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require "test_helper"
require "webpacker/dev_server_runner"
class DevServerRunnerTest < Webpacker::Test
def setup
@original_node_env, ENV["NODE_ENV"] = ENV["NODE_ENV"], "development"
@original_rails_env, ENV["RAILS_ENV"] = ENV["RAILS_ENV"], "development"
end
def teardown
ENV["NODE_ENV"] = @original_node_env
ENV["RAILS_ENV"] = @original_rails_env
end
def test_run_cmd_via_node_modules
cmd = ["#{test_app_path}/node_modules/.bin/webpack-dev-server", "--config", "#{test_app_path}/config/webpack/development.js"]
verify_command(cmd, use_node_modules: true)
end
def test_run_cmd_via_yarn
cmd = ["yarnpkg", "webpack-dev-server", "--config", "#{test_app_path}/config/webpack/development.js"]
verify_command(cmd, use_node_modules: false)
end
private
def test_app_path
File.expand_path("test_app", __dir__)
end
def verify_command(cmd, use_node_modules: true)
cwd = Dir.pwd
Dir.chdir(test_app_path)
klass = Webpacker::DevServerRunner
instance = klass.new([])
mock = Minitest::Mock.new
mock.expect(:call, nil, [Webpacker::Compiler.env, *cmd])
klass.stub(:new, instance) do
instance.stub(:node_modules_bin_exist?, use_node_modules) do
Kernel.stub(:exec, mock) { klass.run([]) }
end
end
mock.verify
ensure
Dir.chdir(cwd)
end
end
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