Add `rails test` command to run the test suite

To run the whole test suite:

    $ rails test

To run the test file(s):

    $ rails test test/unit/foo_test.rb [test/unit/bar_test.rb ...]

To run the test suite

    $ rails test [models,helpers,units,controllers,mailers,...]

For more information, see `rails test --help`.

This command will eventually replacing `rake test:*`, and `rake test`
command will actually invoking `rails test` instead.

1 files changed, 15 insertions, 0 deletions

diff --git a/railties/lib/rails/commands.rb b/railties/lib/rails/commands.rb
index aacde52cfc..c76af7d01f 100644
--- a/railties/lib/rails/commands.rb
+++ b/railties/lib/rails/commands.rb
@@ -5,6 +5,7 @@ aliases = {
   "d"  => "destroy",
   "c"  => "console",
   "s"  => "server",
+  "t"  => "test",
   "db" => "dbconsole",
   "r"  => "runner"
 }
@@ -16,6 +17,7 @@ The most common rails commands are:
  generate    Generate new code (short-cut alias: "g")
  console     Start the Rails console (short-cut alias: "c")
  server      Start the Rails server (short-cut alias: "s")
+ test        Running the test file (short-cut alias: "t")
  dbconsole   Start a console for the database specified in config/database.yml
              (short-cut alias: "db")
  new         Create a new Rails application. "rails new my_app" creates a
@@ -78,6 +80,19 @@ when 'server'
     server.start
   end
 
+when 'test'
+  $LOAD_PATH.unshift("./test")
+  require 'rails/commands/test_runner'
+  if ["-h", "--help"].include?(ARGV.first)
+    Rails::TestRunner.help_message
+    exit
+  else
+    require APP_PATH
+    Rails.application.require_environment!
+    Rails.application.load_tasks
+    Rails::TestRunner.start(ARGV)
+  end
+
 when 'dbconsole'
   require 'rails/commands/dbconsole'
   Rails::DBConsole.start