TST: use correct paths for starting view windows

tests/test_view_windows.py

@@ -34,40 +34,19 @@ def view_window(cmd):
     if proc.returncode != 0:
         raise RuntimeError("Running command %s failed" % cmd)
 
-
 def test_view_rast():
-    if 'SYSTEM_USER_DIR' in os.environ:
-        basedir = os.environ['SYSTEM_USER_DIR']
-    else:
-        basedir = os.path.expanduser('~')
-
-    fetch_file('spk.txt')
-    ntrials = 3
-    for trial_idx in range(ntrials):
-        fetch_file('spk_%d.txt' % trial_idx)
-
-    spike_file = os.path.join(basedir, 'spk.txt')
+    fname = 'spk.txt'
+    fetch_file(fname)
     paramf = op.join('param', 'default.param')
-    cmd = sys.executable + ' visrast.py ' + paramf + ' ' + spike_file
-
+    cmd = sys.executable + ' visrast.py ' + paramf + ' ' + fname
     view_window(cmd)
 
 
 def test_view_dipole():
-    if 'SYSTEM_USER_DIR' in os.environ:
-        basedir = os.environ['SYSTEM_USER_DIR']
-    else:
-        basedir = os.path.expanduser('~')
-
-    fetch_file('dpl.txt')
-    ntrials = 3
-    for trial_idx in range(ntrials):
-        fetch_file('dpl_%d.txt' % trial_idx)
-
-    dipole_file = os.path.join(basedir, 'dpl.txt')
+    fname = 'dpl.txt'
+    fetch_file(fname)
     paramf = op.join('param', 'default.param')
-    cmd = sys.executable + ' visdipole.py ' + paramf + ' ' + dipole_file
-
+    cmd = sys.executable + ' visdipole.py ' + paramf + ' ' + fname
     view_window(cmd)