Add RenewFile class

Co-authored-by: Max Kadel <[email protected]>

app/models/alma_renew/renew_file.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require 'csv'
+
+module AlmaRenew
+  class RenewFile
+    attr_reader :temp_file, :renew_item_list
+    def initialize(temp_file:)
+      @temp_file = temp_file
+      @renew_item_list = []
+    end
+
+    def process
+      CSVValidator.new(csv_filename: temp_file.path).require_headers ['Barcode', 'Patron Group', 'Expiry Date', 'Primary Identifier']
+      CSV.foreach(temp_file, headers: true, encoding: 'bom|utf-8') do |row|
+        renew_item_list << Item.new(row.to_h)
+      end
+      renew_item_list
+    end
+  end
+end

spec/models/alma_renew/renew_file_spec.rb

@@ -0,0 +1,39 @@
+# frozen_string_literal: true
+require 'rails_helper'
+
+RSpec.describe AlmaRenew::RenewFile, type: :model, file_download: true do
+  let(:temp_file) { Tempfile.new(encoding: 'ascii-8bit') }
+  let(:renew_file) { described_class.new(temp_file:) }
+
+  it "can be instantiated" do
+    expect(described_class.new(temp_file:)).to be
+  end
+
+  it "can access the temp_file" do
+    expect(renew_file.temp_file).to eq(temp_file)
+  end
+
+  describe "#process" do
+    before do
+      allow(Tempfile).to receive(:new).and_return(temp_file)
+    end
+
+    around do |example|
+      temp_file.write(File.open(File.join('spec', 'fixtures', 'renew.csv')).read)
+      temp_file.rewind
+      example.run
+    end
+
+    it "can be processed" do
+      expect(described_class.new(temp_file:).process).to be
+    end
+
+    it "returns an array" do
+      expect(renew_file.process).to be_instance_of(Array)
+    end
+
+    it "has Items in the array" do
+      expect(renew_file.process.first).to be_instance_of(AlmaRenew::Item)
+    end
+  end
+end