestBase {
+    private static final boolean ENABLED = true;
+    private static final boolean DISABLED = false;
+
+    /**
+     * A helper class for testing a particular preference from ContentSettings.
+     * The generic type T is the type of the setting. Usually, to test an
+     * effect of the preference, JS code is executed that sets document's title.
+     * In this case, requiresJsEnabled constructor argument must be set to true.
+     */
+    abstract class AwSettingsTestHelper<T> {
+        protected final ContentViewCore mContentViewCore;
+        protected final TestAwContentsClient mContentViewClient;
+        protected final ContentSettings mContentSettings;
+
+        AwSettingsTestHelper(ContentViewCore contentViewCore,
+                             TestAwContentsClient contentViewClient,
+                             boolean requiresJsEnabled) throws Throwable {
+            mContentViewCore = contentViewCore;
+            mContentViewClient = contentViewClient;
+            mContentSettings = getContentSettingsOnUiThread(mContentViewCore);
+            if (requiresJsEnabled) {
+                mContentSettings.setJavaScriptEnabled(true);
+            }
+        }
+
+        void ensureSettingHasAlteredValue() throws Throwable {
+            ensureSettingHasValue(getAlteredValue());
+        }
+
+        void ensureSettingHasInitialValue() throws Throwable {
+            ensureSettingHasValue(getInitialValue());
+        }
+
+        void setAlteredSettingValue() throws Throwable {
+            setCurrentValue(getAlteredValue());
+        }
+
+        void setInitialSettingValue() throws Throwable {
+            setCurrentValue(getInitialValue());
+        }
+
+        protected abstract T getAlteredValue();
+
+        protected abstract T getInitialValue();
+
+        protected abstract T getCurrentValue();
+
+        protected abstract void setCurrentValue(T value);
+
+        protected abstract void doEnsureSettingHasValue(T value) throws Throwable;
+
+        protected String getTitleOnUiThread() throws Throwable {
+            return AwSettingsTest.this.getTitleOnUiThread(mContentViewCore);
+        }
+
+        protected void loadDataSync(String data) throws Throwable {
+            AwSettingsTest.this.loadDataSync(
+                mContentViewCore,
+                mContentViewClient.getOnPageFinishedHelper(),
+                data,
+                "text/html",
+                false);
+        }
+
+        private void ensureSettingHasValue(T value) throws Throwable {
+            assertEquals(value, getCurrentValue());
+            doEnsureSettingHasValue(value);
+        }
+    }
+
+    class AwSettingsJavaScriptTestHelper extends AwSettingsTestHelper<Boolean> {
+        private static final String JS_ENABLED_STRING = "JS Enabled";
+        private static final String JS_DISABLED_STRING = "JS Disabled";
+
+        AwSettingsJavaScriptTestHelper(ContentViewCore contentViewCore,
+                                       TestAwContentsClient contentViewClient) throws Throwable {
+            super(contentViewCore, contentViewClient, false);
+        }
+
+        @Override
+        protected Boolean getAlteredValue() {
+            return ENABLED;
+        }
+
+        @Override
+        protected Boolean getInitialValue() {
+            return DISABLED;
+        }
+
+        @Override
+        protected Boolean getCurrentValue() {
+            return mContentSettings.getJavaScriptEnabled();
+        }
+
+        @Override
+        protected void setCurrentValue(Boolean value) {
+            mContentSettings.setJavaScriptEnabled(value);
+        }
+
+        @Override
+        protected void doEnsureSettingHasValue(Boolean value) throws Throwable {
+            loadDataSync(getData());
+            assertEquals(
+                value == ENABLED ? JS_ENABLED_STRING : JS_DISABLED_STRING,
+                getTitleOnUiThread());
+        }
+
+        private String getData() {
+            return "<html><head><title>" + JS_DISABLED_STRING + "</title>"
+                    + "</head><body onload=\"document.title='" + JS_ENABLED_STRING
+                    + "';\"></body></html>";
+        }
+    }
+
+    class AwSettingsPluginsTestHelper extends AwSettingsTestHelper<Boolean> {
