Included Guilherme Victal works on overduedate

See https://github.com/freitass/todo.txt-vim/pull/45

test/tc_date.todo.txt

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+# lorem_ipsum
+example task
+# end_lorem_ipsum
+
+# date_after_priority
+(A) Call Mom
+# end_date_after_priority
+
+# date_after_priority_visual
+(A) Call Mom
+(B) Call Dad
+# end_date_after_priority_visual
+
+# existing_date_no_priority
+2014-05-06 example task
+# end_existing_date_no_priority
+
+# existing_date_after_priority
+(A) 2014-05-06 Call Mom
+# end_existing_date_after_priority
+
+# existing_date_do_nothing
+2014-05-06 example task
+# end_existing_date_do_nothing
+
+# non_existing_date_do_nothing
+new todo line
+# end_non_existing_date_do_nothing

test/tc_date.vim

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+let s:here = expand('<sfile>:p:h')
+let s:context = todo#txt#__context__()
+let s:context['data'] = s:here . '/tc_date.todo.txt'
+let s:tc = unittest#testcase#new('Date', s:context)
+
+let s:TODAY = strftime("%Y-%m-%d")
+
+function! s:tc.test_current_date()
+  call self.assert_equal(s:TODAY, self.call('s:get_current_date', []))
+endfunction
+
+let s:DATE_INSERTED = [
+      \ s:TODAY . ' example task',
+      \ ]
+
+let s:DATE_INSERTED_AFTER_PRIORITY = [
+      \ '(A) ' . s:TODAY . ' Call Mom',
+      \ ]
+
+let s:DATE_INSERTED_AFTER_PRIORITY_VISUAL = [
+      \ '(A) ' . s:TODAY . ' Call Mom',
+      \ '(B) ' . s:TODAY . ' Call Dad',
+      \ ]
+
+let s:DATE_INSERTED_DO_NOTHING = [
+      \ '2014-05-06 example task',
+      \ ]
+
+let s:NON_EXISTING_DATE_INSERTED_DO_NOTHING = [
+      \ s:TODAY . ' new todo line',
+      \ ]
+
+function! s:tc.test_insert_date_normal_mode()
+  call self.data.goto('lorem_ipsum')
+  call todo#txt#replace_date()
+  call self.assert_equal(s:DATE_INSERTED, self.data.get('lorem_ipsum'))
+endfunction
+
+function! s:tc.test_insert_date_insert_mode()
+  call self.data.goto('lorem_ipsum')
+  execute 'normal idate	 '
+  call self.assert_equal(s:DATE_INSERTED, self.data.get('lorem_ipsum'))
+endfunction
+
+function! s:tc.test_insert_date_visual_mode()
+  call self.data.visual_execute('call todo#txt#replace_date()', 'lorem_ipsum')
+  call self.assert_equal(s:DATE_INSERTED, self.data.get('lorem_ipsum'))
+endfunction
+
+function! s:tc.test_insert_date_after_priority_normal_mode()
+  call self.data.execute('call todo#txt#replace_date()', 'date_after_priority')
+  call self.assert_equal(s:DATE_INSERTED_AFTER_PRIORITY, self.data.get('date_after_priority'))
+endfunction
+
+function! s:tc.test_insert_date_after_priority_visual_mode()
+  call self.data.visual_execute('call todo#txt#replace_date()', 'date_after_priority_visual')
+  call self.assert_equal(s:DATE_INSERTED_AFTER_PRIORITY_VISUAL, self.data.get('date_after_priority_visual'))
+endfunction
+
+function! s:tc.test_insert_with_existing_date()
+  call self.data.execute('call todo#txt#replace_date()', 'existing_date_no_priority')
+  call self.assert_equal(s:DATE_INSERTED, self.data.get('existing_date_no_priority'))
+endfunction
+
+function! s:tc.test_insert_with_existing_date_and_priority()
+  call self.data.execute('call todo#txt#replace_date()', 'existing_date_after_priority')
+  call self.assert_equal(s:DATE_INSERTED_AFTER_PRIORITY, self.data.get('existing_date_after_priority'))
+endfunction
+
+function! s:tc.test_insert_with_existing_date_and_priority()
+  let g:todo_existing_date = 'n'
+  call self.data.execute('call todo#txt#replace_date()', 'existing_date_do_nothing')
+  call self.assert_equal(s:DATE_INSERTED_DO_NOTHING, self.data.get('existing_date_do_nothing'))
+  unlet g:todo_existing_date
+endfunction
+
+function! s:tc.test_insert_with_existing_date_and_priority()
+  let g:todo_existing_date = 'n'
+  call self.data.execute('call todo#txt#replace_date()', 'non_existing_date_do_nothing')
+  call self.assert_equal(s:NON_EXISTING_DATE_INSERTED_DO_NOTHING, self.data.get('non_existing_date_do_nothing'))
+  unlet g:todo_existing_date
+endfunction
+
+unlet s:tc

