Fix tst_qfile::size for configurations using builtin test data

As the files are packaged into the binary, they have to be
extracted, before they can be ::open'ed.

Change-Id: Ie83086a2b9a73b6b0de462bdb52a71bb277ae06f
Reviewed-by: Maurice Kalinowski <maurice.kalinowski@qt.io>

tests/auto/corelib/io/qfile/test/test.pro

@@ -4,6 +4,12 @@ QT = core-private core testlib
 qtHaveModule(network): QT += network
 else: DEFINES += QT_NO_NETWORK
 
+contains(CONFIG, builtin_testdata) {
+    DEFINES += BUILTIN_TESTDATA
+}
+
+TESTDATA += ../BLACKLIST
+
 TARGET = ../tst_qfile
 SOURCES = ../tst_qfile.cpp
 INCLUDEPATH += ../../../../../shared/

tests/auto/corelib/io/qfile/tst_qfile.cpp

@@ -250,6 +250,9 @@ private slots:
     void reuseQFile();
 
 private:
+#ifdef BUILTIN_TESTDATA
+    QSharedPointer<QTemporaryDir> m_dataDir;
+#endif
     enum FileType {
         OpenQFile,
         OpenFd,
@@ -428,8 +431,15 @@ void tst_QFile::initTestCase()
     QVERIFY(!m_forRenamingFile.isEmpty());
     m_twoDotsFile = QFINDTESTDATA("two.dots.file");
     QVERIFY(!m_twoDotsFile.isEmpty());
+
+#ifndef BUILTIN_TESTDATA
     m_testFile = QFINDTESTDATA("testfile.txt");
     QVERIFY(!m_testFile.isEmpty());
+#else
+    m_dataDir = QEXTRACTTESTDATA("/");
+    QVERIFY2(!m_dataDir.isNull(), qPrintable("Could not extract test data"));
+    m_testFile = m_dataDir->path() + "/testfile.txt";
+#endif
     m_resourcesDir = QFINDTESTDATA("resources");
     QVERIFY(!m_resourcesDir.isEmpty());
     m_noEndOfLineFile = QFINDTESTDATA("noendofline.txt");