+        private static final String PLUGINS_ENABLED_STRING = "Embed";
+        private static final String PLUGINS_DISABLED_STRING = "NoEmbed";
+
+        AwSettingsPluginsTestHelper(ContentViewCore contentViewCore,
+                                    TestAwContentsClient contentViewClient) throws Throwable {
+            super(contentViewCore, contentViewClient, true);
+        }
+
+        @Override
+        protected Boolean getAlteredValue() {
+            return ENABLED;
+        }
+
+        @Override
+        protected Boolean getInitialValue() {
+            return DISABLED;
+        }
+
+        @Override
+        protected Boolean getCurrentValue() {
+            return mContentSettings.getPluginsEnabled();
+        }
+
+        @Override
+        protected void setCurrentValue(Boolean value) {
+            mContentSettings.setPluginsEnabled(value);
+        }
+
+        @Override
+        protected void doEnsureSettingHasValue(Boolean value) throws Throwable {
+            loadDataSync(getData());
+            assertEquals(
+                value == ENABLED ? PLUGINS_ENABLED_STRING : PLUGINS_DISABLED_STRING,
+                getTitleOnUiThread());
+        }
+
+        private String getData() {
+            return "<html><body onload=\"document.title = document.body.innerText;\">"
+                    + "<noembed>No</noembed><span>Embed</span></body></html>";
+        }
+    }
+
+    class AwSettingsStandardFontFamilyTestHelper extends AwSettingsTestHelper<String> {
+        AwSettingsStandardFontFamilyTestHelper(
+                ContentViewCore contentViewCore,
+                TestAwContentsClient contentViewClient) throws Throwable {
+            super(contentViewCore, contentViewClient, true);
+        }
+
+        @Override
+        protected String getAlteredValue() {
+            return "cursive";
+        }
+
+        @Override
+        protected String getInitialValue() {
+            return "sans-serif";
+        }
+
+        @Override
+        protected String getCurrentValue() {
+            return mContentSettings.getStandardFontFamily();
+        }
+
+        @Override
+        protected void setCurrentValue(String value) {
+            mContentSettings.setStandardFontFamily(value);
+        }
+
+        @Override
+        protected void doEnsureSettingHasValue(String value) throws Throwable {
+            loadDataSync(getData());
+            assertEquals(value, getTitleOnUiThread());
+        }
+
+        private String getData() {
+            return "<html><body onload=\"document.title = " +
+                    "getComputedStyle(document.body).getPropertyValue('font-family');\">"
+                    + "</body></html>";
+        }
+    }
+
+    class AwSettingsDefaultFontSizeTestHelper extends AwSettingsTestHelper<Integer> {
+        AwSettingsDefaultFontSizeTestHelper(
+                ContentViewCore contentViewCore,
+                TestAwContentsClient contentViewClient) throws Throwable {
+            super(contentViewCore, contentViewClient, true);
+        }
+
+        @Override
+        protected Integer getAlteredValue() {
+            return 42;
+        }
+
+        @Override
+        protected Integer getInitialValue() {
+            return 16;
+        }
+
+        @Override
+        protected Integer getCurrentValue() {
+            return mContentSettings.getDefaultFontSize();
+        }
+
+        @Override
+        protected void setCurrentValue(Integer value) {
+            mContentSettings.setDefaultFontSize(value);
+        }
+
+        @Override
+        protected void doEnsureSettingHasValue(Integer value) throws Throwable {
+            loadDataSync(getData());
+            assertEquals(value.toString() + "px", getTitleOnUiThread());
+        }
+
+        private String getData() {
+            return "<html><body onload=\"document.title = " +
+                    "getComputedStyle(document.body).getPropertyValue('font-size');\">"
+                    + "</body></html>";
+        }
+    }
+
+    class AwSettingsDefaultTextEncodingTestHelper extends AwSettingsTestHelper<String> {
+        AwSettingsDefaultTextEncodingTestHelper(
+                ContentViewCore contentViewCore,
