First pass at testing the command line tool.

test/command_line_test.rb

@@ -0,0 +1,96 @@
+require  File.dirname(__FILE__)+'/test_helper'
+require 'fileutils'
+require 'compass'
+require 'compass/exec'
+
+class CommandLineTest < Test::Unit::TestCase
+  include Compass::TestCaseHelper
+  def test_basic_install
+    within_tmp_directory do
+      compass "basic"
+      assert File.exists?("basic/src/screen.sass")
+      assert File.exists?("basic/stylesheets/screen.css")
+      assert_action_performed :directory, "basic/"
+      assert_action_performed    :create, "basic/src/screen.sass"
+      assert_action_performed   :compile, "basic/src/screen.sass"
+      assert_action_performed    :create, "basic/stylesheets/screen.css"
+    end
+  end
+
+  def test_framework_installs
+    Compass::Frameworks::ALL.each do |framework|
+      within_tmp_directory do
+        compass *%W(--framework #{framework.name} #{framework.name}_project)
+        assert File.exists?("#{framework.name}_project/src/screen.sass")
+        assert File.exists?("#{framework.name}_project/stylesheets/screen.css")
+        assert_action_performed :directory, "#{framework.name}_project/"
+        assert_action_performed    :create, "#{framework.name}_project/src/screen.sass"
+        assert_action_performed   :compile, "#{framework.name}_project/src/screen.sass"
+        assert_action_performed    :create, "#{framework.name}_project/stylesheets/screen.css"
+      end
+    end
+  end
+
+  def test_basic_update
+    within_tmp_directory do
+      compass "basic"
+      Dir.chdir "basic" do
+        compass
+        assert_action_performed :compile, "src/screen.sass"
+        assert_action_performed :overwrite, "stylesheets/screen.css"
+      end
+    end
+  end
+
+  # def test_rails_install
+  #   within_tmp_directory do
+  #     generate_rails_app("compass_rails")
+  #     Dir.chdir "compass_rails" do
+  #       compass "--rails"
+  #     end
+  #   end
+  # rescue LoadError
+  #   puts "Skipping rails test. Couldn't Load rails"
+  # end
+
+  protected
+  def compass(*arguments)
+    @last_result = capture_output do
+      execute *arguments
+    end
+  end
+
+  def assert_action_performed(action, path)
+    @last_result.split("\n").each do |line|
+      line = line.split
+      return if line.first == action.to_s && line.last == path
+    end
+    fail "Action #{action.inspect} was not performed on: #{path}"
+  end
+
+  def within_tmp_directory(dir = "tmp")
+    d = absolutize(dir)
+    FileUtils.mkdir_p(d)
+    Dir.chdir(d) do
+      yield
+    end
+  ensure
+    FileUtils.rm_r(d)
+  end
+
+  def capture_output
+    real_stdout, $stdout = $stdout, StringIO.new
+    yield
+    $stdout.string
+  ensure
+    $stdout = real_stdout
+  end
+
+  def execute(*arguments)
+    Compass::Exec::Compass.new(arguments).run!
+  end
+
+  # def generate_rails_app(name)
+  #   `rails #{name}`
+  # end
+end

test/compass_test.rb

@@ -3,6 +3,7 @@ require 'fileutils'
 require 'compass'
 
 class CompassTest < Test::Unit::TestCase
+  include Compass::TestCaseHelper
   def setup
     setup_fixtures :blueprint, :yui, :empty
     @original_options = Sass::Plugin.options
@@ -144,13 +145,4 @@ class CompassTest < Test::Unit::TestCase
     "#{stylesheet_fixtures(folder)}/saved"
   end
 
-  def absolutize(path)
-    if path.blank?
-      File.dirname(__FILE__)
-    elsif path[0] == ?/
-      "#{File.dirname(__FILE__)}#{path}"
-    else
-      "#{File.dirname(__FILE__)}/#{path}"
-    end
-  end
 end

test/test_helper.rb

@@ -31,3 +31,17 @@ require 'sass/plugin'
 
 
 require 'test/unit'
+
+module Compass
+  module TestCaseHelper
+    def absolutize(path)
+      if path.blank?
+        File.dirname(__FILE__)
+      elsif path[0] == ?/
+        "#{File.dirname(__FILE__)}#{path}"
+      else
+        "#{File.dirname(__FILE__)}/#{path}"
+      end
+    end
+  end
+end