describe ( "Time table library" , function ( ) local timetable = require "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 ; month = month ; day = day ; }) end it ( "Get day of week correct" , function ( ) local function assert_same_wday ( year , month , day ) return assert.are.same ( native_normalise ( year , month , day ).wday , timetable.new ( year , month , day ):normalise().wday ) end assert_same_wday ( 2013 , 7 , 23 ) assert_same_wday ( 2013 , 7 , 24 ) assert_same_wday ( 2013 , 7 , 25 ) assert_same_wday ( 2013 , 7 , 26 ) assert_same_wday ( 2013 , 7 , 27 ) assert_same_wday ( 2013 , 7 , 28 ) assert_same_wday ( 2013 , 7 , 29 ) end ) local function native_timestamp ( year , month , day ) return assert ( tonumber ( assert ( io.popen ( string.format('date -u -d "%d-%d-%d" +%%s', year , month , day ) ) ):read "*l" ) ) end 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 end ) it ( "Out of range month is normalised" , function ( ) assert.same ( { timetable.normalise(2013,0,1,0,0,0) } , { 2012,12,1,0,0,0 } ) end ) end )