Contents

require 'spec_helper'

describe Danica do
  describe '.build' do
    let(:result) { described_class.build(&block) }

    context 'when creating a sum' do
      let(:block) do
        proc { sum(1, 2) }
      end

      it 'returns the expected sum' do
        expect(result).to eq(Danica::Sum.new(1,2))
      end
    end

    context 'when creating a power of sum and product' do
      let(:block) do
        proc { power(sum(1, 2), product(2,3)) }
      end
      let(:expected) do
        Danica::Power.new(
          Danica::Sum.new(1, 2),
          Danica::Product.new(2, 3)
        )
      end

      it 'returns the expected power' do
        expect(result).to eq(expected)
      end
    end

    context 'when defining a function' do
      let(:block) do
        proc do
          function(:x) do
            power(x, 2)
          end
        end
      end
      let(:function) do
        Danica::Function.build(:x) do
          Danica::Power.new(x, 2)
        end.new
      end

      it 'returns the expected function with variables' do
        expect(result.variables_hash).to eq(function.variables_hash)
      end

      it 'returns the expected function with block' do
        expect(result.to_tex).to eq(function.to_tex)
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
danica-2.2.1	spec/lib/danica_spec.rb
danica-2.2.0	spec/lib/danica_spec.rb