Add more tests for QList/QString/QBA

The major part is stability tests for QList operations,
Also added std::shared_ptr to the Custom type. shared_ptr
accesses the memory which does not directly belong to
QList, so using it inside a passed-to-qlist type is
beneficial (e.g. ASan could catch extra issues)

Basic prepend-aware cases added to QString/QBA tests

Task-number: QTBUG-93019
Pick-to: dev 6.0 6.1
Change-Id: I50e742bdf10ea9de2de66539a7dbb9abc4352f82
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 73 insertions, 0 deletions

diff --git a/tests/auto/corelib/text/qstring/tst_qstring.cpp b/tests/auto/corelib/text/qstring/tst_qstring.cpp
index 79c4fa4ab0..c962496980 100644
--- a/tests/auto/corelib/text/qstring/tst_qstring.cpp
+++ b/tests/auto/corelib/text/qstring/tst_qstring.cpp
@@ -2419,6 +2419,36 @@ void tst_QString::insert_special_cases()
     QCOMPARE(a.insert(1, QLatin1String("BCD")), QString("ABCDEF"));
     QCOMPARE(a.insert(3, QLatin1String("-")), QString("ABC-DEF"));
     QCOMPARE(a.insert(a.size() + 1, QLatin1String("XYZ")), QString("ABC-DEF XYZ"));
+
+    {
+        a = "one";
+        a.prepend(u'a');
+        QString b(a.data_ptr()->freeSpaceAtEnd(), u'b');
+        QCOMPARE(a.insert(a.size() + 1, QLatin1String(b.toLatin1())), QString("aone ") + b);
+    }
+
+    {
+        a = "onetwothree";
+        while (a.size() - 1)
+            a.remove(0, 1);
+        QString b(a.data_ptr()->freeSpaceAtEnd() + 1, u'b');
+        QCOMPARE(a.insert(a.size() + 1, QLatin1String(b.toLatin1())), QString("e ") + b);
+    }
+
+    {
+        a = "one";
+        a.prepend(u'a');
+        QString b(a.data_ptr()->freeSpaceAtEnd(), u'b');
+        QCOMPARE(a.insert(a.size() + 1, b), QString("aone ") + b);
+    }
+
+    {
+        a = "onetwothree";
+        while (a.size() - 1)
+            a.remove(0, 1);
+        QString b(a.data_ptr()->freeSpaceAtEnd() + 1, u'b');
+        QCOMPARE(a.insert(a.size() + 1, b), QString("e ") + b);
+    }
 }
 
 void tst_QString::append_data(bool emptyIsNoop)
@@ -2478,6 +2508,49 @@ void tst_QString::append_special_cases()
         a.append(QLatin1String("BC"));
         QCOMPARE(a, QLatin1String("ABC"));
     }
+
+    {
+        QString a = "one";
+        a.prepend(u'a');
+        QString b(a.data_ptr()->freeSpaceAtEnd(), u'b');
+        QCOMPARE(a.append(QLatin1String(b.toLatin1())), QString("aone") + b);
+    }
+
+    {
+        QString a = "onetwothree";
+        while (a.size() - 1)
+            a.remove(0, 1);
+        QString b(a.data_ptr()->freeSpaceAtEnd(), u'b');
+        QCOMPARE(a.append(QLatin1String(b.toLatin1())), QString("e") + b);
+    }
+
+    {
+        QString a = "one";
+        a.prepend(u'a');
+        QString b(a.data_ptr()->freeSpaceAtEnd(), u'b');
+        QCOMPARE(a.append(b), QString("aone") + b);
+    }
+
+    {
+        QString a = "onetwothree";
+        while (a.size() - 1)
+            a.remove(0, 1);
+        QString b(a.data_ptr()->freeSpaceAtEnd() + 1, u'b');
+        QCOMPARE(a.append(b), QString("e") + b);
+    }
+
+    {
+        QString a = "one";
+        a.prepend(u'a');
+        QCOMPARE(a.append(u'b'), QString("aoneb"));
+    }
+
+    {
+        QString a = "onetwothree";
+        while (a.size() - 1)
+            a.remove(0, 1);
+        QCOMPARE(a.append(u'b'), QString("eb"));
+    }
 }
 
 void tst_QString::append_bytearray_special_cases_data()