Add missing import for Mmap (#515)

* import Mmap

* add Mmap to _Project.toml

* add test for readmmap

_Project.toml

@@ -8,6 +8,7 @@ BinDeps = "9e28174c-4ba2-5203-b857-d8d62c4213ee"
 Blosc = "a74b3585-a348-5f62-a45c-50e91977d574"
 Homebrew = "d9be37ee-ecc9-5288-90f1-b9ca67657a75"
 Libdl = "8f399da3-3557-5675-b5ff-fb832c97cbdb"
+Mmap = "a63ad114-7e13-5084-954f-fe012c677804"
 WinRPM = "c17dfb99-b4f7-5aad-8812-456da1ad7187"
 
 [extras]

src/HDF5.jl

@@ -8,6 +8,7 @@ import Base:
     setindex!, show, size, sizeof, write, isopen, iterate
 
 import Libdl
+import Mmap
 
 export
     # types

test/mmap.jl

@@ -0,0 +1,23 @@
+using HDF5
+using Test
+
+@testset "mmap" begin
+
+# Create a new file
+fn = tempname()
+f = h5open(fn, "w")
+@test isopen(f)
+
+# Write  HDF5 file
+hdf5_A = d_create(f,"A",datatype(Int64),dataspace(3,3));
+A = rand(Int64,3,3)
+hdf5_A[:,:] = A
+flush(f);
+close(f);
+# Read HDF5 file & MMAP
+f = h5open(fn,"r");
+A_mmaped = readmmap(f["A"]);
+
+@test all(A .== A_mmaped)
+
+end

test/runtests.jl

@@ -10,6 +10,9 @@ include("extend_test.jl")
 include("gc.jl")
 include("external.jl")
 include("swmr.jl")
+if !Sys.iswindows() # Mmap needs to be fixed on windows
+  include("mmap.jl")
+end
 if get(Pkg.installed(), "MPI", nothing) !== nothing
   # basic MPI tests, for actual parallel tests we need to run in MPI mode
   include("mpio.jl")