Fix crash in the SQLQueryModel tests

Amend fd5f83e612729cebc5395c992bd98628bb9ea25f

calling fetchMore in create_mapping was a bad idea bacause it may lead
to infinite recurtion
Make a special case for hasChildren instead

Task-number: 250023
Reviewed-by: Marius Bugge Monsen
BT: yes

1 files changed, 5 insertions, 1 deletions

diff --git a/tests/auto/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp b/tests/auto/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp
index 0509d49..4a749f0 100644
--- a/tests/auto/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp
+++ b/tests/auto/qsortfilterproxymodel/tst_qsortfilterproxymodel.cpp
@@ -2596,7 +2596,11 @@ class QtTestModel: public QAbstractItemModel
         }
 
         void fetchMore(const QModelIndex &idx) {
+            if (fetched.contains(idx))
+                return;
+            beginInsertRows(idx, 0, rows-1);
             fetched.insert(idx);
+            endInsertRows();
         }
 
         bool hasChildren(const QModelIndex & = QModelIndex()) const {
@@ -2607,7 +2611,7 @@ class QtTestModel: public QAbstractItemModel
             return fetched.contains(parent) ? rows : 0;
         }
         int columnCount(const QModelIndex& parent = QModelIndex()) const {
-            return fetched.contains(parent) ? cols : 0;
+            return cols;
         }
 
         QModelIndex index(int row, int column, const QModelIndex &parent = QModelIndex()) const