luatz/timetable.lua: Fix incorrect normalisation logic for negative day field

[etc/awesome.git] / spec / timetable_spec.lua

diff --git a/spec/timetable_spec.lua b/spec/timetable_spec.lua
index 930d36b32b94f398f260580352ee980a6e4497d8..6c9617e2c2dcce2a1e59dc94a0f0407c6534568b 100644 (file)
--- a/spec/timetable_spec.lua
+++ b/spec/timetable_spec.lua
@@ -77,8 +77,8 @@ describe ( "Timetable library" , function ( )
                assert.same({ 2012,3,23,0,0,0 }, { timetable.normalise(2012,2,52,0,0,0) })
                assert.same({ 2013,3,24,0,0,0 }, { timetable.normalise(2013,2,52,0,0,0) })
 
-               assert.same({ 2012,2,26,0,0,0 }, { timetable.normalise(2012,3,-2,0,0,0) })
-               assert.same({ 2013,2,27,0,0,0 }, { timetable.normalise(2013,3,-2,0,0,0) })
+               assert.same({ 2012,2,27,0,0,0 }, { timetable.normalise(2012,3,-2,0,0,0) })
+               assert.same({ 2013,2,26,0,0,0 }, { timetable.normalise(2013,3,-2,0,0,0) })
 
                -- Also when more fields are out of range
                assert.same({ 2016,7,22,0,0,0 }, { timetable.normalise(2013,42,52,0,0,0) })
@@ -98,6 +98,12 @@ describe ( "Timetable library" , function ( )
                assert.same({ 2017,02,3,0,0,0 }, { timetable.normalise(2017,02,13,0,-14400,0) })
        end )
 
+       it ( "#normalise handles negative day carry (issue #13)", function()
+               assert.same({ 2016,11,30,00,00,00 }, { timetable.normalise(2016,12,0,0,0,0) })
+               assert.same({ 2017,11,30,00,00,00 }, { timetable.normalise(2017,12,0,0,0,0) })
+               assert.same({ 2018,11,30,00,00,00 }, { timetable.normalise(2018,12,0,0,0,0) })
+       end )
+
        local function round_trip_add(t, field, x)
                local before = t:clone()
                t[field]=t[field]+x;