Updated tests to address on-going randomization bug.

Capa problem state was not being copied to module state
during module initialization.
This meant that when check_problem was called the first time,
the seed would be re-generated and saved.

common/lib/xmodule/xmodule/capa_module.py

@@ -171,6 +171,8 @@ class CapaModule(CapaFields, XModule):
                 # add extra info and raise
                 raise Exception(msg), None, sys.exc_info()[2]
 
+        # Ensure that the module state matches the state of the
+        # capa problem
         self.set_state_from_lcp()
 
     def new_lcp(self, state, text=None):

common/lib/xmodule/xmodule/tests/test_capa_module.py

@@ -868,9 +868,7 @@ class CapaModuleTest(unittest.TestCase):
             module = CapaFactory.create(rerandomize=rerandomize)
 
             # Get the seed
-            # module.seed isn't set until the problem is checked/saved,
-            # so we access the capa problem seed directly
-            seed = module.lcp.seed
+            seed = module.seed
             self.assertTrue(seed is not None)
 
             # If we're not rerandomizing, the seed is always set
@@ -930,9 +928,7 @@ class CapaModuleTest(unittest.TestCase):
             module = CapaFactory.create(rerandomize=rerandomize)
 
             # Get the seed
-            # module.seed isn't set until we check/save/reset the problem,
-            # so we access the capa problem seed directly
-            seed = module.lcp.seed
+            seed = module.seed
 
             # We do NOT want the seed to reset if rerandomize
             # is set to 'never' -- it should still be 1