# frozen_string_literal: true

require 'fast_spec_helper'
require 'rspec-parameterized'

describe Gitlab::InstrumentationHelper do
  using RSpec::Parameterized::TableSyntax

  describe '.queue_duration_for_job' do
    where(:enqueued_at, :created_at, :time_now, :expected_duration) do
      "2019-06-01T00:00:00.000+0000" | nil                            | "2019-06-01T02:00:00.000+0000" | 2.hours.to_f
      "2019-06-01T02:00:00.000+0000" | nil                            | "2019-06-01T02:00:00.001+0000" | 0.001
      "2019-06-01T02:00:00.000+0000" | "2019-05-01T02:00:00.000+0000" | "2019-06-01T02:00:01.000+0000" | 1
      nil                            | "2019-06-01T02:00:00.000+0000" | "2019-06-01T02:00:00.001+0000" | 0.001
      nil                            | nil                            | "2019-06-01T02:00:00.001+0000" | nil
      "2019-06-01T02:00:00.000+0200" | nil                            | "2019-06-01T02:00:00.000-0200" | 4.hours.to_f
      1571825569.998168              | nil                            | "2019-10-23T12:13:16.000+0200" | 26.001832
      1571825569                     | nil                            | "2019-10-23T12:13:16.000+0200" | 27
      "invalid_date"                 | nil                            | "2019-10-23T12:13:16.000+0200" | nil
      ""                             | nil                            | "2019-10-23T12:13:16.000+0200" | nil
      0                              | nil                            | "2019-10-23T12:13:16.000+0200" | nil
      -1                             | nil                            | "2019-10-23T12:13:16.000+0200" | nil
      "2019-06-01T02:00:00.000+0000" | nil                            | "2019-06-01T00:00:00.000+0000" | 0
      Time.at(1571999233)            | nil                            | "2019-10-25T12:29:16.000+0200" | 123
    end

    with_them do
      let(:job) { { 'enqueued_at' => enqueued_at, 'created_at' => created_at } }

      it "returns the correct duration" do
        Timecop.freeze(Time.iso8601(time_now)) do
          expect(described_class.queue_duration_for_job(job)).to eq(expected_duration)
        end
      end
    end
  end
end