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spec/timetable_spec.lua: Add more test cases for negative day normalisation
[etc/awesome.git] / spec / timetable_spec.lua
1 describe("Timetable 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("#is_leap is correct", function()
13                 assert.same(false, timetable.is_leap(1))
14                 assert.same(false, timetable.is_leap(3))
15                 assert.same(true , timetable.is_leap(4))
16                 assert.same(true , timetable.is_leap(2000))
17                 assert.same(true , timetable.is_leap(2004))
18                 assert.same(true , timetable.is_leap(2012))
19                 assert.same(false, timetable.is_leap(2013))
20                 assert.same(false, timetable.is_leap(2014))
21                 assert.same(false, timetable.is_leap(2100))
22                 assert.same(true , timetable.is_leap(2400))
23         end)
24
25         it("#normalise gets #wday (day of week) correct", function()
26
27                 local function assert_same_wday(year, month, day)
28                         return assert.are.same(
29                                 native_normalise(year, month, day).wday,
30                                 timetable.new(year, month, day):normalise().wday
31                         )
32                 end
33
34                 assert_same_wday(2013, 7, 23)
35                 assert_same_wday(2013, 7, 24)
36                 assert_same_wday(2013, 7, 25)
37                 assert_same_wday(2013, 7, 26)
38                 assert_same_wday(2013, 7, 27)
39                 assert_same_wday(2013, 7, 28)
40                 assert_same_wday(2013, 7, 29)
41                 assert_same_wday(2014, 1, 1)
42                 assert_same_wday(2014, 1, 6)
43                 assert_same_wday(2016, 2, 28)
44                 assert_same_wday(2016, 2, 29)
45                 assert_same_wday(2016, 3, 1)
46         end)
47
48         local function native_timestamp(year, month, day)
49                 return assert(tonumber(assert(io.popen(
50                                                 string.format('date -u -d "%d-%d-%d" +%%s', year, month, day)
51                                         )):read "*l"))
52         end
53
54         it("#timestamp creation is valid", function()
55                 for y=1950,2013 do
56                         for m=1,12 do
57                                 assert.same(native_timestamp(y,m,1), timetable.timestamp(y,m,1,0,0,0))
58                         end
59                 end
60         end)
61
62         it("#normalise handles out of range days in a year", function()
63                 assert.same({2014,1,1,0,0,0}, {timetable.normalise(2013,1,366,0,0,0)})
64                 assert.same({2014,2,4,0,0,0}, {timetable.normalise(2013,1,400,0,0,0)})
65                 assert.same({2017,2,3,0,0,0}, {timetable.normalise(2016,1,400,0,0,0)})
66                 assert.same({2016,3,5,0,0,0}, {timetable.normalise(2015,1,430,0,0,0)})
67                 assert.same({2017,3,5,0,0,0}, {timetable.normalise(2016,1,430,0,0,0)})
68                 assert.same({2027,5,18,0,0,0}, {timetable.normalise(2000,1,10000,0,0,0)})
69                 assert.same({29379,1,25,0,0,0}, {timetable.normalise(2000,1,10000000,0,0,0)})
70         end)
71
72         it("#normalise handles out of range days in a #month", function()
73                 assert.same({2012,12,1,0,0,0}, {timetable.normalise(2013,0,1,0,0,0)})
74                 assert.same({2016,6,1,0,0,0}, {timetable.normalise(2013,42,1,0,0,0)})
75
76                 -- Correct behaviour around leap days
77                 assert.same({2012,3,23,0,0,0}, {timetable.normalise(2012,2,52,0,0,0)})
