Add a regression test for report

We're about to refactor the BLAST::Report class, and it does not
seem to have any unit tests. The implementation is a bit hard to
comprehend with generic abbreviated variable names and data accessed
via indexes. To aid the refactoring, create a regression test that
takes a job generated on current master as gold standard and compares
it with the live version. If refactoring changes the outputs, the test
will fail.

Author: tadast

spec/blast/report_spec.rb

@@ -0,0 +1,38 @@
+require 'spec_helper'
+require 'sequenceserver/report'
+require 'sequenceserver/blast/report'
+
+module SequenceServer
+  RSpec.describe BLAST::Job do
+    before do
+      FileUtils.mkdir_p(DOTDIR)
+      FileUtils.rm_r(File.join(DOTDIR, job_id)) if File.exist?(File.join(DOTDIR, job_id))
+      FileUtils.cp_r(File.join(__dir__, '..', 'fixtures', job_id), DOTDIR)
+
+      # For all files in DOTDIR/job_id, replace $PATH_PREFIX with the root dir of the project.
+      job_dir = File.join(DOTDIR, job_id)
+      root_dir = File.expand_path(File.join(__dir__, '..', '..', '..'))
+      Dir[File.join(job_dir, '**', '*')].each do |f|
+        File.write(f, File.read(f).gsub('$PATH_PREFIX', root_dir)) if File.file?(f)
+      end
+
+      SequenceServer.init
+    end
+
+    let(:job_id) { '38334a72-e8e7-4732-872b-24d3f8723563' }
+    let(:job) { SequenceServer::Job.fetch(job_id) }
+    let(:report) { BLAST::Report.new(job) }
+    let(:keys_to_ignore) { %i[querydb submitted_at imported_xml seqserv_version cloud_sharing_enabled] }
+
+    describe "#to_json" do
+      it "returns a JSON representation of the job" do
+        actual_report = JSON.parse(report.to_json).reject { |k, _| keys_to_ignore.include?(k) }
+        expected_report = JSON.parse(File.read(File.join(job.dir, 'expected_outputs/frontend.json'))).reject { |k, _| keys_to_ignore.include?(k) }
+
+        actual_report.each do |k, v|
+          expect(v).to eq(expected_report[k])
+        end
+      end
+    end
+  end
+end