Add tests for Todo class.

test/TodoTest.py

+import datetime
+import unittest
+
+import Todo
+
+def today_date():
+    date = datetime.date.today()
+    return date.isoformat()
+
+def tomorrow_date():
+    date = datetime.date.today() + datetime.timedelta(days=1)
+    return date.isoformat()
+
+class TodoTest(unittest.TestCase):
+    def test_due_date1(self):
+        todo = Todo.Todo("(C) Foo due:2014-06-09")
+        date = datetime.date(2014, 6, 9)
+
+        self.assertEqual(todo.due_date(), date)
+
+    def test_false_date(self):
+        todo = Todo.Todo("(C) Foo due:2014-04-31")
+        self.assertEqual( todo.due_date(), None )
+
+    def test_active1(self):
+        todo = Todo.Todo("(C) Foo due:2014-01-01")
+        self.assertTrue(todo.is_active())
+
+    def test_active2(self):
+        todo = Todo.Todo("(C) Foo t:" + tomorrow_date())
+        self.assertFalse(todo.is_active())
+
+    def test_active3(self):
+        todo = Todo.Todo("x 2014-06-09 Foo t:2014-01-01")
+        self.assertFalse(todo.is_active())
+
+    def test_active4(self):
+        todo = Todo.Todo("(C) Foo t:" + today_date())
+        self.assertTrue(todo.is_active())
+
+    def test_active5(self):
+        todo = Todo.Todo("(C) Foo t:2014-02-29")
+        self.assertTrue(todo.is_active())
+
+    def test_overdue1(self):
+        todo = Todo.Todo("(C) Foo due:2014-01-01")
+        self.assertTrue(todo.is_overdue())
+
+    def test_overdue2(self):
+        todo = Todo.Todo("(C) Foo due:" + tomorrow_date())
+        self.assertFalse(todo.is_overdue())
+
+    def test_overdue3(self):
+        todo = Todo.Todo("(C) Foo due:" + today_date())
+        self.assertFalse(todo.is_overdue())
+
+    def days_till_due(self):
+        todo = Todo.Todo("(C) due:" + tomorrow_date())
+        self.assertEqual(todo.days_till_due(), 1)
+
+    def test_length1(self):
+        todo = Todo.Todo("(C) Foo t:2014-01-01 due:2013-12-31")
+        self.assertEqual(todo.length(), 0)
+
+    def test_length2(self):
+        todo = Todo.Todo("(C) Foo t:2014-01-01 due:2014-01-01")
+        self.assertEqual(todo.length(), 0)
+
+    def test_length3(self):
+        todo = Todo.Todo("(C) Foo t:2014-01-01 due:2014-01-02")
+        self.assertEqual(todo.length(), 1)