+                TestAwContentsClient contentViewClient) throws Throwable {
+            super(contentViewCore, contentViewClient, true);
+        }
+
+        @Override
+        protected String getAlteredValue() {
+            return "utf-8";
+        }
+
+        @Override
+        protected String getInitialValue() {
+            return "Latin-1";
+        }
+
+        @Override
+        protected String getCurrentValue() {
+            return mContentSettings.getDefaultTextEncodingName();
+        }
+
+        @Override
+        protected void setCurrentValue(String value) {
+            mContentSettings.setDefaultTextEncodingName(value);
+        }
+
+        @Override
+        protected void doEnsureSettingHasValue(String value) throws Throwable {
+            loadDataSync(getData());
+            assertEquals(value, getTitleOnUiThread());
+        }
+
+        private String getData() {
+            return "<html><body onload='document.title=document.defaultCharset'></body></html>";
+        }
+    }
+
+    class AwSettingsUserAgentTestHelper extends AwSettingsTestHelper<String> {
+        private final String mDefaultUa;
+        private static final String DEFAULT_UA = "";
+        private static final String CUSTOM_UA = "ChromeViewTest";
+
+        AwSettingsUserAgentTestHelper(
+                ContentViewCore contentViewCore,
+                TestAwContentsClient contentViewClient) throws Throwable {
+            super(contentViewCore, contentViewClient, true);
+            mDefaultUa = mContentSettings.getUserAgentString();
+        }
+
+        @Override
+        protected String getAlteredValue() {
+            return CUSTOM_UA;
+        }
+
+        @Override
+        protected String getInitialValue() {
+            return DEFAULT_UA;
+        }
+
+        @Override
+        protected String getCurrentValue() {
+            // The test framework expects that getXXX() == Z after setXXX(Z).
+            // But setUserAgentString("" / null) resets the UA string to default,
+            // and getUserAgentString returns the default UA string afterwards.
+            // To align with the framework, we return an empty string instead of
+            // the default UA.
+            String currentUa = mContentSettings.getUserAgentString();
+            return mDefaultUa.equals(currentUa) ? DEFAULT_UA : currentUa;
+        }
+
+        @Override
+        protected void setCurrentValue(String value) {
+            mContentSettings.setUserAgentString(value);
+        }
+
+        @Override
+        protected void doEnsureSettingHasValue(String value) throws Throwable {
+            loadDataSync(getData());
+            assertEquals(
+                value == DEFAULT_UA ? mDefaultUa : value,
+                getTitleOnUiThread());
+        }
+
+        private String getData() {
+            return "<html>" +
+                    "<body onload='document.writeln(document.title=navigator.userAgent)'></body>" +
+                    "</html>";
+        }
+    }
+
+    class AwSettingsDomStorageEnabledTestHelper extends AwSettingsTestHelper<Boolean> {
+        private static final String NO_LOCAL_STORAGE = "No localStorage";
+        private static final String HAS_LOCAL_STORAGE = "Has localStorage";
+
+        AwSettingsDomStorageEnabledTestHelper(
+                ContentViewCore contentViewCore,
+                TestAwContentsClient contentViewClient) throws Throwable {
+            super(contentViewCore, contentViewClient, true);
+        }
+
+        @Override
+        protected Boolean getAlteredValue() {
+            return ENABLED;
+        }
+
+        @Override
+        protected Boolean getInitialValue() {
+            return DISABLED;
+        }
+
+        @Override
+        protected Boolean getCurrentValue() {
+            return mContentSettings.getDomStorageEnabled();
+        }
+
+        @Override
+        protected void setCurrentValue(Boolean value) {
+            mContentSettings.setDomStorageEnabled(value);
+        }
+
+        @Override
+        protected void doEnsureSettingHasValue(Boolean value) throws Throwable {
+            // It is not permitted to access localStorage from data URLs in WebKit,
+            // that is why a standalone page must be used.
