diff -r 56cd8111b7f7 -r 41300fa6a67c tests/auto/qresourceengine/tst_qresourceengine.cpp
--- a/tests/auto/qresourceengine/tst_qresourceengine.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/tests/auto/qresourceengine/tst_qresourceengine.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -62,6 +62,7 @@
     void searchPath_data();
     void searchPath();
     void doubleSlashInRoot();
+    void setLocale();
 
 private:
     QString builddir;
@@ -460,6 +461,27 @@
     QVERIFY(QFile::exists("://secondary_root/runtime_resource/search_file.txt"));
 }
 
+void tst_QResourceEngine::setLocale()
+{
+    QLocale::setDefault(QLocale::c());
+
+    // default constructed QResource gets the default locale
+    QResource resource;
+    resource.setFileName("aliasdir/aliasdir.txt");
+    QVERIFY(!resource.isCompressed());
+
+    // change the default locale and make sure it doesn't affect the resource
+    QLocale::setDefault(QLocale("de_CH"));
+    QVERIFY(!resource.isCompressed());
+
+    // then explicitly set the locale on qresource
+    resource.setLocale(QLocale("de_CH"));
+    QVERIFY(resource.isCompressed());
+
+    // the reset the default locale back
+    QLocale::setDefault(QLocale::system());
+}
+
 QTEST_MAIN(tst_QResourceEngine)
 
 #include "tst_qresourceengine.moc"