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src/timetable: Fix timestamp function; add test
[etc/awesome.git] / spec / timetable_spec.lua
1 describe ( "Time table library" , function ( )
2         local timetable = require "timetable"
3
4         it ( "Doomsday calculation" , function ( )
5                 local doomsday = timetable.doomsday
6
7                 -- Doomsday in Gregorian calendar for 2013 is Thursday.
8                 assert.are.same ( 5 , doomsday(2013) )
9
10                 assert.are.same ( 3 , doomsday(1967) )
11                 assert.are.same ( 5 , doomsday(1968) )
12         end )
13
14         it ( "Get day of week correct" , function ( )
15                 local function native_normalise ( year , month , day )
16                         return os.date("*t",os.time{
17                                 year = year ;
18                                 month = month ;
19                                 day = day ;
20                         })
21                 end
22                 local function assert_same_wday ( year , month , day )
23                         return assert.are.same (
24                                 native_normalise ( year , month , day ).wday ,
25                                 timetable.new ( year , month , day ):normalise().wday
26                         )
27                 end
28
29                 assert_same_wday ( 2013 , 7 , 23 )
30                 assert_same_wday ( 2013 , 7 , 24 )
31                 assert_same_wday ( 2013 , 7 , 25 )
32                 assert_same_wday ( 2013 , 7 , 26 )
33                 assert_same_wday ( 2013 , 7 , 27 )
34                 assert_same_wday ( 2013 , 7 , 28 )
35                 assert_same_wday ( 2013 , 7 , 29 )
36         end )
37
38         local function native_timestamp ( year , month , day )
39                 return assert ( tonumber ( assert ( io.popen (
40                                                 string.format('date -u -d "%d-%d-%d" +%%s', year , month , day )
41                                         ) ):read "*l" ) )
42         end
43
44         it ( "Timestamp creation is valid" , function ( )
45                 for y=1950,2013 do
46                         for m=1,12 do
47                                 assert.same ( native_timestamp ( y,m,1 ) , timetable.timestamp(y,m,1,0,0,0) )
48                         end
49                 end
50         end)
51 end )