require 'spec_helper'

# we use undefined numbers for field otherwise we interfere
# with already defined fields in definitions.rb and test are
# not really independant of the code
describe FitParser::File::Definitions do
  describe ".add_field" do
    before :all do
      @fields = described_class.fields
      @dyn_fields = described_class.dyn_fields
    end

    after :all do
      FitParser::File::Definitions.fields = @fields
      FitParser::File::Definitions.dyn_fields = @dyn_fields
    end

    context "without additional options" do
      before :each do
        FitParser::File::Definitions.fields = Hash.new { |h,k| h[k]={} }
        FitParser::File::Definitions.dyn_fields = Hash.new { |h,k| h[k]={} }
        described_class.add_field(999, 999, 'rspec_test')
      end

      it "adds field data" do
        expect(described_class.get_field(999,999)).to be_a(Hash)
        expect(described_class.get_field(999,999)).to eql({ :name => 'rspec_test'})
      end

      it 'raised an error for dynamic field data' do
        expect { described_class.add_field(999, 999, 'rspec_test_dyn') }.to raise_error
      end
    end

    context "with additional options" do
      before :each do
        FitParser::File::Definitions.fields = Hash.new { |h,k| h[k]={} }
        FitParser::File::Definitions.dyn_fields = Hash.new { |h,k| h[k]={} }
        described_class.add_field(999, 999, 'rspec_test', :scale => 100, :units => 'm')
        described_class.add_field(999, 999, 'rspec_test_dyn', :type => 4, :scale => 10, :offset => 10, :ref_field_name => nil, :ref_field_values => nil)
      end

      it "adds field data" do
        expect(described_class.get_field(999, 999)).to be_a(Hash)
        expect(described_class.get_field(999, 999)).to eql({ :name => 'rspec_test', :scale => 100, :units => 'm'})
      end
      
      it 'adds dynamic field data' do
        expect(described_class.get_dynamic_fields(999, 999)).to be_a(Hash)
        expect(described_class.get_dynamic_fields(999, 999)).to eql({ :rspec_test_dyn => {:type => 4, :scale => 10, :offset => 10, :ref_field_name => nil, :ref_field_values => nil} })
      end
    end
  end

  describe ".get_field" do
    it "returns nil if no field exists" do
      expect(described_class.get_field(100,101)).to be_nil
    end
  end

  describe '.get_dynamic_field' do
    it 'returns nil if no dynamic field exists' do
      described_class.add_field(100, 100, 'rspec')
      expect(described_class.get_dynamic_fields(100, 100)).to be_nil
    end
  end

  describe ".add_name" do
    it "adds a name" do
      described_class.add_name(20, 'record')
      expect(described_class.get_name(20)).to eql('record')
    end
  end

  describe ".get_name" do
    it "returns nil if no name exists" do
      expect(described_class.get_name(100)).to be_nil
    end
  end
end