Fixing several tests

Using isinstance instead of comparing classes names
Removing unnecessary tuple check, treated by the return value unpacking
Adding missing inject code tests
Adding qfile.getchar test

Fixing QLocale.to* methods
fixing __setitem__ in qbytearray

tests/qtcore/qfile_test.py

@@ -0,0 +1,31 @@
+
+import unittest
+
+import os
+import tempfile
+
+from PySide.QtCore import QFile, QIODevice
+
+class GetCharTest(unittest.TestCase):
+    '''Test case for QIODevice.getChar in QFile'''
+
+    def setUp(self):
+        '''Acquire resources'''
+        handle, self.filename = tempfile.mkstemp()
+        os.write(handle, 'a')
+        os.close(handle)
+
+    def tearDown(self):
+        '''release resources'''
+        os.remove(self.filename)
+
+    def testBasic(self):
+        '''QFile.getChar'''
+        obj = QFile(self.filename)
+        obj.open(QIODevice.ReadOnly)
+        self.assertEqual(obj.getChar(), (True, 'a'))
+        self.assert_(not obj.getChar()[0])
+        obj.close()
+
+if __name__ == '__main__':
+    unittest.main()