QTestlib: Speed up comparison of qsizetype

Add a qCompare() overload for qsizetype, preventing it
falling back to the slow code path pre-formatting expected/actual.
toString() should use the correct format from the already present
int-types (see macro TO_STRING_IMPL).

Complements  94aa350621.

Task-number: QTBUG-38890
Change-Id: Ieb8cea7de086141a2c80f93b4c1be01572be96df
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>

src/testlib/qtestcase.cpp

@@ -2577,6 +2577,21 @@ bool QTest::qCompare(int t1, int t2, const char *actual, const char *expected,
                                 t1, t2, actual, expected, file, line);
 }
 
+#if QT_POINTER_SIZE == 8
+/*! \fn bool QTest::qCompare(qsizetype t1, qsizetype t2, const char *actual, const char *expected, const char *file, int line)
+    \internal
+    \since 6.0
+ */
+
+bool QTest::qCompare(qsizetype t1, qsizetype t2, const char *actual, const char *expected,
+                     const char *file, int line)
+{
+    return QTestResult::compare(t1 == t2,
+                                "Compared values are not the same",
+                                t1, t2, actual, expected, file, line);
+}
+#endif // QT_POINTER_SIZE == 8
+
 /*! \fn bool QTest::qCompare(unsigned t1, unsigned t2, const char *actual, const char *expected, const char *file, int line)
     \internal
     \since 5.14

src/testlib/qtestcase.h

@@ -377,6 +377,11 @@ namespace QTest
     Q_TESTLIB_EXPORT bool qCompare(int t1, int t2, const char *actual, const char *expected,
                                    const char *file, int line);
 
+#if QT_POINTER_SIZE == 8
+    Q_TESTLIB_EXPORT bool qCompare(qsizetype t1, qsizetype t2, const char *actual, const char *expected,
+                                   const char *file, int line);
+#endif
+
     Q_TESTLIB_EXPORT bool qCompare(unsigned t1, unsigned t2, const char *actual, const char *expected,
                                    const char *file, int line);
 

src/testlib/qtestresult.cpp

@@ -415,6 +415,16 @@ bool QTestResult::compare(bool success, const char *failureMsg,
     return compareHelper(success, failureMsg, val1, val2, actual, expected, file, line);
 }
 
+#if QT_POINTER_SIZE == 8
+bool QTestResult::compare(bool success, const char *failureMsg,
+                          qsizetype val1, qsizetype val2,
+                          const char *actual, const char *expected,
+                          const char *file, int line)
+{
+    return compareHelper(success, failureMsg, val1, val2, actual, expected, file, line);
+}
+#endif // QT_POINTER_SIZE == 8
+
 bool QTestResult::compare(bool success, const char *failureMsg,
                           unsigned val1, unsigned val2,
                           const char *actual, const char *expected,

src/testlib/qtestresult_p.h

@@ -94,6 +94,12 @@ public:
                         int val1, int val2,
                         const char *actual, const char *expected,
                         const char *file, int line);
+#if QT_POINTER_SIZE == 8
+    static bool compare(bool success, const char *failureMsg,
+                        qsizetype val1, qsizetype val2,
+                        const char *actual, const char *expected,
+                        const char *file, int line);
+#endif
     static bool compare(bool success, const char *failureMsg,
                         unsigned val1, unsigned val2,
                         const char *actual, const char *expected,