require 'test_helper'

class ReportTest < ActiveSupport::TestCase
  should ensure_inclusion_of(:type).in_array(MintReporter.config.reports)
  should have_attached_file(:csv)

  context "with a basic report" do
    setup { @report = BasicReport.create }

    should "default to the pending state" do
      assert_equal "pending", @report.state
    end

    should "add a task to the default queue after commit" do
      flexmock(@report).should_receive(:generate_csv).once
      @report.save
      @report.run_callbacks(:commit)
    end

    should "enqueue CSV generation task" do
      flexmock(CSVGenerationWorker).should_receive(:perform_async).
        with(@report.id).once
      @report.generate_csv
    end

    should "generate a csv" do
      records = [
        OpenStruct.new(:one => 'one', :two => 'two'),
        OpenStruct.new(:one => 'a', :two => 'b')
      ]
      flexmock(records).should_receive(:where).
        with(:created_at => @report.from_date..@report.to_date).
        and_return(records)
      flexmock(records).should_receive(:order).once.and_return(records)
      flexmock(@report).should_receive(:records).once.and_return(records)

      flexmock(@report).should_receive(:csv=).once
      @report.generate_csv!
    end
  end

  context "with a blank report" do
    setup { @report = FactoryGirl.create(:report, :blank) }

    should "raise an error on asking for csv column names" do
      e = assert_raises(MintReporter::Undefined) do
        @report.csv_column_names
      end
      assert_equal "Subclasses of Report must implement csv_column_names",
        e.message
    end

    should "raise an error on asking for csv row" do
      e = assert_raises(MintReporter::Undefined) do
        @report.csv_row(nil)
      end
      assert_equal "Subclasses of Report must implement csv_row",
        e.message
    end

    should "raise an error on asking for records" do
      e = assert_raises(MintReporter::Undefined) do
        @report.records
      end
      assert_equal "Subclasses of Report must implement records",
        e.message
    end
  end
end