luatz/timetable: Optimize and export `is_leap`; add tests

[etc/awesome.git] / spec / timetable_spec.lua

diff --git a/spec/timetable_spec.lua b/spec/timetable_spec.lua
index a72a0f9b50a5db77ea019b7103f4884a3f329466..0ff42b12d7bbccb894a2f0143481dcb10278afc9 100644 (file)
--- a/spec/timetable_spec.lua
+++ b/spec/timetable_spec.lua
@@ -1,24 +1,29 @@
-describe ( "Time table library" , function ( )
-       local timetable = require "timetable"
+describe ( "Timetable library" , function ( )
+       local timetable = require "luatz.timetable"
 
-       it ( "Doomsday calculation" , function ( )
-               local doomsday = timetable.doomsday
+       local function native_normalise ( year , month , day )
+               return os.date("*t",os.time{
+                       year = year ;
+                       month = month ;
+                       day = day ;
+               })
+       end
 
-               -- 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) )
+       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 ( "Get day of week correct" , function ( )
-               local function native_normalise ( year , month , day )
-                       return os.date("*t",os.time{
-                               year = year ;
-                               month = month ;
-                               day = day ;
-                       })
-               end
+       it ( "#normalise gets #wday (day of week) correct" , function ( )
+
                local function assert_same_wday ( year , month , day )
                        return assert.are.same (
                                native_normalise ( year , month , day ).wday ,
@@ -33,5 +38,38 @@ describe ( "Time table library" , function ( )
                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 )
+               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 ( "#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 )