TI-40: totals.py extension script fails with an error

- Improve totals.py extension script:
- Fix display issue if tags are shorter than string 'Totals'
- Fix issue when totals.py is called on empty database
- Add tests: test_totals.t

test/test_totals.t

@@ -0,0 +1,80 @@
+#!/usr/bin/env python2.7
+# -*- coding: utf-8 -*-
+###############################################################################
+#
+# Copyright 2006 - 2017, 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 subprocess
+import unittest
+# Ensure python finds the local simpletap module
+sys.path.append(os.path.dirname(os.path.abspath(__file__)))
+
+from basetest import TestCase
+
+
+class TestTotals(TestCase):
+    def setUp(self):
+        current_dir = os.path.dirname(os.path.abspath(__file__))
+        self.process = subprocess.Popen([os.path.join(current_dir, '../ext/totals.py')],
+                                        stdin=subprocess.PIPE,
+                                        stdout=subprocess.PIPE,
+                                        stderr=subprocess.PIPE)
+
+    def test_totals_with_empty_database(self):
+        """totals extension should report error on empty database"""
+        out, err = self.process.communicate(input="color: off\ndebug: on\ntemp.report.start: \ntemp.report.end: \n\n[]")
+
+        self.assertEqual('There is no data in the database\n', out)
+        self.assertEqual('', err)
+
+    def test_totals_with_filled_database(self):
+        """totals extension should print report for filled database"""
+        out, err = self.process.communicate(input="color: off\ndebug: on\ntemp.report.start: 20160101T070000Z\ntemp.report.end: 20160101T080000Z\n\n[{\"start\":\"20160101T070000Z\",\"end\":\"20160101T080000Z\",\"tags\":[\"foo\"]}]")
+
+        self.assertEqual('\nTotal by Tag, for 2016-01-01 07:00:00 - 2016-01-01 08:00:00\n\nTag        Total\n----- ----------\nfoo      1:00:00\n      ----------\nTotal    1:00:00\n', out)
+        self.assertEqual('', err)
+
+    def test_totals_with_interval_without_tags(self):
+        """totals extension should handle interval without tags"""
+        out, err = self.process.communicate(input="color: off\ndebug: on\ntemp.report.start: 20160101T070000Z\ntemp.report.end: 20160101T080000Z\n\n[{\"start\":\"20160101T070000Z\",\"end\":\"20160101T080000Z\"}]")
+
+        self.assertEqual('\nTotal by Tag, for 2016-01-01 07:00:00 - 2016-01-01 08:00:00\n\nTag        Total\n----- ----------\n         1:00:00\n      ----------\nTotal    1:00:00\n', out)
+        self.assertEqual('', err)
+
+    def test_totals_with_interval_with_empty_tag_list(self):
+        """totals extension should handle interval with empty tag list"""
+        out, err = self.process.communicate(
+            input="color: off\ndebug: on\ntemp.report.start: 20160101T070000Z\ntemp.report.end: 20160101T080000Z\n\n[{\"start\":\"20160101T070000Z\",\"end\":\"20160101T080000Z\",\"tags\":[]}]")
+
+        self.assertEqual('\nTotal by Tag, for 2016-01-01 07:00:00 - 2016-01-01 08:00:00\n\nTag        Total\n----- ----------\n         1:00:00\n      ----------\nTotal    1:00:00\n', out)
+        self.assertEqual('', err)
+
+
+if __name__ == "__main__":
+    from simpletap import TAPTestRunner
+    unittest.main(testRunner=TAPTestRunner())
+
+# vim: ai sts=4 et sw=4 ft=python