ftests: Add a simple cgclear functional test

Add a test that invokes cgclear.  Note that this test is especially
destructive and is skipped by default.  Github Actions invokes it
separately as the final step.

-----------------------------------------------------------------
Test Results:
	Run Date:                          Mar 23 16:07:55
	Passed:                                  1 test(s)
	Skipped:                                 0 test(s)
	Failed:                                  0 test(s)
-----------------------------------------------------------------
Timing Results:
	Test                                    Time (sec)
	---------------------------------------------------------
	setup                                         0.00
	028-cgclear-basic_cgclear.py                  1.80
	teardown                                      0.00
	---------------------------------------------------------
	Total Run Time                                1.80

Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>

diff --git a/ftests/028-cgclear-basic_cgclear.py b/ftests/028-cgclear-basic_cgclear.py
new file mode 100755 (executable)
index 0000000..ca290a9
--- /dev/null
+++ b/ftests/028-cgclear-basic_cgclear.py
@@ -0,0 +1,88 @@
+#!/usr/bin/env python3
+#
+# Basic cgclear functionality test
+#
+# Copyright (c) 2021 Oracle and/or its affiliates.
+# Author: Tom Hromatka <tom.hromatka@oracle.com>
+#
+
+#
+# This library is free software; you can redistribute it and/or modify it
+# under the terms of version 2.1 of the GNU Lesser General Public License as
+# published by the Free Software Foundation.
+#
+# This library is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License
+# for more details.
+#
+# You should have received a copy of the GNU Lesser General Public License
+# along with this library; if not, see <http://www.gnu.org/licenses>.
+#
+
+from cgroup import Cgroup
+import consts
+import ftests
+import os
+from process import Process
+from run import Run
+import sys
+
+def prereqs(config):
+    result = consts.TEST_PASSED
+    cause = None
+
+    if config.args.container:
+        result = consts.TEST_SKIPPED
+        cause = "This test is highly destructive to the cgroup hierarchy and\n" \
+                "does not have the necessary permissions within a container."
+        return result, cause
+
+    return result, cause
+
+def setup(config):
+    pass
+
+def test(config):
+    result = consts.TEST_PASSED
+    cause = None
+
+    ret = Cgroup.clear(config, cghelp=True)
+    if not "Usage:" in ret:
+        result = consts.TEST_FAILED
+        cause = "Failed to print help text"
+        return result, cause
+
+    before = Run.run('mount | wc -l', shell_bool=True)
+    Cgroup.clear(config)
+    after = Run.run('mount | wc -l', shell_bool=True)
+
+    if after >= before:
+        result = consts.TEST_FAILED
+        cause = "Cgroups were not unmounted.\n" \
+                "Before count {}, after count {}".format(before, after)
+        return result, cause
+
+    return result, cause
+
+def teardown(config):
+    pass
+
+def main(config):
+    [result, cause] = prereqs(config)
+    if result != consts.TEST_PASSED:
+        return [result, cause]
+
+    try:
+        setup(config)
+        [result, cause] = test(config)
+    finally:
+        teardown(config)
+
+    return [result, cause]
+
+if __name__ == '__main__':
+    config = ftests.parse_args()
+    # this test was invoked directly.  run only it
+    config.args.num = int(os.path.basename(__file__).split('-')[0])
+    sys.exit(ftests.main(config))

diff --git a/ftests/ftests-nocontainer.sh b/ftests/ftests-nocontainer.sh
index 70d27e163f3f8a3e73cbb1034969a145b066a1fe..4725fede2d54b56e91f42e2d4b1b0cda2335a127 100755 (executable)
--- a/ftests/ftests-nocontainer.sh
+++ b/ftests/ftests-nocontainer.sh
@@ -1,2 +1,2 @@
 #!/bin/bash
-./ftests.py -l 10 -L ftests-nocontainer.log --no-container
+./ftests.py -l 10 -L ftests-nocontainer.log --skip 28 --no-container