convert tmpdir (which is a LocalPath object) to a string otherwise os.path.join will fail using Python <= 3.5 --> test_axis.py and test_group.py

Author: alixdamman

larray/tests/test_axis.py

@@ -366,7 +366,7 @@ def test_h5_io(tmpdir):
     lipro = Axis('lipro=P01..P05')
     anonymous = Axis(range(3))
     wildcard = Axis(3, 'wildcard')
-    fpath = os.path.join(tmpdir, 'axes.h5')
+    fpath = os.path.join(str(tmpdir), 'axes.h5')
 
     # ---- default behavior ----
     # int axis

larray/tests/test_group.py

@@ -136,7 +136,7 @@ def test_to_float_lgroup():
     assert float(a['42']) == 42.0
 
 def test_h5_io_lgroup(tmpdir):
-    fpath = os.path.join(tmpdir, 'lgroups.h5')
+    fpath = os.path.join(str(tmpdir), 'lgroups.h5')
     age.to_hdf(fpath)
 
     named = age[':5'] >> 'age_05'
@@ -342,7 +342,7 @@ def test_to_float_igroup():
     assert float(a.i[0]) == 42.0
 
 def test_h5_io_igroup(tmpdir):
-    fpath = os.path.join(tmpdir, 'igroups.h5')
+    fpath = os.path.join(str(tmpdir), 'igroups.h5')
     age.to_hdf(fpath)
 
     named = age.i[:6] >> 'age_05'