Fix the tst_navigationHistory QML testcase

When the ListView component is created from the QQuickWebEngineHistoryListModel model.
It requires an adapter to get the currentNavigationEntryIndex and navigationEntryCount
for the QQuickWebEngineHistoryListModel::rowCount.
Add the default rowCount value while the adapter is not unavailable because of the lazy
adapter initialization.

Change-Id: Id80d6f56adfea613bdc2c13d9caa1a12f50fddca
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>
Reviewed-by: Andras Becsi <andras.becsi@theqtcompany.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/src/webengine/api/qquickwebenginehistory.cpp b/src/webengine/api/qquickwebenginehistory.cpp
index ffb857791..7924dbc5e 100644
--- a/src/webengine/api/qquickwebenginehistory.cpp
+++ b/src/webengine/api/qquickwebenginehistory.cpp
@@ -63,6 +63,8 @@ QQuickWebEngineBackHistoryListModelPrivate::QQuickWebEngineBackHistoryListModelP
 
 int QQuickWebEngineBackHistoryListModelPrivate::count() const
 {
+    if (!adapter())
+        return -1;
     return adapter()->currentNavigationEntryIndex();
 }
 
@@ -79,6 +81,8 @@ QQuickWebEngineForwardHistoryListModelPrivate::QQuickWebEngineForwardHistoryList
 
 int QQuickWebEngineForwardHistoryListModelPrivate::count() const
 {
+    if (!adapter())
+        return -1;
     return adapter()->navigationEntryCount() - adapter()->currentNavigationEntryIndex() - 1;
 }