+            AwSettingsTest.this.loadUrlSync(
+                mContentViewCore,
+                mContentViewClient.getOnPageFinishedHelper(),
+                UrlUtils.getTestFileUrl("webview/localStorage.html"));
+            assertEquals(
+                value == ENABLED ? HAS_LOCAL_STORAGE : NO_LOCAL_STORAGE,
+                getTitleOnUiThread());
+        }
+    }
+
+    // The test verifies that JavaScript is disabled upon WebView
+    // creation without accessing ContentSettings. If the test passes,
+    // it means that WebView-specific web preferences configuration
+    // is applied on WebView creation. JS state is used, because it is
+    // enabled by default in Chrome, but must be disabled by default
+    // in WebView.
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testJavaScriptDisabledByDefault() throws Throwable {
+        final String JS_ENABLED_STRING = "JS has run";
+        final String JS_DISABLED_STRING = "JS has not run";
+        final String TEST_PAGE_HTML =
+                "<html><head><title>" + JS_DISABLED_STRING + "</title>"
+                + "</head><body onload=\"document.title='" + JS_ENABLED_STRING
+                + "';\"></body></html>";
+        final TestAwContentsClient contentClient = new TestAwContentsClient();
+        final ContentViewCore contentView =
+                createAwTestContainerViewOnMainSync(false, contentClient).getContentViewCore();
+        loadDataSync(
+            contentView,
+            contentClient.getOnPageFinishedHelper(),
+            TEST_PAGE_HTML,
+            "text/html",
+            false);
+        assertEquals(JS_DISABLED_STRING, getTitleOnUiThread(contentView));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testJavaScriptEnabledNormal() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, NORMAL_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsJavaScriptTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsJavaScriptTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testJavaScriptEnabledIncognito() throws Throwable {
+        ViewPair views = createViews(INCOGNITO_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsJavaScriptTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsJavaScriptTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testJavaScriptEnabledBoth() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsJavaScriptTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsJavaScriptTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testPluginsEnabledNormal() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, NORMAL_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsPluginsTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsPluginsTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testPluginsEnabledIncognito() throws Throwable {
+        ViewPair views = createViews(INCOGNITO_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsPluginsTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsPluginsTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testPluginsEnabledBoth() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsPluginsTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsPluginsTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testStandardFontFamilyNormal() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, NORMAL_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsStandardFontFamilyTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsStandardFontFamilyTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testStandardFontFamilyIncognito() throws Throwable {
+        ViewPair views = createViews(INCOGNITO_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsStandardFontFamilyTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsStandardFontFamilyTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testStandardFontFamilyBoth() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsStandardFontFamilyTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsStandardFontFamilyTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDefaultFontSizeNormal() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, NORMAL_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDefaultFontSizeTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDefaultFontSizeTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDefaultFontSizeIncognito() throws Throwable {
+        ViewPair views = createViews(INCOGNITO_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDefaultFontSizeTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDefaultFontSizeTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDefaultFontSizeBoth() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDefaultFontSizeTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDefaultFontSizeTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDefaultTextEncodingNormal() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, NORMAL_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDefaultTextEncodingTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDefaultTextEncodingTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDefaultTextEncodingIncognito() throws Throwable {
