add tests

test/test_cdm.jl

@@ -0,0 +1,73 @@
+using CommonDataModel: iswritable, attribnames, parentdataset, load!, dataset
+using Dates
+using DiskArrays
+using NCDatasets
+using Test
+using ZarrDatasets
+
+
+fname = tempname()
+mkpath(fname)
+
+nczarr_name = "file://" * fname * "#mode=zarr"
+@debug "filenames " nczarr_name fname
+v = randn(2,3)
+ds = NCDataset(nczarr_name,"c")
+defVar(ds,"var",v,("lon","lat"),attrib = Dict(
+    "foo" => "bar",
+    "int_attribute" => 1,
+    "float_attribute" => 1.,
+    "scale_factor" => 1.23))
+ds.attrib["title"] = "test file"
+close(ds)
+
+ds = NCDataset(nczarr_name)
+dsz = ZarrDataset(fname)
+
+@test Set(dimnames(dsz)) == Set(dimnames(ds))
+
+for (name,len) in ds.dim
+    @test dsz.dim[name] == len
+end
+
+for (varname,v) in ds
+    @test haskey(dsz,varname)
+
+    v2 = dsz[varname]
+    @test Array(v2) == Array(v)
+
+    for (attribname,attribval) in v.attrib
+        @test v2.attrib[attribname] == attribval
+    end
+end
+
+for (attribname,attribval) in ds.attrib
+    @test dsz.attrib[attribname] == attribval
+end
+
+io = IOBuffer()
+show(io,dsz)
+str = String(take!(io))
+@test occursin("title",str)
+
+@test !iswritable(dsz)
+@test "title" in attribnames(dsz)
+@test isnothing(parentdataset(dsz))
+
+zvar = ZarrDataset(fname) do ds3
+    Array(ds3["var"])
+end
+
+@test DiskArrays.haschunks(dsz["var"]) == DiskArrays.Chunked()
+@test length(DiskArrays.eachchunk(dsz["var"])) ≥ 1
+@test zvar == Array(ds["var"])
+
+v = dsz["var"].var
+buffer = zeros(eltype(v),size(v))
+load!(v,buffer,:,:)
+
+@test buffer == Array(ds["var"].var)
+
+@test dataset(dsz["var"]) == dsz
+close(ds)
+close(dsz)

test/test_multifile.jl

@@ -0,0 +1,78 @@
+using CommonDataModel: iswritable, attribnames, parentdataset, load!, dataset, MFDataset
+using Dates
+using DiskArrays
+using NCDatasets
+using Test
+using ZarrDatasets
+
+
+fnames = [tempname(), tempname()]
+v = randn(2,3,length(fnames))
+
+nczarr_names = ["file://" * fname * "#mode=zarr" for fname in fnames]
+
+for i = 1:length(fnames)
+    mkpath(fnames[i])
+    ds = NCDataset(nczarr_names[i],"c")
+    defVar(ds,"var",v[:,:,i:i],("lon","lat","time"),attrib = Dict(
+        "foo" => "bar",
+        "int_attribute" => 1,
+        "float_attribute" => 1.,
+        "scale_factor" => 1.23))
+    ds.attrib["title"] = "test file"
+    close(ds)
+end
+
+ds = NCDataset(nczarr_names,aggdim="time")
+dsz = ZarrDataset(fnames,aggdim="time")
+
+@test Set(dimnames(dsz)) == Set(dimnames(ds))
+
+for (name,len) in ds.dim
+    @test dsz.dim[name] == len
+end
+
+for (varname,v) in ds
+#    @test haskey(dsz,varname)
+
+    v2 = dsz[varname]
+    @test Array(v2) == Array(v)
+
+    for (attribname,attribval) in v.attrib
+        @test v2.attrib[attribname] == attribval
+    end
+end
+
+for (attribname,attribval) in ds.attrib
+    @test dsz.attrib[attribname] == attribval
+end
+
+io = IOBuffer()
+show(io,dsz)
+str = String(take!(io))
+@test occursin("title",str)
+
+@test !iswritable(dsz)
+@test "title" in attribnames(dsz)
+#@test isnothing(parentdataset(dsz))
+
+zvar = ZarrDataset(fname) do ds3
+    Array(ds3["var"])
+end
+
+#=
+
+#@test DiskArrays.haschunks(dsz["var"]) == DiskArrays.Chunked()
+@test length(DiskArrays.eachchunk(dsz["var"])) ≥ 1
+@test zvar == Array(ds["var"])
+
+v = dsz["var"].var
+buffer = zeros(eltype(v),size(v))
+load!(v,buffer,:,:)
+
+@test buffer == Array(ds["var"].var)
+
+@test dataset(dsz["var"]) == dsz
+close(ds)
+close(dsz)
+=#