The old code allocated QSignalSpies on the heap and stored them in a
non-owning container, so if one of the many check macros trigger,
those objects would be leaked. Ditto QNetworkReplies. The code also
used dynamically-sized containers for statically-sized data; a common
anti-pattern.
Hold the sample QUrls in a C array instead, QSignalSpies in C arrays
of std::optional (to delay initialization) and QNetworkReplies in a C
array of std::unique_ptr with the existing QScopedPointerDeleteLater
deleter.
Pick-to: 6.7
Change-Id: I7305115af15c079abba6d45c5de8db2198ea7a6d
Reviewed-by: Juha Vuolle <juha.vuolle@qt.io>
20eba275d8