Create construct graph svg with hard-coded parameters

spec/presenters/construct_graph_row_presenter_spec.rb

@@ -0,0 +1,119 @@
+require 'rails_helper'
+
+RSpec.describe "construct graph row presenter" do
+
+  let(:watch_low_benchmark) { 2.9 }
+  let(:growth_low_benchmark) { 3.1 }
+  let(:approval_low_benchmark) { 3.6 }
+  let(:ideal_low_benchmark) { 3.8 }
+
+  let(:construct) {
+    Construct.new(
+      title: 'Some Title',
+      watch_low_benchmark: watch_low_benchmark,
+      growth_low_benchmark: growth_low_benchmark,
+      approval_low_benchmark: approval_low_benchmark,
+      ideal_low_benchmark: ideal_low_benchmark
+    )
+  }
+
+  let(:presenter) {
+    ConstructGraphRowPresenter.new construct: construct, score: score
+  }
+
+  shared_examples_for 'construct_title' do
+    it('returns the construct title') do
+      expect(presenter.construct_title).to eq 'Some Title'
+    end
+  end
+
+  context('when the score is in the Ideal zone') do
+    let(:score) { 4.4 }
+
+    it_behaves_like 'construct_title'
+
+    it('returns the correct color') do
+      expect(presenter.bar_color).to eq ConstructGraphParameters::ZoneColor::IDEAL
+    end
+
+    it('returns a bar width equal to the approval zone width plus the proportionate ideal zone width') do
+      expect(presenter.bar_width).to eq 324
+    end
+
+    it('returns an x-offset of 0') do
+      expect(presenter.x_offset).to eq 0
+    end
+  end
+
+  context('when the score is in the Approval zone') do
+    let(:score) { 3.7 }
+
+    it_behaves_like 'construct_title'
+
+    it("returns the correct color") do
+      expect(presenter.bar_color).to eq ConstructGraphParameters::ZoneColor::APPROVAL
+    end
+
+    it('returns a bar width equal to the proportionate approval zone width') do
+      expect(presenter.bar_width).to eq 108
+    end
+
+    it('returns an x-offset of 0') do
+      expect(presenter.x_offset).to eq 0
+    end
+  end
+
+  context('when the score is in the Growth zone') do
+    let(:score) { 3.2 }
+
+    it_behaves_like 'construct_title'
+
+    it("returns the correct color") do
+      expect(presenter.bar_color).to eq ConstructGraphParameters::ZoneColor::GROWTH
+    end
+
+    it('returns a bar width equal to the proportionate growth zone width') do
+      expect(presenter.bar_width).to eq 29
+    end
+
+    it('returns an x-offset equal to the bar width') do
+      expect(presenter.x_offset).to eq 29
+    end
+  end
+
+  context('when the score is in the Watch zone') do
+    let(:score) { 3.0 }
+
+    it_behaves_like 'construct_title'
+
+    it("returns the correct color") do
+      expect(presenter.bar_color).to eq ConstructGraphParameters::ZoneColor::WATCH
+    end
+
+    it('returns a bar width equal to the proportionate watch zone width plus the growth zone width') do
+      expect(presenter.bar_width).to eq 216
+    end
+
+    it('returns an x-offset equal to the bar width') do
+      expect(presenter.x_offset).to be > 0
+    end
+  end
+
+  context('when the score is in the Warning zone') do
+    let(:score) { 2.8 }
+
+    it_behaves_like 'construct_title'
+
+    it("returns the correct color") do
+      expect(presenter.bar_color).to eq ConstructGraphParameters::ZoneColor::WARNING
+    end
+
+    it('returns a bar width equal to the proportionate warning zone width plus the watch & growth zone widths') do
+      expect(presenter.bar_width).to eq 424
+    end
+
+    it('returns an x-offset equal to the bar width') do
+      expect(presenter.x_offset).to eq 424
+    end
+  end
+end