Add 'yesterday' as a relative date

test/test_relative_date.py

@@ -26,6 +26,7 @@ from topydo.lib.RelativeDate import relative_date_to_date
 class RelativeDateTester(TopydoTest):
     def setUp(self):
         super(RelativeDateTester, self).setUp()
+        self.yesterday = date(2015, 11, 5)
         self.today = date(2015, 11, 6)
         self.tomorrow = date(2015, 11, 7)
         self.monday = date(2015, 11, 9)
@@ -115,6 +116,14 @@ class RelativeDateTester(TopydoTest):
         result = relative_date_to_date('tom')
         self.assertEqual(result, self.tomorrow)
 
+    def test_yesterday1(self):
+        result = relative_date_to_date('yesterday')
+        self.assertEqual(result, self.yesterday)
+
+    def test_yesterday2(self):
+        result = relative_date_to_date('yes')
+        self.assertEqual(result, self.yesterday)
+
     def test_monday1(self):
         result = relative_date_to_date('monday')
         self.assertEqual(result, self.monday)

topydo/lib/RelativeDate.py

@@ -91,7 +91,7 @@ def relative_date_to_date(p_date, p_offset=None):
     The following formats are understood:
 
     * [0-9][dwmy]
-    * 'today' or 'tomorrow'
+    * 'yesterday', 'today' or 'tomorrow'
     * days of the week (in full or abbreviated)
     """
     result = None
@@ -126,4 +126,7 @@ def relative_date_to_date(p_date, p_offset=None):
     elif re.match('tom(orrow)?$', p_date):
         result = _convert_pattern('1', 'd')
 
+    elif re.match('yes(terday)?$', p_date):
+        result = _convert_pattern('-1', 'd')
+
     return result