Add ExportRepresenter spec

spec/digital_scriptorium/export_representer_spec.rb

@@ -0,0 +1,45 @@
+# frozen_string_literal: true
+
+require 'wikibase_representable'
+
+module DigitalScriptorium
+  include WikibaseRepresentable::Model
+  include WikibaseRepresentable::Representers
+
+  RSpec.describe ExportRepresenter do
+    let(:holding_json) do
+      '{"type":"item","id":"Q102","claims":{"P16":[{"mainsnak":{"datavalue":{"value":{"id":"Q2"},"type":"wikibase-entityid"}}}],"P1":[{"mainsnak":{"datavalue":{"value":"DS 1","type":"string"}}}]}}'
+    end
+    let(:manuscript_json) do
+      '{"type":"item","id":"Q101","claims":{"P16":[{"mainsnak":{"datavalue":{"value":{"id":"Q1"},"type":"wikibase-entityid"}}}],"P2":[{"mainsnak":{"datavalue":{"value":{"id":"Q102"},"type":"wikibase-entityid"}}}]}}'
+    end
+    let(:record_json) do
+      '{"type":"item","id":"Q103","claims":{"P16":[{"mainsnak":{"datavalue":{"value":{"id":"Q3"},"type":"wikibase-entityid"}}}],"P3":[{"mainsnak":{"datavalue":{"value":{"id":"Q101"},"type":"wikibase-entityid"}}}]}}'
+    end
+    let(:property_json) do
+      '{"type":"property","id":"P16","datatype":"wikibase-item","labels":{"en":{"language":"en","value":"instance of"}}}'
+    end
+    let(:export_json) do
+      "[#{holding_json},#{manuscript_json},#{record_json},#{property_json}]"
+    end
+
+    it 'deserializes a Wikibase export from JSON' do
+      export = described_class.new(Export.new).from_json(export_json)
+      expect(export.size).to eq 4
+      expect(export[0]).to be_instance_of DsItem
+      expect(export[1]).to be_instance_of DsItem
+      expect(export[2]).to be_instance_of DsItem
+      expect(export[3]).to be_instance_of Property
+    end
+
+    it 'transforms a Wikibase export to a Hash' do
+      export = described_class.new(Export.new).from_json(export_json)
+      expect(export.to_hash).to eq({
+                                     'Q102' => ItemRepresenter.new(DsItem.new).from_json(holding_json),
+                                     'Q101' => ItemRepresenter.new(DsItem.new).from_json(manuscript_json),
+                                     'Q103' => ItemRepresenter.new(DsItem.new).from_json(record_json),
+                                     'P16' => PropertyRepresenter.new(Property.new).from_json(property_json)
+                                   })
+    end
+  end
+end