test/tc_mark_as_done.todo.txt

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+# lorem_ipsum
+first task to be marked as done
+second task to be marked as done
+2015-05-20 third task to be marked as done
+# end_lorem_ipsum

test/tc_mark_as_done.vim

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+let s:here = expand('<sfile>:p:h')
+let s:context = todo#txt#__context__()
+let s:context['data'] = s:here . '/tc_mark_as_done.todo.txt'
+let s:tc = unittest#testcase#new('Mark As Done', s:context)
+
+let s:TODAY = strftime("%Y-%m-%d")
+
+let s:FIRST_TASK_DONE = [
+      \ 'x ' . s:TODAY . ' first task to be marked as done',
+      \ 'second task to be marked as done',
+      \ '2015-05-20 third task to be marked as done',
+      \ ]
+
+let s:ALL_TASKS_DONE = [
+      \ 'x ' . s:TODAY . ' first task to be marked as done',
+      \ 'x ' . s:TODAY . ' second task to be marked as done',
+      \ 'x ' . s:TODAY . ' 2015-05-20 third task to be marked as done',
+      \ ]
+
+function! s:tc.test_mark_as_done()
+  call self.data.goto('lorem_ipsum')
+  call todo#txt#mark_as_done()
+  call self.assert_equal(s:FIRST_TASK_DONE, self.data.get('lorem_ipsum'))
+endfunction
+
+function! s:tc.test_mark_range_as_done()
+  call self.data.execute('call todo#txt#mark_as_done()', 'lorem_ipsum')
+  call self.assert_equal(s:ALL_TASKS_DONE, self.data.get('lorem_ipsum'))
+endfunction
+
+function! s:tc.test_mark_selection_as_done()
+  call self.data.visual_execute('call todo#txt#mark_as_done()', 'lorem_ipsum')
+  call self.assert_equal(s:ALL_TASKS_DONE, self.data.get('lorem_ipsum'))
+endfunction
+
+unlet s:tc

test/tc_priority.todo.txt

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+# insert_priority
+example task
+# end_insert_priority
+
+# replace_priority
+(A) example task
+# end_replace_priority

test/tc_priority.vim

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+let s:here = expand('<sfile>:p:h')
+let s:context = todo#txt#__context__()
+let s:context['data'] = s:here . '/tc_priority.todo.txt'
+let s:tc = unittest#testcase#new('Priority', s:context)
+
+let s:TODAY = strftime("%Y-%m-%d")
+
+let s:PRIORITY_INSERTED = [
+      \ '(A) example task',
+      \ ]
+
+let s:PRIORITY_REPLACED = [
+      \ '(C) example task',
+      \ ]
+
+function! s:tc.test_insert_priority()
+  call self.data.goto('insert_priority')
+  call todo#txt#prioritize_add('A')
+  call self.assert_equal(s:PRIORITY_INSERTED, self.data.get('insert_priority'))
+endfunction
+
+function! s:tc.test_replace_priority()
+  call self.data.goto('replace_priority')
+  call todo#txt#prioritize_add('C')
+  call self.assert_equal(s:PRIORITY_REPLACED, self.data.get('replace_priority'))
+endfunction
+
+unlet s:tc

