require 'spec_helper'
require 'yaml'

describe Evrone::CI::Router::BuildMatrix do
  let(:attributes) { {
    env:   %w{ FOO=1 BAR=2 },
    rvm:   %w{ 1.8.7 1.9.3 2.0.0 },
    scala: %w{ 2.9.2 2.10.1 },
    before_script: "echo before_script",
    script: "echo script"
  } }
  let(:travis)  { create :travis, attributes: attributes }
  let(:matrix)  { described_class.new travis }

  subject { matrix }

  context "just created" do
    its(:travis) { should eq travis }
  end

  context "keys" do
    subject { matrix.keys }
    it { should eq %w{ env rvm scala } }
    context "without matrix" do
      let(:attributes) { {} }

      it { should eq [] }
    end
  end

  context 'travises' do
    subject { matrix.travises }

    it "should copy script from source" do
      expect(subject.map(&:script).uniq).to eq [["echo script"]]
    end

    it "should copy before_script from source" do
      expect(subject.map(&:before_script).uniq).to eq [["echo before_script"]]
    end

    context "values" do

      it { should have(12).items }

      context "attributes" do
        subject { matrix.travises.map(&:to_matrix_s) }

        it do
          should eq [
            "env:BAR=2, rvm:1.8.7, scala:2.10.1",
            "env:FOO=1, rvm:1.8.7, scala:2.10.1",
            "env:BAR=2, rvm:1.8.7, scala:2.9.2",
            "env:FOO=1, rvm:1.8.7, scala:2.9.2",
            "env:BAR=2, rvm:1.9.3, scala:2.10.1",
            "env:FOO=1, rvm:1.9.3, scala:2.10.1",
            "env:BAR=2, rvm:1.9.3, scala:2.9.2",
            "env:FOO=1, rvm:1.9.3, scala:2.9.2",
            "env:BAR=2, rvm:2.0.0, scala:2.10.1",
            "env:FOO=1, rvm:2.0.0, scala:2.10.1",
            "env:BAR=2, rvm:2.0.0, scala:2.9.2",
            "env:FOO=1, rvm:2.0.0, scala:2.9.2"
          ]
        end

        context "without matrix" do
          let(:attributes) { {
            rvm: %w{ 2.0.0 },
          } }

          it { should eq ['rvm:2.0.0'] }
        end
      end
    end
  end

  context 'attributes_for_new_travises' do
    subject { matrix.attributes_for_new_travises }

    it { should have(12).items }

    its(:first) { should eq("rvm"   => "1.8.7",
                            "scala" => "2.10.1",
                            "env"   => "BAR=2") }
    its(:last)  { should eq("rvm"   => "2.0.0",
                            "scala" => "2.9.2",
                            "env"   => "FOO=1") }
  end

  context 'extract_pair_of_key_and_values' do
    subject { matrix.extract_pair_of_key_and_values }
    it {
      should eq [
        ["rvm",   %w{ 1.8.7 1.9.3 2.0.0 }],
        ["scala", %w{ 2.9.2 2.10.1 }],
        ["env",   %w{ FOO=1 BAR=2 }]
      ]
    }
  end

  context "permutate_and_build_values" do
    subject { format_values matrix.permutate_and_build_values }
    let(:expected) { [
      %w{env:BAR=2 rvm:1.8.7 scala:2.10.1},
      %w{env:BAR=2 rvm:1.8.7 scala:2.9.2},
      %w{env:BAR=2 rvm:1.9.3 scala:2.10.1},
      %w{env:BAR=2 rvm:1.9.3 scala:2.9.2},
      %w{env:BAR=2 rvm:2.0.0 scala:2.10.1},
      %w{env:BAR=2 rvm:2.0.0 scala:2.9.2},
      %w{env:FOO=1 rvm:1.8.7 scala:2.10.1},
      %w{env:FOO=1 rvm:1.8.7 scala:2.9.2},
      %w{env:FOO=1 rvm:1.9.3 scala:2.10.1},
      %w{env:FOO=1 rvm:1.9.3 scala:2.9.2},
      %w{env:FOO=1 rvm:2.0.0 scala:2.10.1},
      %w{env:FOO=1 rvm:2.0.0 scala:2.9.2},
    ] }

    it { should eq expected }

    context "with empty keys" do
      let(:attributes) { {
        env:   %w{ FOO=1 BAR=2 },
        rvm:   %w{ 1.8.7 1.9.3 2.0.0 },
        scala: %w{ 2.9.2 2.10.1 },
        java: [],
        go: nil
      } }
      it { should eq expected }
    end

    context "with one key" do
      let(:attributes) { {
        rvm:   %w{ 1.9.3 2.0.0 },
      } }
      let(:expected) {[
        %w{ rvm:1.9.3 },
        %w{ rvm:2.0.0 }
      ]}
      it { should eq expected }
    end

    context "without matrix" do
      let(:attributes) { {
        rvm:   %w{ 2.0.0 },
      } }
      let(:expected) {[
        %w{ rvm:2.0.0 }
      ]}
      it { should eq expected }
    end

    def format_values(values)
      values.map{|i| i.map(&:to_s).sort }.sort
    end
  end
end