ftests: Add cgset invalid options test

Add a test that tests various invalid flag combinations to cgset.

-----------------------------------------------------------------
Test Results:
        Run Date:                          Mar 08 17:39:20
        Passed:                                  1 test(s)
        Skipped:                                 0 test(s)
        Failed:                                  0 test(s)
-----------------------------------------------------------------
Timing Results:
        Test                                    Time (sec)
        ---------------------------------------------------------
        setup                                        18.15
        027-cgset-invalid_options.py                  0.94
        teardown                                      0.00
        ---------------------------------------------------------
        Total Run Time                               19.09

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

diff --git a/ftests/027-cgset-invalid_options.py b/ftests/027-cgset-invalid_options.py
new file mode 100755 (executable)
index 0000000..e7c88f0
--- /dev/null
+++ b/ftests/027-cgset-invalid_options.py
@@ -0,0 +1,167 @@
+#!/usr/bin/env python3
+#
+# Advanced cgset functionality test - invalid options
+#
+# 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, CgroupVersion
+import consts
+import ftests
+import os
+from run import RunError
+import sys
+
+CONTROLLER = 'cpu'
+CGNAME1 = '027cgset1'
+CGNAME2 = '027cgset2'
+
+def prereqs(config):
+    result = consts.TEST_PASSED
+    cause = None
+
+    return result, cause
+
+def setup(config):
+    Cgroup.create(config, CONTROLLER, CGNAME1)
+    Cgroup.create(config, CONTROLLER, CGNAME2)
+
+def test(config):
+    result = consts.TEST_PASSED
+    cause = None
+
+    try:
+        # cgset -r cpu.shares=100 --copy-from 027cgset2 027cgset1
+        Cgroup.set(config, cgname=CGNAME1, setting="cpu.shares", value="100",
+                   copy_from=CGNAME2)
+    except RunError as re:
+        if not "Wrong input parameters," in re.stderr:
+            result = consts.TEST_FAILED
+            cause = "#1 Expected 'Wrong input parameters' to be in stderr"
+            return result, cause
+
+        if re.ret != 255:
+            result = consts.TEST_FAILED
+            cause = "#1 Expected return code of 255 but received {}".format(re.ret)
+            return result, cause
+    else:
+        result = consts.TEST_FAILED
+        cause = "Test case #1 erroneously passed"
+        return result, cause
+
+    try:
+        # cgset -r cpu.shares=100
+        Cgroup.set(config, cgname=None, setting="cpu.shares", value="100")
+    except RunError as re:
+        if not "cgset: no cgroup specified" in re.stderr:
+            result = consts.TEST_FAILED
+            cause = "#2 Expected 'no cgroup specified' to be in stderr"
+            return result, cause
+
+        if re.ret != 255:
+            result = consts.TEST_FAILED
+            cause = "#2 Expected return code of 255 but received {}".format(re.ret)
+            return result, cause
+    else:
+        result = consts.TEST_FAILED
+        cause = "Test case #2 erroneously passed"
+        return result, cause
+
+    try:
+        # cgset 027cgset1
+        Cgroup.set(config, cgname=CGNAME1)
+    except RunError as re:
+        if not "cgset: no name-value pair was set" in re.stderr:
+            result = consts.TEST_FAILED
+            cause = "#3 Expected 'no name-value pair' to be in stderr"
+            return result, cause
+
+        if re.ret != 255:
+            result = consts.TEST_FAILED
+            cause = "#3 Expected return code of 255 but received {}".format(re.ret)
+            return result, cause
+    else:
+        result = consts.TEST_FAILED
+        cause = "Test case #3 erroneously passed"
+        return result, cause
+
+    try:
+        # cgset - no flags provided
+        Cgroup.set(config)
+    except RunError as re:
+        if not "Usage is" in re.stderr:
+            result = consts.TEST_FAILED
+            cause = "#4 Expected 'Usage is' to be in stderr"
+            return result, cause
+
+        if re.ret != 255:
+            result = consts.TEST_FAILED
+            cause = "#4 Expected return code of 255 but received {}".format(re.ret)
+            return result, cause
+    else:
+        result = consts.TEST_FAILED
+        cause = "Test case #4 erroneously passed"
+        return result, cause
+
+    try:
+        # cgset -r cpu.shares= 027cgset1
+        Cgroup.set(config, cgname=CGNAME1, setting="cpu.shares", value="")
+    except RunError as re:
+        if not "wrong parameter of option -r" in re.stderr:
+            result = consts.TEST_FAILED
+            cause = "#5 Expected 'Wrong parameter of option' to be in stderr"
+            return result, cause
+
+        if re.ret != 255:
+            result = consts.TEST_FAILED
+            cause = "#5 Expected return code of 255 but received {}".format(re.ret)
+            return result, cause
+    else:
+        result = consts.TEST_FAILED
+        cause = "Test case #5 erroneously passed"
+        return result, cause
+
+    # cgset -h
+    ret = Cgroup.set(config, cghelp=True)
+    if not "Usage:" in ret:
+        result = consts.TEST_FAILED
+        cause = "#6 Failed to print help text"
+        return result, cause
+
+    return result, cause
+
+def teardown(config):
+    Cgroup.delete(config, CONTROLLER, CGNAME1)
+    Cgroup.delete(config, CONTROLLER, CGNAME2)
+
+def main(config):
+    [result, cause] = prereqs(config)
+    if result != consts.TEST_PASSED:
+        return [result, cause]
+
+    setup(config)
+    [result, cause] = test(config)
+    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))