From 9af5ee7431a32e8f44ddc4a532aad8aef1548077 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=A9dric=20St-Jean?= <cedric.stjean@gmail.com>
Date: Sat, 1 Apr 2023 06:48:16 -0400
Subject: [PATCH] Add sleep method (#628)

---
 src/Unitful.jl | 1 +
 src/dates.jl   | 2 ++
 test/dates.jl  | 2 ++
 3 files changed, 5 insertions(+)

diff --git a/src/Unitful.jl b/src/Unitful.jl
index 50a59aed..ed34b1d5 100644
--- a/src/Unitful.jl
+++ b/src/Unitful.jl
@@ -16,6 +16,7 @@ import Base: length, float, last, one, oneunit, zero, range
 import Base: getindex, eltype, step, last, first, frexp
 import Base: Integer, Rational, typemin, typemax
 import Base: steprange_last, unsigned
+import Base: sleep
 @static if VERSION ≥ v"1.7.0-DEV.119"
     import Base: isunordered
 end
diff --git a/src/dates.jl b/src/dates.jl
index c1738098..eee39e48 100644
--- a/src/dates.jl
+++ b/src/dates.jl
@@ -186,3 +186,5 @@ end
 
 isapprox(x::AbstractArray{Dates.CompoundPeriod}, y::AbstractArray{<:AbstractQuantity};
          kwargs...) = isapprox(y, x; kwargs...)
+
+sleep(x::AbstractQuantity) = sleep(ustrip(s, x))
diff --git a/test/dates.jl b/test/dates.jl
index fd4be784..0fff991f 100644
--- a/test/dates.jl
+++ b/test/dates.jl
@@ -783,4 +783,6 @@
         @test_throws ErrorException promote(1u"m", Second(1))
         @test_throws ErrorException promote(Day(1), 3u"T")
     end
+
+    sleep(10u"ms")    # not tested explicitly, because sleep doesn't come with guarantees
 end