tst_QByteArrayView: check conversion from various QSpans

This is supposed to work, so check it.

Conflict resolutions for 6.8:
- added missing qspan.h include

Change-Id: I201033656f123b09644e5de447cd5d7b038e5155
Reviewed-by: Ivan Solovev <[email protected]>
(cherry picked from commit 8a3ffe7)
Reviewed-by: Qt Cherry-pick Bot <[email protected]>
(cherry picked from commit 9bcbeea)
Reviewed-by: Ahmad Samir <[email protected]>

tests/auto/corelib/text/qbytearrayview/tst_qbytearrayview.cpp

@@ -5,6 +5,8 @@
 
 #include <QTest>
 
+#include <QtCore/qspan.h>
+
 // for negative testing (can't convert from)
 #include <deque>
 #include <list>
@@ -76,6 +78,26 @@ static_assert(CanConvert<const std::array<char, 1> >);
 static_assert(CanConvert<      std::array<char, 1>&>);
 static_assert(CanConvert<const std::array<char, 1>&>);
 
+static_assert(CanConvert<      QSpan<char> >);
+static_assert(CanConvert<const QSpan<char> >);
+static_assert(CanConvert<      QSpan<char>&>);
+static_assert(CanConvert<const QSpan<char>&>);
+
+static_assert(CanConvert<      QSpan<char, 42> >);
+static_assert(CanConvert<const QSpan<char, 42> >);
+static_assert(CanConvert<      QSpan<char, 42>&>);
+static_assert(CanConvert<const QSpan<char, 42>&>);
+
+static_assert(CanConvert<      QSpan<std::byte> >);
+static_assert(CanConvert<const QSpan<std::byte> >);
+static_assert(CanConvert<      QSpan<std::byte>&>);
+static_assert(CanConvert<const QSpan<std::byte>&>);
+
+static_assert(CanConvert<      QSpan<std::byte, 42> >);
+static_assert(CanConvert<const QSpan<std::byte, 42> >);
+static_assert(CanConvert<      QSpan<std::byte, 42>&>);
+static_assert(CanConvert<const QSpan<std::byte, 42>&>);
+
 static_assert(!CanConvert<std::deque<char>>);
 static_assert(!CanConvert<std::list<char>>);