Generate rspec and bogus specs

benchmark/.gitignore

@@ -1 +1,3 @@
 lib
+spec_rspec
+spec_bogus

benchmark/generate.rb

@@ -99,6 +99,115 @@ def call_#{d.as_var}(x)
   end
 end
 
+class BogusDSL
+  def configure
+    "require 'bogus/rspec'"
+  end
+
+  def dependency(klass)
+    "fake(#{klass.as_sym})"
+  end
+
+  def stub_method(dep)
+    "stub(#{dep.as_var}).foo(2) { :hello }"
+  end
+end
+
+class RspecDSL
+  def configure
+  end
+
+  def dependency(klass)
+    "let(#{klass.as_sym}) { double }"
+  end
+
+  def stub_method(dep)
+    "#{dep.as_var}.stub(:foo).with(2).and_return(:hello)"
+  end
+end
+
+class KlassSpecPresenter
+  attr_reader :klass, :dsl
+
+  def initialize(klass, dsl)
+    @klass = klass
+    @dsl = dsl
+  end
+
+  def body
+<<EOF
+require_relative '../spec_helper'
+
+describe #{klass.as_const} do
+#{fakes.join("\n")}
+
+  #{subject}
+
+#{examples.join("\n\n")}
+end
+EOF
+  end
+
+  def subject
+    deps = klass.dependencies.map(&:as_var)
+    "let(#{klass.as_sym}) { #{klass.as_const}.new(#{deps.join(", ")}) } "
+  end
+
+  def fakes
+    klass.dependencies.map do |d|
+      dsl.dependency(d)
+    end
+  end
+
+  def examples
+    klass.dependencies.map do |d|
+<<EOF
+  it "calls #{d.as_var}" do
+    #{dsl.stub_method(d)}
+
+    #{klass.as_var}.call_#{d.as_var}(1).should == :hello
+  end
+EOF
+    end
+  end
+end
+
+def save_manifest(classes)
+  requires = classes.map do |c|
+    %Q[require "klasses/#{c.as_var}"]
+  end
+  manifest = <<EOF
+$: << File.expand_path("..", __FILE__)
+
+#{requires.join("\n")}
+EOF
+
+  File.write("lib/project.rb", manifest)
+end
+
+def save_spec_helper(dsl, path)
+  File.write "#{path}/spec_helper.rb", <<EOF
+require_relative "../lib/project.rb"
+
+#{dsl.configure}
+
+RSpec.configure do |c|
+  c.color_enabled = true
+end
+EOF
+end
+
+def save_specs(dsl, path, classes)
+  FileUtils.rm_rf(path)
+  FileUtils.mkdir_p("#{path}/klasses")
+
+  save_spec_helper(dsl, path)
+  classes.each do |c|
+    spec_presenter = KlassSpecPresenter.new(c, dsl)
+    File.write("#{path}/klasses/#{c.as_var}_spec.rb", spec_presenter.body)
+  end
+end
+
 class_names = num_classes.times.map do
   alphabet.sample(5).join
 end
@@ -112,8 +221,15 @@ def call_#{d.as_var}(x)
 
 require 'fileutils'
 
+FileUtils.rm_rf("lib")
 FileUtils.mkdir_p("lib/klasses")
+
 classes.each do |k|
   body = KlassBodyPresenter.new(k).body
   File.write("lib/klasses/#{k.name}.rb", body)
 end
+
+save_manifest(classes)
+save_specs(BogusDSL.new, "spec_bogus", classes)
+save_specs(RspecDSL.new, "spec_rspec", classes)
+

benchmark/run

@@ -0,0 +1,4 @@
+#!/bin/bash
+
+time rspec spec_bogus
+time rspec spec_rspec