Sorting tasks by date.

test/tc_sort_date.vim

@@ -0,0 +1,18 @@
+let s:here = expand('<sfile>:p:h')
+let s:tc = unittest#testcase#new('Sort Date', 
+      \ { 'data': s:here . '/tc_sort_date.todo.txt' })
+
+let s:LEADER = mapleader
+
+let s:SORTED_TASKS = [
+      \ '(B) 2013-03-16 2013-03-10',
+      \ '(B) 2013-03-15 2015-03-17',
+      \ '(A) 2012-04-16 2015-04-16',
+      \ ]
+
+function! s:tc.test_sort_by_context()
+  call self.data.visual_execute('call TodoTxtSortByDate()', 'lorem_ipsum')
+  call self.assert_equal(s:SORTED_TASKS, self.data.get('lorem_ipsum'))
+endfunction
+
+unlet s:tc