[sailfish-browser] Add unit test cases for suffling tabs

Aim is to automate a test where a WebPage stops responding. Added
cases do not reproduce that error yet.

src/webpages.cpp

@@ -240,6 +240,34 @@ void WebPages::dumpPages() const
     qDebug() << "---- end ------";
 }
 
+QList<int> WebPages::liveTabs()
+{
+    QList<WebPageEntry *> pages = m_activePages.values();
+    QList<int> tabIds;
+    int count = pages.count();
+    for (int i = 0; i < count; ++i) {
+        WebPageEntry *pageEntry = pages.at(i);
+        if (pageEntry->webPage) {
+            tabIds << pageEntry->webPage->tabId();
+        }
+    }
+    return tabIds;
+}
+
+QList<int> WebPages::zombifiedTabs()
+{
+    QMapIterator<int, WebPageEntry*> pages(m_activePages);
+    QList<int> tabIds;
+
+    while (pages.hasNext()) {
+        pages.next();
+        if (!pages.value()->webPage) {
+            tabIds << pages.key();
+        }
+    }
+    return tabIds;
+}
+
 WebPages::WebPageEntry::WebPageEntry(DeclarativeWebPage *webPage, QRectF *cssContentRect)
     : webPage(webPage)
     , cssContentRect(cssContentRect)

src/webpages.h

@@ -48,6 +48,10 @@ class WebPages : public QObject
     int parentTabId(int tabId) const;
     void dumpPages() const;
 
+    // Testability helpers
+    QList<int> liveTabs();
+    QList<int> zombifiedTabs();
+
 private:
     struct WebPageEntry {
         WebPageEntry(DeclarativeWebPage *webPage, QRectF *cssContentRect);

tests/auto/common/testobject.cpp

@@ -48,7 +48,7 @@ void TestObject::init(const QUrl &url)
 void TestObject::waitSignals(QSignalSpy &spy, int expectedSignalCount) const
 {
     int i = 0;
-    int maxWaits = 10;
+    int maxWaits = qMax(10, expectedSignalCount);
     while (spy.count() < expectedSignalCount && i < maxWaits) {
         spy.wait();
         ++i;

tests/auto/tests.xml

@@ -23,7 +23,7 @@
                <step>cd /opt/tests/sailfish-browser/auto/ &amp;&amp; ./tst_dbmanager -platform wayland-egl -iterations 10</step>
            </case>
            <case manual="false" name="webview">
-               <step>cd /opt/tests/sailfish-browser/auto/ &amp;&amp; ./tst_webview -platform wayland-egl</step>
+               <step>cd /opt/tests/sailfish-browser/auto/ &amp;&amp; BROWSER_OFFLINE=1 ./tst_webview</step>
            </case>
            <case manual="false" name="desktopbookmarkwriter">
                <step>cd /opt/tests/sailfish-browser/auto/ &amp;&amp; ./tst_desktopbookmarkwriter</step>

tests/auto/tst_webview/tst_webview.cpp

@@ -27,7 +27,6 @@ class tst_webview : public TestObject
 
 public:
     tst_webview();
-
 private slots:
     void initTestCase();
     void testNewTab_data();
@@ -42,23 +41,30 @@ private slots:
     void clear();
     void restart();
     void changeTabAndLoad();
+    void insertOnlinePages_data();
+    void insertOnlinePages();
+    void suffleTabsWaitLoaded();
+    void suffleTabsSwitchImmediately();
     void cleanupTestCase();
 
 private:
+    void activeTabAndLoad(int i);
     QString formatUrl(QString fileName) const;
     void verifyHistory(QList<TestTab> &historyOrder);
 
     DeclarativeHistoryModel *historyModel;
     DeclarativeTabModel *tabModel;
     DeclarativeWebContainer *webContainer;
     QString baseUrl;
+    bool offline;
 };
 
 tst_webview::tst_webview()
     : TestObject()
     , historyModel(0)
     , tabModel(0)
     , webContainer(0)
+    , offline(getenv("BROWSER_OFFLINE"))
 {
 }
 