78                 assert.same({2013,3,24,0,0,0}, {timetable.normalise(2013,2,52,0,0,0)})
79
80                 assert.same({2012,2,27,0,0,0}, {timetable.normalise(2012,3,-2,0,0,0)})
81                 assert.same({2013,2,26,0,0,0}, {timetable.normalise(2013,3,-2,0,0,0)})
82
83                 -- Also when more fields are out of range
84                 assert.same({2016,7,22,0,0,0}, {timetable.normalise(2013,42,52,0,0,0)})
85                 assert.same({2016,7,24,2,0,0}, {timetable.normalise(2013,42,52,50,0,0)})
86         end)
87
88         it("#normalise handles fractional #month", function()
89                 assert.same({2015,2,15,0,0,0}, {timetable.normalise(2014,14.5,1,0,0,0)})
90                 assert.same({2016,2,15,12,0,0}, {timetable.normalise(2015,14.5,1,0,0,0)}) -- leap year, so hours is 12
91                 assert.same({2017,2,15,0,0,0}, {timetable.normalise(2016,14.5,1,0,0,0)})
92         end)
93
94         it("#normalise handles negative carry (issue #10)", function()
95                 assert.same({1970,01,01,00,59,00}, {timetable.normalise(1970,01,01,01,00,-60)})
96                 assert.same({1970,01,01,00,58,58}, {timetable.normalise(1970,01,01,01,00,-62)})
97                 assert.same({1969,12,31,23,55,58}, {timetable.normalise(1970,01,01,01,-63,-62)})
98                 assert.same({2017,02,3,0,0,0}, {timetable.normalise(2017,02,13,0,-14400,0)})
99         end)
100
101         it("#normalise handles negative day carry (issue #13)", function()
102                 assert.same({2016,11,30,00,00,00}, {timetable.normalise(2016,12,0,0,0,0)})
103                 assert.same({2017,11,30,00,00,00}, {timetable.normalise(2017,12,0,0,0,0)})
104                 assert.same({2018,11,30,00,00,00}, {timetable.normalise(2018,12,0,0,0,0)})
105
106                 assert.same({2017,2,13,0,0,0}, {timetable.normalise(2017,3,-15,0,0,0)})
107                 assert.same({2016,10,1,0,0,0}, {timetable.normalise(2017,3,-150,0,0,0)})
108                 assert.same({2013,1,20,0,0,0}, {timetable.normalise(2017,3,-1500,0,0,0)})
109                 assert.same({1976,2,4,0,0,0}, {timetable.normalise(2017,3,-15000,0,0,0)})
110                 assert.same({1606,6,23,0,0,0}, {timetable.normalise(2017,3,-150000,0,0,0)})
111         end)
112
113         local function round_trip_add(t, field, x)
114                 local before = t:clone()
115                 t[field]=t[field]+x;
116                 t:normalise();
117                 t[field]=t[field]-x;
118                 t:normalise();
119                 assert.same(0, t-before)
120         end
121         it("#normalise round trips", function()
122                 round_trip_add(timetable.new(2000,2,28,0,0,0), "month", 0.5)
123                 round_trip_add(timetable.new(2014,8,28,19,23,0), "month", 0.4)
124                 round_trip_add(timetable.new(2014,14.5,28,0,0,0), "month", 0.4)
125         end)
126
127         it("#rfc_3339 works with fractional milliseconds", function()
128                 -- on lua 5.3 this used to throw an error due to milliseconds not being an integer
129                 timetable.new_from_timestamp(1415141759.999911111):rfc_3339()
130         end)
131
132         it("#rfc_3339 doesn't round seconds up to 60 (issue #4)", function()
133                 assert.same("2014-11-04T22:55:59.999", timetable.new_from_timestamp(1415141759.999911111):rfc_3339())
134                 assert.same("1970-01-01T00:00:59.999", timetable.new_from_timestamp(59.9999999):rfc_3339())
135                 assert.same("1969-12-31T23:59:59.999", timetable.new_from_timestamp(-0.001):rfc_3339())
136                 assert.same("1969-12-31T23:59:00.000", timetable.new_from_timestamp(-59.9999999):rfc_3339())
137         end)
138 end)