Fix issue with compile_dmtf_mof method failing tests

Fix issue where we were using a string as parameter for mof_compiler
search_paths. Changed to use list.

Changed verbose diagnostic message that announces missing dependence in
compiler

Correct Issues from Andy, v3.

Corrected comments by Andy in the pr from 23 Apr. Also made a few other
editorial changes to documentation and cleaned up the tests slightly so
the TestDMTFClass test tests the same thing on each succes test.

Extended Error test for schema_version

docs/mocksupport.rst

@@ -349,7 +349,8 @@ with a simple callback function.
         ip1 = params['IP1']
 
         # Access the mock repository through the faked connection object.
-        # In case of a static CIM method, objectname is a CIMClassName object.
+        # In case of a static CIM method, objectname is a
+        :class:`~pywbem.CIMClassName` object.
         cl = conn.GetClass(objectname)
 
         # Set return value and output parameters
@@ -565,7 +566,7 @@ Building the mock repository
 ----------------------------
 
 The mock repository should contain the CIM qualifier declarations, CIM classes,
-CIMInstances, and CIM methods to be used in the mock environment. The
+CIM instances, and CIM methods to be used in the mock environment. The
 mock user creates a repository that contains the CIM Objects required for
 the operations to be executed in the mock environment. Thus, if the user only
 requires CIM_Computer system, only that class and its dependent classes need
@@ -578,7 +579,8 @@ repository.
 
 There are two ways to build a mock repository:
 
-* Directly from pywbem CIM objects (CIMClass. CIMInstance, etc). See
+* Directly from pywbem CIM objects (:class:`~pywbem.CIMClass`,
+  :class:`~pywbem.CIMInstance`, etc). See
   :meth:`~pywbem_mock.FakedWBEMConnection.add_cimobjects`
 
 * From MOF definitions of the objects (which can be a string or a file, in

pywbem/mof_compiler.py

@@ -637,9 +637,10 @@ def p_mp_createClass(p):
                                 raise err
                             try:
                                 if p.parser.verbose:
-                                    p.parser.log('Creating missing dependent '
-                                                 'class %s:%s' %
-                                                 (ns, cc.classname))
+                                    p.parser.log('Class %s namespace %s '
+                                                 'depends on class %s which is '
+                                                 'not in repository.' %
+                                                 (cc.classname, ns, cln))
                                 p.parser.mofcomp.compile_file(moffile, ns)
                             except CIMError as ce:
                                 if ce.args[0] == CIM_ERR_NOT_FOUND:
@@ -2541,14 +2542,14 @@ def find_mof(self, classname):
           :term:`string`: Path name of the MOF file defining the CIM class, if
           it was found. `None`, if it was not found.
         """
+
         classname = classname.lower()
         for search in self.parser.search_paths:
             for root, dummy_dirs, files in os.walk(search):
                 for file_ in files:
                     if file_.endswith('.mof') and \
                             file_[:-4].lower() == classname:
                         return root + '/' + file_
-
         return None
 
     def rollback(self, verbose=False):