X-Git-Url: https://git.madduck.net/etc/awesome.git/blobdiff_plain/a74ef4ee5f93ac14d3ee03bf70a78d6a192e351f..98480fae7ef1afd7925d4f1d45fdefa5f3a7e475:/spec/timetable_spec.lua

diff --git a/spec/timetable_spec.lua b/spec/timetable_spec.lua
index 9a16af5..569864f 100644
--- a/spec/timetable_spec.lua
+++ b/spec/timetable_spec.lua
@@ -1,15 +1,5 @@
-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 )
+describe ( "Timetable library" , function ( )
+	local timetable = require "luatz.timetable"
 
 	local function native_normalise ( year , month , day )
 		return os.date("*t",os.time{
@@ -19,7 +9,20 @@ describe ( "Time table library" , function ( )
 		})
 	end
 
-	it ( "Get day of week correct" , function ( )
+	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 ( "#normalise gets #wday (day of week) correct" , function ( )
 
 		local function assert_same_wday ( year , month , day )
 			return assert.are.same (
@@ -35,6 +38,11 @@ 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 )
+		assert_same_wday ( 2016 , 2 , 29 )
+		assert_same_wday ( 2016 , 3 , 1 )
 	end )
 
 	local function native_timestamp ( year , month , day )
@@ -43,7 +51,7 @@ describe ( "Time table library" , function ( )
 					) ):read "*l" ) )
 	end
 
-	it ( "Timestamp creation is valid" , function ( )
+	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) )
@@ -51,7 +59,49 @@ describe ( "Time table library" , function ( )
 		end
 	end )
 
-	it ( "Out of range month is normalised" , function ( )
+	it ( "#normalise handles out of range days in a year" , function ( )
+		assert.same ( { timetable.normalise(2013,1,366,0,0,0) } , { 2014,1,1,0,0,0 } )
+		assert.same ( { timetable.normalise(2013,1,400,0,0,0) } , { 2014,2,4,0,0,0 } )
+		assert.same ( { timetable.normalise(2016,1,400,0,0,0) } , { 2017,2,3,0,0,0 } )
+		assert.same ( { timetable.normalise(2015,1,430,0,0,0) } , { 2016,3,5,0,0,0 } )
+		assert.same ( { timetable.normalise(2016,1,430,0,0,0) } , { 2017,3,5,0,0,0 } )
+		assert.same ( { timetable.normalise(2000,1,10000,0,0,0) } , { 2027,5,18,0,0,0 } )
+		assert.same ( { timetable.normalise(2000,1,10000000,0,0,0) } , { 29379,1,25,0,0,0 } )
+	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 )
+
+	it ( "#normalise handles fractional #month" , function ( )
+		assert.same ( { timetable.normalise(2014,14.5,1,0,0,0) } , { 2015,2,15,0,0,0 } )
+		assert.same ( { timetable.normalise(2015,14.5,1,0,0,0) } , { 2016,2,15,12,0,0 } ) -- leap year, so hours is 12
+		assert.same ( { timetable.normalise(2016,14.5,1,0,0,0) } , { 2017,2,15,0,0,0 } )
+	end )
+
+	local function round_trip_add(t, field, x)
+		local before = t:clone()
+		t[field]=t[field]+x;
+		t:normalise();
+		t[field]=t[field]-x;
+		t:normalise();
+		assert.same(0, t-before)
+	end
+	it ( "#normalise round trips" , function ( )
+		round_trip_add(timetable.new(2000,2,28,0,0,0), "month", 0.5)
+		round_trip_add(timetable.new(2014,8,28,19,23,0), "month", 0.4)
+		round_trip_add(timetable.new(2014,14.5,28,0,0,0), "month", 0.4)
 	end )
 end )