Merge pull request #37286 from Moelf/floor_ceil_datetime

add rouding for DateTime to Date

stdlib/Dates/src/rounding.jl

@@ -284,7 +284,13 @@ Base.round(x::TimeTypeOrPeriod, p::Period) = Base.round(x, p, RoundNearestTiesUp
 # Make rounding functions callable using Period types in addition to values.
 Base.floor(x::TimeTypeOrPeriod, ::Type{P}) where P <: Period = Base.floor(x, oneunit(P))
 Base.ceil(x::TimeTypeOrPeriod, ::Type{P}) where P <: Period = Base.ceil(x, oneunit(P))
+Base.floor(::Type{Date}, x::TimeTypeOrPeriod, ::Type{P}) where P <: Period = Base.floor(Date(x), oneunit(P))
+Base.ceil(::Type{Date}, x::TimeTypeOrPeriod, ::Type{P}) where P <: Period = Base.ceil(Date(x), oneunit(P))
 
 function Base.round(x::TimeTypeOrPeriod, ::Type{P}, r::RoundingMode=RoundNearestTiesUp) where P <: Period
  return Base.round(x, oneunit(P), r)
 end
+
+function Base.round(::Type{Date}, x::TimeTypeOrPeriod, ::Type{P}, r::RoundingMode=RoundNearestTiesUp) where P <: Period
+ return Base.round(Date(x), oneunit(P), r)
+end

stdlib/Dates/test/rounding.jl

@@ -188,6 +188,18 @@ end
  @test round(x, Dates.Microsecond) == Dates.Microsecond(2001000)
  @test round(x, Dates.Nanosecond) == x
 end
+
+@testset "Rouding DateTime to Date" begin
+ now_ = now()
+ for p in (Year, Month, Day)
+ for r in (RoundUp, RoundDown)
+ @test round(Date, now_, p, r) == round(Date(now_), p, r)
+ end
+ @test round(Date, now_, p) == round(Date, now_, p, RoundUp)
+ @test floor(Date, now_, p) == round(Date, now_, p, RoundDown)
+ @test ceil(Date, now_, p) == round(Date, now_, p, RoundUp)
+ end
+end
 @testset "Rounding for periods that should not need rounding" begin
  for x in [Dates.Week(3), Dates.Day(14), Dates.Second(604800)]
  local x
@@ -229,4 +241,3 @@ end
 end
 
 end
-