require "spec_helper"
MetricFu.metrics_require { "stats/generator" }

describe StatsGenerator do
  describe "emit method" do
    it "should gather the raw data" do
      ENV["CC_BUILD_ARTIFACTS"] = nil
      MetricFu.configure.reset
      allow(File).to receive(:directory?).and_return(true)
      stats = MetricFu::StatsGenerator.new
      stats.emit
    end
  end

  # TODO review tested output
  describe "analyze method" do
    before :each do
      @lines =  <<-HERE.gsub(/^\s*/, "")
      +----------------------+-------+-------+---------+---------+-----+-------+
      | Name                 | Lines |   LOC | Classes | Methods | M/C | LOC/M |
      +----------------------+-------+-------+---------+---------+-----+-------+
      | Controllers          |   470 |   382 |       7 |      53 |   7 |     5 |
      | Helpers              |   128 |    65 |       0 |       6 |   0 |     8 |
      | Models               |   351 |   285 |       9 |      31 |   3 |     7 |
      | Libraries            |   305 |   183 |       2 |      30 |  15 |     4 |
      | Model specs          |   860 |   719 |       0 |       2 |   0 |   357 |
      | View specs           |     0 |     0 |       0 |       0 |   0 |     0 |
      | Controller specs     |  1570 |  1308 |       1 |      10 |  10 |   128 |
      | Helper specs         |   191 |   172 |       0 |       0 |   0 |     0 |
      | Library specs        |    31 |    27 |       0 |       0 |   0 |     0 |
      +----------------------+-------+-------+---------+---------+-----+-------+
      | Total                |  3906 |  3141 |      19 |     132 |   6 |    21 |
      +----------------------+-------+-------+---------+---------+-----+-------+
        Code LOC: 915     Test LOC: 2226     Code to Test Ratio: 1:2.4

      HERE
      ENV["CC_BUILD_ARTIFACTS"] = nil
      MetricFu.configure.reset
      allow(File).to receive(:directory?).and_return(true)
      stats = MetricFu::StatsGenerator.new
      stats.instance_variable_set("@output", @lines)
      @results = stats.analyze
    end

    it "should get code Lines Of Code" do
      expect(@results[:codeLOC]).to eq(915)
    end

    it "should get test Lines Of Code" do
      expect(@results[:testLOC]).to eq(2226)
    end

    it "should get code to test ratio" do
      expect(@results[:code_to_test_ratio]).to eq(2.4)
    end

    it "should get data on models" do
      model_data = @results[:lines].find { |line| line[:name] == "Models" }
      expect(model_data[:classes]).to eq(9)
      expect(model_data[:methods]).to eq(31)
      expect(model_data[:loc]).to eq(285)
      expect(model_data[:lines]).to eq(351)
      expect(model_data[:methods_per_class]).to eq(3)
      expect(model_data[:loc_per_method]).to eq(7)
    end

    it "handles code to test ratio is ratio is 1:NaN" do
      lines =  <<-HERE.gsub(/^\s*/, "")
      +----------------------+-------+-------+---------+---------+-----+-------+
      | Name                 | Lines |   LOC | Classes | Methods | M/C | LOC/M |
      +----------------------+-------+-------+---------+---------+-----+-------+
      +----------------------+-------+-------+---------+---------+-----+-------+
        Code LOC: 0     Test LOC: 0     Code to Test Ratio: 1:NaN

      HERE
      ENV["CC_BUILD_ARTIFACTS"] = nil
      MetricFu.configure.reset
      allow(File).to receive(:directory?).and_return(true)
      stats = MetricFu::StatsGenerator.new(MetricFu::Metric.get_metric(:stats).run_options)
      stats.instance_variable_set("@output", lines)
      @results = stats.analyze
      expect(@results[:code_to_test_ratio]).to eq(0.0)
    end
  end

  describe "to_h method" do
    it "should put things into a hash" do
      ENV["CC_BUILD_ARTIFACTS"] = nil
      MetricFu.configure.reset
      allow(File).to receive(:directory?).and_return(true)
      stats = MetricFu::StatsGenerator.new
      stats.instance_variable_set(:@stats, "the_stats")
      expect(stats.to_h[:stats]).to eq("the_stats")
    end
  end
end