Add feature for testing minitest

Author: adam12

features/minitest_basic.feature

@@ -0,0 +1,18 @@
+Feature:
+
+  Scenario:
+    Given SimpleCov for Minitest is configured with:
+      """
+      require 'simplecov'
+      SimpleCov.start
+      """
+
+    When I open the coverage report generated with `bundle exec rake minitest`
+    Then I should see the groups:
+      | name      | coverage | files |
+      | All Files | 80.0%    | 1     |
+
+    And I should see the source files:
+      | name                                    | coverage |
+      | lib/faked_project/some_class.rb         | 80.0 %   |
+

lib/simplecov/defaults.rb

@@ -21,12 +21,12 @@
 # Gotta stash this a-s-a-p, see the CommandGuesser class and i.e. #110 for further info
 SimpleCov::CommandGuesser.original_run_command = "#{$PROGRAM_NAME} #{ARGV.join(' ')}"
 
-at_exit do
-  if defined?(Minitest)
-    Minitest.after_run do
-      simplecov_at_exit
-    end
-  else
+if defined?(Minitest)
+  Minitest.after_run do
+    simplecov_at_exit
+  end
+else
+  at_exit do
     simplecov_at_exit
   end
 end

spec/faked_project/Rakefile

@@ -6,3 +6,9 @@ Rake::TestTask.new(:test) do |test|
   test.test_files = FileList["test/**/*_test.rb"].sort
   test.verbose = true
 end
+
+Rake::TestTask.new(:minitest) do |test|
+  test.libs << "minitest"
+  test.test_files = FileList["minitest/**/*_test.rb"].sort
+  test.verbose = true
+end

spec/faked_project/minitest/some_test.rb

@@ -0,0 +1,16 @@
+require "test_helper"
+require "faked_project/some_class"
+
+class SomeTest < Minitest::Test
+  def setup
+    @instance = SomeClass.new("foo")
+  end
+
+  def test_reverse
+    assert_equal "oof", @instance.reverse
+  end
+
+  def test_comparison
+    assert @instance.compare_with("foo")
+  end
+end

spec/faked_project/minitest/test_helper.rb

@@ -0,0 +1,11 @@
+require "bundler/setup"
+
+# We're injecting simplecov_config via aruba in cucumber here
+# depending on what the test case is...
+begin
+  require File.join(File.dirname(__FILE__), "simplecov_config")
+rescue LoadError
+  $stderr.puts "No SimpleCov config file found!"
+end
+
+require "minitest/autorun"