Compat for Serialization stdlib (#473)

* Compat for Serialization stdlib

* Add tests and fix

README.md

@@ -122,6 +122,9 @@ Currently, the `@compat` macro supports the following syntaxes:
 * `using Compat.REPL` is provided on versions older than 0.7, where this library is
   not yet part of the standard library ([#25544]).
 
+* `using Compat.Serialization` is provided on versions older than 0.7, where this library is
+  not yet part of the standard library ([#25628]).
+
 ## New functions, macros, and methods
 
 * `@views` takes an expression and converts all slices to views ([#20164]), while
@@ -496,6 +499,7 @@ includes this fix. Find the minimum version from there.
 [#25544]: https://github.com/JuliaLang/julia/issues/25544
 [#25545]: https://github.com/JuliaLang/julia/issues/25545
 [#25571]: https://github.com/JuliaLang/julia/issues/25571
+[#25628]: https://github.com/JuliaLang/julia/issues/25628
 [#25629]: https://github.com/JuliaLang/julia/issues/25629
 [#25654]: https://github.com/JuliaLang/julia/issues/25654
 [#24182]: https://github.com/JuliaLang/julia/issues/24182

src/Compat.jl

@@ -956,6 +956,15 @@ else
     import REPL
 end
 
+if VERSION < v"0.7.0-DEV.3476"
+    @eval module Serialization
+        import Base.Serializer: serialize, deserialize, SerializationState
+        export serialize, deserialize, SerializationState
+    end
+else
+    import Serialization
+end
+
 # 0.7.0-DEV.1993
 @static if !isdefined(Base, :EqualTo)
     if VERSION >= v"0.6.0"

test/runtests.jl

@@ -1263,6 +1263,17 @@ module TestREPL
     @test isdefined(@__MODULE__, :REPL)
 end
 
+# 0.7.0-DEV.3476
+module TestSerialization
+    using Compat
+    using Compat.Serialization
+    using Compat.Test
+    @test isdefined(@__MODULE__, :Serialization)
+    @test isdefined(@__MODULE__, :serialize)
+    @test isdefined(@__MODULE__, :deserialize)
+    @test isdefined(@__MODULE__, :SerializationState)
+end
+
 if VERSION < v"0.6.0"
     include("deprecated.jl")
 end