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Prevent the test framework from being loaded in production mode

The test framework should not be autoloaded in production mode.  Before
this commit, the testing railtie would extend AS::TestCase.  This caused
AS::TestCase to be preloaded regardless of the environment in which we
were running.

This commit just moves the code that adds line filtering support in to
the test command where we actually execute the test runner.  That allows
us to maintain the line runner feature but only load the minimal amount
of code we need.
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tenderlove committed Oct 21, 2016
1 parent 54a5b99 commit 797f1dd63c68eb44c1af358d377cfef271e685c5
@@ -1,5 +1,6 @@
require "rails/command"
require "rails/test_unit/minitest_plugin"
require "rails/test_unit/line_filtering"

module Rails
module Command
@@ -11,6 +12,10 @@ def help # :nodoc:
def perform(*)
$LOAD_PATH << Rails::Command.root.join("test")

# Add test line filtering support for running test by line number
# via the command line.
ActiveSupport::TestCase.extend Rails::LineFiltering

Minitest.run_via[:rails] = true

require "active_support/testing/autorun"
@@ -1,5 +1,3 @@
require "rails/test_unit/line_filtering"

if defined?(Rake.application) && Rake.application.top_level_tasks.grep(/^(default$|test(:|$))/).any?
ENV["RAILS_ENV"] ||= "test"
@@ -13,10 +11,6 @@ class TestUnitRailtie < Rails::Railtie
c.integration_tool :test_unit

initializer "test_unit.line_filtering" do
ActiveSupport::TestCase.extend Rails::LineFiltering

rake_tasks do
load "rails/test_unit/testing.rake"
@@ -43,6 +43,15 @@ def test_should_run_file
assert_match "42", Dir.chdir(app_path) { `bin/rails runner "bin/count_users.rb"` }

def test_no_minitest_loaded_in_production_mode
app_file "bin/print_features.rb", <<-SCRIPT
p $LOADED_FEATURES.grep(/minitest/)
assert_match "[]", Dir.chdir(app_path) {
`RAILS_ENV=production bin/rails runner "bin/print_features.rb"`

def test_should_set_dollar_0_to_file
app_file "bin/dollar0.rb", <<-SCRIPT
puts $0

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