Add a few more tests.

Author: chriselrod

src/static.jl

@@ -135,8 +135,8 @@ end
 
 @inline Base.widen(::StaticInt{N}) where {N} = widen(N)
 
-Base.UnitRange{T}(start::StaticInt, stop) where {T<:Real} = UnitRange{T}(T(start), stop)
-Base.UnitRange{T}(start, stop::StaticInt) where {T<:Real} = UnitRange{T}(start, T(stop))
+Base.UnitRange{T}(start::StaticInt, stop) where {T<:Real} = UnitRange{T}(T(start), T(stop))
+Base.UnitRange{T}(start, stop::StaticInt) where {T<:Real} = UnitRange{T}(T(start), T(stop))
 function Base.UnitRange{T}(start::StaticInt, stop::StaticInt) where {T<:Real}
     return UnitRange{T}(T(start), T(stop))
 end

test/runtests.jl

@@ -597,6 +597,13 @@ end
             @test convert(typeof(z), @inferred(f(2 // 7, i))) === z 
         end
     end
+
+    @test UnitRange{Int16}(StaticInt(-9), 17) === Int16(-9):Int16(17)
+    @test UnitRange{Int16}(-7, StaticInt(19)) === Int16(-7):Int16(19)
+    @test UnitRange(-11, StaticInt(15)) === -11:15
+    @test UnitRange(StaticInt(-11), 15) === -11:15
+    @test UnitRange(StaticInt(-11), StaticInt(15)) === -11:15
+    @test float(StaticInt(8)) === 8.0
 end
 
 @testset "insert/deleteat" begin