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DEV: Stop building test assets in production under Embroider (#23388) 

Until now, we have allowed testing themes in production environments via `/theme-qunit`. This was made possible by hacking the ember-cli build so that it would create the `tests.js` bundle in production. However, this is fundamentally problematic because a number of test-specific things are still optimized out of the Ember build in production mode. It also makes asset compilation significantly slower, and makes it more difficult for us to update our build pipeline (e.g. to introduce Embroider).

This commit removes the ability to run qunit tests in production builds of the JS app when the Embdroider flag is enabled. If a production instance of Discourse exists exclusively for the development of themes (e.g. discourse.theme-creator.io) then they can add `EMBER_ENV: development` to their `app.yml` file. This will build the entire app in development mode, and has a significant performance impact. This must not be used for real production sites.

This commit also refactors many of the request specs into system specs. This means that the tests are guaranteed to have Ember assets built, and is also a better end-to-end test than simply checking for the presence of certain `<script>` tags in the HTML.
This commit is contained in:
David Taylor 2023-09-11 09:12:37 +01:00 committed by GitHub
parent d28f113ce0
commit 9667485951
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 57 additions and 116 deletions
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14
app/assets/javascripts/discourse/ember-cli-build.js
View File

@ -103,12 +103,9 @@ module.exports = function (defaults) {
"ember-cli-terser": {
enabled: isProduction,
exclude: [
"**/test-*.js",
"**/core-tests*.js",
"**/highlightjs/*",
"**/javascripts/*",
],
exclude:
["**/highlightjs/*", "**/javascripts/*"] +
(isEmbroider ? [] : ["**/test-*.js", "**/core-tests*.js"]),
},
"ember-cli-babel": {
@ -119,8 +116,9 @@ module.exports = function (defaults) {
plugins: [require.resolve("deprecation-silencer")],
},
// We need to build tests in prod for theme tests
tests: true,
// Was previously true so that we could run theme tests in production
// but we're moving away from that as part of the Embroider migration
tests: isEmbroider ? !isProduction : true,
vendorFiles: {
// Freedom patch - includes bug fix and async stack support

2
app/controllers/qunit_controller.rb
View File

@ -7,6 +7,8 @@ class QunitController < ApplicationController
def theme
raise Discourse::NotFound.new if !can_see_theme_qunit?
@has_test_bundle = EmberCli.has_tests?
param_key = nil
@suggested_themes = nil
if (id = get_param(:id)).present?

11
app/views/qunit/theme.html.erb
View File

@ -5,7 +5,7 @@
<%= discourse_color_scheme_stylesheets %>
<meta name="color-scheme" content="light dark">
<%- if !@suggested_themes %>
<%- if @has_test_bundle && !@suggested_themes %>
<%= preload_script "locales/#{I18n.locale}" %>
<%= preload_script "vendor" %>
<%= preload_script "test-support" %>
@ -44,7 +44,10 @@
<%- end %>
</head>
<body>
<%- if @suggested_themes %>
<%- if !@has_test_bundle %>
This is a production installation of Discourse, and cannot be used for theme testing.
For more information, see <a href="https://meta.discourse.org/t/66857">this guide</a>.
<% elsif @suggested_themes %>
<h2>Theme QUnit Test Runner</h2>
<%- if @suggested_themes.size == 0 %>
@ -55,9 +58,7 @@
<h4><%= link_to name, theme_qunit_path(id: id) %></h4>
<%- end %>
<%- end %>
<%- end %>
<%- if !@suggested_themes %>
<% else %>
<%= preload_script "scripts/discourse-test-listen-boot" %>
<%= preload_script "scripts/discourse-boot" %>
<%- end %>

4
lib/ember_cli.rb
View File

@ -103,4 +103,8 @@ module EmberCli
chunk_infos
end
def self.has_tests?
File.exist?("#{dist_dir}/tests/index.html")
end
end

4
lib/tasks/assets.rake
View File

@ -9,13 +9,15 @@ task "assets:precompile:before": "environment" do
end
if ENV["EMBER_CLI_COMPILE_DONE"] != "1"
compile_command = "yarn --cwd app/assets/javascripts/discourse run ember build -prod"
compile_command = "yarn --cwd app/assets/javascripts/discourse run ember build"
if check_node_heap_size_limit < 1024
STDERR.puts "Detected low Node.js heap_size_limit. Using --max-old-space-size=1024."
compile_command = "NODE_OPTIONS='--max-old-space-size=1024' #{compile_command}"
end
compile_command = "EMBER_ENV=production #{compile_command}" if ENV["EMBER_ENV"].nil?
only_assets_precompile_remaining = (ARGV.last == "assets:precompile")
if only_assets_precompile_remaining

