use a global skip mark

Author: DanielYang59

tests/electronic_structure/test_boltztrap2.py

@@ -24,10 +24,8 @@
         VasprunLoader,
     )
 
-    BOLTZTRAP2_PRESENT = True
 except BoltztrapError:
-    BOLTZTRAP2_PRESENT = False
-
+    pytest.skip("No boltztrap2", allow_module_level=True)
 
 TEST_DIR = f"{TEST_FILES_DIR}/electronic_structure/boltztrap2"
 
@@ -44,7 +42,6 @@
 BZT_TRANSP_FN = f"{TEST_DIR}/bztTranspProps.json.gz"
 
 
-@pytest.mark.skipif(not BOLTZTRAP2_PRESENT, reason="No boltztrap2, skipping tests.")
 class TestVasprunBSLoader(TestCase):
     def setUp(self):
         self.loader = VasprunBSLoader(VASP_RUN)
@@ -84,7 +81,6 @@ def test_get_volume(self):
         assert self.loader.get_volume() == approx(477.6256714925874, abs=1e-5)
 
 
-@pytest.mark.skipif(not BOLTZTRAP2_PRESENT, reason="No boltztrap2, skipping tests.")
 class TestBandstructureLoader(TestCase):
     def setUp(self):
         self.loader = BandstructureLoader(BAND_STRUCT, VASP_RUN.structures[-1])
@@ -112,7 +108,6 @@ def test_set_upper_lower_bands(self):
         assert self.loader_sp_dn.ebands.shape == (14, 198)
 
 
-@pytest.mark.skipif(not BOLTZTRAP2_PRESENT, reason="No boltztrap2, skipping tests.")
 class TestVasprunLoader(TestCase):
     def setUp(self):
         self.loader = VasprunLoader(VASP_RUN)
@@ -132,7 +127,6 @@ def test_from_file(self):
         assert self.loader is not None
 
 
-@pytest.mark.skipif(not BOLTZTRAP2_PRESENT, reason="No boltztrap2, skipping tests.")
 class TestBztInterpolator(TestCase):
     def setUp(self):
         self.loader = VasprunBSLoader(VASP_RUN)
@@ -210,7 +204,6 @@ def test_tot_proj_dos(self):
         assert pdos == approx(272.194174, abs=1e-5)
 
 
-@pytest.mark.skipif(not BOLTZTRAP2_PRESENT, reason="No boltztrap2, skipping tests.")
 class TestBztTransportProperties(TestCase):
     def setUp(self):
         with ScratchDir("."):
@@ -328,7 +321,6 @@ def test_compute_properties_doping(self):
             assert self.bztTransp_sp.contain_props_doping
 
 
-@pytest.mark.skipif(not BOLTZTRAP2_PRESENT, reason="No boltztrap2, skipping tests.")
 class TestBztPlotter:
     def test_plot(self):
         loader = VasprunBSLoader(VASP_RUN)