@@ -674,6 +680,130 @@ void tst_webview::changeTabAndLoad()
     QCOMPARE(webContainer->m_webPages->m_activePages.count(), 2);
 }
 
+void tst_webview::insertOnlinePages_data()
+{
+    QSignalSpy tabsCleared(tabModel, SIGNAL(tabsCleared()));
+    tabModel->clear();
+    QTest::qWait(1000);
+    waitSignals(tabsCleared, 1);
+    QVERIFY(tabModel->count() == 0);
+
+    webContainer->setProperty("maxLiveTabCount", 3);
+    QTest::addColumn<QString>("newUrl");
+    QTest::addColumn<int>("liveTabCount");
+
+    QTest::newRow("google.com") << "http://www.google.com" << 1;
+    QTest::newRow("m.engadget.com") << "http://m.engadget.com" << 2;
+    QTest::newRow("yahoo.com") << "http://www.yahoo.com" << 3;
+    QTest::newRow("facebook.com") << "http://m.facebook.com" << 3;
+}
+
+void tst_webview::insertOnlinePages()
+{
+    if (offline) {
+        QEXPECT_FAIL("", "This cannot be executed without network", Abort);
+        QCOMPARE(false, true);
+    }
+
+    QFETCH(QString, newUrl);
+    QFETCH(int, liveTabCount);
+
+    QSignalSpy urlChangedSpy(webContainer, SIGNAL(urlChanged()));
+    QSignalSpy tabCountSpy(tabModel, SIGNAL(countChanged()));
+    QSignalSpy activeTabChangedSpy(tabModel, SIGNAL(activeTabChanged(int,int)));
+    QSignalSpy tabAddedSpy(tabModel, SIGNAL(tabAdded(int)));
+    QSignalSpy contentItemSpy(webContainer, SIGNAL(contentItemChanged()));
+    QSignalSpy loadingChanged(webContainer, SIGNAL(loadingChanged()));
+
+    tabModel->newTab(newUrl, "");
+
+    // Wait for MozView instance change.
+    waitSignals(contentItemSpy, 1);
+    QCOMPARE(contentItemSpy.count(), 1);
+
+    // Load started and ended
+    waitSignals(loadingChanged, 2);
+
+    // ~last in the sequence of adding a new tab.
+    waitSignals(tabAddedSpy, 1);
+
+    // Ignore possible redirection by checking that at least one url and one title change were emitted.
+    QVERIFY(urlChangedSpy.count() > 0);
+    QCOMPARE(tabCountSpy.count(), 1);
+
+    QCOMPARE(webContainer->m_webPages->liveTabs().count(), liveTabCount);
+    QCOMPARE(activeTabChangedSpy.count(), 1);
+}
+
+void tst_webview::suffleTabsWaitLoaded()
+{
+    if (offline) {
+        QEXPECT_FAIL("", "This cannot be executed without network", Abort);
+        QCOMPARE(false, true);
+    }
+
+    // Loops through 4 tabs so that in every 2nd round we pick inactive tab and after which we
+    // pick zombified tab.
+    for (int i = 0; i < 4; ++i) {
+        QSignalSpy loadingChanged(webContainer, SIGNAL(loadingChanged()));
+        QSignalSpy activeTabChangedSpy(tabModel, SIGNAL(activeTabChanged(int,int,bool)));
+
+        activeTabAndLoad(i);
+
+        QCOMPARE(activeTabChangedSpy.count(), 1);
+        waitSignals(loadingChanged, 2);
+        QVERIFY(webContainer->webPage());
+        QVERIFY(!webContainer->webPage()->loading());
+        QVERIFY(webContainer->webPage()->property("loaded").toBool());
+    }
+}
+
+void tst_webview::suffleTabsSwitchImmediately()
+{
+    if (offline) {
+        QEXPECT_FAIL("", "This cannot be executed without network", Abort);
+        QCOMPARE(false, true);
+    }
+
+    // Loops through 4 tabs so that in every 2nd round we pick inactive tab and after which we
+    // pick zombified tab.
+    for (int i = 0; i < 4; ++i) {
+        QSignalSpy activeTabChangedSpy(tabModel, SIGNAL(activeTabChanged(int,int,bool)));
+        QSignalSpy loadProgressSpy(webContainer, SIGNAL(loadProgressChanged()));
+
+        activeTabAndLoad(i);
+        QCOMPARE(activeTabChangedSpy.count(), 1);
+        QVERIFY(webContainer->webPage());
+
+        // Let loading to proceed to 90%
+        int i = 0;
+        while (i < 90 && webContainer->loadProgress() < 90) {
+            loadProgressSpy.wait();
+            ++i;
+        }
+
+        QVERIFY(webContainer->loadProgress() >= 90);
+    }
+
+    // Go through all zombie tabs so that each of them get fully loaded.
+    for (int i = 0; i < 4; ++i) {
+        QSignalSpy activeTabChangedSpy(tabModel, SIGNAL(activeTabChanged(int,int,bool)));
+
+        QList<int> zombifiedTabs = webContainer->m_webPages->zombifiedTabs();
+        QCOMPARE(zombifiedTabs.count(), 1);
+        int tabId = zombifiedTabs.at(0);
+        tabModel->activateTabById(tabId);
+        QSignalSpy loadingChanged(webContainer, SIGNAL(loadingChanged()));
+        QCOMPARE(activeTabChangedSpy.count(), 1);
+
+        // 60secs of timeout per loading change.
+        waitSignals(loadingChanged, 2, 60000);
+        QVERIFY(webContainer->webPage());
+        QVERIFY(!webContainer->webPage()->loading());
+        QVERIFY(webContainer->webPage()->property("loaded").toBool());
+    }
+}
+
 void tst_webview::cleanupTestCase()
 {
     QTest::qWait(1000);
@@ -715,6 +845,40 @@ void tst_webview::verifyHistory(QList<TestTab> &historyOrder)
     }
 }
 
