chore: attempt at test for extraneous dependancies

Author: YodaDaCoda

workspaces/arborist/test/arborist/build-ideal-tree.js

@@ -4091,3 +4091,15 @@ t.test('should take devEngines in account', async t => {
   const tree = await buildIdeal(path)
   t.matchSnapshot(String(tree.meta))
 })
+
+t.test(
+  'extraneous dependency not buildable on current platform does not throw',
+  async (t) => {
+    const path = resolve(fixtures, 'extraneous-platform')
+    createRegistry(t, true)
+    const tree = await buildIdeal(path, { prune: false })
+    console.log(tree)
+
+    // t.equal(tree.children.get('platform-specifying-test-package').package.version, '1.0.0', 'added the optional dep to the ideal tree')
+  }
+)

workspaces/arborist/test/fixtures/extraneous-platform/package-lock.json

@@ -0,0 +1,14 @@
+{
+  "name": "extraneous-platform-test",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "shrinkwrapped-package-with-optional-platform-dependancies": "^1.0.0"
+  }
+}

workspaces/arborist/test/fixtures/extraneous-platform/package.json

@@ -0,0 +1,20 @@
+{
+  "name": "dependency-with-optional-platform-dependancies",
+  "dist-tags": {
+    "latest": "1.0.0"
+  },
+  "versions": {
+    "1.0.0": {
+      "name": "dependency-with-optional-platform-dependancies",
+      "version": "0.1.0",
+      "optionalDependencies": {
+        "platform-specifying-test-package": "^1.0.0"
+      },
+      "dist": {
+        "shasum": "977166c896cbeaa1b56e593096244ff184adafb0",
+        "tarball": "https://registry.npmjs.org/shrinkwrapped-package-with-optional-platform-dependancies/-/shrinkwrapped-package-with-optional-platform-dependancies-0.1.0.tgz"
+      }
+    }
+  },
+  "modified": "2025-05-22T00:25:09.206Z"
+}

workspaces/arborist/test/fixtures/registry-mocks/content/dependency-with-optional-platform-dependancies.json

@@ -0,0 +1,16 @@
+{
+  "name": "shrinkwrapped-package-with-optional-platform-dependancies",
+  "dist-tags": {
+    "latest": "1.0.0"
+  },
+  "versions": {
+    "1.0.0": {
+      "name": "shrinkwrapped-package-with-optional-platform-dependancies",
+      "version": "0.1.0",
+      "devDependencies": {
+        "dependency-with-optional-platform-dependancies": "^1.0.0"
+      }
+    }
+  },
+  "modified": "2025-05-22T00:25:09.206Z"
+}