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require 'isolation/abstract_unit'
module ApplicationTests
class TestTest < ActiveSupport::TestCase
include ActiveSupport::Testing::Isolation
def setup
build_app
boot_rails
end
def teardown
teardown_app
end
test "truth" do
app_file 'test/unit/foo_test.rb', <<-RUBY
require 'test_helper'
class FooTest < ActiveSupport::TestCase
def test_truth
assert true
end
end
RUBY
assert_successful_test_run 'unit/foo_test.rb'
end
test "integration test" do
controller 'posts', <<-RUBY
class PostsController < ActionController::Base
end
RUBY
app_file 'app/views/posts/index.html.erb', <<-HTML
Posts#index
HTML
app_file 'test/integration/posts_test.rb', <<-RUBY
require 'test_helper'
class PostsTest < ActionDispatch::IntegrationTest
def test_index
get '/posts'
assert_response :success
assert_template "index"
end
end
RUBY
assert_successful_test_run 'integration/posts_test.rb'
end
test "enable full backtraces on test failures" do
app_file 'test/unit/failing_test.rb', <<-RUBY
require 'test_helper'
class FailingTest < ActiveSupport::TestCase
def test_failure
raise "fail"
end
end
RUBY
output = run_test_file('unit/failing_test.rb', env: { "BACKTRACE" => "1" })
assert_match %r{/app/test/unit/failing_test\.rb}, output
end
test "migrations" do
output = script('generate model user name:string')
version = output.match(/(\d+)_create_users\.rb/)[1]
app_file 'test/models/user_test.rb', <<-RUBY
require 'test_helper'
class UserTest < ActiveSupport::TestCase
test "user" do
User.create! name: "Jon"
end
end
RUBY
app_file 'db/schema.rb', ''
assert_unsuccessful_run "models/user_test.rb", "Migrations are pending"
app_file 'db/schema.rb', <<-RUBY
ActiveRecord::Schema.define(version: #{version}) do
create_table :users do |t|
t.string :name
end
end
RUBY
app_file 'config/initializers/disable_maintain_test_schema.rb', <<-RUBY
Rails.application.config.active_record.maintain_test_schema = false
RUBY
assert_unsuccessful_run "models/user_test.rb", "Could not find table 'users'"
File.delete "#{app_path}/config/initializers/disable_maintain_test_schema.rb"
result = assert_successful_test_run('models/user_test.rb')
assert !result.include?("create_table(:users)")
end
private
def assert_unsuccessful_run(name, message)
result = run_test_file(name)
assert_not_equal 0, $?.to_i
assert result.include?(message)
result
end
def assert_successful_test_run(name)
result = run_test_file(name)
assert_equal 0, $?.to_i, result
result
end
def run_test_file(name, options = {})
ruby '-Itest', "#{app_path}/test/#{name}", options
end
def ruby(*args)
options = args.extract_options!
env = options.fetch(:env, {})
env["RUBYLIB"] = $:.join(':')
Dir.chdir(app_path) do
`#{env_string(env)} #{Gem.ruby} #{args.join(' ')} 2>&1`
end
end
def env_string(variables)
variables.map do |key, value|
"#{key}='#{value}'"
end.join " "
end
end
end
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