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Test installer #206

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Nov 30, 2023
Merged

Test installer #206

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63 changes: 63 additions & 0 deletions test/installer_test.rb
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Original file line number Diff line number Diff line change
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require "test_helper"
require "rails/generators/rails/app/app_generator"

class InstallerTest < ActiveSupport::TestCase
include ActiveSupport::Testing::Isolation

test "installer task" do
with_new_rails_app do
run_command("bin/rails", "importmap:install")

assert_match %r{<%= javascript_importmap_tags %>.*</head>}m, File.read("app/views/layouts/application.html.erb")
assert_match "// ", File.read("app/javascript/application.js")
assert_equal 0, File.size("vendor/javascript/.keep")
assert_equal File.read("#{__dir__}/../lib/install/config/importmap.rb"), File.read("config/importmap.rb")
assert_equal File.read("#{__dir__}/../lib/install/bin/importmap"), File.read("bin/importmap")
assert_equal 0700, File.stat("bin/importmap").mode & 0700

if defined?(Sprockets)
manifest = File.read("app/assets/config/manifest.js")
assert_match "//= link_tree ../../javascript .js", manifest
assert_match "//= link_tree ../../../vendor/javascript .js", manifest
end
end
end

test "installer task when no application layout" do
with_new_rails_app do
FileUtils.rm("app/views/layouts/application.html.erb")
out, err = run_command("bin/rails", "importmap:install")
assert_match "Add <%= javascript_importmap_tags %> within the <head> tag", out
end
end

private
def with_new_rails_app
# Unset testing dummy app so app generator doesn't get confused in Rails 6.1 and 7.0.
Rails.app_class = nil
Rails.application = nil

Dir.mktmpdir do |tmpdir|
app_dir = "#{tmpdir}/my_cool_app"

Rails::Generators::AppGenerator.start([app_dir, "--quiet", "--skip-bundle", "--skip-bootsnap"])

Dir.chdir(app_dir) do
gemfile = File.read("Gemfile")
gemfile.gsub!(/^gem "importmap-rails".*/, "")
gemfile << %(gem "importmap-rails", path: #{File.expand_path("..", __dir__).inspect}\n)
File.write("Gemfile", gemfile)

run_command("bundle", "install")

yield
end
end
end

def run_command(*command)
Bundler.with_unbundled_env do
capture_subprocess_io { system(*command, exception: true) }
end
end
end