Enable Rails minitest plugin in our rake tasks

actioncable/Rakefile

@@ -10,6 +10,8 @@ task default: :test
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 Rake::TestTask.new do |t|
   t.libs << "test"
   t.test_files = FileList["#{__dir__}/test/**/*_test.rb"]

actionmailbox/Rakefile

@@ -6,6 +6,8 @@ require "rake/testtask"
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 Rake::TestTask.new do |t|
   t.libs << "test"
   t.pattern = "test/**/*_test.rb"

actionmailer/Rakefile

@@ -7,6 +7,8 @@ task default: [ :test ]
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 # Run the unit tests
 Rake::TestTask.new { |t|
   t.libs << "test"

actionpack/Rakefile

@@ -9,6 +9,8 @@ task default: :test
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 # Run the unit tests
 Rake::TestTask.new do |t|
   t.libs << "test"

actiontext/Rakefile

@@ -6,6 +6,8 @@ require "rake/testtask"
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 Rake::TestTask.new do |t|
   t.libs << "test"
   t.test_files = FileList["test/**/*_test.rb"].exclude("test/system/**/*", "test/dummy/**/*")

actionview/Rakefile

@@ -10,6 +10,8 @@ task default: :test
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 # Run the unit tests
 
 desc "Run all unit tests"

activejob/Rakefile

@@ -10,6 +10,8 @@ task test: "test:default"
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 namespace :test do
   desc "Run all adapter tests"
   task :default do

activemodel/Rakefile

@@ -6,6 +6,8 @@ task default: :test
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 Rake::TestTask.new do |t|
   t.libs << "test"
   t.test_files = FileList["#{__dir__}/test/cases/**/*_test.rb"]

activerecord/Rakefile

@@ -23,6 +23,8 @@ task default: :test
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 desc "Run mysql2, trilogy, sqlite, and postgresql tests"
 task :test do
   tasks = defined?(JRUBY_VERSION) ?

activestorage/Rakefile

@@ -4,6 +4,8 @@ require "bundler/setup"
 require "bundler/gem_tasks"
 require "rake/testtask"
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 Rake::TestTask.new do |t|
   t.libs << "app/controllers"
   t.libs << "test"

activesupport/Rakefile

@@ -6,6 +6,8 @@ task default: :test
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 Rake::TestTask.new do |t|
   t.pattern = "test/**/*_test.rb"
   t.warning = true

railties/Rakefile

@@ -7,6 +7,8 @@ task default: :test
 
 task :package
 
+ENV["RAILS_MINITEST_PLUGIN"] = "true"
+
 desc "Run all unit tests"
 task test: "test:isolated"
 

railties/lib/minitest/rails_plugin.rb

@@ -110,7 +110,7 @@ def self.plugin_rails_options(opts, options)
   # minitest-reporters, maxitest, and others.
   def self.plugin_rails_init(options)
     # Don't mess with Minitest unless RAILS_ENV is set
-    return unless ENV["RAILS_ENV"]
+    return unless ENV["RAILS_ENV"] || ENV["RAILS_MINITEST_PLUGIN"]
 
     unless options[:full_backtrace]
       # Plugin can run without Rails loaded, check before filtering.