+        ViewPair views = createViews(INCOGNITO_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDefaultTextEncodingTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDefaultTextEncodingTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDefaultTextEncodingBoth() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDefaultTextEncodingTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDefaultTextEncodingTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testUserAgentNormal() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, NORMAL_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsUserAgentTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsUserAgentTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testUserAgentIncognito() throws Throwable {
+        ViewPair views = createViews(INCOGNITO_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsUserAgentTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsUserAgentTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testUserAgentBoth() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsUserAgentTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsUserAgentTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDomStorageEnabledNormal() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, NORMAL_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDomStorageEnabledTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDomStorageEnabledTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDomStorageEnabledIncognito() throws Throwable {
+        ViewPair views = createViews(INCOGNITO_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDomStorageEnabledTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDomStorageEnabledTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    @SmallTest
+    @Feature({"Android-WebView", "Preferences"})
+    public void testDomStorageEnabledBoth() throws Throwable {
+        ViewPair views = createViews(NORMAL_VIEW, INCOGNITO_VIEW);
+        runPerViewSettingsTest(
+            new AwSettingsDomStorageEnabledTestHelper(views.getView0(), views.getClient0()),
+            new AwSettingsDomStorageEnabledTestHelper(views.getView1(), views.getClient1()));
+    }
+
+    class ViewPair {
+        private final ContentViewCore view0;
+        private final TestAwContentsClient client0;
+        private final ContentViewCore view1;
+        private final TestAwContentsClient client1;
+
+        ViewPair(ContentViewCore view0, TestAwContentsClient client0,
+                 ContentViewCore view1, TestAwContentsClient client1) {
+            this.view0 = view0;
+            this.client0 = client0;
+            this.view1 = view1;
+            this.client1 = client1;
+        }
+
+        ContentViewCore getView0() {
+            return view0;
+        }
+
+        TestAwContentsClient getClient0() {
+            return client0;
+        }
+
+        ContentViewCore getView1() {
+            return view1;
+        }
+
+        TestAwContentsClient getClient1() {
+            return client1;
+        }
+    }
+
+    /**
+     * Runs the tests to check if a setting works properly in the case of
+     * multiple WebViews.
+     *
+     * @param helper0 Test helper for the first ContentView
+     * @param helper1 Test helper for the second ContentView
+     * @throws Throwable
+     */
+    private void runPerViewSettingsTest(AwSettingsTestHelper helper0,
+                                        AwSettingsTestHelper helper1) throws Throwable {
+        helper0.ensureSettingHasInitialValue();
+        helper1.ensureSettingHasInitialValue();
+
+        helper1.setAlteredSettingValue();
+        helper0.ensureSettingHasInitialValue();
+        helper1.ensureSettingHasAlteredValue();
+
+        helper1.setInitialSettingValue();
+        helper0.ensureSettingHasInitialValue();
+        helper1.ensureSettingHasInitialValue();
+
+        helper0.setAlteredSettingValue();
+        helper0.ensureSettingHasAlteredValue();
+        helper1.ensureSettingHasInitialValue();
+
+        helper0.setInitialSettingValue();
+        helper0.ensureSettingHasInitialValue();
+        helper1.ensureSettingHasInitialValue();
+
+        helper0.setAlteredSettingValue();
+        helper0.ensureSettingHasAlteredValue();
+        helper1.ensureSettingHasInitialValue();
+
+        helper1.setAlteredSettingValue();
+        helper0.ensureSettingHasAlteredValue();
+        helper1.ensureSettingHasAlteredValue();
+
+        helper0.setInitialSettingValue();
+        helper0.ensureSettingHasInitialValue();
+        helper1.ensureSettingHasAlteredValue();
+
+        helper1.setInitialSettingValue();
+        helper0.ensureSettingHasInitialValue();
+        helper1.ensureSettingHasInitialValue();
+    }
+
+    private ViewPair createViews(
+            boolean firstIsIncognito,
+            boolean secondIsIncognito) throws Throwable {
+        TestAwContentsClient client0 = new TestAwContentsClient();
+        TestAwContentsClient client1 = new TestAwContentsClient();
+        return new ViewPair(
+            createAwTestContainerViewOnMainSync(
+                firstIsIncognito, client0).getContentViewCore(),
+            client0,
+            createAwTestContainerViewOnMainSync(
+                secondIsIncognito, client1).getContentViewCore(),
+            client1);
+    }
+}