-describe ( "Time table library" , function ( )
+describe ( "Timetable library" , function ( )
local timetable = require "luatz.timetable"
- it ( "Doomsday calculation" , function ( )
- local doomsday = timetable.doomsday
-
- -- Doomsday in Gregorian calendar for 2013 is Thursday.
- assert.are.same ( 5 , doomsday(2013) )
-
- assert.are.same ( 3 , doomsday(1967) )
- assert.are.same ( 5 , doomsday(1968) )
- end )
-
local function native_normalise ( year , month , day )
return os.date("*t",os.time{
year = year ;
})
end
- it ( "Get day of week correct" , function ( )
+ 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 )
return assert.are.same (
assert_same_wday ( 2013 , 7 , 27 )
assert_same_wday ( 2013 , 7 , 28 )
assert_same_wday ( 2013 , 7 , 29 )
+ assert_same_wday ( 2014 , 1 , 1 )
+ assert_same_wday ( 2014 , 1 , 6 )
+ assert_same_wday ( 2016 , 2 , 28 )
end )
local function native_timestamp ( year , month , day )
) ):read "*l" ) )
end
- it ( "Timestamp creation is valid" , function ( )
+ it ( "#timestamp creation is valid" , function ( )
for y=1950,2013 do
for m=1,12 do
assert.same ( native_timestamp ( y,m,1 ) , timetable.timestamp(y,m,1,0,0,0) )
end
end )
- it ( "Out of range month is normalised" , function ( )
+ 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 } )
+
+ -- Correct behaviour around leap days
+ assert.same ( { timetable.normalise(2012,2,52,0,0,0) } , { 2012,3,23,0,0,0 } )
+ assert.same ( { timetable.normalise(2013,2,52,0,0,0) } , { 2013,3,24,0,0,0 } )
+
+ assert.same ( { timetable.normalise(2012,3,-2,0,0,0) } , { 2012,2,26,0,0,0 } )
+ assert.same ( { timetable.normalise(2013,3,-2,0,0,0) } , { 2013,2,27,0,0,0 } )
+
+ -- Also when more fields are out of range
+ 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 )
end )