Fix various tiny bugs which caused warnings in Pytest

fidimag/common/chain_method_base.py

@@ -436,7 +436,9 @@ def initialise_integrator(self,
                                                self.n_dofs_image,
                                                mass=1,
                                                stepsize=1e-4)
-            self.integrator.set_options()
+            # Note: disabled as at the moment, set_options does not
+            # do anything for the Verlet integrator!
+            # self.integrator.set_options()
             # In Verlet algorithm we only use the total force G and not YxYxG:
             self._llg_evolve = False
         else:

fidimag/common/chain_method_integrators.py

@@ -86,7 +86,7 @@ def run_until(self, t):
         return 0
 
     def set_options(self, rtol=1e-8, atol=1e-8):
-        warnings.warn("Tolerances not available for VerletIntegrator")
+        raise NotImplementedError("Tolerances not available for VerletIntegrator")
 
     def _step(self, t, y, h, f):
         """

fidimag/common/nebm_spherical.py

@@ -13,7 +13,7 @@
 
 
 class NEBM_Spherical(ChainMethodBase):
-    """
+    r"""
 
     ARGUMENTS -----------------------------------------------------------------
 

setup.py

@@ -260,5 +260,11 @@ def glob_files(path, excludes, extension="*.cpp"):
               'fidimag.extensions',
               'fidimag.common',
               ],
-    ext_modules=cythonize(ext_modules, nthreads=nthreads, compiler_directives={'linetrace': True}),
+    ext_modules=cythonize(ext_modules,
+                          nthreads=nthreads,
+                          compiler_directives={
+                              'linetrace': True,
+                              'language_level': '3',
+                          }
+    ),
 )

tests/test_skyrmion_number.py

@@ -49,7 +49,7 @@ def init_m_multiple_sks(pos, r, sk_pos):
 
 
 def test_skx_num_atomistic():
-    """
+    r"""
     Test the *finite spin chirality* or skyrmion number for
     a discrete spins simulation in a two dimensional lattice
 

tests/test_stt.py

@@ -3,7 +3,7 @@
 
 
 def test_sst_field_1d():
-    """
+    r"""
     This is a direct test of the STT C library
     We create a 1-D  4 spins system along the x direction with the
     following components: