Bug 783727 - Part 4: Add psutil Python package; r=glandium

Version 0.6.1 obtained from
https://psutil.googlecode.com/files/psutil-0.6.1.tar.gz

python/psutil/test/_osx.py

@@ -0,0 +1,154 @@
+#!/usr/bin/env python
+#
+# $Id: _osx.py 1498 2012-07-24 21:41:28Z g.rodola $
+#
+# Copyright (c) 2009, Jay Loden, Giampaolo Rodola'. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+"""OSX specific tests.  These are implicitly run by test_psutil.py."""
+
+import unittest
+import subprocess
+import time
+import sys
+import os
+import re
+
+import psutil
+
+from psutil._compat import PY3
+from test_psutil import reap_children, get_test_subprocess, sh
+
+
+PAGESIZE = os.sysconf("SC_PAGE_SIZE")
+TOLERANCE = 200 * 1024  # 200 KB
+
+
+def sysctl(cmdline):
+    """Expects a sysctl command with an argument and parse the result
+    returning only the value of interest.
+    """
+    p = subprocess.Popen(cmdline, shell=1, stdout=subprocess.PIPE)
+    result = p.communicate()[0].strip().split()[1]
+    if PY3:
+        result = str(result, sys.stdout.encoding)
+    try:
+        return int(result)
+    except ValueError:
+        return result
+
+def vm_stat(field):
+    """Wrapper around 'vm_stat' cmdline utility."""
+    out = sh('vm_stat')
+    for line in out.split('\n'):
+        if field in line:
+            break
+    else:
+        raise ValueError("line not found")
+    return int(re.search('\d+', line).group(0)) * PAGESIZE
+
+
+class OSXSpecificTestCase(unittest.TestCase):
+
+    def setUp(self):
+        self.pid = get_test_subprocess().pid
+
+    def tearDown(self):
+        reap_children()
+
+    def assert_eq_w_tol(self, first, second, tolerance):
+        difference = abs(first - second)
+        if difference <= tolerance:
+            return
+        msg = '%r != %r within %r delta (%r difference)' \
+              % (first, second, tolerance, difference)
+        raise AssertionError(msg)
+
+    def test_process_create_time(self):
+        cmdline = "ps -o lstart -p %s" %self.pid
+        p = subprocess.Popen(cmdline, shell=1, stdout=subprocess.PIPE)
+        output = p.communicate()[0]
+        if PY3:
+            output = str(output, sys.stdout.encoding)
+        start_ps = output.replace('STARTED', '').strip()
+        start_psutil = psutil.Process(self.pid).create_time
+        start_psutil = time.strftime("%a %b %e %H:%M:%S %Y",
+                                     time.localtime(start_psutil))
+        self.assertEqual(start_ps, start_psutil)
+
+    def test_disks(self):
+        # test psutil.disk_usage() and psutil.disk_partitions()
+        # against "df -a"
+        def df(path):
+            out = sh('df -k "%s"' % path).strip()
+            lines = out.split('\n')
+            lines.pop(0)
+            line = lines.pop(0)
+            dev, total, used, free = line.split()[:4]
+            if dev == 'none':
+                dev = ''
+            total = int(total) * 1024
+            used = int(used) * 1024
+            free = int(free) * 1024
+            return dev, total, used, free
+
+        for part in psutil.disk_partitions(all=False):
+            usage = psutil.disk_usage(part.mountpoint)
+            dev, total, used, free = df(part.mountpoint)
+            self.assertEqual(part.device, dev)
+            self.assertEqual(usage.total, total)
+            # 10 MB tollerance
+            if abs(usage.free - free) > 10 * 1024 * 1024:
+                self.fail("psutil=%s, df=%s" % usage.free, free)
+            if abs(usage.used - used) > 10 * 1024 * 1024:
+                self.fail("psutil=%s, df=%s" % usage.used, used)
+
+    # --- virtual mem
+
+    def test_vmem_total(self):
+        sysctl_hwphymem = sysctl('sysctl hw.memsize')
+        self.assertEqual(sysctl_hwphymem, psutil.TOTAL_PHYMEM)
+
+    def test_vmem_free(self):
+        num = vm_stat("free")
+        self.assert_eq_w_tol(psutil.virtual_memory().free, num, TOLERANCE)
+
+    def test_vmem_active(self):
+        num = vm_stat("active")
+        self.assert_eq_w_tol(psutil.virtual_memory().active, num, TOLERANCE)
+
+    def test_vmem_inactive(self):
+        num = vm_stat("inactive")
+        self.assert_eq_w_tol(psutil.virtual_memory().inactive, num, TOLERANCE)
+
+    def test_vmem_wired(self):
+        num = vm_stat("wired")
+        self.assert_eq_w_tol(psutil.virtual_memory().wired, num, TOLERANCE)
+
+    # --- swap mem
+
+    def test_swapmem_sin(self):
+        num = vm_stat("Pageins")
+        self.assertEqual(psutil.swap_memory().sin, num)
+
+    def test_swapmem_sout(self):
+        num = vm_stat("Pageouts")
+        self.assertEqual(psutil.swap_memory().sout, num)
+
+    def test_swapmem_total(self):
+        tot1 = psutil.swap_memory().total
+        tot2 = 0
+        # OSX uses multiple cache files:
+        # http://en.wikipedia.org/wiki/Paging#OS_X
+        for name in os.listdir("/var/vm/"):
+            file = os.path.join("/var/vm", name)
+            if os.path.isfile(file):
+                tot2 += os.path.getsize(file)
+        self.assertEqual(tot1, tot2)
+
+
+if __name__ == '__main__':
+    test_suite = unittest.TestSuite()
+    test_suite.addTest(unittest.makeSuite(OSXSpecificTestCase))
+    unittest.TextTestRunner(verbosity=2).run(test_suite)