increase test coverage

5 files changed, 9 insertions, 6 deletions

diff --git a/psutil/__init__.py b/psutil/__init__.py
index 9d43f991..2108a40e 100644
--- a/psutil/__init__.py
+++ b/psutil/__init__.py
@@ -264,7 +264,7 @@ if (int(__version__.replace('.', '')) !=
 if hasattr(_psplatform, 'ppid_map'):
     # Faster version (Windows and Linux).
     _ppid_map = _psplatform.ppid_map
-else:
+else:  # pragma: no cover
     def _ppid_map():
         """Return a {pid: ppid, ...} dict for all running processes in
         one shot. Used to speed up Process.children().
@@ -393,7 +393,7 @@ class Process(object):
     def __str__(self):
         try:
             info = collections.OrderedDict()
-        except AttributeError:
+        except AttributeError:  # pragma: no cover
             info = {}  # Python 2.6
         info["pid"] = self.pid
         if self._name:
diff --git a/psutil/_common.py b/psutil/_common.py
index 74366456..0ddb5f9c 100644
--- a/psutil/_common.py
+++ b/psutil/_common.py
@@ -799,7 +799,8 @@ def hilite(s, color=None, bold=False):
     return '\x1b[%sm%s\x1b[0m' % (';'.join(attr), s)
 
 
-def print_color(s, color=None, bold=False, file=sys.stdout):
+def print_color(
+        s, color=None, bold=False, file=sys.stdout):  # pragma: no cover
     """Print a colorized version of string."""
     if not term_supports_colors():
         print(s, file=file)  # NOQA
diff --git a/psutil/_pslinux.py b/psutil/_pslinux.py
index 3c9ff281..382a17fa 100644
--- a/psutil/_pslinux.py
+++ b/psutil/_pslinux.py
@@ -307,7 +307,7 @@ def cat(fname, fallback=_DEFAULT, binary=True):
 
 try:
     set_scputimes_ntuple("/proc")
-except Exception:
+except Exception:  # pragma: no cover
     # Don't want to crash at import time.
     traceback.print_exc()
     scputimes = namedtuple('scputimes', 'user system idle')(0.0, 0.0, 0.0)
diff --git a/psutil/_psposix.py b/psutil/_psposix.py
index 2e6711a3..706dab9a 100644
--- a/psutil/_psposix.py
+++ b/psutil/_psposix.py
@@ -65,7 +65,7 @@ if enum is not None and hasattr(signal, "Signals"):
             return Negsignal(num)
         except ValueError:
             return num
-else:
+else:  # pragma: no cover
     def negsig_to_enum(num):
         return num
 
@@ -167,7 +167,7 @@ def disk_usage(path):
     """
     if PY3:
         st = os.statvfs(path)
-    else:
+    else:  # pragma: no cover
         # os.statvfs() does not support unicode on Python 2:
         # - https://github.com/giampaolo/psutil/issues/416
         # - http://bugs.python.org/issue18695
diff --git a/psutil/tests/test_system.py b/psutil/tests/test_system.py
index e368ea76..787397ad 100755
--- a/psutil/tests/test_system.py
+++ b/psutil/tests/test_system.py
@@ -483,6 +483,8 @@ class TestCpuAPIs(PsutilTestCase):
                 self._test_cpu_percent(percent, last, new)
             self._test_cpu_percent(sum(new), last, new)
             last = new
+        with self.assertRaises(ValueError):
+            psutil.cpu_times_percent(interval=-1)
 
     def test_per_cpu_times_percent(self):
         last = psutil.cpu_times_percent(interval=0.001, percpu=True)