+// Used with suffleTabsWaitLoaded and suffleTabsSwitchImmediately (4 tabs)
+void tst_webview::activeTabAndLoad(int i)
+{
+    int tabId = -1;
+    bool reload = false;
+    if (i % 2 == 0) {
+        // Inactive and not current tab
+        QList<int> liveTabs = webContainer->m_webPages->liveTabs();
+        QCOMPARE(liveTabs.count(), 3);
+        tabId = liveTabs.at(random(0, 2));
+
+        while (tabId == webContainer->tabId()) {
+            tabId = liveTabs.at(random(0, 2));
+        }
+        reload = true;
+    } else {
+        // First and last zombified tab.
+        QList<int> zombifiedTabs = webContainer->m_webPages->zombifiedTabs();
+        QCOMPARE(zombifiedTabs.count(), 1);
+        tabId = zombifiedTabs.at(0);
+    }
+
+    tabModel->activateTabById(tabId);
+
+    QVERIFY(webContainer->webPage());
+    QSignalSpy loadingSpy(webContainer->webPage(), SIGNAL(loadingChanged()));
+
+    // Reload inactive tab.
+    if (reload) {
+        webContainer->webPage()->reload();
+    }
+    waitSignals(loadingSpy, 1);
+}
+
 int main(int argc, char *argv[])
 {
     setenv("USE_ASYNC", "1", 1);

tests/auto/tst_webview/tst_webview.qml

@@ -31,6 +31,13 @@ ApplicationWindow {
             active: true
             toolbarHeight: 50
             portrait: true
+            width: parent.width
+            height: parent.height
+
+            onLoadProgressChanged: console.log("progress:", loadProgress, url, tabId)
+            onLoadingChanged: console.log(loading, url, tabId)
+            onUrlChanged: console.log(url, tabId)
+            onContentItemChanged: console.log(contentItem, "url:", (contentItem ? contentItem.url : "no url" ), "tabId:", (contentItem ? contentItem.tabId : -1 ))
 
             HistoryModel {
                 id: historyModel