Update code coverage configuration to include cython code.

.coveragerc

@@ -1,8 +1,7 @@
 #coverage.py configuration
 [run]
 source = setools
-# This is SWIG generated:
-omit = setools/policyrep/qpol.py
+plugins = Cython.Coverage
 
 [report]
 exclude_lines =

setools/policyrep/libpolicyrep.pyx

@@ -16,7 +16,6 @@
 # License along with SETools.  If not, see
 # <http://www.gnu.org/licenses/>.
 #
-#cython: language_level=3, c_string_type=str, c_string_encoding=ascii
 
 from cpython.exc cimport PyErr_SetFromErrnoWithFilename
 from cpython.mem cimport PyMem_Malloc, PyMem_Free

setup.py

@@ -34,7 +34,7 @@ class QtHelpCommand(Command):
         os.rename('qhc/apol.qhc', 'setoolsgui/apol/apol.qhc')
         os.rename('qhc/apol.qch', 'setoolsgui/apol/apol.qch')
 
-
+# Library linkage
 lib_dirs = ['.', '/usr/lib64', '/usr/lib', '/usr/local/lib']
 include_dirs = []
 
@@ -46,6 +46,11 @@ if sys.platform.startswith('darwin'):
 else:
     macros=[]
 
+# Code coverage.  Enable this to get coverage in the cython code.
+enable_coverage = bool(os.environ.get("SETOOLS_COVERAGE", False))
+if enable_coverage:
+    macros.append(("CYTHON_TRACE", 1))
+
 ext_py_mods = [Extension('setools.policyrep.libpolicyrep', ['setools/policyrep/libpolicyrep.pyx'],
                          include_dirs=include_dirs,
                          libraries=['selinux', 'sepol'],
@@ -81,7 +86,11 @@ setup(name='setools',
       scripts=['apol', 'sediff', 'seinfo', 'seinfoflow', 'sesearch', 'sedta'],
       data_files=[(join(sys.prefix, 'share/man/man1'), glob.glob("man/*.1"))],
       package_data={'': ['*.ui', '*.qhc', '*.qch'], 'setools': ['perm_map']},
-      ext_modules=cythonize(ext_py_mods, include_path=['setools/policyrep']),
+      ext_modules=cythonize(ext_py_mods, include_path=['setools/policyrep'],
+                            compiler_directives={"language_level": 3,
+                                                 "c_string_type": "str",
+                                                 "c_string_encoding": "ascii",
+                                                 "linetrace": enable_coverage}),
       test_suite='tests',
       license='GPLv2+, LGPLv2.1+',
       classifiers=[

tox.ini

@@ -1,12 +1,6 @@
 [tox]
 minversion      = 1.4
 envlist         = py34, py35, py36
-# Using site packages is not optimal,
-# but libselinux bindings are not
-# available via PyPI.
-# Any issues this hides should be found
-# by Travis CI, as that env is minimal.
-sitepackages    = True
 
 [pep8]
 exclude         = qpol.py
@@ -19,12 +13,13 @@ commands        = pep8 --version
                   pep8 setools/ setoolsgui/ tests/ seinfo seinfoflow sedta sesearch sediff --statistics
 
 [testenv:coverage]
+setenv          = SETOOLS_COVERAGE = 1
 deps            = networkx==2.0
-                  coverage
+                  coverage>=4.0
                   cython>=0.27
 commands        = coverage --version
                   coverage erase
-                  coverage run setup.py test
+                  coverage run setup.py test -q
                   coverage report
 
 [testenv:lint]