Setup for Travis CI

.rspec

@@ -0,0 +1,3 @@
+--format documentation
+--color
+--require spec_helper

.travis.yml

@@ -0,0 +1,18 @@
+language:
+  ruby
+
+rvm:
+  - '2.0'
+  - '2.1'
+  - '2.2'
+  - '2.3.0'
+  - '2.4.0'
+
+script:
+  - bundle exec rspec
+  - bundle exec rubocop
+
+install:
+  - gem install bundler
+  - gem install rainbow -v '2.2.1'
+  - bundle install

Gemfile

@@ -1,2 +1,8 @@
 source 'https://rubygems.org'
+
 gemspec
+
+group :test do
+ 	gem 'rake'
+	gem 'rspec'
+end

Rakefile

@@ -1,5 +1,18 @@
+require "bundler/gem_tasks"
+require "rake"
+
+require 'bundler/setup'
+require 'rubygems/tasks'
+Gem::Tasks.new
+
 require 'rspec/core/rake_task'
-require 'rake/extensiontask'
+RSpec::Core::RakeTask.new
+
+require 'rubocop/rake_task'
+RuboCop::RakeTask.new
+
+desc 'Default: run unit specs.'
+task :default => %w[spec rubocop]
 
 gemspec = eval(IO.read('rubyplot.gemspec'))
 

lib/rubyplot.rb

@@ -12,13 +12,12 @@
 require 'rubyplot/subplot'
 require 'rubyplot/spi'
 
-require 'grruby.so'
 require 'rubyplot/gr_wrapper'
 
 module Rubyplot
   def self.backend
     b = ENV['RUBYPLOT_BACKEND']
-    return b.to_sym if %w[magick gr].include?(b)
+    return b.to_sym if %w[magick ].include?(b)
 
     :magick
   end

lib/rubyplot/artist/axes.rb

@@ -246,10 +246,12 @@ def with_backend(plot_type, *args)
 
       # Figure out the co-ordinates of the title text w.r.t Axes.
       def configure_title
+
         @texts << Rubyplot::Artist::Text.new(
           @title, self, abs_x: abs_x + width / 2, abs_y: abs_y + @title_margin,
           font: @font, color: @font_color,
           pointsize: @title_font_size, internal_label: 'axes title.'
+
         )
       end
 

lib/rubyplot/artist/axis/base.rb

@@ -23,11 +23,13 @@ def initialize axes
           @lines = []
         end
 
+
         def draw
           configure_title
           @lines.each(&:draw)
           @texts.each(&:draw)
         end
+
       end
       # class Base
     end

lib/rubyplot/artist/text.rb

@@ -7,11 +7,13 @@ class Text < Artist::Base
 
       # rubocop:disable Metrics/ParameterLists
       def initialize(text, owner, abs_x:, abs_y:,font: nil,
+
                      color: '#000000',pointsize:,stroke: 'transparent',
                      internal_label: '', rotation: nil,
                      weight: nil, gravity: nil
                     )
         super(owner.backend, abs_x, abs_y)
+
         @text = text
         @owner = owner
         @font = font

lib/rubyplot/backend/magick_wrapper.rb

@@ -16,6 +16,8 @@ def initialize
         @draw = Magick::Draw.new
       end
 
+
+
       # Height in pixels of particular text.
       # @param text [String] Text to be measured.
       def text_height(text, font, font_size)

spec/axes_spec.rb

@@ -484,5 +484,3 @@
     end # context "#x_ticks="
   end # Rubyplot::Axes
 end # describe backends
-
-

spec/spec_helper.rb

@@ -1,6 +1,8 @@
 require 'fileutils'
 require 'pry'
 require 'rubyplot'
+require 'rspec'
+require 'rmagick'
 
 TEMP_DIR = "temp/"
 FIXTURES_DIR = "fixtures/"