test/tc_sort_context.todo.txt

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+# lorem_ipsum
+(B) Linear regression Rnet=Qh@Qle. @cons_emp_model
+(B) Review key questions. @benchmarking
+(A) simple model first @cons_emp_model
+# end_lorem_ipsum

test/tc_sort_context.vim

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+let s:here = expand('<sfile>:p:h')
+let s:tc = unittest#testcase#new('Sort Context', 
+      \ { 'data': s:here . '/tc_sort_context.todo.txt' })
+
+let s:LEADER = mapleader
+
+let s:SORTED_TASKS = [
+      \ '(B) Review key questions. @benchmarking',
+      \ '(B) Linear regression Rnet=Qh@Qle. @cons_emp_model',
+      \ '(A) simple model first @cons_emp_model',
+      \ ]
+
+function! s:tc.test_sort_by_context()
+  call self.data.visual_execute('call todo#txt#sort_by_context()', 'lorem_ipsum')
+  call self.assert_equal(s:SORTED_TASKS, self.data.get('lorem_ipsum'))
+endfunction
+
+unlet s:tc

test/tc_sort_date.todo.txt

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+# lorem_ipsum
+(B) 2013-03-15 2015-03-17
+(B) 2012-04-16 2015-04-16
+(A) 2013-03-16 2013-03-10
+# end_lorem_ipsum
+# task_with_no_date
+2013-03-15 task with date
+task with no date
+2013-03-15 task with date
+2013-03-15 task with date
+task with no date
+# end_task_with_no_date

test/tc_sort_date.vim

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+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) 2012-04-16 2015-04-16',
+      \ '(B) 2013-03-15 2015-03-17',
+      \ '(A) 2013-03-16 2013-03-10',
+      \ ]
+
+let s:SORTED_TASKS_WITH_NO_DATE = [
+      \ '2013-03-15 task with date',
+      \ '2013-03-15 task with date',
+      \ '2013-03-15 task with date',
+      \ 'task with no date',
+      \ 'task with no date',
+      \ ]
+
+function! s:tc.test_sort_by_date()
+  call self.data.visual_execute('call todo#txt#sort_by_date()', 'lorem_ipsum')
+  call self.assert_equal(s:SORTED_TASKS, self.data.get('lorem_ipsum'))
+endfunction
+
+function! s:tc.test_sort_by_date_with_tasks_without_date()
+  call self.data.visual_execute('call todo#txt#sort_by_date()', 'task_with_no_date')
+  call self.assert_equal(s:SORTED_TASKS_WITH_NO_DATE, self.data.get('task_with_no_date'))
+endfunction
+
+unlet s:tc

test/tc_sort_project.todo.txt

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+# lorem_ipsum
+(B) Linear regression Rnet=Qh+Qle. +cons_emp_model
+(B) Review key questions. +benchmarking
+(A) simple model first +cons_emp_model
+# end_lorem_ipsum

test/tc_sort_project.vim

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+let s:here = expand('<sfile>:p:h')
+let s:tc = unittest#testcase#new('Sort Project', 
+      \ { 'data': s:here . '/tc_sort_project.todo.txt' })
+
+let s:LEADER = mapleader
+
+let s:SORTED_TASKS = [
+      \ '(B) Review key questions. +benchmarking',
+      \ '(B) Linear regression Rnet=Qh+Qle. +cons_emp_model',
+      \ '(A) simple model first +cons_emp_model',
+      \ ]
+
+function! s:tc.test_sort_by_project()
+  call self.data.visual_execute('call todo#txt#sort_by_project()', 'lorem_ipsum')
+  call self.assert_equal(s:SORTED_TASKS, self.data.get('lorem_ipsum'))
+endfunction
+
+unlet s:tc