Improving the coverage report for view.rb file

.rubocop.yml

@@ -2,7 +2,6 @@ AllCops:
   Include:
     - 'lib/**/*'
   Exclude:
-    # - 'daru-view.gemspec'
     - 'Rakefile'
     - 'Gemfile'
     - 'Guardfile'

lib/daru/view.rb

@@ -51,16 +51,14 @@ def table_library=(lib)
         case lib
         when :googlecharts
           # plot chart and table drawing
-          @plotting_library = lib
-          Daru::View::Plot.adapter = lib
-          Daru::View::Table.adapter = lib
+          @plotting_library = @table_library = lib
+          Daru::View::Plot.adapter = Daru::View::Table.adapter = lib
         when :datatables
           # only for table drawing
-          Daru::View::Table.adapter = lib
+          @table_library = Daru::View::Table.adapter = lib
         else
           raise ArgumentError, "Unsupported library #{lib}"
         end
-
         # When code is running in console/terminal then IRuby NameError.
         # Since IRuby methods can't work in console.
         begin

spec/plot_spec.rb

@@ -13,7 +13,11 @@
   let(:plot_df) { Daru::View::Plot.new(df, type: :line, x: :a, y: :c) }
   let(:plot_dv) { Daru::View::Plot.new(dv, type: :line) }
   context 'initialize' do
-    before { Daru::View.plotting_library = :nyaplot }
+    # before { Daru::View.plotting_library = :nyaplot }
+    context 'Default plotting_library is nyaplot' do
+      it { expect(Daru::View.plotting_library).to eq(:nyaplot)}
+    end
+
     context 'chart using DataFrame' do
       it { expect(plot_df).to be_a Daru::View::Plot }
       it { expect(plot_df.chart.class).to eq Nyaplot::Plot }

spec/view_spec.rb

@@ -0,0 +1,47 @@
+describe Daru::View, "Daru::View class basic methods" do
+  context "#plotting_library" do
+    context 'Set plotting library to googlecharts' do
+      before { Daru::View.plotting_library = :googlecharts}
+      it { expect(Daru::View.plotting_library).to eq(:googlecharts) }
+    end
+
+    context 'Set plotting library to highcharts' do
+      before { Daru::View.plotting_library = :highcharts}
+      it { expect(Daru::View.plotting_library).to eq(:highcharts) }
+    end
+
+    context 'Set plotting library to nyaplot' do
+      before { Daru::View.plotting_library = :nyaplot}
+      it { expect(Daru::View.plotting_library).to eq(:nyaplot) }
+    end
+
+    context 'Set plotting library to xyz, which is unsupported' do
+      it "should raise ArgumentError" do
+        expect{
+          Daru::View.plotting_library = :xyz_library
+        }.to raise_error(ArgumentError)
+      end
+    end
+  end
+
+  context "#table_library" do
+    context 'Set table library to googlecharts' do
+      before { Daru::View.table_library = :googlecharts}
+      it { expect(Daru::View.table_library).to eq(:googlecharts) }
+    end
+
+    context 'Set table library to datatables' do
+      before { Daru::View.table_library = :datatables}
+      it { expect(Daru::View.table_library).to eq(:datatables) }
+    end
+
+    context 'Set table library to xyz, which is unsupported' do
+      it "should raise ArgumentError" do
+        expect{
+          Daru::View.table_library = :xyz_library
+        }.to raise_error(ArgumentError)
+      end
+    end
+  end
+
+end