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spec/strftime: only call gmtime once; then clone
[etc/awesome.git] / spec / timetable_spec.lua
1 describe ( "Time table library" , function ( )
2         local timetable = require "luatz.timetable"
3
4         local function native_normalise ( year , month , day )
5                 return os.date("*t",os.time{
6                         year = year ;
7                         month = month ;
8                         day = day ;
9                 })
10         end
11
12         it ( "Get day of week correct" , function ( )
13
14                 local function assert_same_wday ( year , month , day )
15                         return assert.are.same (
16                                 native_normalise ( year , month , day ).wday ,
17                                 timetable.new ( year , month , day ):normalise().wday
18                         )
19                 end
20
21                 assert_same_wday ( 2013 , 7 , 23 )
22                 assert_same_wday ( 2013 , 7 , 24 )
23                 assert_same_wday ( 2013 , 7 , 25 )
24                 assert_same_wday ( 2013 , 7 , 26 )
25                 assert_same_wday ( 2013 , 7 , 27 )
26                 assert_same_wday ( 2013 , 7 , 28 )
27                 assert_same_wday ( 2013 , 7 , 29 )
28                 assert_same_wday ( 2014 , 1 , 1 )
29                 assert_same_wday ( 2014 , 1 , 6 )
30                 assert_same_wday ( 2016 , 2 , 28 )
31         end )
32
33         local function native_timestamp ( year , month , day )
34                 return assert ( tonumber ( assert ( io.popen (
35                                                 string.format('date -u -d "%d-%d-%d" +%%s', year , month , day )
36                                         ) ):read "*l" ) )
37         end
38
39         it ( "Timestamp creation is valid" , function ( )
40                 for y=1950,2013 do
41                         for m=1,12 do
42                                 assert.same ( native_timestamp ( y,m,1 ) , timetable.timestamp(y,m,1,0,0,0) )
43                         end
44                 end
45         end )
46
47         it ( "Out of range month is normalised" , function ( )
48                 assert.same ( { timetable.normalise(2013,0,1,0,0,0) } , { 2012,12,1,0,0,0 } )
49         end )
50 end )