add integration test for yarn workspaces

Author: ds300

integration-tests/yarn-workspaces/add-postinstall-commands.js

@@ -0,0 +1,24 @@
+const fs = require("fs")
+
+function addPostinstall(packageJsonPath) {
+  const json = JSON.parse(fs.readFileSync(packageJsonPath))
+  fs.writeFileSync(
+    packageJsonPath,
+    JSON.stringify(
+      {
+        ...json,
+        scripts: {
+          ...json.scripts,
+          postinstall: "yarn patch-package",
+        },
+      },
+      null,
+      "  ",
+    ),
+  )
+}
+
+Array.prototype.slice
+  .call(process.argv, 2)
+  .filter(x => !x.match(/node_modules/))
+  .map(addPostinstall)

integration-tests/yarn-workspaces/package.json

@@ -0,0 +1,19 @@
+{
+  "name": "yarn-workspaces",
+  "version": "1.0.0",
+  "private": true,
+  "description": "integration test for patch-package",
+  "main": "index.js",
+  "author": "",
+  "license": "ISC",
+  "workspaces": {
+    "packages": [
+      "packages/*"
+    ]
+  },
+  "dependencies": {
+    "postinstall-postinstall": "^2.0.0",
+    "replace": "^1.1.0",
+    "rimraf": "^2.6.3"
+  }
+}

integration-tests/yarn-workspaces/packages/a/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "a",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "scripts": {
+    "patch-package": "../../node_modules/.bin/patch-package" 
+  },
+  "dependencies": {
+    "left-pad": "^1.3.0",
+    "postinstall-postinstall": "^2.0.0"
+  }
+}

integration-tests/yarn-workspaces/packages/b/package.json

@@ -0,0 +1,13 @@
+{
+  "name": "b",
+  "version": "1.0.0",
+  "main": "index.js",
+  "license": "MIT",
+  "scripts": {
+    "patch-package": "../../node_modules/.bin/patch-package" 
+  },
+  "dependencies": {
+    "left-pad": "1.2.0",
+    "postinstall-postinstall": "^2.0.0"
+  }
+}

integration-tests/yarn-workspaces/yarn-workspaces.sh

@@ -0,0 +1,51 @@
+# make sure errors stop the script
+set -e
+
+echo "tarball $1"
+echo "add patch-package to root"
+yarn add $1 --ignore-workspace-root-check
+
+echo "set up postinstall scripts"
+node ./add-postinstall-commands.js package.json packages/a/package.json packages/b/package.json
+
+echo "modify hoisted left-pad"
+npx replace leftPad patch-package node_modules/left-pad/index.js
+
+echo "create patch file"
+npx patch-package left-pad
+
+echo "modify unhoisted left-pad"
+cd packages/a
+npx replace leftPad patch-package node_modules/left-pad/index.js
+
+echo "create patch file"
+npx patch-package left-pad
+
+echo "go back to root"
+cd ../../
+
+echo "delete all node modules"
+rimraf **/node_modules
+
+echo "execute yarn from root"
+yarn
+
+echo "hoisted left-pad was patched"
+grep patch-package node_modules/left-pad/index.js
+
+echo "unhoisted left-pad was patched"
+grep patch-package packages/a/node_modules/left-pad/index.js
+
+echo "delete all node modules"
+rimraf **/node_modules
+
+echo "execute yarn from a"
+cd packages/a
+yarn
+cd ../../
+
+echo "hoisted left-pad was patched"
+grep patch-package node_modules/left-pad/index.js
+
+echo "unhoisted left-pad was patched"
+grep patch-package packages/a/node_modules/left-pad/index.js

integration-tests/yarn-workspaces/yarn-workspaces.test.ts

@@ -0,0 +1,5 @@
+import { runIntegrationTest } from "../runIntegrationTest"
+runIntegrationTest({
+  projectName: "yarn-workspaces",
+  shouldProduceSnapshots: false,
+})