doc/timetable: Document `normalise` fractional behaviour

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

diff --git a/spec/timetable_spec.lua b/spec/timetable_spec.lua
index b76991159cd775c083698c8e81a72c8e1323a753..569864fc8beba43faeee83a8a036fcce84c9bc86 100644 (file)
--- a/spec/timetable_spec.lua
+++ b/spec/timetable_spec.lua
@@ -9,6 +9,19 @@ describe ( "Timetable library" , function ( )
                })
        end
 
+       it ( "#is_leap is correct" , function ( )
+               assert.same ( false , timetable.is_leap ( 1 ) )
+               assert.same ( false , timetable.is_leap ( 3 ) )
+               assert.same ( true  , timetable.is_leap ( 4 ) )
+               assert.same ( true  , timetable.is_leap ( 2000 ) )
+               assert.same ( true  , timetable.is_leap ( 2004 ) )
+               assert.same ( true  , timetable.is_leap ( 2012 ) )
+               assert.same ( false , timetable.is_leap ( 2013 ) )
+               assert.same ( false , timetable.is_leap ( 2014 ) )
+               assert.same ( false , timetable.is_leap ( 2100 ) )
+               assert.same ( true  , timetable.is_leap ( 2400 ) )
+       end )
+
        it ( "#normalise gets #wday (day of week) correct" , function ( )
 
                local function assert_same_wday ( year , month , day )
@@ -28,6 +41,8 @@ describe ( "Timetable library" , function ( )
                assert_same_wday ( 2014 , 1 , 1 )
                assert_same_wday ( 2014 , 1 , 6 )
                assert_same_wday ( 2016 , 2 , 28 )
+               assert_same_wday ( 2016 , 2 , 29 )
+               assert_same_wday ( 2016 , 3 , 1 )
        end )
 
        local function native_timestamp ( year , month , day )
@@ -44,6 +59,16 @@ describe ( "Timetable library" , function ( )
                end
        end )
 
+       it ( "#normalise handles out of range days in a year" , function ( )
+               assert.same ( { timetable.normalise(2013,1,366,0,0,0) } , { 2014,1,1,0,0,0 } )
+               assert.same ( { timetable.normalise(2013,1,400,0,0,0) } , { 2014,2,4,0,0,0 } )
+               assert.same ( { timetable.normalise(2016,1,400,0,0,0) } , { 2017,2,3,0,0,0 } )
+               assert.same ( { timetable.normalise(2015,1,430,0,0,0) } , { 2016,3,5,0,0,0 } )
+               assert.same ( { timetable.normalise(2016,1,430,0,0,0) } , { 2017,3,5,0,0,0 } )
+               assert.same ( { timetable.normalise(2000,1,10000,0,0,0) } , { 2027,5,18,0,0,0 } )
+               assert.same ( { timetable.normalise(2000,1,10000000,0,0,0) } , { 29379,1,25,0,0,0 } )
+       end )
+
        it ( "#normalise handles out of range days in a #month" , function ( )
                assert.same ( { timetable.normalise(2013,0,1,0,0,0) } , { 2012,12,1,0,0,0 } )
                assert.same ( { timetable.normalise(2013,42,1,0,0,0) } , { 2016,6,1,0,0,0 } )
@@ -59,4 +84,24 @@ describe ( "Timetable library" , function ( )
                assert.same ( { timetable.normalise(2013,42,52,0,0,0) } , { 2016,7,22,0,0,0 } )
                assert.same ( { timetable.normalise(2013,42,52,50,0,0) } , { 2016,7,24,2,0,0 } )
        end )
+
+       it ( "#normalise handles fractional #month" , function ( )
+               assert.same ( { timetable.normalise(2014,14.5,1,0,0,0) } , { 2015,2,15,0,0,0 } )
+               assert.same ( { timetable.normalise(2015,14.5,1,0,0,0) } , { 2016,2,15,12,0,0 } ) -- leap year, so hours is 12
+               assert.same ( { timetable.normalise(2016,14.5,1,0,0,0) } , { 2017,2,15,0,0,0 } )
+       end )
+
+       local function round_trip_add(t, field, x)
+               local before = t:clone()
+               t[field]=t[field]+x;
+               t:normalise();
+               t[field]=t[field]-x;
+               t:normalise();
+               assert.same(0, t-before)
+       end
+       it ( "#normalise round trips" , function ( )
+               round_trip_add(timetable.new(2000,2,28,0,0,0), "month", 0.5)
+               round_trip_add(timetable.new(2014,8,28,19,23,0), "month", 0.4)
+               round_trip_add(timetable.new(2014,14.5,28,0,0,0), "month", 0.4)
+       end )
 end )