add plugin specs

plugins/article_import/spec/lib/bnn/foodsoft_article_import_bnn_spec.rb

@@ -0,0 +1,73 @@
+# frozen_string_literal: true
+
+require 'spec_helper'
+require_relative '../../../lib/foodsoft_article_import'
+
+describe FoodsoftArticleImport do
+  files_path = File.expand_path '../../files', __dir__
+  bnn_files_path = File.join(files_path, 'bnn')
+
+  dummy_article = { name: 'Greek Dressing - Kräuter Mix', order_number: '64721', note: 'Oregano, Basilikum und Minze',
+                    manufacturer: 'Medousa, Griechenland Importe', origin: 'GR', article_category: 'Kräutermischungen', unit: '35g', price: '2,89', tax: 7.0, unit_quantity: '6' }
+
+  article = dummy_article.merge({ deposit: 0.08 })
+  article_special = article.merge(note: 'Sonderpreis: 2,89 von 20230101 bis 20230201')
+
+  article_2 = dummy_article.merge({ manufacturer: nil, article_category: nil })
+
+  article_custom_code = article.merge(article_category: 'Schuhe')
+
+  empty = {}
+
+  context 'bnn' do
+    it 'parses bnn file correctly without type parameter' do
+      FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path,                     'bnn_flawless.BNN'))) do |new_attrs, status, _line|
+        expect(new_attrs).to eq article
+        expect(status).to eq :outlisted
+      end
+    end
+    it 'parses file correctly with type parameter' do
+      FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path, 'bnn_flawless.BNN')), type: 'bnn') do |new_attrs, status, _line|
+        expect(new_attrs).to eq article
+        expect(status).to eq :outlisted
+      end
+    end
+    it 'raises error wenn wrong type (except odin) specified' do
+      expect do
+        FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path, 'bnn_flawless.BNN')),   type: 'foodsoft')
+      end.to raise_error(RuntimeError)
+
+      expect(FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path, 'bnn_flawless.BNN')),        type: 'odin')).to eq []
+    end
+    it 'parses article with special correctly' do
+      FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path, 'bnn_flawless_special.BNN')), type: 'bnn') do |new_attrs, status, _line|
+        expect(new_attrs).to eq article_special
+        expect(status).to eq :special
+      end
+    end
+    it 'parses missing entries correctly' do
+      FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path, 'bnn_missing_entries.BNN')), type: 'bnn') do |new_attrs, status, _line|
+        expect(new_attrs).to eq article_2
+        expect(status).to eq nil
+      end
+    end
+    it 'skips rows without order_number' do
+      FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path, 'bnn_missing_order_number.BNN')), type: 'bnn') do |new_attrs, _status, _line|
+        expect(new_attrs).to eq empty
+      end
+    end
+    it 'joins custom_codes file' do
+      custom_file_path = File.join(files_path, 'custom_codes.yml').to_s
+      FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path, 'bnn_flawless_category.BNN')), custom_file_path: custom_file_path, type: 'bnn') do |new_attrs, _status, _line|
+        expect(new_attrs).to eq article_custom_code
+      end
+    end
+    it 'parses file with different encoding' do
+      # the bnn file is loaded with encoding ibm850. If file is not ibm850 encoded, some characters might look weird
+      FoodsoftArticleImport.parse(File.open(File.join(bnn_files_path, 'bnn_bad_encoding.BNN')), type: 'bnn') do |new_attrs, _status, _line|
+        expect(new_attrs[:order_number]).to eq('64721')
+        expect(new_attrs[:name]).to eq('Greek Dressing - Kräuter Mix')
+      end
+    end
+  end
+end