122
spec/requests/qunit_controller_spec.rb
View File

@ -1,108 +1,30 @@
# frozen_string_literal: true
RSpec.describe QunitController do
describe "#theme" do
let(:theme) { Fabricate(:theme, name: "main-theme") }
let(:component) { Fabricate(:theme, component: true, name: "enabled-component") }
let(:disabled_component) do
Fabricate(:theme, component: true, enabled: false, name: "disabled-component")
end
let(:theme_without_tests) { Fabricate(:theme, name: "no-tests-guy") }
def production_sign_in(user)
# We need to call sign_in before stubbing the method because SessionController#become
# checks for the current env when the file is loaded.
# We need to make sure become is called once before stubbing, or the method
# wont'be available for future tests if this one runs first.
sign_in(user) if user
Rails.env.stubs(:production?).returns(true)
end
before do
Theme.destroy_all
theme.set_default!
component.add_relative_theme!(:parent, theme)
disabled_component.add_relative_theme!(:parent, theme)
[theme, component, disabled_component].each do |t|
t.set_field(
target: :extra_js,
type: :js,
name: "discourse/initializers/my-#{t.id}-initializer.js",
value: "console.log(#{t.id});",
)
t.set_field(
target: :tests_js,
type: :js,
name: "acceptance/some-test-#{t.id}.js",
value: "assert.ok(#{t.id});",
)
t.save!
end
end
it "hides page for regular users in production" do
production_sign_in(Fabricate(:user))
get "/theme-qunit"
expect(response.status).to eq(404)
end
context "with non-admin users on production" do
before do
# We need to call sign_in before stubbing the method because SessionController#become
# checks for the current env when the file is loaded.
# We need to make sure become is called once before stubbing, or the method
# wont'be available for future tests if this one runs first.
sign_in(Fabricate(:user))
Rails.env.stubs(:production?).returns(true)
end
it "hides page for anon in production" do
production_sign_in(nil)
get "/theme-qunit"
expect(response.status).to eq(404)
end
it "regular users cannot see the page" do
get "/theme-qunit"
expect(response.status).to eq(404)
end
it "anons cannot see the page" do
sign_out
get "/theme-qunit"
expect(response.status).to eq(404)
end
end
context "with admin users" do
before { sign_in(Fabricate(:admin)) }
context "when no theme is specified" do
it "renders a list of themes and components that have tests" do
get "/theme-qunit"
expect(response.status).to eq(200)
[theme, component, disabled_component].each do |t|
expect(response.body).to include(t.name)
expect(response.body).to include("/theme-qunit?id=#{t.id}")
end
expect(response.body).not_to include(theme_without_tests.name)
expect(response.body).not_to include("/theme-qunit?id=#{theme_without_tests.id}")
end
end
it "can specify theme by id" do
get "/theme-qunit?id=#{theme.id}"
expect(response.status).to eq(200)
expect(response.body).to include("/theme-javascripts/tests/#{theme.id}-")
end
it "can specify theme by name" do
get "/theme-qunit?name=#{theme.name}"
expect(response.status).to eq(200)
expect(response.body).to include("/theme-javascripts/tests/#{theme.id}-")
end
it "can specify theme by url" do
theme.build_remote_theme(remote_url: "git@github.com:discourse/discourse.git").save!
theme.save!
get "/theme-qunit?url=#{theme.remote_theme.remote_url}"
expect(response.status).to eq(200)
expect(response.body).to include("/theme-javascripts/tests/#{theme.id}-")
end
it "themes qunit page includes all the JS/CSS it needs" do
get "/theme-qunit?id=#{theme.id}"
expect(response.status).to eq(200)
expect(response.body).to include("/stylesheets/color_definitions_base_")
expect(response.body).to include("/stylesheets/desktop_")
expect(response.body).to include("* https://qunitjs.com/") # inlined QUnit CSS
expect(response.body).to include("/assets/locales/en.js")
expect(response.body).to include("/test-support.js")
expect(response.body).to include("/test-site-settings.js")
expect(response.body).to include("/assets/markdown-it-bundle.js")
expect(response.body).to include("/assets/admin.js")
expect(response.body).to match(/\/theme-javascripts\/\h{40}\.js/)
expect(response.body).to include("/theme-javascripts/tests/#{theme.id}-")
end
end
it "shows page for admin in production" do
production_sign_in(Fabricate(:admin))
get "/theme-qunit"
expect(response.status).to eq(200)
end
end

16
spec/system/theme_qunit_spec.rb
View File

@ -1,8 +1,9 @@
# frozen_string_literal: true
describe "Theme qunit testing", type: :system do
let!(:theme_without_tests) { Fabricate(:theme, name: "no-tests-guy") }
let!(:theme_with_test) do
t = Fabricate(:theme, name: "My Theme")
t = Fabricate(:theme, name: "Theme With Tests")
t.set_field(target: :tests_js, type: :js, name: "acceptance/some-test.js", value: <<~JS)
import { module, test } from "qunit";
@ -12,16 +13,27 @@ describe "Theme qunit testing", type: :system do
});
});
JS
t.build_remote_theme(remote_url: "https://example.com/mytheme")
t.save!
t
end
it "can run theme tests correctly" do
it "lists themes and can run tests by id, name and url" do
visit "/theme-qunit"
expect(page).to have_css("a[href^='/theme-qunit?id=']", count: 1)
find("a[href=\"/theme-qunit?id=#{theme_with_test.id}\"]").click
success_count = find("#qunit-testresult-display .passed").text
expect(success_count).to eq("1")
visit "/theme-qunit?name=#{theme_with_test.name}"
success_count = find("#qunit-testresult-display .passed").text
expect(success_count).to eq("1")
visit "/theme-qunit?url=#{theme_with_test.remote_theme.remote_url}"
success_count = find("#qunit-testresult-display .passed").text
expect(success_count).to eq("1")
end
end