ensure testing is only done in the test folder

when testing in all folders, all code is initiated. When matlab is not available, it gives an error.

Author: oliverchampion

.gitignore

@@ -20,7 +20,9 @@ md5sums.txt
 src/original/ASD_MemorialSloanKettering/MRI-QAMPER_IVIM/test_data
 src/original/ASD_MemorialSloanKettering/MRI-QAMPER_IVIM/output_files
 tests/IVIMmodels/unit_tests/*.log
-
+junit/*
+ivim_simulation.bval
+ivim_simulation.bvec
 
 # Unit test / coverage reports
 .tox/

pytest.ini

@@ -2,4 +2,5 @@
 markers =
     slow: marks tests as slow (deselect with '-m "not slow"')
 addopts =  
-    -m 'not slow'
+    -m 'not slow'
+testpaths = tests