Unit Tests TW-1254

- Added unit tests for TW-1254.

Signed-off-by: Paul Beckingham <paul@beckingham.net>

test/bug.1254.t

@@ -0,0 +1,93 @@
+#!/usr/bin/env python2.7
+# -*- coding: utf-8 -*-
+################################################################################
+##
+## Copyright 2006 - 2014, Paul Beckingham, Federico Hernandez.
+##
+## Permission is hereby granted, free of charge, to any person obtaining a copy
+## of this software and associated documentation files (the "Software"), to deal
+## in the Software without restriction, including without limitation the rights
+## to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+## copies of the Software, and to permit persons to whom the Software is
+## furnished to do so, subject to the following conditions:
+##
+## The above copyright notice and this permission notice shall be included
+## in all copies or substantial portions of the Software.
+##
+## THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+## OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+## FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+## THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+## LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+## OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+## SOFTWARE.
+##
+## http://www.opensource.org/licenses/mit-license.php
+##
+################################################################################
+
+import sys
+import os
+import signal
+from glob import glob
+# Ensure python finds the local simpletap and basetest modules
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from basetest import BaseTestCase
+
+
+class BaseTestBug1254(BaseTestCase):
+    @classmethod
+    def prepare(cls):
+        with open("bug.rc", 'w') as fh:
+            fh.write("data.location=.\n"
+                     "confirmation=no\n")
+
+    def tearDown(self):
+        """Needed after each test or setUp will cause duplicated data at start
+        of the next test.
+        """
+        for file in glob("*.data"):
+            os.remove(file)
+
+    @classmethod
+    def cleanup(cls):
+        os.remove("bug.rc")
+
+
+class TestBug1254(BaseTestBug1254):
+    def test_no_segmentation_fault_calc_negative_multiplication(self):
+        """calc can multiply zero and negative numbers
+        """
+        args = ["rc:bug.rc", "calc", "0*-1"]
+
+        self.run_command(args)
+
+    def test_calc_positive_multiplication(self):
+        """calc can multiply negative zero and positive
+        """
+
+        args = ["rc:bug.rc", "calc", "0*1"]
+
+        self.run_command(args)
+
+    def run_command(self, args):
+        code, out, err = self.callTask(args)
+
+        # We shouldn't get a segmentation fault
+        # (negative exit code == 128 - real_exit_code)
+        expected = -signal.SIGSEGV
+        self.assertNotEqual(expected, code, "Task segfaulted")
+
+        # Instead we expect a clean exit
+        expected = 0
+        self.assertEqual(expected, code,
+                         "Exit code was non-zero ({0})".format(code))
+
+
+if __name__ == "__main__":
+    from simpletap import TAPTestRunner
+    import unittest
+    unittest.main(testRunner=TAPTestRunner())
+
+# vim: ai sts=4 et sw=4