Improove gplot spec

Author: darthjee

spec/integration/arrtest_spec.rb

@@ -19,8 +19,8 @@
         plot.title  "Array Plot Example"
         plot.ylabel "x"
         plot.xlabel "x^2"
-        plot.set "term","postscript eps"
-        plot.set "out", "'#{path}'"
+        plot.set    "term","postscript eps"
+        plot.set    "out", "'#{path}'"
 
         x = (0..50).collect { |v| v.to_f }
         y = x.collect { |v| v ** 2 }

spec/lib/ruby_gnuplot/plot_spec.rb

@@ -2,29 +2,48 @@
   subject(:plot) { described_class.new }
 
   describe '#to_gplot' do
+    let(:expected_string) do
+      [
+        'set title "Array Plot Example"',
+        'set ylabel "x"',
+        'set xlabel "x^2"',
+        'set term postscript eps',
+        'set output "file.eps"',
+        ''
+      ].join("\n")
+    end
+
+
     context 'when nothing has been set' do
       it "returns an empty string" do
         expect(plot.to_gplot).to eq('')
       end
     end
 
     context 'when titles and labels have been set' do
-      let(:expected_string) do
-        [
-          'set title "Array Plot Example"',
-          'set ylabel "x"',
-          'set xlabel "x^2"',
-          ''
-        ].join("\n")
-      end
-
       before do
         plot.title  "Array Plot Example"
         plot.ylabel "x"
         plot.xlabel "x^2"
+        plot.term   "postscript eps"
+        plot.output "file.eps"
+      end
+
+      it "wraps strings with quotes when needed" do
+        expect(plot.to_gplot).to eq(expected_string)
+      end
+    end
+
+    context 'when variables are set throgh set call' do
+      before do
+        plot.set "title",  "Array Plot Example"
+        plot.set "ylabel", "x"
+        plot.set "xlabel", "x^2"
+        plot.set "term",   "postscript eps"
+        plot.set "output", "file.eps"
       end
 
-      it "sets title and axis labels" do
+      it "wraps strings with quotes when needed" do
         expect(plot.to_gplot).to eq(expected_string)
       end
     end