cdma_ruim: Fix unit tests and actually enable them

As pySim.cdma_ruim was not imported by test_files.py, the unit tests
were apparently never executed and hence didn't pass.  Let's fix both
of those problems.

Change-Id: Icdf4621eb68d05a4948ae9efeb81a007d48e1bb7
diff --git a/pySim/cdma_ruim.py b/pySim/cdma_ruim.py
index 3fab558..8b66490 100644
--- a/pySim/cdma_ruim.py
+++ b/pySim/cdma_ruim.py
@@ -91,7 +91,7 @@
 
     _test_de_encode = [
         ( "010801536b796c696e6b204e57ffffffffffffffffffffffffffffffffffffffffffff",
-          { 'rfu0' : 0, 'show_in_hsa' : True, 'rfu2' : 0,
+          { 'rfu1' : 0, 'show_in_hsa' : True, 'rfu2' : 0,
             'char_encoding' : 8, 'lang_ind' : 1, 'spn' : 'Skylink NW' } ),
     ]
 
@@ -133,9 +133,9 @@
             # Byte 1: Display Condition
             'ms_operation_mode'/Enum(Byte, self.OP_MODE),
             # Bytes 2-3: Additional information
-            'additional_info'/Bytes(2),
+            'additional_info'/HexAdapter(Bytes(2)),
             # Bytes 4..: RFU
-            'rfu'/GreedyBytesRFU,
+            'rfu'/HexAdapter(GreedyBytesRFU),
         )
 
 
diff --git a/tests/test_files.py b/tests/test_files.py
index 3fb1062..fe520fb 100755
--- a/tests/test_files.py
+++ b/tests/test_files.py
@@ -29,6 +29,7 @@
 import pySim.ts_51_011
 import pySim.sysmocom_sja2
 import pySim.gsm_r
+import pySim.cdma_ruim
 
 def get_qualified_name(c):
     """return the qualified (by module) name of a class."""