TW-1300

- TW-1300 _get could use return codes (thanks to Scott Kostyshak).

ChangeLog

@@ -35,6 +35,7 @@
           Wilk).
 - TW-1296 make test/run_all exit with non-zero code if a test fail (thanks to
           Jakub Wilk).
+- TW-1300 _get could use return codes (thanks to Scott Kostyshak).
 - TW-1301 Virtual tag +PENDING (thanks to Profpatsch).
 - TW-1302 CmdShow.cpp:244: bad length in substr ? (thanks to David Binderman).
 - Removed deprecated 'echo.command' setting, in favor of the 'header' and

NEWS

@@ -6,6 +6,7 @@ New Features in taskwarrior 2.4.0
   - Portuguese (por-PRT) localization.
   - Better handling for deletion of recurring tasks.
   - New virtual tags: YESTERDAY, TOMORROW, READY, PENDING, COMPLETED, DELETED.
+  - The '_get' command properly uses exit codes.
 
 New commands in taskwarrior 2.4.0
 

doc/man/task.1.in

@@ -537,6 +537,9 @@ from tasks, or the system.  Supported DOM references are:
 Note that the 'rc.<name>' reference may need to be escaped using '--' to prevent
 the reference from being interpreted as an override.
 
+Note that if the DOM reference is not valid, or the reference evaluates to a
+missing value, the command exits with 1.
+
 .SH ATTRIBUTES AND METADATA
 
 .TP

src/DOM.cpp

@@ -157,9 +157,9 @@ const std::string DOM::get (const std::string& name, const Task& task)
   std::string canonical;
 
   // <attr>
-       if (name == "id")                       return format (task.id);
-  else if (name == "urgency")                  return format (task.urgency_c ());
-  else if (A3::is_attribute (name, canonical)) return task.get (canonical);
+       if (task.size () && name == "id")                       return format (task.id);
+  else if (task.size () && name == "urgency")                  return format (task.urgency_c ());
+  else if (task.size () && A3::is_attribute (name, canonical)) return task.get (canonical);
 
   // <id>.<name>
   if (n.getInt (id))

src/commands/CmdGet.cpp

@@ -52,17 +52,23 @@ int CmdGet::execute (std::string& output)
   if (words.size () == 0)
     throw std::string (STRING_CMD_GET_NO_DOM);
 
+  bool found = false;
   std::vector <std::string> results;
   std::vector <std::string>::iterator word;
   for (word = words.begin (); word != words.end (); ++word)
   {
     Task t;
-    results.push_back (context.dom.get (*word, t));
+    std::string result = context.dom.get (*word, t);
+    results.push_back (result);
+
+    if (result != "" &&
+        result != *word)
+      found = true;
   }
 
   join (output, " ", results);
   output += "\n";
-  return 0;
+  return found ? 0 : 1;
 }
 
 ////////////////////////////////////////////////////////////////////////////////

test/feature.1300.t

@@ -0,0 +1,91 @@
+#!/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 BaseTestBug1300(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 TestBug1300(BaseTestBug1300):
+    def test_dom_exit_status_good(self):
+        """If the DOM recognizes a reference, it should return '0'
+        """
+        args = ["rc:bug.rc", "_get", "context.program"]
+
+        self.run_command(args, 0)
+
+    def test_dom_exit_status_bad(self):
+        """If the DOM does not recognize a reference, it should return '1'
+        """
+        args = ["rc:bug.rc", "_get", "XYZ"]
+
+        self.run_command(args, 1)
+
+    def run_command(self, args, expected_status):
+        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
+        self.assertEqual(expected_status, code,
+                         "Exit code was not ({0}), but ({0})".format(expected_status, code))
+
+
+if __name__ == "__main__":
+    from simpletap import TAPTestRunner
+    import unittest
+    unittest.main(testRunner=TAPTestRunner())
+
+# vim: ai sts=4 et sw=4