Sandbox fixture projects and builds in a temp working directory

Author: yoannmoinet

packages/tests/README.md

@@ -82,7 +82,7 @@ describe('My very awesome plugin', () => {
 We currently support `webpack4`, `webpack5`, `esbuild`, `rollup` and `vite`.<br/>
 So we need to ensure that our plugin works everywhere.
 
-When you use `runBundlers()` in your setup (usually `beforeAll()`), it will run the build of [a very basic default mock project](/packages/tests/src/_jest/fixtures/main.js).<br/>
+When you use `runBundlers()` in your setup (usually `beforeAll()`), it will run the build of [a very basic default mock project](/packages/tests/src/_jest/fixtures/easy_project/main.js).<br/>
 Since it's building in a seeded directory, to avoid any collision, it will also return a cleanup function, that you'll need to use in your teardown (usually `afterAll()`).
 
 During development, you may want to target a specific bundler, to reduce noise from the others.<br/>
@@ -124,7 +124,6 @@ It will return the array of entries it created.
 Here's how you'd go with it:
 
 ```typescript
-import { getWebpack4Entries } from '@dd/tests/_jest/helpers/xpackConfigs';
 import { generateProject } from '@dd/tests/_jest/helpers/generateMassiveProject';
 import { defaultPluginOptions } from '@dd/tests/_jest/helpers/mocks';
 import { runBundlers } from '@dd/tests/_jest/helpers/runBundlers';
@@ -145,11 +144,7 @@ describe('Some very massive project', () => {
             },
             // Mode production makes the build waaaaayyyyy too slow.
             webpack5: { mode: 'none', entry: entries },
-            webpack4: {
-                mode: 'none',
-                // Webpack4 needs some help for pnp resolutions.
-                entry: getWebpack4Entries(entries),
-            },
+            webpack4: { mode: 'none', entry: entries },
         };
 
         cleanup = await runBundlers(defaultPluginOptions, bundlerOverrides);

packages/tests/src/_jest/fixtures/.gitignore

@@ -1 +1,11 @@
 massiveProject
+yarn-error.log
+.yarn/*
+!.yarn/cache
+!.yarn/patches
+!.yarn/releases
+!.yarn/plugins
+!.vscode
+
+node_modules/
+dist/