Add tests to printing of invalid enums

Author: jakobnissen

test/enums.jl

@@ -143,6 +143,10 @@ let io = IOBuffer()
     @test String(take!(io)) == sprint(print, Fruit)
 end
 
+# Test printing of invalid enums
+@test repr("text/plain", reinterpret(Fruit, Int32(11))) == "<invalid #11>::Fruit = 11"
+@test repr("text/plain", reinterpret(Fruit, Int32(-5))) == "<invalid #-5>::Fruit = -5"
+
 @enum LogLevel DEBUG INFO WARN ERROR CRITICAL
 @test DEBUG < CRITICAL
 
@@ -160,6 +164,9 @@ end
 @test repr("text/plain", sevn)  == "$(string(sevn))::UI8 = 0x07"
 @test repr("text/plain", fiftn) == "$(string(fiftn))::UI8 = 0xf0"
 
+@test repr("text/plain", reinterpret(UI8, 0x01)) == "<invalid #1>::UI8 = 0x01"
+@test repr("text/plain", reinterpret(UI8, 0xff)) == "<invalid #255>::UI8 = 0xff"
+
 # test block form
 @enum BritishFood begin
     blackpudding = 1