1 files changed, 37 insertions, 0 deletions
diff --git a/railties/lib/rails/commands/test/test_command.rb b/railties/lib/rails/commands/test/test_command.rb
new file mode 100644
index 0000000000..00ea9ac4a6
--- /dev/null
+++ b/railties/lib/rails/commands/test/test_command.rb
@@ -0,0 +1,37 @@
+# frozen_string_literal: true
+
+require "rails/command"
+require "rails/test_unit/runner"
+require "rails/test_unit/reporter"
+
+module Rails
+  module Command
+    class TestCommand < Base # :nodoc:
+      no_commands do
+        def help
+          say "Usage: #{Rails::TestUnitReporter.executable} [options] [files or directories]"
+          say ""
+          say "You can run a single test by appending a line number to a filename:"
+          say ""
+          say "    #{Rails::TestUnitReporter.executable} test/models/user_test.rb:27"
+          say ""
+          say "You can run multiple files and directories at the same time:"
+          say ""
+          say "    #{Rails::TestUnitReporter.executable} test/controllers test/integration/login_test.rb"
+          say ""
+          say "By default test failures and errors are reported inline during a run."
+          say ""
+
+          Minitest.run(%w(--help))
+        end
+      end
+
+      def perform(*)
+        $LOAD_PATH << Rails::Command.root.join("test").to_s
+
+        Rails::TestUnit::Runner.parse_options(ARGV)
+        Rails::TestUnit::Runner.run(ARGV)
+      end
+    end
+  end
+end