Implement upreferred(::Missing)

jlumpe · Apr 16, 2019 · 1653ab4 · 1653ab4
1 parent 82f8496
commit 1653ab4
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diff --git a/src/user.jl b/src/user.jl
@@ -318,6 +318,7 @@ units `ContextUnits(z,z)`.
 """
 @inline upreferred(x::Number) = x
 @inline upreferred(x::Quantity) = uconvert(upreferred(unit(x)), x)
+@inline upreferred(::Missing) = missing
 
 """
     upreferred(x::Units)

diff --git a/test/runtests.jl b/test/runtests.jl
@@ -266,6 +266,7 @@ end
         @test @inferred(upreferred(1g |> ContextUnits(g,mg))) == 1000mg
 
         @test @inferred(upreferred(1N)) === (1//1)*kg*m/s^2
+        @test ismissing(upreferred(missing))
     end
     @testset "> promote_unit" begin
         @test Unitful.promote_unit(FreeUnits(m)) === FreeUnits(m)