Fix tests that assume system files are owned by root for qemu

If QEMU is provided sysroot with QEMU_LD_PREFIX, it opens files from there. If their
owner is the current user, testing their access rights based on assumption that they
are root fails. Skip the tests in that case similarly as is already done when the
tests are run as root.

This fixes following tests:
- tst_QTemporaryDir::nonWritableCurrentDir
- tst_QNetworkReply::getErrors(file-permissions)
- tst_qstandardpaths::testCustomRuntimeDirectory

Task-number: QTBUG-59966
Change-Id: I972ce37b4b5a7747cdd732a8e4a737ef09cbc6a5
Reviewed-by: Teemu Holappa <teemu.holappa@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>

1 files changed, 14 insertions, 2 deletions

diff --git a/tests/auto/corelib/io/qstandardpaths/tst_qstandardpaths.cpp b/tests/auto/corelib/io/qstandardpaths/tst_qstandardpaths.cpp
index 0a00e00d83..3de777653e 100644
--- a/tests/auto/corelib/io/qstandardpaths/tst_qstandardpaths.cpp
+++ b/tests/auto/corelib/io/qstandardpaths/tst_qstandardpaths.cpp
@@ -46,6 +46,8 @@
 #define Q_XDG_PLATFORM
 #endif
 
+#include "emulationdetector.h"
+
 // Update this when adding new enum values; update enumNames too
 static const int MaxStandardLocation = QStandardPaths::AppConfigLocation;
 
@@ -485,14 +487,24 @@ void tst_qstandardpaths::testCustomRuntimeDirectory()
     EnvVarRestorer restorer;
 
     // When $XDG_RUNTIME_DIR points to a directory with wrong ownership, QStandardPaths should warn
-    qputenv("XDG_RUNTIME_DIR", QFile::encodeName("/tmp"));
+    QByteArray rootOwnedFileName = "/tmp";
+    if (EmulationDetector::isRunningArmOnX86()) {
+        // Directory "tmp" under toolchain sysroot is detected by qemu and has same uid as current user.
+        // Try /opt instead, it might not be located in the sysroot.
+        QFileInfo rootOwnedFile = QFileInfo(QString::fromLatin1(rootOwnedFileName));
+        if (rootOwnedFile.ownerId() == ::geteuid()) {
+            rootOwnedFileName = "/opt";
+        }
+    }
+    qputenv("XDG_RUNTIME_DIR", QFile::encodeName(rootOwnedFileName));
+
     // It's very unlikely that /tmp is 0600 or that we can chmod it
     // The call below outputs
     //   "QStandardPaths: wrong ownership on runtime directory /tmp, 0 instead of $UID"
     // but we can't reliably expect that it's owned by uid 0, I think.
     const uid_t uid = geteuid();
     QTest::ignoreMessage(QtWarningMsg,
-            qPrintable(QString::fromLatin1("QStandardPaths: wrong ownership on runtime directory /tmp, 0 instead of %1").arg(uid)));
+            qPrintable(QString::fromLatin1("QStandardPaths: wrong ownership on runtime directory " + rootOwnedFileName + ", 0 instead of %1").arg(uid)));
     const QString runtimeDir = QStandardPaths::writableLocation(QStandardPaths::RuntimeLocation);
     QVERIFY2(runtimeDir.isEmpty(), qPrintable(runtimeDir));